Устройство для автоматического непрямого регулирования скорости водяных турбин

Способ автоматического регулирования режимов работы гидроагрегатов деривационном гидроэлектростанции

Регулятор числа оборотов турбины гидросветильника

Drehzahlregeleinrichtung fuer doppelt geregelte Turbinen

Einrichtung fuer Drehzahlregelung von Turbinen

Control system for wave energy devices

... 1,012,600. Fluid-pressure servomator systems. ATELIERS DE CONSTRUCTIONS MECANIQUES DE VEVEY S.A. May 5, 1964 [May 24, 1963], No. 18606/64. Heading G3P [Also in Division F1] A control system for actuating the control members of a double regulation hydraulic turbine, such as Kaplan or Pelton turbine comprises servomotors 10a, 10b connected to the control members, such as a deflector 12a and blades 12b, the pistons 42, 43 of the servomotor being connected by linkage 63, 33, 64. Each servomotor has a control valve 40, 41 connected by linkage to a lever 30 and to a cam follower 16. The lever 30 is actuated by a speed input 1 to move the controls in the same direction, as indicated by arrows 44, 45. The linkage 33 carries a cam 15 which normally provides the feedback in response to movement of the servomotors from the input signal. If, however one control is too open, the linkage acts to move the servomotors in opposite directions to correct the error. Assume for example that the piston 43 is ...

EINRICHTUNG ZUR REGULIERUNG DER OFFNUNG DES LEITAPPARATES EINER TURBINE

WASSERKRAFT-STAUDRUCKMASCHINE

Water-power ram-pressure machine (1) having at least one rotor (3) which has a hub (4) and blades (5) connected thereto, and which, during operation defines a water level height (d) as the difference between a high-water level (8) and a low-water level (9), having an electrical motor/generator machine (10) which is coupled to the rotor (3), and having a closed-loop control device (11) for closed-loop control of the high-water level (8), which closed-loop control device (11) is connected to the motor/generator machine (10), in order to provide closed-loop control for the rotation speed (n1) of the rotor (3), in order to maintain a predetermined high-water level (8), by closed-loop control of the braking torque of the motor/generator machine (10).

MECHANISM FOR THE ADJUSTMENT OF THE OFFNUNG OF THE CONTROL DEVICE OF A TURBINE

FREQUENCY CONTROLLING MEAN FOR A HYDRO-ELECTRIC POWER PLANT WITH A LOW HEAD.

CONTROL APPARATUS FOR VARIABLE-SPEED HYDRAULIC POWER GENERATING SYSTEM

Disclosed is a control apparatus for a variable-speed hydraulic power generating system comprising a variable-speed a.c. electric generator connected to an a.c. electric power system and a hydraulic machine system including a water turbine for driving the generator and a guide vane for controlling an amount of water supplied to the water turbine. The control apparatus comprises a frequency converter connected between the electric power system and the generator for controlling electric power supplied from the generator to the electric power system, control means operating in response to at least an externally applied power generation command signal for controlling, on one hand, the frequency converter thereby controlling the electric power supplied from the generator to the electric power system and generating, on the other hand, a guide-vane opening command signal for controlling the guide vane thereby controlling the amount of water supplied to the water turbine, and means for reducing ...

APPARATUS FOR GENERATING ELECTRICAL POWER FROM TIDAL WATER MOVEMENT

A tidally driven electricity generator (1) has a series of turbines (2), each of which is mounted under water in an offshore location. Each turbine (2) has blades (3) which are rotated by tidal flow of water, to power a respective generator (4), which outputs AC electrical power via a respective transformer (5) to a cable (6) and appropriate switchgear (7). The cable (6) is connected to a further transformer (8) located onshore, and the transformer (8) is connected to two AC inputs of a drive (9) containing an AC/DC converter, one input (10) of which is connected via a cable to a control feedback device (11). The control feedback device (11) may be a flow meter which determines the velocity of the tidal flow, or may contain look-up tables containing information relating to the velocity of tidal flow at any particular time. The drive (9) outputs DC electrical signals along cabling (13) to DC/AC converter (14), which outputs AC electrical powervia transformer (15) to a fixed frequency local supply grid (16). The drive (9) also controls the speed of rotation of each turbine (2) by adjustment of the frequency of signals output to the turbines from the drive (9) via switchgear (7).

Einrichtung zur Betätigung des Steuerventils von Servomotoren für Kraftmaschinen.

Régulateur de machine rotative.

Regeleinrichtung für Wasserturbinen.

Procédé de stabilisation du fonctionnement d'une installation hydroélectrique et dispositif permettant la mise en oeuvre dudit procédé.

Einrichtung zur Regelung einer Wasserturbine

Isodromregler für Kraftmaschinen, insbesondere Wasserturbinen

Einrichtung zur Begrenzung der Durchgangsdrehzahl bei doppelregulierten Kaplanturbinen

Dispositif de régulation d'une turbine hydraulique.

Kraftmaschinenregler mit Rückdrängungseinrichtung zur Stabilisierung der Regelungsvorgänge.

Verfahren und Einrichtung zur Begrenzung der Durchgangsdrehzahl bei doppeltregulierten Kaplan-Turbinen

Reguliereinrichtung für Kraftmaschinen, insbesondere für Wasserturbinen.

Einrichtung zur Drehzahlregelung von Turbinen

Procédé de réglage d'une machine hydraulique à hélice à pas variable et installation pour la mise en oeuvre de ce procédé

Einrichtung zur Dämpfung von Druckschwingungen in langen Rohrleitungen von Wasserkraftwerken

Verfahren und Vorrichtung zum Schliessen einer Wasserturbine mit regulierbarem Leitapparat im Falle plötzlicher Entlastung

Einrichtung zur Drehzahlregelung von Wasser- oder Dampfturbinen

Installation de réglage de turbine hydraulique à hélice à pas réglable

Drehzahlregeleinrichtung für Turbinen

DREHZAHLREGELEINRICHTUNG FUER WASSERTURBINEN.

Turbogenerator with variable inertia

The turbogenerator consists of a turbine (1) linked by a shaft (2) to a generator (3). The inertia of the unit of the rotating mass of the turbogenerator is composed of a constant part, consisting of the mass of the turbine and of the generator, and of another variable part, represented by the mass (4) of variable inertia. When there is a variation of the speed of the turbogenerator, the inertia of the mass (4) varies automatically so as to maintain the normal speed of the turbogenerator. Thus, dangerous speed adjustment manoeuvres are avoided and the maximum efficiency of the turbine is always obtained whilst reducing the weight and consequently the cost of the installation. ...

Reversible hydroelectric machine

DEVICE FOR REGULATING THE SPEED OF ROTATION OF AN IMPELLER OR PUMP ADJUSTABLE DUAL.

Speed regulator segmented closing control device and method based on proportional throttling valve

Pump revolves and starts reversible hydraulic turbine to water conservancy

The utility model discloses a pump revolves and starts reversible hydraulic turbine to water conservancy, including the ring canal, the telescopic joint, the top cap, the main shaft, the seating ring, water guide mechanism, be equipped with the vice passageway of seating ring main entrance and seating ring in draft tube and the runner seating ring, be equipped with on the top cap and overflow the passageway, overflowing of vice passageway of seating ring and top cap is equipped with a valve and section of thick bamboo valve operating means between the passageway, be equipped with the vice passageway of runner main entrance and runner on the runner, the vice passageway of runner and top cap to overflow the passageway corresponding, vice passageway medial opening of runner and tail water pipe connected, the seating ring outside communicates with each other with the spiral case, the inboard intercommunication water guide mechanism's of seating ring main entrance main entrance, water guide ...

Device of regulation for turbines

DEVICE OF REGULATION NUMBER OF REVOLUTIONS Of a TURBINE OR PUMPS HAS DOUBLE ADJUSTMENT

Regulating apparatus for turbines with variable step

Centrifugal governor for kaplan water turbine - uses masses acted on by centrifugal force to alter blade angle and to provide overspeed braking

Electric governor for hydrodynamic plant - has integrator for astatic regulation which includes limiting circuit for adjustment rate

The governor uses an error signal representing the disparity between the actual and the required rotation rates. This signal is fed to an integrator (2) providing an output determining the rate of adjustment of the opening of a control element regulating the water flow acting on the rotor of the water turbine. A limiting circuitry (5) is inserted between the comparison circuit (1) for the actual and required rotation rates and the integrator (2). It limits the input fed to the latter to a value corresp. to the integrator (2) providing an output allowing adjustment of the control element at the max. possible rate. Pref. the limiting circuit (5) uses a saturation amplifier (18). The governor has a rapid response for wide deviations.

Machine hydro-électrique réversible.

LA MACHINE HYDRO-ELECTRIQUE REVERSIBLE 1 EST CARACTERISEE EN CE QU'ELLE COMPREND DEUX ORGANES SENSIBLES A LA VITESSE DE ROTATION DE LA MACHINE, DONT LE PREMIER 9 PROVOQUE LA FERMETURE DE LA VANNE DE PIED 3 EN CAS DE VITESSE TROP ELEVEE LORS DU FONCTIONNEMENT EN TURBINE ET DONT LE SECOND 10 PROVOQUE LA FERMETURE DU DISTRIBUTEUR 14 DE LA POMPE EN CAS DE BAISSE DE VITESSE LORS DU FONCTIONNEMENT EN POMPE.

APPARATUS AND METHOD FOR CONTROLLING MAXIMUM POWER POINT TRACKING IN WAVE POWER GENERATION SYSTEM

The present invention relates to an apparatus and a method for controlling the maximum power point tracking in a wave power generation system. According to the present invention, by tracking a power take off damping point outputting the maximum power with perturbation and observation in accordance with a damping map of a wave power model, a high power generation amount can be expected by tracking the maximum power point of a wave power generation system. COPYRIGHT KIPO 2017 (AA) Start (BB) End (S300) Monitor thrust and speed of a linear generator (S302) Output power calculation (S304) Control to increase and decrease PT0 (S306) Follow a PT0 damping point at maximum power while observing a power trend ...

수류 또는 해류 터빈

... 수류/해류 터빈은 해치(1612)와, 수차(1608)로 물을 안내하는 보호대(1630)가 달린 블록(1605)를 포함한다. 해치는 다수의 트랜스기어 조립체들(2210,2220,2230,2240)의 제어하에 가뭄에서 홍수 상태에 맞춰 수차로 들어가는 수량을 조절하여, 수차가 일정 범위내에서 정격속도로 회전하도록 한다. 트랜스기어 조립체들은 거친제어와 정밀제어를 한 수차 속도를 모으는 축적기(3010)를 포함한다. 트랜스기어 조립체들은 양방향이나 일방향의 수차 축 회전을 위한 PTO 스위치를 포함한다. 터빈은 상부, 측면, 또는 하부로부터 물을 공급받고, 꼬리날개를 포함하거나, 2개의 터빈들이 서로 반대로 배치되어 만조와 간조 흐름을 모두 이용하도록 한다.

Fluid power generating apparatus and method for controlling the same

Provided is a fluid power generating apparatus that is capable of matching energy a fluid received by a rotor with electric energy output from a power generator. The fluid power generating apparatus is provided with a driving unit 24 for moving at least one of a stator 7 of the power generator 8 and the rotor 9 in the axial direction of the rotation axis 4 thereby to change the overlap length such that the stator 7 and the rotor 9 overlap one another. A fluid speed measuring unit 6 measures the speed of the fluid, and a controller 10 controls the overlap length of the power generator 8 based on the measured speed of the fluid and predetermined relations between speeds of the fluid and indices of the overlap length of the power generator 8 (contact ratio).

CONTROL SYSTEM FOR WAVE ENERGY DEVICES

A control system (55) is provided for a wave energy device (10) including a rotary absorber (40). The control system (55) can adjust the rotation speed (S) of the rotary absorber (40) based on the velocity (V) of fluid flowing through the absorber resulting from waves in order to optimise the efficiency of the absorber (40).

SYSTEM FOR THE REGULATION OF A WATER FLOW PASSING THROUGH A HYDROELECTRIC TURBINE

A system (100) for the regulation of a water flow passing through a hydroelectric turbine (200), said water flow having a main sliding direction d, a speed vu upstream of the system (100), a speed vt at the hydroelectric turbine (200), a speed vd downstream of the hydroelectric turbine (200) and a height hu of the free surface upstream of the system (100). The system (100) comprises a working canal (110) arranged in the water flow and comprising at least one side wall (115), said working canal (110) arranged, in use, to house the hydroelectric turbine (200). The system (100) then comprises at least one movable wall (120a,120b) located upstream of the hydroelectric turbine (200) and configured to switch between a neutral configuration, wherein vt ͠ = vu, and at least one flow acceleration configuration, wherein vt > vu. In particular, the system (100) also comprises at least one sensor configured to measure the speed vu and the height hu, in such a way that the control unit switches said ...

Method of counterflow through a pump and method of controlling the operation of a pump in a pumping installation

A method of detecting a counterflow in a pump comprises providing with detecting means for detecting variations in the discharge pressure of the pump and signal analyzing means for analyzing oscillation components contained in an output signal from the pressure detecting means, and detecting the pump's operating point to have entered a counterflow characteristic operation region when a waveform of the detection signal generated in association with the variations in the discharge pressure of the pump exhibits a predetermined spectrum distribution. Further, when it is detected that the operating point enters a counterflow characteristic operation region, the escape from that region is performed by temporally throttling the guide vane and temporally increasing the rotating speed.

METHOD AND APPARATUS FOR CONTROLLING VARIABLE-SPEED HYDRAULIC POWER GENERATON SYSTEM

Rule device for adjustable organs of water turbines, propelled by single servo actuators

CONTROL SYSTEM FOR STEAM TURBINES

Differentiation element coefficient and time constant identification method of water turbine governor

Filling standpipe speed-reducing and resistance-increasing device

PROCEDE POUR ETABLIR UNE VALIDITE DE SYNTHESE ENTRE DEUX SOURCES DE SIGNAUX, APPLICABLE NOTAMMENT A LA COMMANDE DE MOTEURS A TURBINE

LA PRESENTE INVENTION CONCERNE DES CONTROLES CROISES ET LA SYNTHESE DE SIGNAUX REPRESENTANT DES PARAMETRES, PLUS PARTICULIEREMENT POUR UNE APPLICATION AUX MOTEURS A TURBINE. CE PROCEDE EST CARACTERISE EN CE QUE L'ON PRODUIT UN PREMIER SIGNAL N1 INDIQUANT UN PREMIER PARAMETRE DETECTE, EN REPONSE A CELUI-CI, ON PRODUIT UN SECOND SIGNAL N2 INDIQUANT UN SECOND PARAMETRE LIE AU PREMIER PARAMETRE, EN REPONSE A CE SECOND PARAMETRE, ON SURVEILLE LA VERACITE DU PREMIER SIGNAL ET DU SECOND SIGNAL, ON PRODUIT UN PREMIER SIGNAL SYNTHETISE N1SYNTH SI LA VERACITE DU PREMIER SIGNAL EST INFERIEURE A LA VERACITE DU SECOND SIGNAL ET ON PRODUIT UN SECOND SIGNAL SYNTHETISE N2SYNTH SI LA VERACITE DU PREMIER SIGNAL EST AU MOINS EGALE A LA VERACITE DU SECOND SIGNAL.

Apparatus for the adjustment of the water turbines

Device of regulation for a Kaplan turbine

Process of adjustment of a hydraulic machine with double adjustment, and installation for the implementation of this process

Improvements with the water turbines

Method for recovering the rate by groups at the time of disconnection

DEVICE OF REGULATION OF FREQUENCY FOR HYDROELECTRIC STATION OF LOW FALL

METHOD FOR STABILIZING THE ROTATION SPEED OF A HYDRAULIC MACHINE WITH S-CHARACTERISTICS AND INSTALLATION FOR CONVERTING HYDRAULIC ENERGY INTO ELECTRICAL ENERGY

The method allows stabilizing the rotation speed of a hydraulic machine (20) with S-characteristics. It is implemented by means of a control loop feedback system (1) having a controller (C(s)) for calculating an orientation (Yi) to affect guide vanes (206) of the machine. It includes steps that consist, at each iteration, in calculating a set of internal states (N11, Q11, C11, H, Q) associated to the operating point of the machine, establishing a linearized transfer function in function of the set of internal states, calculating characteristics parameters (Kp, Ti, Td) of the controller in function of the established transfer function so that the control loop feedback system is stable, measuring the rotation speed (N) of the hydraulic machine, comparing the measured rotation speed (N) with a target rotation speed (Nc), and adjusting the orientation affected to the guide vanes accordingly.

Cushioned dual-action constant speed wave power generator

A wave power generator is substantially continuously driven by a pair of floats connected to a common drive shaft and positioned side by side along a line perpendicular to the direction of wave motion, one float being specifically designed to efficiently drive the shaft during the rising portion of a wave, the other to efficiently drive the shaft during the falling portion of a wave. The generator's flywheel is maintained at a constant speed by an automatic load control throughout a range of wave patterns sufficient to encompass over 70% of the statistically expected wave patterns at the generator location. An inclined-bottom float is used for the rising wave drive, and a bottom-weighted float is disclosed for the falling wave drive. The floats may be disposed one above the other and may have mating conical surfaces for cushioning occasional contact between the floats. In accordance with another feature of the invention, the efficiency of the inventive apparatus is increased by holding ...

Generator system and method of operation

A generator system includes an AC generator having one or more phases; a transformer having the same number of phases as the AC generator; for each phase of the AC generator, only a capacitive element receiving the current from a respective output winding of the AC generator for conveying in series to a primary winding of a respective phase of the transformer, each capacitive element having a first terminal electrically connected to the respective output winding and a second terminal electrically connected to the respective primary winding; a prime mover in driving engagement with the AC generator; and a load connected to a secondary winding of the transformer. A method to reduce the mechanical input to an AC generator comprises reducing the counter torque of the AC generator by conveying, in series only, the current from the AC generator to a transformer via, for each phase of the AC generator, a respective series-connected capacitive element having a first terminal electrically connected ...

Startup method of Francis turbine and Francis turbine

A startup method of a Francis turbine according to an embodiment includes: a bypass-valve opening step of opening the bypass valve with the inlet valve closed; an inlet-valve opening step of opening the inlet valve after the bypass-valve opening step; and a first rotation-speed increasing step of increasing a rotation speed of the runner by opening the guide vane at an opening that is 50% or more of a maximum opening before a flow velocity of a swirling flow flowing around the runner reaches 90 m/sec.

HYDROPOWER GENERATION SYSTEM AND POWER GENERATOR CONTROL METHOD

A hydroelectric power generation system (11) is included in a channel control system (1) including a command section (9) configured to output a command value of a flow rate or pressure of a fluid, an opening degree control unit (10) configured to calculate a target opening degree based on the command value output by the command section (9), and a motor-operated valve (7) installed in a channel (2) through which the fluid flows and configured to open and close in accordance with the target opening degree. The hydroelectric power generation system (11) is provided with a water turbine (15) disposed in the channel (2) in series or parallel with the motor-operated valve (7), a generator (16) configured to be driven by the water turbine (15), and a generator controller (17) configured to control a torque or number of rotations of the generator (16) with reference to opening degree information indicating a measured value of an actual opening degree of the motor-operated valve (7).

DRIVING SYSTEM OF WATER WHEEL AND PUMP WATER WHEEL

PURPOSE: To prevent guide vane pulsations by keeping the opening degree of guide vanes lower than that at load rejection prior to the guide vane opening signal given from a speed governer at load rejection for promotion of reliability of the apparatus. COPYRIGHT: (C)1978,JPO&Japio ...

POWER GENERATION SYSTEM AND ITS CONTROLLING METHOD

PROBLEM TO BE SOLVED: To realize high reliability, simplification of circuitry and cost reduction by obtaining speed information from a generator without using a speed sensor for detecting the axial speed of a turbine. SOLUTION: A power controller 5 determines an induced voltage or a rotor flux from the output voltage and current of a generator 3, estimates the rotational speed of the generator 3 from the phase of the induced voltage or the rotor flux and then calculates the output of a windmill 1 from the estimated speed and the output of the generator 3. Since the output of the windmill 1 can be calculated without requiring a speed sensor for detecting the axial speed of the generator 3, simplification of the circuitry, cost reduction and high reliability can be realized. COPYRIGHT: (C)2004,JPO&NCIPI ...

Электрический регулятор скорости гидротурбин

Устройство для автоматического регулирования водяной турбины

Verfahren zum Erhalten der Synchron-drehzahl nach einer ploetzlichen Entlastung einer Wasserturbine in einem Flusskraftwerk

Apparatus for generating electrical power from tidal water movement

ESTABLISHING SYNTHESIS VALIDITY BETWEEN TWO SIGNAL SOURCES

NUMBER OF REVOLUTIONS CONTROLLING MEAN FOR OPEN JET WATER TURBINES

Mechanism for hydraulic turbines, in particular Kaplan turbines, for the controlling Leitund rotor blades

WATER FORCE DYNAMIC PRESSURE MACHINE

Wasserkraft-Staudruckmaschine (1) mit wenigstens einem Laufrad (3), das eine Nabe (4) und damit verbundene Schaufeln (5) aufweist, und das im Betrieb eine Wasserstandshöhe (d) als Differenz zwischen einem Oberwasserpegel (8) und einem Unterwasserpegel (9) festlegt, mit einer mit dem Laufrad (3) gekuppelten elektrischen Motor-Generator-Maschine (10), und mit einer Regeleinrichtung (11) zur Regelung des Oberwasserpegels (8), die mit der Motor-Generator-Maschine (10) verbunden ist, um durch Regelung des bremsenden Drehmoments der Motor-Generator-Maschine (10) die Drehzahl (n1 ) des Laufrads (3) zur Einhaltung eines vorgegebenen Oberwasserpegels (8) zu regeln.

Control method for a hydraulic unit

The invention relates to a control method for a hydraulic unit (1) comprising a variable-speed turbine (300) that drives an electric generator (210), comprising: -having a minimum characteristic rotational speed law of the turbine; -making the hydraulic unit operate with an initial electrical power setpoint value; -retrieving a value for the water height at the inlet (300); -retrieving a new electrical power setpoint value (Pec) greater than the initial value; -transforming the new electrical power setpoint value (Pec) into a characteristic mechanical power (P11); -for said characteristic mechanical power (P11), determining the minimum rotational speed n ...

Control method for a hydraulic unit

The invention relates to a control method for a hydraulic unit (1) comprising a variable-speed turbine (300) that drives an electric generator (210), comprising: -having a minimum characteristic rotational speed law of the turbine; -making the hydraulic unit operate with an initial electrical power setpoint value; -retrieving a value for the water height at the inlet (300); -retrieving a new electrical power setpoint value (Pec) greater than the initial value; -transforming the new electrical power setpoint value (Pec) into a characteristic mechanical power (P11); -for said characteristic mechanical power (P11), determining the minimum rotational speed n

PCC Control device of variable speed water turbine

Electric governor for hydrodynamic plant - has integrator for astatic regulation which includes limiting circuit for adjustment rate

Regulator for turbines

Speed regulator to servo-motor for driving machines, in particular for water turbines

Speed regulator for turbines

OPTICAL APPARATUS FOR VIRTUAL INTERFACE PROJECTION AND SENSING

Optical and mechanical apparatus and methods for improved virtual interface projection and detection, by combining this function with still or video imaging functions. The apparatus comprises optics for imaging multiple imaged fields onto a single electronic imaging sensor. One of these imaged fields can be an infra red data entry sensing functionality, and the other can be any one or more of still picture imaging, video imaging or close-up photography. The apparatus is sufficiently compact to be installable within a cellular telephone or personal digital assistant. Opto-mechanical arrangements are provided for capturing these different fields of view from different directions. Methods and apparatus are provided for efficient projection of image templates using diffractive optical elements. Methods and apparatus are provided for using diffractive optical elements to provide efficient scanning methods, in one or two dimensions. © KIPO & WIPO 2007 ...

부력 조절이 가능한 수력 터빈

... 중력에 의해 터빈(10)이 가이드(20)를 따라 하방으로 이동할 수 있도록 실질적으로 수직하게 배향된 가이드(20) 상에서 이동 가능한 부유식 터빈(10)이 설명된다. 터빈 장치(10)는 용이하게 가라앉도록 음의 부력을 가지지만, 필요한 경우 터빈 장치가 양의 부력을 전달받도록 하는 조정 가능한 부력 수단을 구비하여 제공된다. 양의 부력을 전달받을 경우, 터빈 장치(10)는 부력에 의해 수직하게 배향된 가이드(20) 위로 되돌아 부유한다. 중력에 의해 가이드(20) 아래로 이동하고, 부력에 의해 가이드(20) 위로 되돌아 갈 경우, 유효한 인공 흐름이 터빈 블레이드들을 통하여 이동에 의해 생성되며, 블레이드들을 회전시켜, 일반적으로 적합한 기어 장비에 의해, 차례로 발전기가 전기를 생산하도록 한다.

Small hydro power maintenance system and method of providing it

본 발명의 실시예에 따른 소수력 발전 유지보수 시스템은, 상류수가 지나 가는 주 배관; 상기 주 배관의 압력을 조절하기 위해 구비되는 덤프 배관; 상기 주 배관의 유량을 측정하는 유량계; 상기 주 배관과 덤프 배관 사이에 구비된 밸브; 상기 주 배관을 통해 공급되는 물을 동력으로 변환하는 터빈발전기; 상기 밸브를 제어하는 제어부 및 상기 제어부의 동작을 모니터링할 수 있는 어플리케이션이 포함된 관리자 단말을 포함하는 소수력 발전 유지보수 시스템을 제공할 수 있다. Hydrophobic power generation maintenance system according to an embodiment of the present invention, the main pipe passing upstream water; A dump pipe provided to adjust the pressure of the main pipe; A flow meter for measuring the flow rate of the main pipe; A valve provided between the main pipe and the dump pipe; A turbine generator for converting water supplied through the main pipe into power; A control unit for controlling the valve and the A small hydro power generation maintenance system including an administrator terminal including an application for monitoring the operation of the controller may be provided.

DEVICE OF REGULATION OF THE SPEED OF A TURBINE OR BOMB OF DOUBLE REGULATION

Tidal power generation system and methods

The invention provides a system for the extraction of energy from an underwaterflow stream in a body of water. The system comprises a support frame which comprises a plurality of receptacles for mounting functional modules on the support frame. The plurality of receptacles are arranged to form a horizontally-distributed two-dimensional array on the support frame. The plurality of vertical axis turbine units is configured to be interchangeably mounted in the receptacles.

HYDRAULIC POWER GENERATING SYSTEM AND METHOD FOR ADJUSTING POWER CONSUMPTION IN HYDRAULIC POWER GENERATING SYSTEM

PROBLEM TO BE SOLVED: To provide a hydraulic power generating system and a method for adjusting power consumption in the hydraulic power generating system, adjusting power consumption even though a generator-motor is a synchronous machine in a pumping operation. SOLUTION: This hydraulic power generating system is provided with a pump water wheel 13, the generator-motor 15 connected to the pump water wheel 13 by a power transmission shaft 13, a starter 17 increasing the rotational speed of the rotor of the generator-motor 15, and a parallel circuit breaker 16 connected in parallel to the starter 17 and disconnecting the generator-motor 15 from an electric power system 19. A rotational speed adjusting means 20 adjusting the rotational speed of the rotor of the generator-motor 15 is provided in the starter 17. COPYRIGHT: (C)2006,JPO&NCIPI ...

HYDROPOWER INSTALLATION

A hydropower installation includes a water supply and an energy generating station, with the supply at a higher level than the energy generating station; and a duct extending between the supply and the energy generating station. The energy generating station of the hydropower installation is configured based on high water velocity and low pressure. The duct may comprise plastic pipes. The duct may be arranged on a foam support and enclosed by a foam embedment. The duct may comprise at least two duct sections, with an intermediate energy generating station arranged between the duct sections of the duct. The duct may comprise internally extending protrusions, such as dimples to promote a laminar flow of fluid through the pipe. The duct may taper. Water pressure inside the duct may be maintained at atmospheric level. The proposed features all contribute to a pressure free velocity based system. 1. A hydropower installation , comprisinga water supply and an energy generating station, where the water supply is at a higher vertical level than the energy generating station; anda duct extending between the water supply and the energy generating station,wherein the energy generating station of the hydropower installation is configured based on high water velocity and low pressure.2. The hydropower installation according to claim 1 , wherein the duct comprises plastic pipes.3. The hydropower installation according to claim 2 , wherein the plastic of the plastic pipes comprises at least one material from a group comprising Glass Reinforced Polyester (GRP) claim 2 , and High Density Polyethylene (HDPE).4. The hydropower installation according to claim 1 , wherein the duct is arranged on a support and enclosed by an embedment claim 1 , wherein at least one of the support and the embedment comprises a foam material.5. The hydropower installation according to claim 4 , wherein the foam material is selected from a group comprising: open Polyurethane (PU) foam; closed Polyurethane ( ...

HYDRAULIC MACHINE HAVING A DEVICE FOR MEASURING THE WATER LEVEL IN THE INTAKE PIPE AND METHOD FOR DRAINAGE

A hydraulic machine has a runner, a guide apparatus, a draft tube, and an apparatus for measuring the water level in the region of the draft tube. The apparatus includes a first pressure measuring device, a second pressure measuring device, and a unit for generating differential pressure values. The pressure measuring devices are arranged in such a way that they may detect the pressures applied inside the draft tube and are respectively connected to the unit. The first pressure measuring device is located above the second pressure measuring device, and the unit is configured to generate the difference between the pressures that the pressure measuring devices detect. There is also described a method for dewatering the runner of such a hydraulic machine. 14-. (canceled)5. A hydraulic machine , comprising:a runner, a guide apparatus, and a draft tube;a level detector for measuring a water level in said draft tube, said level detector including a first pressure measuring device, a second pressure measuring device, and a unit for generating differential pressure values;said first and second pressure measuring devices being disposed to detect pressures prevailing inside said draft tube and being connected to said unit;wherein said first pressure measuring device is located above said second pressure measuring device and said unit is configured to generate a difference between the pressures respectively detected by said first and second pressure measuring devices.6. The hydraulic machine according to claim 5 , wherein:said first and second pressure measuring devices are pressure sensors for generating an electrical pressure signal and said first and second pressure sensors are connected to said unit by way of electrical cables; andsaid unit is an electronic unit for calculating an electrical differential pressure signal.7. The hydraulic machine according to claim 5 , wherein said first and second pressure measuring devices respectively comprise a separating membrane and ...

COMMUTATOR-LESS AND BRUSH-LESS DIRECT CURRENT GENERATOR AND APPLICATIONS FOR GENERATING POWER TO AN ELECTRIC POWER SYSTEM

Three controls, three variable gear assemblies, an optional hatch or variable propeller pitch, and a variable overlap generator (VO generator), as well as one or more commutator and brushless free direct current generators may be used independently and together to provide constant frequency and voltage output power and to increase the amount of output power generated with the same input water flow or wind speed in a plurality of embodiments useful in wind power generation and water renewable energy generators for any of tidal and ocean current or wave conditions. Two Transgear™ assemblies side-by-side and sharing the same central shaft may comprise a constant speed motor control, produce required constant frequency and voltage and be reduced in part count and complexity. The variable overlap generator of a marine hydrokinetic or wind power generator may be used as a low torque generator, a high power-rated generator or a control in these applications and may generate more electric power than a conventional fixed power generator (the rotor axially aligned to overlap the stator in a conventional manner) over a wider input range. An electromotive force (EMF) embodiment generates alternating current at constant frequency and voltage in varying wind and water speed conditions. 1. A marine hydrokinetic electric or wind power generator comprisinga gearbox coupled to one of a propeller shaft and a waterwheel shaft, the gearbox comprising magnetic gears for slipping in the event of one of withstanding bursts of wind and water flow energy,a direct current generator which comprises no commutator or brush and generates electromotive force,a mechanical rotary frequency converter comprising three variables, responsive to one of a waterwheel shaft rotation and a propeller rotation shaft, the mechanical rotary frequency converter comprising at least one spur/helical gear assembly having equally spaced sets of planetary gears of a carrier and surrounding at least one sun gear ...

Improvements to Hydraulic Machines During Grid Disconnections

Installation for converting hydraulic energy into electrical energy, provided with a fixed speed hydraulic machine comprising a pump-turbine () linked to a generator () by a shaft. 1. A method for limiting the rotational speed of a fixed speed hydraulic machine comprising a generator following a disconnection of the hydraulic machine from an electricity grid , the method comprising the steps of:{'b': 20', '30, 'a) detecting a disconnection of the generator () from the grid (); and'}{'b': 20', '34', '35, 'b) connecting the generator () to an electrical torque actuator () by switching electrical torque actuator connection means () to a conducting state.'}212-. (canceled) The invention relates to a method of command of a hydraulic machine and more particularly of a reversible hydraulic machine with S-characteristics. Typical hydraulic machines with S-characteristics are a variety of hydro-power plants that have a reversible pump-turbine that exhibits S-shaped characteristics in a turbine operation region. The invention also concerns an installation for converting hydraulic energy into electrical energy, in which this method can be implemented.Reference is first made to which represents an installation for converting hydraulic energy into electrical energy with S-characteristics comprising a hydraulic machine. In the example, this hydraulic machine is a pump-turbine that uses, in a turbine mode, hydraulic energy to set a shaft in rotation. The shaft is coupled to the rotor of a generator having an alternator that converts mechanical energy of the rotating rotor into electrical energy.Here-below, the functioning of the pump-turbine is described in the turbine mode. The pump-turbine includes a volute that is supported by concrete blocks and . For example, a non-represented penstock extends between a non-represented upstream reservoir and the volute . This penstock generates a forced water flow F to power the machine , said water flow is released to a non-represented ...

Method, system and apparatus for operating a hydraulic turbine

A method, system and apparatus for operating a hydraulic turbine. A speed adjustment quantity for the hydraulic turbine and a corresponding change in flow quantity are obtained. A rotation speed of the hydraulic turbine is adjusted based on the speed adjustment quantity. A change ratio of the flow quantity with regard to the speed adjustment quantity is determined based on the speed adjustment quantity and the corresponding change in flow quantity. An adjustment manner in which the rotation speed is further adjusted is determined based on the determined based on the determined change ratio of flow quantity. An adjustment manner in which the rotation speed is further adjusted is determined based on the determined change ratio of flow quantity. It enables the hydraulic turbine to track a maximum efficiency operation point under a given power order and water head in real time at a low cost. 1. A method of operating a hydraulic turbine , comprising:obtaining a speed adjustment quantity for the hydraulic turbine and a corresponding change in flow quantity, wherein a rotation speed of the hydraulic turbine is adjusted based on the speed adjustment quantity;determining a change ratio of the flow quantity with regard to the speed adjustment quantity based on the speed adjustment quantity and the corresponding change in flow quantity;determining an adjustment manner in which the rotation speed is further adjusted based on the change ratio.2. The method of claim 1 , wherein the obtaining a corresponding change in flow quantity comprises obtaining a change of opening angle of a guide vane of the hydraulic turbine claim 1 , andwherein the determining a change ratio of flow quantity with regard to the speed adjustment quantity comprises: determining a change ratio of the opening angle of the guide vane with regard to the speed adjustment quantity.3. The method of claim 1 , wherein the determining an adjustment manner further comprises any one or more of:determining the ...

Tidal Power Generation System and Methods

The invention provides a system for the extraction of energy from an underwaterflow stream in a body of water. The system comprises a support frame which comprises a plurality of receptacles for mounting functional modules on the support frame. The plurality of receptacles are arranged to form a horizontally-distributed two-dimensional array on the support frame. The plurality of vertical axis turbine units is configured to be interchangeably mounted in the receptacles. 1. A system for the extraction of energy from an underwater flow stream in a body of water , the system comprising:a support frame comprising a plurality of receptacles for mounting functional modules on the support frame, the plurality of receptacles arranged to form a horizontally-distributed two-dimensional array on the support frame; anda plurality of vertical axis turbine units configured to be interchangeably mounted in the receptacles.2. The system according to claim 1 , comprising at least one functional module configured to be interchangeably mounted in the receptacles.3. The system according to claim 1 , wherein the plurality of vertical axis turbine units is arranged substantially in a horizontal plane.4. The system according to claim 1 , wherein the plurality of vertical axis turbines is arranged with a subset of the vertical axis turbines vertically offset with respect to others of the plurality of vertical axis turbines.5. The system according to claim 1 , wherein one or more receptacles comprises an energy storage module.6. The system according to claim 1 , wherein one or more receptacles comprises an accumulator cell module.7. The system according to claim 1 , wherein one or more receptacles comprises a hydrogen fuel cell module.8. The system according to claim 1 , wherein one or more receptacles comprises a control module.9. The system according to wherein the support frame and plurality of vertical axis turbines units form an integrated assembly configured to be towed to an ...

Method for Primary Adjustment of a Hydroelectric Power Plant

The invention relates to a method for primary adjustment of a hydroelectric power plant comprising a dual adjustment turbine, at least one first actuator, and at least one second actuator, wherein the first and second actuators are reset depending upon an actual value of a network frequency of an electrical network which receives the generated electrical power for influencing the turbine output in order to achieve a target value of the network frequency. The invention is characterised in that the first actuators are only operated in predefined actuating steps, and then an adjustment to the target value of the network frequency is performed by resetting the second actuators. 111-. (canceled)12. A method for the primary adjustment of a hydroelectric power plant including a dual-control turbine , at least one first actuator , at least one second actuator , wherein the first and second actuators are adjusted for influencing the turbine power depending on an actual value of a network frequency of an electric network receiving the generated electric power in order to reach a target value of the network frequency , and wherein a Kaplan turbine with turbine blades as the first actuators and guide blades of a guide apparatus as second actuators is used as a turbine , the method comprising:displacing the first actuators only in defined predetermined actuating steps, and thereafter adjusting the target value of the network frequency by adjusting the second actuators.13. The method according to claim 12 , wherein the actuating steps of the first actuators are predetermined with at least 0.5% claim 12 , preferably with a value of between 0.5% and 5% claim 12 , of the total actuating path of the first actuators.14. The method according to claim 12 , wherein the actuating steps are predetermined depending on the current operating point of the turbine.15. The method according to claim 13 , wherein the actuating steps are predetermined depending on the current operating point of the ...

THREE-DIMENSIONAL (3D) FLOW FLOATING POWER GENERATOR

A floating electrical power generator having a three-dimensional (3D) flow passageway configured for increasing the water flow on the paddle wheel to increase the power output. 1. A floating power generator , comprising:a floating platform comprising a pair of spaced apart pontoons connected together by a bottom portion or wall, the floating platform configured to define a three-dimensional (3D) flow passageway having a closed bottom extending along a length of the floating platform;a paddle wheel mounted on the floating platform so that paddles rotate downwardly into the flow passageway; andan electrical generator driven by the paddle wheel to generate power, wherein the floating platform and paddle wheel are configured so that a cross-sectional flow area of the 3D flow passageway decreases exponentially along the 3D passageway to a location of the paddles of the paddle wheel operating in the 3D flow passageway to increase a speed of water flow operating on the paddles of the paddle wheel to increase power production.2. A floating power generator , comprising:a floating platform comprising a pair of spaced apart pontoons connected together by a bottom portion or wall defining a three-dimensional (3D) flow passageway extending along a length of the floating platform, the 3D flow passageway having a first flow passageway section tapering inwardly in a width dimension along a flow direction and having a fixed first depth, the first flow passageway transitioning into a second flow passageway having an increasing depth, the second flow passageway transitioning to a third flow passageway having a second depth greater than the first depth and a fixed width dimension in the flow direction;a paddle wheel mounted on the floating platform so that paddles operate in a second portion of the second flow passageway and a first portion of the third flow passageway; andan electrical generator configured to drive the paddle wheel.3. A floating power generator , comprising:a floating ...

Combined pump and turbine

A combined pump and turbine (electromechanical converter), which may be operable as a motorized centrifugal pump for starting a siphon and as an electromechanical turbine particularly for transmission of a liquid, such as water, in a water treatment plant.

METHOD TO ENHANCE OPERATION EFFICIENCY OF WATER TURBINES AND TO REDUCE CAVITATION OF COMPONENTS THEREOF

A method to dispose at least one air guiding tube between a penstock and a water turbine installed on a dam to form negative pressure at an outlet of the air guiding device by the water kinetic energy produced from high speed of water flow to take in external air for pressurizing, so as to produce a plurality of pressured air bubbles mixed into the water. The water with pressured air bubbles would be decompressed when flowing to an exit of the penstock and has their volumes increased, so as to enhance the water kinetic energy for driving the water turbine more efficiently; meanwhile the method can prevent from production of cavities and further avoid damages of the components of the water turbine from cavitation. 1. A method to enhance operation efficiency of water turbines and to reduce cavitation of components thereof , comprising:having a penstock installed on a dam at a hydroelectric power station, said penstock having an entry at an upper end and an exit at a lower end;having a water turbine with a casing and a plurality of runner blades disposed inside said casing, said water turbine connected to said exit of the penstock for driving said runner blades by hydropower produced by the water flowing out from the penstock;wherein an air guiding device is disposed between the penstock and the plurality of runner blades of the water turbine, said air guiding device including at least one air guiding tube penetrating into a pipe section formed by the exit of the penstock and a connecting section between the exit and the water turbine, said air guiding tube having an inlet at an upper end for guiding in external air and an outlet at a lower end penetrating into the pipe section; and an air control valve is disposed in the air guiding tube between the inlet and the outlet; andforming negative pressure at the outlet of the air guiding tube by high speed of the water flowing out from the penstock to take in external air and then forming a plurality of pressured air ...

Run-of-the-river or ocean current turbine

A run-of-the-river or ocean current turbine may comprise a hatch and a slanted block having protector ribs for directing water flow to a waterwheel. The hatch may be controlled by a plurality of Transgear™ gear assemblies for varying the amount of water flow to the waterwheel from extreme drought to flood conditions so that the waterwheel may turn at rated speeds and within a predetermined range. The Transgear gear assemblies may comprise an accumulator for accumulating a rough and a fine tuned waterwheel speed. The Transgear assemblies may comprise embodiments of power take-off switches for, for example, bi-directional or clockwise and counterclockwise waterwheel shaft rotation. The turbine may be aligned for top-feed, side-feed or bottom feed of water and may comprise a tail wing or first and second turbines facing in opposite directions to capture high and low tidal flow.

CONTROL SYSTEM FOR SUBMERSIBLE ELECTRIC MOTOR DRIVE CONTROL

System and method for controlling operation of a hydroelectric production system comprising electrical actuators operably connected at opposite positions of a gate operating ring for rotating the wicket gates to a desired position. The system receives a single control signal designed for a hydraulic system comprising hydraulic actuators operably connected to a single fluid reservoir and configured to work in tandem to produce simultaneous and opposite axial movements. The system comprises a control interface adapted to produce new control signals, each new signal being intended to a different electrical actuator to cause the electrical actuators to have axial movements which are identical in speed and in opposite directions to substantially imitate the exact movement of the hydraulic actuators onto the gate operating ring. The system is configured to introduce a dampening effect to reduce sudden acceleration and deceleration which is purposely used in hydraulic systems to overcome friction and static effects. 2. The system of claim 1 , wherein the control interface is configured to introduce a dampening effect onto the first and second control signals to reduce an effect of sharp intensity changes of the hydraulic control signal onto gears of the electrical actuators.3. The system of claim 1 , wherein the control interface comprises a first control unit dedicated to the first electrical actuator and a second control unit dedicated to the second electrical actuators claim 1 , the first and second electrical units being substantially identical and being adapted receive the same hydraulic control signal to produce the first and second control signals claim 1 , respectively.4. The system of claim 3 , further comprising a first switch operably connected between the first control unit and the second control unit claim 3 , the first switch being adapted to ping components of the first and second control units to override an output of a dysfunctional component of a first ...

DIFFUSER CONTROLLER FOR TIDAL STREAM POWER GENERATION

Disclosed is a diffuser controller for tidal stream power generation, for use in a tidal stream power generator installed under water to generate electricity using a tidal stream. The diffuser controller includes: a turbine configured to be rotated by the tidal stream; a diffuser which is formed with an inlet through which a fluid flows into the diffuser and an outlet through which the fluid flows out from the diffuser, the turbine being fixed inside the diffuser and a rear foil being rotatably installed in the outlet; and a control unit configured to adjust an rotating angle of the rear foil depending on a direction or velocity of the tidal stream. The diffuser is configured to be rotatable. 1. A diffuser controller for tidal stream power generation , for use in a tidal stream power generator installed under water to generate electricity using tidal stream , the diffuser controller comprising:a turbine configured to be rotated by the tidal stream;a diffuser which is formed with an inlet through which a fluid flows into the diffuser and an outlet through which the fluid flows out from the diffuser, the turbine being fixed inside the diffuser and a rear foil being rotatably installed in the outlet; anda control unit configured to adjust a rotating angle of the rear foil depending on a direction or velocity of the tidal stream,wherein the diffuser is configured to be rotatable in yaw.2. The diffuser controller of claim 1 , wherein the diffuser includes:a lower panel formed in a plate shape;an upper panel positioned above the lower panel and formed in a plate shape;one pair of front foils arranged in a symmetric form between the lower panel and the upper panel so as to configure the inlet;one pair of rear foils arranged in a symmetric form between the lower panel and the upper panel so as to configure the outlet; andone pair of middle foils arranged in a symmetric form between the lower panel and the upper panel so as to configure the inlet and interposed between the ...

THREE-DIMENSIONAL (3D) FLOW FLOATING POWER GENERATOR

A floating electrical power generator having a three-dimensional (3D) flow passageway configured for increasing the water flow on the paddle wheel to increase the power output. 121.-. (canceled)22. A floating power generator , comprising:a floating platform having a three-dimensional (3D) flow passageway defined by an open upper side having water flow open to atmosphere at water level; side walls; and a bottom wall extending between the side walls along at least a portion of a length of the floating platform;a paddle wheel mounted on the floating platform, the paddle wheel comprising paddles rotating downwardly into the three-dimensional (3D) flow passageway so that water flow through the three-dimensional (3D) flow passageway applies a force on the paddles to rotate the paddle wheel; andan electrical generator installed on the floating platform and driven by the paddle wheel to generate electrical power,wherein the three-dimensional (3D) flow passageway comprises a first flow passageway section having a first depth relative to the water level transitioning into a second flow passageway having an increasing depth relative to the water level, the second flow passageway transitioning into a third flow passageway having a second depth relative to the water level greater than said first depth.23. A floating power generator , comprising:a floating platform having a three-dimensional (3D) flow passageway defined by an open upper side with water flow open to atmosphere at a fixed water level and extending along at least a portion of a length of the floating platform, the three-dimensional (3D) flow passageway having a first flow passageway section tapering inwardly in a width dimension along a flow direction through the three-dimensional (3D) flow passageway and having a fixed first depth relative to the water level, the first flow passageway transitioning into a second flow passageway having an increasing depth relative to water level along the flow direction through the ...

FLOATING MOON POOL HYDRAULIC PUMP

The invention comprises a hydraulic pump, wherein wave energy is used to pump a fluid. The apparatus utilizes the oscillation of the free surface of a water column within a moon pool on a floating vessel to lift a floating pump unit. After reaching a peak elevation induced by a passing wave, the gravitational forces on the floater pressurizes and moves a fluid using structurally linked pistons within fixed cylinders on the vessel during the downward return motion of the floater. The pressurized fluid can then be used in a variety of applications including the generation of electricity via hydroelectric turbines. 1. An apparatus for extracting energy from waves , comprising:a) a support structure situated at a surface of a body of water;b) a moon pool positioned within the support structure;c) a float positioned within the moon pool, with the float adapted to rise and fall relative to the support structure with the rise and fall of a water column in the moon pool;d) a linkage connecting the float with a piston such that the piston translates linearly in response to the movement of the float; and (i) an output, and', '(ii) an input having a check valve that permits a fluid to enter the piston cylinder during the upward motion of the float relative to the support structure;, 'e) a piston cylinder in which the piston translates, the piston cylinder comprisingwherein, as the water column in a moon pool falls relative to the support structure, the float moves downward, and the fluid within the piston cylinder is pressurized.2. The apparatus of claim 1 , wherein the piston cylinder comprises a second check valve through which the pressurized fluid exits the piston cylinder.3. The apparatus of claim 1 , wherein the pressurized fluid exits the piston cylinder and the floater lowers until it is supported by the buoyant forces of the water.4. The apparatus of further comprising a high pressure supply line fluidly connected with the output of the piston cylinder.5. The ...

TURBINE-TYPE FLOW RATE CONTROLLING DEVICE

A power generating portion formed of a rotor and a stator is provided. The rotor is formed of a ring incorporating a permanent magnet and an impeller. The rotor is regarded as a turbine. An actual flow rate of fluid flowing in a flow path is estimated from a present angular velocity of the turbine and a present torque of the power generating portion, a torque of the power generating portion in which the estimated actual flow rate corresponds to a setting flow rate is calculated and the torque of the power generating portion is controlled based on the calculated torque and a magnetic pole position of the turbine. The magnetic pole position of the turbine is estimated based on a present phase voltage value and a present phase current value of the power generating portion and a present winding temperature of the power generating portion. 1. A turbine-type flow rate controlling device comprising:a turbine converting energy of a fluid flowing in a flow path into rotational movement energy;a power generator converting the rotational movement energy converted by the turbine into electrical energy;a setting flow rate input inputting a setting flow rate values of which vary due to load fluctuation of a supply destination of the fluid;a flow rate controller estimating an actual flow rate of the fluid flowing in the flow path from a present angular velocity of the turbine and a present torque of the power generator and calculating a torque of the power generator in which the estimated actual flow rate corresponds to the setting flow rate;a magnetic pole position estimator estimating a position of a magnetic pole of a magnet incorporated in the turbine as a magnetic pole position of the turbine; anda power generating controller controlling the torque of the power generator based on the torque calculated by the flow rate controller and the magnetic pole position of the turbine estimated by the magnetic pole position estimator.2. The turbine-type flow rate controlling device ...

TURBINE-TYPE FLOW RATE CONTROLLING DEVICE

A power generating portion formed of a rotor and a stator is provided. The rotor is formed of a ring incorporating a permanent magnet and an impeller. The rotor is regarded as a turbine. An actual flow rate is estimated from a present angular velocity of the turbine and a present torque of the power generating portion, a torque of the power generating portion in which the estimated actual flow rate corresponds to a setting flow rate is calculated and the torque of the power generating portion is controlled based on the calculated torque and a magnetic pole position of the turbine. A measured value detected by a position sensor is used as the magnetic pole position of the turbine, however, when it is determined that reliability does not exist in the position sensor, an estimated value is used. 1. A turbine-type flow rate controlling device comprising:a turbine converting energy of a fluid flowing in a flow path into rotational movement energy;a power generator converting the rotational movement energy converted by the turbine into electrical energy;a setting flow rate input inputting a setting flow rate values of which vary due to load fluctuation of a supply destination of the fluid;a flow rate controller estimating an actual flow rate of the fluid flowing in the flow path from a present angular velocity of the turbine and a present torque of the power generator and calculating a torque of the power generator in which the estimated actual flow rate corresponds to the setting flow rate;a position sensor detecting a position of a magnetic pole of a magnet incorporated in the turbine as a magnetic pole position of the turbine;a magnetic pole position estimator estimating the position of the magnetic pole of the magnet incorporated in the turbine as the magnetic pole position of the turbine;a magnetic pole position selector selecting any one of the magnetic pole position of the turbine detected by the position sensor and the magnetic pole position of the turbine ...

FLUID SYSTEM

A control device estimates a flow rate and an effective height difference of a fluid machine based on a characteristic detectable with regard to a rotating electrical machine and correlating with the flow rate and the effective height difference of the fluid machine. A total flow rate in a pipe system is estimated based on these values estimated by the control device and a flow resistance characteristic line, and cooperative control of the fluid machine and the flow rate control valve is performed such that the estimated value of the total flow rate becomes close to a target flow rate of the total flow rate in the pipe system. 1. A fluid system comprising:a fluid machine installed in a pipe system which has a height difference and through which a fluid flows;a rotating electrical machine connected to a rotation shaft of the fluid machine;a flow rate control valve installed in a run of a bypass circuit which is connected in parallel to the fluid machine; anda control device, which estimates a flow rate and an effective height difference in the fluid machine based on a characteristic which is detectable with regard to the rotating electrical machine and which correlates with the flow rate and the effective height difference in the fluid machine, estimates a total flow rate in the pipe system based on a flow resistance characteristic line which indicates a relationship between the effective height difference and the total flow rate in the pipe system, and on the flow rate and the effective height difference estimated, and performs cooperative control of the fluid machine and the flow rate control valve such that an estimated value of a total flow rate becomes close to a target flow rate of the total flow rate in the pipe system.2. The fluid system of claim 1 , wherein the control device obtains the total flow rate and the effective height difference at a plurality of operating points of the rotating electrical machine to build the flow resistance characteristic line.3. ...

WATER CURRENT POWER GENERATION SYSTEMS

A water current power generating system includes a support structure located on a bed of a body of water. A power generating apparatus, such as a water current turbine device, is mounted on the support structure, by way of a mounting portion. The system also includes a measurement unit operable to determine operating information relating to operation of the system, and a controller operable to determine loading on the system from such operating information, and to adjust a controlled parameter of the system such that loading on the system falls below a predetermined threshold value. 1. A method for controlling a water current power generation system consisting of a support structure located on the bed of a body of water , and a power generating apparatus mounted on the support structure and operable to generate electrical power from a water current flowing past the system , the method comprising:determining operating information relating to operation of the power generating apparatus;determining loading on the power generation system from such operating information; andadjusting a controlled parameter of the power generating apparatus such that loading on the power generation system falls below a predetermined threshold value.2. The method according to claim 1 , wherein the operating information includes operating parameter information relating to at least one operating parameter of the system.3. The method according to claim 2 , wherein the at least one operating parameter is chosen from output power claim 2 , generator rotational speed claim 2 , generator torque claim 2 , rotor rotational speed claim 2 , and rotor blade pitch angle.4. The method according to claim 1 , wherein the operating information includes operating condition information relating to at least one operating condition of the system.5. The method according to claim 4 , wherein the at least one operating condition is chosen from system loading claim 4 , inclination of the power generating apparatus ...

ADJUSTABLE ASSEMBLY OF ROTOR AND STATOR AND APPLICATIONS THEREOF WITH A VARIABLE POWER GENERATOR

A variable power generator comprises one of a stator and a rotor which is adjustably movable through an infinite number of positions from being proximate to one another so that their magnetic fields overlap to a position such that the rotor is most distant from the stator and has little overlap of magnetic field strength. The variable power generator in operation may comprise one of a rotor and a stator being out of phase with one another by an angle, for example, the one of the rotor or the stator leading or lagging the other. In this instance, a motor such as a servo motor may be used to rotationally compensate for the out-of-phase angle by radially moving the rotor with respect to the stator or vice versa. The variable power generator may be also be applied in a cam-controlled speed converter and a wind or marine hydrokinetic turbine. The variable power generator may be used as a low torque generator and a high power-rated generator in these applications and may generate more electric power than a conventional fixed power generator (the rotor axially aligned to overlap the stator in a conventional manner). Moreover, the variable power generator may be applied to advantage in electric motors and internal combustion engines for speed control and other purposes. 1. An adjustable assembly of rotor and stator comprisinga variable power generator coupled to an input shaft and to an output shaft, the variable power generator comprising a rotor and a stator axially adjustable along the output shaft so that the rotor may be displaced with respect to the stator or the stator may be displaced with respect to the rotor, the variable power generator with a minimum displacement and complete overlap of rotor and stator and a maximum torque value in one position and with a maximum displacement and relative non-overlap of rotor and stator and a minimum torque value in another position,an input shaft for rotating at a rotational velocity and an output shaft for rotating at a ...

Hydroelectric System in a Plant

A combined pump and turbine (electromechanical converter), which may be operable as a motorized centrifugal pump for starting a siphon and as an electromechanical turbine particularly for transmission of a liquid, such as water, in a water treatment plant.

HYDROELECTRIC POWER GENERATION SYSTEM

An electric power information acquisition unit is provided for acquiring power supply-and-demand information including electric power acceptable to an electric power system or information correlated with the electric power. A fluid information acquisition unit is provided for acquiring fluid information including information correlated with a physical quantity of a fluid flowing out of a channel. A controller is provided for controlling at least one of the physical quantity, the channel or electric power generated or electric power to be generated by a generator by using the fluid information so that the physical quantity becomes equal to a desired value, while controlling electric power to be supplied to the electric power system to the electric power acceptable to the electric power system or less, by using the power supply-and-demand information. 1. A hydroelectric power generation system comprising:a fluid machine arranged in a channel through which a fluid flows;a generator driven by the fluid machine;a controller configured to control at least one of electric power generated or electric power to be generated by the generator and to supply electric power generated by the generator to an electric power system;an electric power information acquisition unit configured to acquire power supply-and-demand information including electric power acceptable to the electric power system or information correlated with the electric power; anda fluid information acquisition unit configured to acquire fluid information including information correlated with a physical quantity of the fluid flowing out of the channel, whereinthe controller controls at least one of the physical quantity, the channel, or the electric power generated or the electric power to be generated by the generator by using the fluid information so that the physical quantity becomes equal to a desired value, while controlling electric power to be supplied to the electric power system to the electric power ...

Patent JPS6048634B2

Complex for experimental modelling of speed distribution in hydraulic turbines

FIELD: hydraulics.SUBSTANCE: invention relates to a complex for experimental modelling of speed distribution in hydraulic turbines. The complex has a hydraulic turbine model consisting of a stationary blade swirler 1, a blade swirler 3 forcibly rotating on a shaft inside a pipe, a conical transparent speed measurement working section 4 modelling the conical part of the suction pipe, an engine 5 transmitting torque to the swirler 3, an electromagnetic flow meter, a supply pump and a vacuum pump, a frequency converter for controlling the engine 5, a frequency converter for controlling the supply pump. The section 4 has flat outer walls, the swirler 3 is connected with the engine 5 by means of a magnetic coupling 2. The flow meter has feedback with the converter controlling the operation of the supply pump. The speed field is recorded by a two-component system of a laser-doppler anemometer.EFFECT: invention is aimed at providing a possibility of modelling a wide range of flow modes occurring in hydraulic turbines under different loads by a combination of a stationary swirler and a rotating swirler.1 cl, 14 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 763 242 C1 (51) МПК F03B 15/02 (2006.01) F03B 15/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F03B 15/02 (2021.05); F03B 15/08 (2021.05) (21)(22) Заявка: 2020143218, 27.12.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 27.12.2020 (45) Опубликовано: 28.12.2021 Бюл. № 1 C 1 2 7 6 3 2 4 2 R U (54) Комплекс экспериментального моделирования распределения скорости в гидротурбинах (57) Реферат: Изобретение относится к комплексу частотный преобразователь для управления экспериментального моделирования подающим насосом. Участок 4 имеет плоские распределения скорости в гидротурбинах. внешние стенки, завихритель 3 соединен с Комплекс имеет модель гидротурбины, двигателем 5 посредством магнитной муфты 2. ...

Hydropower installation.

The present disclosure relates to a hydropower installation, comprising a water supply and an energy generating station, with the supply at a higher level than the energy generating station; and a duct extending between the supply and the energy generating station. The duct may comprise plastic pipes. The duct may be arranged on a foam support and enclosed by a foam embedment. The duct may comprise at least two duct sections, with an intermediate energy generating station arranged between the duct sections of the duct. The duct may comprise internally extending protrusions, such as dimples to promote a laminar flow of fluid through the pipe. The duct may taper. Water pressure inside the duct may be maintained at atmospheric level. The proposed features all contribute to a change from pressure based systems to essentially pressure free velocity based systems.

Control system for controlling the drive of an underwater electric motor

본 발명은, 위켓 게이트를 원하는 포지션으로 회전시키기 위해 수문 조작 링의 반대 포지션에 동작 가능하게 연결되는 전기 작동기를 포함하는 수력 전기 생산 시스템의 동작을 제어하기 위한 시스템 및 방법에 관한 것이다. 이러한 시스템은, 단일 유체 저장소에 동작 가능하게 연결되며 동시에 작동하여 동시 및 반대 축방향 움직임을 발생시키도록 구성되는 유압 작동기를 포함하는 유압 시스템을 위해 설계된 단일 제어 신호를 수신한다. 이 시스템은 새로운 제어 신호를 발생시키도록 되어 있는 제어 인터페이스를 포함하며, 각각의 새로운 신호는 상이한 전기 작동기를 위한 것이어서 전기 작동기로 하여금 동일한 속도와 반대 방향으로 회전하게 하여 수문 조작 링에의 유압 작동기의 정확한 움직임을 실질적으로 모방하는 축방향 움직임을 갖게 한다. 이 시스템은, 유압 시스템에 고의로 사용되어 마찰 및 정적 효과를 극복하고 갑작스런 가속 및 감속을 감소시키기 위해 댐프닝 효과를 도입하도록 구성된다.

CONTROL SYSTEM FOR DRIVE MOTOR ELECTRIC MOTOR

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2017 136 557 A (51) МПК F03B 15/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21) (22) Заявка: 2017136557, 21.03.2016 (71) Заявитель(и): ФРАНКЛИН ЭМПАЙЕ (CA) Приоритет(ы): (30) Конвенционный приоритет: 19.03.2015 US 62/135,327 (43) Дата публикации заявки: 19.04.2019 Бюл. № 11 CA 2016/050319 (21.03.2016) (87) Публикация заявки PCT: WO 2016/145541 (22.09.2016) Адрес для переписки: 125009, Москва, а/я 332, ООО "Инэврика" R U (57) Формула изобретения 1. Система управления работой системы электрических приводных механизмов гидроагрегата в гидравлической управляющей среде, причем управляющие сигналы поступают к гидравлическим приводам, а система электрических приводных механизмов содержит первый и второй электрические приводные механизмы, функционально соединенные с рабочим кольцом затвора в противоположных положениях, причем система управления содержит: - управляющий интерфейс, выполненный с возможностью приема сигнала гидравлической системы управления и обработки сигнала гидравлической системы управления с целью формирования первого управляющего сигнала, предназначенного для управления перемещением первого электрического приводного механизма, и второго управляющего сигнала, предназначенного для управления перемещением второго электрического приводного механизма; причем первый и второй управляющие сигналы приводят к осевому перемещению первого и второго электрического приводного механизма с одинаковой скоростью, но в противоположных направлениях с целью поворота рабочего кольца затвора в требуемое положение, моделируя тем самым перемещение гидравлических приводов. 2. Система по п. 1, отличающаяся тем, что управляющий интерфейс выполнен с возможностью введения эффекта демпфирования первого и второго управляющего сигнала с целью снижения влияния резкого изменения интенсивности сигнала гидравлической системы управления на зубчатые передачи электрических приводных Стр.: 1 A 2 0 1 7 1 3 6 ...

Method for determining the optimal operating mode of a microhydroturbine

FIELD: hydraulic power engineering.SUBSTANCE: invention relates to hydraulic power engineering, namely to propeller-type microhydroturbines. In the method for determining the optimal operating mode of a microhydroturbine consisting of a hydraulic path, an impeller with a fairing nozzle 7, a shaft 2, a static swirler 3, a hydraulic turbine blade turning control unit, and a conical outlet branch pipe 6, velocity profiles are measured in one cross-section. The microhydroturbine is placed on a measuring stand, the velocity field is measured in the branch pipe 6 using a laser doppler anemometer at a distance of 100 mm from the fairing nozzle 7. The flow twist parameter in this cross-section is calculated. If the value of the twist parameter exceeds 0.15, the angle of the blades of the hydroturbine, the speed of the incoming flow, and the speed of rotation of the shaft are adjusted to reduce the twist parameter. The impeller is driven through a shaft 2 connected with a servo drive 1. The twist parameter is determined by the formula.EFFECT: invention is aimed at creating a simple and accurate method for determining the optimal mode of operation of a microhydroturbine at predetermined water resource parameters.1 cl, 6 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 755 960 C1 (51) МПК F03B 15/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F03B 15/08 (2021.05) (21)(22) Заявка: 2020132314, 01.10.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: 23.09.2021 (45) Опубликовано: 23.09.2021 Бюл. № 27 Адрес для переписки: 630090, г. Новосибирск, пр. Академика Лаврентьева, 1, Перепечко Людмила Николаевна C 1 2 7 5 5 9 6 0 R U (54) Способ определения оптимального режима работы микрогидротурбины (57) Реферат: Изобретение относится к гидроэнергетике, а носика обтекателя 7. Рассчитывают параметр именно к микрогидротурбинам пропеллерного крутки потока в этом сечении. При значении типа. В способе определения ...

The Intelligent oil pressure control system for hydroelectric power station governor and diagnostic method of fault diagnosis

本发明提供的一种故障诊断的水电站调速器油压智能控制系统，包括：监控中心、调速器油压智能控制装置、显示器、故障诊断模块、油泵电机组、油泵电机卸载电磁阀组、油罐补气电磁阀、油罐压力开关、油罐油位开关、回油箱油位开关、油罐压力变送器、油罐油位变送器以及回油箱油位变送器；以及一种基于水电站调速器油压智能控制系统的诊断方法，包括内部诊断方法和外部诊断方法；本发明解决了现有技术存在的易出故障、不易维护以及结构复杂导致的实用性低、无法监测故障的发生、需要大量人力进行排查维修以及不能实时显示系统的运行状况和查询历史运行数据的问题。

Submersible motor drive control system

FIELD: hydraulic machines and engines.SUBSTANCE: group of inventions relates to a system and a method of controlling operation of a hydroelectric power generation system. Proposed system comprises electric drive mechanisms coupled with opposite positions of gate drive ring to rotate guide vanes to required position. System receives a single control signal designed for a hydraulic system containing hydraulic drives connected to a single reservoir for working fluid and made with possibility of synchronous operation for simultaneous axial displacements in opposite directions. System comprises a control interface configured to generate new control signals, each of which is addressed to another electric drive mechanism and is intended for axial movement of electric drive mechanisms with the same speed, but in opposite directions, simulating, in fact, accurate movement of hydraulic drives on working ring of gate. System is configured to introduce a damping effect designed to reduce sudden acceleration and deceleration used in hydraulic systems to overcome friction and static effects.EFFECT: group of inventions is aimed at environmental friendliness.20 cl, 12 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 702 936 C2 (51) МПК F03B 15/04 (2006.01) F03B 3/18 (2006.01) H02P 9/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F03B 15/04 (2019.05); F03B 3/18 (2019.05); H02P 9/006 (2019.05) (21)(22) Заявка: 2017136557, 21.03.2016 (24) Дата начала отсчета срока действия патента: Дата регистрации: 14.10.2019 19.03.2015 US 62/135,327 (43) Дата публикации заявки: 19.04.2019 Бюл. № 11 (45) Опубликовано: 14.10.2019 Бюл. № 29 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 19.10.2017 (56) Список документов, цитированных в отчете о поиске: US 2004101401 A1, 27.05.2004. US 2010194216 A1, 05.08.2010. US 5160244 A, 03.11.1992. CN 202611985 U, 19.12.2012. RU 2012135685 A, 27.02.2014. 2 7 0 2 9 3 6 (73) ...

Operating method of hydraulic or pump turbine

A mechanism to increase the efficiency of machines designed to abstract energy from oscillating fluids

Method for stabilization of hydraulic machine rotation speed and installation containing hydraulic machine

FIELD: physics. SUBSTANCE: group of inventions relates to stabilization of speed (N) of rotation of hydraulic machine, having S-shaped relationship between rotation speed and torque, and installation for conversion of hydraulic energy into electrical. Method is implemented by control system with feedback loop having controller (C(s)) for calculation of orientation (Y) attached to guide vanes. Method includes stages, which at each iteration include: calculating a set of internal states associated with the operating point of the machine in accordance with a set of internal states, establishing a linearised transfer function, which is the machine rotation speed depending on the orientation of the guide vanes, calculation of characteristic parameters of regulator depending on characteristic parameters of linearized transfer function, at which control system is stable, measurement of speed (N), comparison of measured speed (N) with specified speed (N C ) and control by means of regulator (C(s)) to reduce difference (ΔN) between (N) and (N C ). EFFECT: group of inventions is aimed at stabilization and synchronization of rotation speed at start-up with frequency of power system for possibility of connection with it. 10 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 715 465 C2 (51) МПК F03B 3/02 (2006.01) F03B 3/10 (2006.01) F03B 15/00 (2006.01) F03B 15/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F03B 3/02 (2019.02); F03B 3/10 (2019.02); F03B 15/005 (2019.02); F03B 15/08 (2019.02) (21)(22) Заявка: 2017117029, 01.12.2015 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): АЛЬСТОМ РИНЬЮЭБЛ ТЕКНОЛОДЖИЗ (FR) 28.02.2020 04.12.2014 EP 14290369.9 (43) Дата публикации заявки: 10.01.2019 Бюл. № 1 (45) Опубликовано: 28.02.2020 Бюл. № 7 (56) Список документов, цитированных в отчете о поиске: US 2004115048 A1, 17.06.2004. US 4743827 A, 10.05.1988. US 2002146314 A1, 10.10. ...

Operation switching method of water wheel or pump water wheel

내용 없음

Variable speed generator motor

Infinitely variable motion control (IVMC) for river turbines

Infinitely variable motion control (IVMC) provides motion control without any requirement for changing gears or use of a clutch. A spur gear transgear, defined as a system having an input, an output and a control, a variable pitch cam having an eccentric inner and outer cam assembly and a driver may be used to form a speed converter. The speed converter is used in various forms to provide an infinitely variable transmission, a differential, embodiments of wind and river turbines and pumps/compressors. In one embodiment, the speed converter drives first and second directional control assemblies to provide a vehicle with zero turn radius. A variable torque converter may be used in various embodiments to control torque from a minimum to a maximum by controlling movement of a rotor along a shaft in relation to a stator.

Infinitely variable motion control (IVMC) for a transmission with a differential

Infinitely variable motion control (IVMC) provides motion control without any requirement for changing gears or use of a clutch. A spur gear transgear, defined as a system having an input, an output and a control, a variable pitch cam having an eccentric inner and outer cam assembly and a driver may be used to form a speed converter. The speed converter is used in various forms to provide an infinitely variable transmission, a differential, embodiments of wind and river turbines and pumps/compressors. In one embodiment, the speed converter drives first and second directional control assemblies to provide a vehicle with zero turn radius. A variable torque converter may be used in various embodiments to control torque from a minimum to a maximum by controlling movement of a rotor along a shaft in relation to a stator.

Infinitely variable pumps and compressors

Infinitely variable motion control (IVMC) provides motion control without any requirement for changing gears or use of a clutch. A spur gear transgear, defined as a system having an input, an output and a control, a variable pitch cam having an eccentric inner and outer cam assembly and a driver may be used to form a speed converter. The speed converter is used in various forms to provide an infinitely variable transmission, a differential, embodiments of wind and river turbines and pumps/compressors. In one embodiment, the speed converter drives first and second directional control assemblies to provide a vehicle with zero turn radius. Various embodiments of an infinitely variable pump or compressor are described.

Run-of-the-river or ocean current turbine

A run-of-the-river or ocean current turbine may comprise a hatch and a slanted block having protector ribs for directing water flow to a waterwheel. The hatch may be controlled by a plurality of Transgear™ gear assemblies for varying the amount of water flow to the waterwheel from extreme drought to flood conditions so that the waterwheel may turn at rated speeds and within a predetermined range. The Transgear gear assemblies may comprise an accumulator for accumulating a rough and a fine tuned waterwheel speed. The Transgear assemblies may comprise embodiments of power take-off switches for, for example, bi-directional or clockwise and counterclockwise waterwheel shaft rotation. The turbine may be aligned for top-feed, side-feed or bottom feed of water and may comprise a tail wing or first and second turbines facing in opposite directions to capture high and low tidal flow.

Marine hydrokinetic turbine

A marine hydrokinetic electric power generator comprises one of a stator and a rotor which is adjustably movable through an infinite number of positions from being proximate to one another so that their magnetic fields overlap mostly to a position such that the rotor is most distant from the stator and has little overlap of magnetic field strength. Hatch and speed control may be also provided by a spur/helical gear assembly of sun and planetary gear sets referred to herein as a Transgear™ gear assembly. The variable (or fixed) power generator in operation may comprise one of a rotor and a stator being out of phase with one another by an angle, for example, the one of the rotor or the stator leading or lagging the other and the phase angle, frequency or voltage of output power to a power grid corrected responsive to inputs from the power grid and the marine hydrokinetic turbine.

Renewable energy marine hydrokinetic or wind turbine

Three controls, three variable gear assemblies, a hatch, and a variable torque and power generator (VT&PG), may be used independently and together to provide constant frequency and voltage output power and to increase the amount of output power generated with the same input water flow or wind speed. A three variable spur/helical gear assembly of sun and planetary gear sets is a mechanical three variable control and referred to herein as a Transgear™ gear assembly, simply Transgear. A hatch wraps around a waterwheel and may control the amount of water inlet to the system by opening and closing and may be controlled by Transgears and a VT&PG. Two Transgears may comprise a constant speed motor control and produce required frequency and voltage and be reduced in part count and complexity. The VT&PG of a marine hydrokinetic or wind power generator may be used as a low torque generator and a high power-rated generator in these applications and may generate more electric power than a conventional fixed power generator (the rotor axially aligned to overlap the stator in a conventional manner) over a wider input range.

Commutator-less and brush-less direct current generator and applications for generating power to an electric power system

Three controls, three variable gear assemblies, an optional hatch or variable propeller pitch, and a variable overlap generator (VO generator), as well as one or more commutator and brush-less free direct current generators may be used independently and together to provide constant frequency and voltage output power and to increase the amount of output power generated with the same input water flow or wind speed in a plurality of embodiments useful in wind power generation and water renewable energy generators for any of tidal and ocean current or wave conditions. Two Transgear™ assemblies side-by-side and sharing the same central shaft may comprise a constant speed motor control, produce required constant frequency and voltage and be reduced in part count and complexity. The variable overlap generator of a marine hydrokinetic or wind power generator may be used as a low torque generator, a high power-rated generator or a control in these applications and may generate more electric power than a conventional fixed power generator (the rotor axially aligned to overlap the stator in a conventional manner) over a wider input range. An electromotive force (EMF) embodiment generates alternating current at constant frequency and voltage in varying wind and water speed conditions.

Run-of-the-river or ocean current turbine

A run-of-the-river or ocean current turbine may comprise a hatch 1612 and a slanted block 1605 having protector ribs 1630 for directing water flow to a waterwheel 1608, The hatch may be controlled by a plurality of Transgear™ gear assemblies 2210, 2220, 2230, 2240 for varying the amount of water flow to the waterwheel from extreme drought to flood conditions so that the waterwheel may turn at rated speeds and within a predetermined range. The Transgear gear assemblies may comprise an accumulator 3010 for accumulating a rough and a fine tuned waterwheel speed. The Transgear assemblies may comprise embodiments of power take-off switches for, for example, bi-directional or clockwise and counterclockwise waterwheel shaft rotation, The turbine may be aligned for top-feed, side-feed or bottom feed of water and may comprise a tail wing or first and second turbines facing in opposite directions to capture high and low tidal flow.

Voltage converter-controlled damless hydrokinetic river turbines

A river, tidal, wave or ocean current or a wind turbine for generating electricity harnesses a predetermined minimum or baseload value of hydrokinetic/wind energy from variable water/wind flow. A harnessing module may have a waterwheel or propeller and a-generator or a waterwheel or propeller alone. A harnessing module harnesses wind or water energy and may be connected to a land module of electrical and mechanical apparatus by an electrical cable. Received variable electrical input from the harnessing module is converted to a-constant electrical frequency by a connected generator feeding a grid, for example, using a Hummingbird speed converter. The received variable electrical load power may be mechanically corrected by feedback to a Kingfisher converter. An output generator to output constant frequency may use a voltage regulator, a variable voltage transformer and a control motor to provide feed forward control.

PID parameter switching method and device for speed regulator of hydraulic turbine set

本发明公开了一种水轮机组调速器PID参数切换方法及装置，包括：采用预设的PID参数整定算法对所有水轮机组调速器的PID参数进行优化整定，得到第一PID参数和第二PID参数；按照水轮机组调速器出现振荡发生时对应的有功功率振幅对所述水轮机组调速器进行分组，并确定各组水轮机组调速器的PID参数运行模式；根据各组水轮机组调速器的PID参数运行模式，分别构建水轮机组调速器的PID参数模糊切换模型；将实时获取的实时频率偏差值输入到PID参数模糊切换模型，并根据PID参数模糊切换模型的输出结果切换水轮机组调速器的PID参数运行模式，实现水轮机组调速器能够同时兼顾一次性调频性能和阻尼水平，从而能实现从电厂侧抑制系统发生超低频振荡。

Method for controlling flow of water from basin of water vortex power plant, involves enabling pressure controlled flow control with respect to discharge opening with resilient hose via the data processing system

The method involves detecting flow rate of the water and level of water by flow rate measuring sensor (6a) and water level measuring sensor (6b), and transmitting the detected data to data processing system (7). The pressure controlled flow control is enabled with respect to discharge opening with a resilient hose via the data processing system. The size of the cross-section of the discharge opening is adjusted according to flow rate of the water and level of water. An independent claim is included for control structure for controlling flow of water from basin of water vortex power plant.

Hydraulic turbine speed control device

A control system for actuating the control members of a double regulation hydraulic turbine, such as Kaplan or Pelton turbine comprises servomotors 10a, 10b connected to the control members, such as a deflector 12a and blades 12b, the pistons 42, 43 of the servomotor being connected by linkage 63, 33, 64. Each servomotor has a control valve 40, 41 connected by linkage to a lever 30 and to a cam follower 16. The lever 30 is actuated by a speed input 1 to move the controls in the same direction, as indicated by arrows 44, 45. The linkage 33 carries a cam 15 which normally provides the feedback in response to movement of the servomotors from the input signal. If, however one control is too open, the linkage acts to move the servomotors in opposite directions to correct the error. Assume for example that the piston 43 is too far to the right, the link 33 will rotate anticlockwise about pivot 14a causing anticlockwise movement of the cam 15 which allows follower 16 to move downwards. The linkage thus lowers valve 40 to move 42 to the right and lifts valve 41 to move piston 43 to the left until the valves are recentred.

CONTROL PROCESS FOR A HYDRAULIC POWER PLANT

L'invention concerne un procédé de commande d'une centrale hydraulique (1) comportant une turbine à vitesse variable (300) entraînant une génératrice électrique (210), comprenant : -disposer d'une loi de vitesse de rotation caractéristique minimale de la turbine ; -faire fonctionner la centrale hydraulique avec une valeur initiale de consigne de puissance électrique ; -récupérer une valeur de hauteur d'eau en entrée (300) ; -récupérer une nouvelle valeur de consigne de puissance électrique (Pec) supérieure à la valeur initiale; -transformer la nouvelle valeur de consigne de puissance électrique (Pec) en puissance mécanique caractéristique (P11) ; -pour ladite puissance mécanique caractéristique (P11), déterminer la vitesse de rotation minimale ncrit de la turbine (300) ; -commander la centrale hydraulique (1) pour délivrer une puissance électrique égale à la nouvelle valeur de consigne (Pec) et pour maintenir la vitesse de rotation de la turbine (300) au-dessus de la vitesse de rotation minimale déterminée ncrit. The invention relates to a method of controlling a hydraulic power plant (1) comprising a variable speed turbine (300) driving an electric generator (210), comprising: having a law of minimum characteristic rotation speed of the turbine ; - operate the hydraulic unit with an initial electric power setpoint value; -recover a value for the height of water at the inlet (300); -recover a new electrical power setpoint value (Pec) greater than the initial value; -transform the new electrical power reference value (Pec) into characteristic mechanical power (P11); -for said characteristic mechanical power (P11), determining the minimum rotational speed ncrit of the turbine (300); -control the hydraulic unit (1) to deliver an electric power equal to the new setpoint value (Pec) and to maintain the speed of rotation of the turbine (300) above the determined minimum speed of rotation ncrit.

Electromechanical speed controller for turbines

REVERSIBLE HYDROELECTRIC MACHINE

LA MACHINE HYDRO-ELECTRIQUE REVERSIBLE 1 EST CARACTERISEE EN CE QU'ELLE COMPREND DEUX ORGANES SENSIBLES A LA VITESSE DE ROTATION DE LA MACHINE, DONT LE PREMIER 9 PROVOQUE LA FERMETURE DE LA VANNE DE PIED 3 EN CAS DE VITESSE TROP ELEVEE LORS DU FONCTIONNEMENT EN TURBINE ET DONT LE SECOND 10 PROVOQUE LA FERMETURE DU DISTRIBUTEUR 14 DE LA POMPE EN CAS DE BAISSE DE VITESSE LORS DU FONCTIONNEMENT EN POMPE.

Automatic hydro-pump

METHOD FOR CONTROLLING A HYDRAULIC POWER PLANT

L'invention concerne un procédé de commande d'une centrale hydraulique (1) comportant une turbine à vitesse variable (300) entraînant une génératrice électrique (210), comprenant : -disposer d'une loi de vitesse de rotation caractéristique minimale de la turbine ; -faire fonctionner la centrale hydraulique avec une valeur initiale de consigne de puissance électrique ; -récupérer une valeur de hauteur d'eau en entrée (300) ; -récupérer une nouvelle valeur de consigne de puissance électrique (Pec) supérieure à la valeur initiale; -transformer la nouvelle valeur de consigne de puissance électrique (Pec) en puissance mécanique caractéristique (P11) ; -pour ladite puissance mécanique caractéristique (P11), déterminer la vitesse de rotation minimale ncrit de la turbine (300) ; -commander la centrale hydraulique (1) pour délivrer une puissance électrique égale à la nouvelle valeur de consigne (Pec) et pour maintenir la vitesse de rotation de la turbine (300) au-dessus de la vitesse de rotation minimale déterminée ncrit. The invention relates to a method of controlling a hydraulic power plant (1) comprising a variable speed turbine (300) driving an electric generator (210), comprising: -disposing a minimum characteristic rotational speed law of the turbine ; operating the hydraulic unit with an initial electric power set point value; retrieving an input water level value (300); retrieving a new electric power setpoint value (Pec) greater than the initial value; transforming the new electrical power setpoint value (Pec) into characteristic mechanical power (P11); for said characteristic mechanical power (P11), determining the minimum speed of rotation of the turbine (300); commanding the hydraulic power unit (1) to deliver an electric power equal to the new setpoint value (Pec) and to maintain the speed of rotation of the turbine (300) above the minimum determined rotational speed ncrit.

Method of automatic adjustment of kaplan turbines in order to obtain the maximum efficiency and device for the practice of this method

Control system for hydraulic turbines

Small hydro power maintenance system and method of providing it

본 발명의 실시예에 따른 소수력 발전 유지보수 시스템은, 상류수가 지나 가는 주 배관; 상기 주 배관의 압력을 조절하기 위해 구비되는 덤프 배관; 상기 주 배관의 유량을 측정하는 유량계; 상기 주 배관과 덤프 배관 사이에 구비된 밸브; 상기 주 배관을 통해 공급되는 물을 동력으로 변환하는 터빈발전기; 상기 밸브를 제어하는 제어부 및 상기 제어부의 동작을 모니터링할 수 있는 어플리케이션이 포함된 관리자 단말을 포함하는 소수력 발전 유지보수 시스템을 제공할 수 있다.

Electro hydraulic servo control of turbine nozzle box - has solenoid operated clamp on control rod for momentary limitation of opening

Mechanism controls the opening of a turbine high pressure nozzle box via a load-sensitive electrical controller controlling an auxiliary valve which allows hydraulic fluid to flow from a constant pressure source to a distributor valve which feeds the servo actuating the cam control for the nozzle box whilst a mechanical relay with operating arm and valve limits the nozzle box opening by modulating the outflow of fluid from the distribution valve. Means for momentary direct limitation of the opening, consist of a clamp arranged in the centre of the valve into which clamp a rod of the arm extends. The clamp can be actuated to grip the rod by means of a slenoid valve, to obtain direct actuation by the valve of the mechanical relay.

Apparatus and method of controlling motion of floating body in wave energy converter

가동 물체의 모션 제어 장치 및 방법이 제공된다. 가동 물체의 모션 제어 장치는, 선수 동체와 선미 동체간의 상대 운동에 따라 펌핑되는 유압 실린더를 포함하는 가동 물체의 모션 제어 장치에 있어서, 선수 동체와 선미 동체간의 상대 각도를 연산하는 상대 각도 연산 모듈과, 연산된 상대 각도를 미분하여 각속도를 구하는 미분 모듈과, 연산된 상대 각도로부터 상대 운동을 야기시키는 파랑의 주기를 추정하는 주기 추정 모듈과, 상대 각도, 각속도 및 파랑의 주기에 기초하여 유압 실린더의 동작을 제어하는 제어 모듈을 포함하며, 상대 각도 연산 모듈은, 선수 동체의 제1 기울기를 구하는 제1 기울기 센서와, 선미 동체의 제2 기울기를 구하는 제2 기울기 센서와 제1 기울기와 제2 기울기의 편차인 상대 각도를 구하는 편차 연산부를 포함함으로써, 순간적인 파랑의 주기 특성을 추종할 수 있으며, 에너지 변환 효율을 높일 수 있다. An apparatus and method for controlling motion of a moving object is provided. A motion control apparatus for a movable object includes: a motion control apparatus for a movable object including a hydraulic cylinder pumped according to a relative motion between a bow body and a stern body, the motion control device for calculating a relative angle between the bow body and the stern body; A derivative module for differentiating the calculated relative angle to obtain the angular velocity, a period estimation module for estimating the period of the wave causing the relative motion from the calculated relative angle, and a hydraulic cylinder based on the relative angle, the angular velocity and the period of the wave. And a control module for controlling the movement, wherein the relative angle calculation module comprises: a first tilt sensor for obtaining a first tilt of the bow body, a second tilt sensor for obtaining a second tilt of the stern body, and a first tilt and a second tilt By including a deviation calculator that calculates a relative angle which is a deviation of, it is possible to follow the periodic characteristic of the momentary wave, It is possible to increase the conversion efficiency.

Hydroelectric power plant starting system - using generator as motor to drive plant up to synchronous speed before water admission (BR 5.4.77)

Electric current is supplied to the generator so that it operates as an electric motor and drives the plant until synchronous speed is reached. At the same time a control valve is opened so that water is admitted to the turbine. This reduces the time required to achieve full speed, and limits the heating of the generator. By reducing the water flow required the back pressure downstream of the control valve and cavitation at the valve outlet are reduced.

Apparatus for generating electrical power from tidal water movement

A tidally driven electricity generator (1) has a series of turbines (2), each of which is mounted under water in an offshore location. Each turbine (2) has blades (3) which are rotated by tidal flow of water, to power a respective generator (4), which outputs AC electrical power via a respective transformer (5) to a cable (6) and appropriate switchgear (7). The cable (6) is connected to a further transformer (8) located onshore, and the transformer (8) is connected to two AC inputs of a drive (9) containing an AC/DC converter, one input (10) of which is connected via a cable to a control feedback device (11). The control feedback device (11) may be a flow meter which determines the velocity of the tidal flow, or may contain look-up tables containing information relating to the velocity of tidal flow at any particular time. The drive (9) outputs DC electrical signals along cabling (13) to DC/AC converter (14), which outputs AC electrical powervia transformer (15) to a fixed frequency local supply grid (16). The drive (9) also controls the speed of rotation of each turbine (2) by adjustment of the frequency of signals output to the turbines from the drive (9) via switchgear (7).

HYDROLIENNE WITH ELECTROMAGNETIC RETARDER TO SLOW SPEED OF ROTATION OF BLADES.

La présente invention concerne une hydrolienne comprenant une génératrice couplée à un rotor supportant des pales animées en rotation par un courant marin et apte à générer un courant électrique. Cette hydrolienne comprend également des moyens de mesure de la vitesse de rotation du rotor ; au moins un ralentisseur électromagnétique fixé sur le rotor et conçu pour réduire la vitesse du rotor ; une unité de contrôle de la vitesse de rotation du rotor recevant des signaux provenant des moyens de mesure de la vitesse du rotor et émettant des signaux de commande vers le ralentisseur électromagnétique pour ralentir la rotation du rotor lorsque la vitesse mesurée dépasse une valeur déterminée. De cette manière, la vitesse du rotor est régulée pour atteindre une valeur quasi constante et ainsi fournir une énergie nominale déterminée. L'utilisation d'un ralentisseur électromagnétique évite la mise en œuvre de contacts mécaniques pour réguler la vitesse et une usure prématurée de ces contacts.

Intelligent queuing alternate working method for multiple working pumps and multiple standby pumps

一种水轮机调速器液压系统运行状态控制方法，是一种水轮机调速器液压控制系统运行态工况下的油泵启停及加卸载控制的电气控制方法，旨在解决如何根据采集的系统压力，控制水轮机调速器液压控制系统油泵的启停及加卸载，维持水轮机调速器液压控制系统压力长期稳定在额定压力附近的问题；保证调速器液压控制系统油泵长期安全稳定运行，调速器液压控制系统能提供长效稳定且压力等各方面指标达标的压力油源去操作导叶开度执行机构。

Early warning system for hydropower station unit

本发明公开了一种用于水电站机组的预警系统，监控主机获取机组调速器油压装置的实时油压，用于监控机组调速器油压装置油泵运行及故障的监控模块I、用于监控运行机组数量的监控模块II和用于监控运行供水泵数量及故障的监控模块III均与监控主机信号连接。本发明还提供一种用于水电站机组的预警方法，应用于上述的用于水电站机组的预警系统。本发明为因机组调速器油压装置低油压引起的事故停机提供预警，第一时间通知运行人员，为现场处理争取更多的时间，减少机组非计划停运的发生次数；本发明为因机组各部瓦温过高引起的事故停机提供预警，第一时间通知运行人员，为现场处理争取更多的时间，减少机组非计划停运的发生次数。

Fluid system

Un sistema de fluido, que comprende: una máquina de fluido (W) instalada en un sistema de tuberías (1) que tiene una diferencia de altura y a través de la cual fluye un fluido; una máquina eléctrica giratoria (G) conectada a un árbol de rotación (9) de la máquina de fluido (W); una válvula de control de caudal (6) instalada en un circuito de derivación (5) que está conectada en paralelo a la máquina de fluido (W); y un dispositivo de control (20), que está configurado para estimar un caudal (Q) y una diferencia de altura efectiva (H) en la máquina de fluido (W) basada en un un valor de par, una velocidad de rotación y una potencia generada de la máquina eléctrica giratoria; estimar un caudal total (QT) en el sistema de tuberías (1) basado en una línea característica de resistencia al flujo (S) que indica una relación entre la diferencia de altura efectiva (H), el caudal total (QT) y las diferencias de altura total (Ho) en el sistema de tuberías (1), y en el caudal (Q) y la diferencia de altura efectiva (H) estimada, realizar un control cooperativo de la máquina de fluido (W) y la válvula de control de caudal (6) de modo que el valor estimado de un caudal total (QT) se acerque a un caudal objetivo (QT*) del caudal total (QT) en el sistema de tuberías (1).

Hydropower installation

A hydropower installation includes a water supply and an energy generating station, with the supply at a higher level than the energy generating station; and a duct extending between the supply and the energy generating station. The energy generating station of the hydropower installation is configured based on high water velocity and low pressure. The duct may comprise plastic pipes. The duct may be arranged on a foam support and enclosed by a foam embedment. The duct may comprise at least two duct sections, with an intermediate energy generating station arranged between the duct sections of the duct. The duct may comprise internally extending protrusions, such as dimples to promote a laminar flow of fluid through the pipe. The duct may taper. Water pressure inside the duct may be maintained at atmospheric level. The proposed features all contribute to a pressure free velocity based system.

Pump turbine

(57)【要約】 【課題】水車起動時の回転速度の安定性を改善し、同期 可能な落差範囲を拡大する。 【解決手段】ランナーの回転方向を切換えることによっ て揚水，発電の両モードで運転可能なものであって、ラ ンナーを通過する水量を案内羽根開度器で調整し、ラン ナーの回転速度を検出し、発電起動時に、目標回転数を 定格回転数と異なる回転速度に設定し、目標回転速度に 到達した後は目標化点数に達する前よりも、水量調整手 段の応答性を低くして制御する。

A checking apparatus of velocity detector for electronic velocity adjustor

PURPOSE: A velocity detection circuit inspecting apparatus is provided to enable inspection without operation of a generation equipment by fixing a velocity detector to a frame and mounting a motor to the frame. CONSTITUTION: A rotary disk(4) is coupled with an axis(2) of a motor(1), and has tips(3) radially installed in the outer periphery. A sensor(5) detects the rotational velocity of the motor(1) by judging the approach of the tips(3). A coupler(6) provides a rotational force by the axis(2) to a mechanical excessive velocity detector(10). A controller(20) detects the velocity using detection data of the sensor(5), and adjusts the velocity of the motor(1). The mechanical excessive velocity detector(10) is separated from a generator and fixedly installed in a separate frame(11). The axis(2) of the motor(1) is extended through the rotary disk(4) to define an extension(2-1). The extension(2-1) has the leading end integrally coupled with a gear(2-2) for coupling the extension(2-1) end to the coupler(6).

Apparatus for generating electrical power from tidal water movement

A tidally driven electricity generator ( 1 ) has a series of turbines ( 2 ), each of which is mounted under water in an offshore location. Each turbine ( 2 ) has blades ( 3 ) which are rotated by tidal flow of water, to power a respective generator ( 4 ), which outputs AC electrical power via a respective transformer ( 5 ) to a cable ( 6 ) and appropriate switchgear ( 7 ). The cable ( 6 ) is connected to a further transformer ( 8 ) located onshore, and the transformer ( 8 ) is connected to two AC inputs of a drive ( 9 ) containing an AC/DC converter, one input ( 10 ) of which is connected via a cable to a control feedback device ( 11 ). The control feedback device ( 11 ) may be a flow meter which determines the velocity of the tidal flow, or may contain look-up tables containing information relating to the velocity of tidal flow at any particular time. The drive ( 9 ) outputs DC electrical signals along cabling ( 13 ) to DC/AC converter ( 14 ), which outputs AC electrical powervia transformer ( 15 ) to a fixed frequency local supply grid ( 16 ). The drive ( 9 ) also controls the speed of rotation of each turbine ( 2 ) by adjustment of the frequency of signals output to the turbines from the drive ( 9 ) via switchgear ( 7 ).

Hydroelectric power generation system

Turbine apparatus and governor for turbine

In a turbine apparatus comprising a runner rotatable to be rotationally driven by a water, a gain of a derivative calculation element generating a derivative component of a control signal for controlling a flow rate of the water which derivative component is to be applied to the derivative calculation element and the integration calculation element by performing differentiation on a difference between an actual rotational speed and a desired rotational speed of the runner with respect to a time proceeding has a value sufficiently increased to converge a value of the control signal toward a desired value in accordance with the time proceeding in S-characteristic portion.

Apparatus for generating electrical power from tidal movements.

Patent FR2286960B1

Patent JPS5624102B2

Pump hydroturbine

一种通过转换转子的旋转方向、能够在泵送模式或者发电模式下工作的泵水轮机,在导叶开口量的基础上调节通过转子的排量;传感转子的速度;将一目标速度暂时设定为一个与发电启动状态的额定速度不同的第一速度;一通过排量调节装置控制速度的速度响应性被控制为一个在速度到达目标速度之后比速度到达目标值之前低的值;最后,当将水轮机启动并增大水头范围,在这一过程中实现同步时,提高了速度的稳定性。

IMPROVEMENT AT STARTING OF PUMPS OR TURBINE PUMPS

PROCEDE DE DEMARRAGE DES POMPES, EN PARTICULIER PROCEDE DE DEMARRAGE DES TURBINES-POMPES EN POMPES, LESDITES POMPES OU TURBINES-POMPES ETANT DU TYPE POSSEDANT UN DISTRIBUTEUR-DIFFUSEUR FIXE, ET SELON LEQUEL LA COURBE DE VARIATION DE LA PUISSANCE A VITESSE DE REGIME EN FONCTION DU DEBIT DE FLUIDE PASSE PAR UN MINIMUM SITUE ENTRE LE POINT DE DEBIT NUL ET LE POINT DE DEBIT NOMINAL. CONFORMEMENT A L'INVENTION, LE PROCEDE EST CARACTERISE PAR LA SEQUENCE CONSISTANT A METTRE EN ROTATION, A VITESSE INFERIEURE A LA VITESSE NOMINALE, LE MOTEUR DE LA POMPE, LE OU LES ROBINETS DE GARDE ETANT FERMES; LORSQUE LES PRESSIONS DE PART ET D'AUTRE DUDIT OU DESDITS ROBINETS DE GARDE ONT ATTEINT UNE VALEUR DIFFERENTIELLE SOIT NULLE SOIT SUFFISAMMENT FAIBLE POUR QUE SONLEUR OUVERTURE PUISSE ETRE EFFECTUEE SANS RISQUE D'ENDOMMAGEMENT, A OUVRIR CEUX-CI OU CELUI-CI D'UNE QUANTITE TELLE QU'IL(S) LAISSE(NT) PASSER, LORSQUE LE GROUPE ARRIVE AU VOISINAGE DE SA VITESSE NOMINALE, A OUVRIR ENFIN PROGRESSIVEMENT LE OU LESDITS ROBINETS DE GARDE JUSQU'A CE QU'IL(S) LAISSE(NT) PASSER LE DEBIT NOMINAL. L'INVENTION TROUVE SON UTILISATION DANS LE DOMAINE DES POMPES HYDRAULIQUES, ET EN PARTICULIER DANS CELUI DES TURBINES-POMPES UTILISEES DANS LES CENTRALES HYDRAULIQUES DESTINEES A LA FOURNITURE D'ENERGIE ELECTRIQUE. PUMP START-UP PROCESS, IN PARTICULAR PUMP-START-UP PROCESS, PUMPS OR TURBINE-PUMPS BEING OF THE TYPE WITH A FIXED DISTRIBUTOR-DIFFUSER, AND ACCORDING TO WHICH THE VARIATION POWER CURVE IN VARIATION OF FLUID FLOW RATES THROUGH A MINIMUM LOCATED BETWEEN ZERO FLOW POINT AND NOMINAL FLOW POINT. IN ACCORDANCE WITH THE INVENTION, THE PROCESS IS CHARACTERIZED BY THE SEQUENCE CONSISTING OF ROTATION, AT A SPEED BELOW THE NOMINAL SPEED, THE PUMP MOTOR, THE GUARD TAP (s) BEING CLOSED; WHEN THE PRESSURES ON EITHER SIDE OF THE SAID OR SIDED GUARD VALVES HAVE REACHED A DIFFERENTIAL VALUE EITHER NULL OR LOW ENOUGH SO THAT THEIR OPENING CAN BE CARRIED OUT WITHOUT RISK OF ...

Water current power generation systems

A water current power generating system comprises a support structure (2) located on a bed (3) of a body of water. A power generating apparatus (4), such as a water current turbine device, is mounted on the support structure (2), by way of a mounting portion (6). The system also includes a measurement unit operable to determine operating information relating to operation of the system, and a controller operable to determine loading on the system from such operating information, and to adjust a controlled parameter of the system such that loading on the system falls below a predetermined threshold value.

A kind of external automatic control electricity generation system of undercurrent type

本发明涉及水力发电技术领域，提供了一种潜流式外置自控发电系统，包括进水单元、水轮机、发电机；进水单元为喇叭状，喇叭开口方向为来水方向；进水单元与水轮机进水一端固定连接；水轮机尾端设置有轮体，轮体与水轮机转轴或水轮机旋转浆片外缘固定连接；轮体与水轮机转轴同步转动；轮体外周缘设置有轮齿；轮体直径大于发电机齿轮直径；发电机与轮体通过齿轮啮合或链条传动连接。本发明的有益效果为：适用于山地河流或具有高程差的河流，对流量限制小，适用范围广；不需要拦河筑坝，系统的主要部分设置于水下，保护了生态环境；模块化，多个系统可串联使用，提高发电效力；设计新颖、合理，应用前景广阔。

Tidal power generation system and methods

The invention provides a system for the extraction of energy from an underwaterflow stream in a body of water. The system comprises a support frame which comprises a plurality of receptacles for mounting functional modules on the support frame. The plurality of receptacles are arranged to form a horizontally-distributed two-dimensional array on the support frame. The plurality of vertical axis turbine units is configured to be interchangeably mounted in the receptacles.

A tidal power generator and tidal power generation system in deep water

본 발명의 일 실시 예에 따른 심해저 해류 발전기는, 해저에 일정한 깊이를 파고 들어가 고정되는 계류부, 변속기가 장착되고 해류의 흐름을 이용하여 전력을 생산하는 발전기, 상기 발전기의 일측에서 상기 발전기의 구동축에 연결되는 프로펠러, 일단은 상기 발전기와 연결되고 타단은 상기 계류부와 연결되며, 상기 발전기로부터 생산된 전력을 저장소로 이송하고, 상기 발전기가 상기 계류부로부터 일정한 범위 내에 위치할 수 있도록 하는 제1라인, 일단이 상기 제1라인의 타단과 전기적으로 연결되며, 타단은 상기 저장소에 연결되고, 상기 발전기로부터 생산된 전력을 상기 저장소로 이송하는 제2라인 및 상기 발전기에 연결되는 적어도 2개 이상의 부유체들을 포함한다. A deep-sea current generator according to an embodiment of the present invention includes a mooring part fixed by digging a certain depth into the seabed, a generator equipped with a transmission and generating power using the flow of an ocean current, and a drive shaft of the generator from one side of the generator A propeller connected to a first end connected to the generator and the other end connected to the mooring unit, transferring the power generated from the generator to a storage, and allowing the generator to be located within a certain range from the mooring unit A line, one end is electrically connected to the other end of the first line, the other end is connected to the storage, and at least two or more parts connected to the second line and the generator for transferring the power generated from the generator to the storage. include fluids.

Water current power generation systems

A water current power generating system comprises a support structure (2) located on a bed (3) of a body of water. A power generating apparatus (4), such as a water current turbine device, is mounted on the support structure (2), by way of a mounting portion (6). The system also includes a measurement unit operable to determine operating information relating to operation of the system, and a controller operable to determine loading on the system from such operating information, and to adjust a controlled parameter of the system such that loading on the system falls below a predetermined threshold value.

Apparatus for generating electrical power from tidal water movement

一种潮汐驱动的发电机(1)，其具有一系列的涡轮(2)，每个被安装在离岸位置的水下。每个涡轮(2)具有叶片(3)，水的潮汐流动使其转动，以给相应的发电机(4)提供功率，该发电机(4)经由相应的变压器(5)输出AC电功率到线缆(6)和适当的开关设备(7)。线缆(6)被连接到设置在岸上的一较远的变压器(8)，并且变压器(8)被连接到包含AC/DC转换器的驱动(9)的两个AC输入，其一个输入(10)经由线缆被连接到控制反馈装置(11)。控制反馈装置(11)可以是流量计，其确定潮汐流的速度，或者可以包含查询表，其包含关于在任何特定时间的潮汐流速度的信息。驱动(9)沿着缆线(13)输出DC电信号到DC/AC转换器(14)，其经由变压器(15)输出AC电功率到固定频率的本地供电网(16)。驱动(9)也通过调节从驱动(9)经由开关设备(7)输出到涡轮的信号的频率来控制每个涡轮(2)的转速。

System for recovering hydraulic energy

Water current power generation systems

A water current power generating system includes a support structure located on a bed of a body of water. A power generating apparatus, such as a water current turbine device, is mounted on the support structure, by way of a mounting portion. The system also includes a measurement unit operable to determine operating information relating to operation of the system, and a controller operable to determine loading on the system from such operating information, and to adjust a controlled parameter of the system such that loading on the system falls below a predetermined threshold value.

Water turbine load shedding control method considering service power safety

一种兼顾厂用电安全的水轮机甩负荷控制方法，包括以下步骤；对新建机组，改造增容或大修后的机组，在满足并网试运行条件后，进行甩负荷试验；采集并录制试验过程中的导叶开度、桨叶开度、机组残压频率、机组齿盘频率、蜗壳水压力、尾水水压力、抬机量的相关过程量信号曲线；建立与机组频率相关的甩负荷过渡过程机组阻尼比，机组频率上升率，机组频率下升率，蜗壳水压上升率，尾水真空度以及抬机量数据初始值；设计甩负荷过渡过程控制边界条件；将甩负荷过程近似为欠阻尼振动过程；按照甩25％、50％、75％、100％额定负荷的顺序逐次进行试验。本发明合理解决调速及励磁系统在甩负荷过渡过程中引起的V/Hz限制、低频、过频保护动作问题，提高厂用电安全性。

Method and apparatus for optimizing performance of a kaplan turbine

A method and system for optimizing performance of a Kaplan turbine power generating unit are provided wherein an optimal "N-dimensional" virtual cam is populated with gate and blade positional settings producing maximum power output for a set of N operating parameters. The preferred parameters include head, flow, power generation level, physical situation of the unit, operating state of neighboring units, trash rack loss and a parameter indicative of cavitation (such as relative submersion level). When the system detects a unique set of operating conditions for which optimization is needed, an iterative optimization search is performed for the best gate and blade positional settings, which are then saved in memory (populating the cam matrix) for subsequent use when the same operating conditions are encountered. The optimal matrix divides parameters having ranges into range segments and treats other parameters as having discrete states. The optimization search is preferably performed while maintaining flow constant, and a flow characteristic search is performed to determine candidate gate and blade settings resulting in constant flow.

Primary frequency modulation method for speed regulator of variable-speed pumped storage unit

本发明涉及一种可变速抽水蓄能机组调速器一次调频方法，根据所述给定频率F G 与反馈频率F f 得到一次调频动作的有效频差Δf和一次调频功率调整量ΔP；将所述一次调频功率调整量ΔP与调速器的功率给定值P G1 叠加得到叠加后的功率给定P G2 ；获得变速机组水头、功率、开度、转速之间的关系，根据变速机组水头、功率、开度、转速之间的关系得到叠加后的功率给定P G2 对应的优化开度G v1 和优化转速N 1 ；在开度模式、转速模式和功率模式下分别将开度、转速、功率偏差转化为相应的开度调整量并调节开度；本发明通过分析抽水蓄能机组发电和抽水两种不同工况，以及可变速机组独特的变速控制方式，实现水轮机工况下变转速一次调频以及水泵工况下的一次调频功能，充分发挥可变速机组在支撑电网频率稳定方面的作用。

Tidal power generation apparatus and methods

Method for primary control of a hydroelectric power plant

Die Erfindung betrifft ein Verfahren zur Primärregelung eines Wasserkraftwerks mit – einer doppelt geregelten Turbine, – wenigstens einem ersten Stellglied, – wenigstens einem zweiten Stellglied, wobei – die ersten und zweiten Stellglieder in Abhängigkeit eines Ist-Werts einer Netzfrequenz eines die erzeugte elektrische Leistung aufnehmenden elektrischen Netzes zur Beeinflussung der Turbinenleistung nachgestellt werden, um einen Zielwert der Netzfrequenz zu erreichen. Die Erfindung ist dadurch gekennzeichnet, dass – die ersten Stellglieder nur in definiert vorgegeben Stellschritten verfahren werden, und danach – eine Regelung auf den Zielwert der Netzfrequenz durch Nachführen der zweiten Stellglieder erfolgt. The invention relates to a method for primary control of a hydroelectric power plant with a double-regulated turbine, at least one first actuator, at least one second actuator, wherein the first and second actuators depend on an actual value of a mains frequency of an electric power receiving the electrical power generated Adjusted network to influence the turbine power to achieve a target value of the grid frequency. The invention is characterized in that - the first actuators are moved only in defined predetermined setting steps, and then - a control to the target value of the mains frequency by tracking the second actuators takes place.

Hydroelectric power generation system

A power information acquisition unit (32), which acquires power that can be accepted by an electrical grid (5) or power supply information that includes information correlated with said power, is provided. Fluid information acquisition units (17, 18), which acquire fluid information that includes information correlated with the physical quantity of a fluid that flows out from a flow path (1), are provided. Control units (20, 30), which use the power supply information to maintain the power that is supplied to the electrical grid (5) at a level equal to or less than the power that can be accepted by the electrical grid (5) and also use the fluid information to control at least one of the physical quantity, the flow path (1) and the power generated by a generator (G) such that the physical quantity reaches a desired value, are provided.

A kind of monitoring formula water pipe pipe power generating system

本发明公开了一种监测式水管道发电装置，包括引水管道、传感器、整流片、支撑盘、水轮机、发电机、蓄电池和LED显示器，引水管道的首尾与输水管道相接，传感器连接于引水管道上用于监测水流，传感器内设置有用以控制水流的电控阀门；支撑盘与引水管道的两端相连通且前后设有整流片，水轮机安装于支撑盘内，水轮机主轴与发电机的主轴共线且通过增速齿轮箱相连，水轮机通过捕获管道内水流能量，经由增速齿轮箱后驱动发电机发电。该装置可在利用水流发电的同时，随时监测来流各项情况并自主控制阀门，调节来流流量，可应用于中型及小型输水管道，尤其是家用输水管道中，起到发电、监测、节流的目的。

Method of controlling fluid volumes delivered by centrifugal pump equipped with adjustable diffusor having turnable vanes

Method for primary adjustment of a hydroelectric power plant

Improvements for the control of an underwater turbine.

Método y sistema para proporcionar una advertencia de proximidad que comprende generar un primer campo magnético, generar un segundo campo que traslape al primero, determinar una ubicación de un dispositivo detector con respecto al primer y segundo campos magnéticos y emitir una advertencia. Method and system for providing a proximity warning comprising generating a first magnetic field, generating a second field overlapping the first, determining a location of a sensing device with respect to the first and second magnetic fields, and issuing a warning.