IPSEC (internet protocol security) VPN (virtual private network) device, isolation method thereof and isolation system thereof

The invention provides an IPSEC (internet protocol security) VPN (virtual private network) device, an isolation method thereof and an isolation system thereof. The device comprises an inner end host, an outer end host and a non-network isolation card, the inner end host and the outer end host respectively maintain the same IP (internet protocol) mapping table, each table entry defines information such as a primary address, a destination address and IP mapping ID (identity), a data packet realizes network isolation by modes such as IP head stripping and recombination, IP mapping table search and filtering, private protocol capsulation and decapsulation and non-network isolation card transmission, an IPSEC VPN network data packet is encrypted and decrypted on an internal network host by the data packet, the device can resist malicious attack behaviors and transmission of viruses, Trojans and malicious plug-ins, security isolation in connection of an internal network and an external network ...

Method and system for online parameter adjustment of electrical network state detection system

The invention provides a method and system for online parameter adjustment of an electrical network state detection system. The method comprises: first of all, obtaining set parameters of an electrical network state estimation system, performing online acquisition of electrical network operation state parameters after access into an electrical network, then calculating the correction parameters of the electrical network state estimation system, making a comparison between the electrical network operation state parameters and the correction parameters of the electrical network state estimation system and preset standard parameters of the electrical network state estimation system, and determining an assessment effect of the current electrical network by the electrical network state estimation system. According to the invention, in a whole parameter adjustment process, through on-line acquisition of real electrical network data and correction parameters of the electrical network state estimation ...

Grid equipment graphic element allocation method

The invention aims to provide a grid equipment graphic element allocation method. The method includes: establishing a spatial GIS (geographic information system) graphic element allocation model comprising an equipment legend table, a graphic element style rule table, and a style table; finding out corresponding legend styles according to equipment legend rules and rendering in the graphic element allocation process. The grid equipment graphic element allocation method which is more flexible and softer to expand is provided according to China southern power grid GIS graphic element specifications and is provided in order to overcome the defects of the existing grid GIS graphic element allocation method. A graphic element allocation model and a correspondence amongst each style of grid equipment, graphic element display rules and graphic element symbols are established according to a relational database, so that various grid devices under the GIS system platform can be conveniently monitored ...

Method and detection device for detecting AVC (Automatic Volume Control) system

The invention provides a method and device for detecting an AVC (Automatic Volume Control) system. The method comprises the following steps: acquiring section power flow data of an electric power system at a moment; performing power flow calculation on the section power flow data; calling a BPA (Bonneville Power Administration) program according to the power flow calculation result, thereby respectively generating initial section power flow data of the electric power system under each preset running scene; respectively inputting the initial section power flow data under each preset running scene into a to-be-detected AVC system; according to the control operation of the to-be-detected AVC system, respectively acquiring new section power flow data of the electric power system after performing the control operation under each preset running scene; and comparing the new section power flow data under each preset running scene with preset standard section power flow data and judging the control ...

Time frequency tester

The invention discloses a time frequency tester, comprising a GPS satellite receiver as well as a measurement module and a display module which have a built-in punctual module respectively, the time frequency tester is provided with a time-service Beidou satellite receiver; the measurement module further comprises a FPGA and an ARM series single chip machine connected therewith; the PFGA at least has three time modules which respectively exchange data with and access the Beidou satellite receiver, the GPS satellite receiver and the ARM series single chip machine. The time frequency tester is scientifically designed and reasonably structure so as to become a specific measurement instrument designed for power system and can adapt to the measurement of IRIG-B time signal extensively applied in the power system and of network time signal NTP/SNTP required by a digitized substation, and the electric type of the measurement signal can be active, passive and differential and time characteristic ...

File compression and decompression methods for Power PC framework novel movement device of Nucleus system

The invention relates to file compression and decompression methods for a Power PC framework novel movement device of a Nucleus system, belonging to the technical field of data compression processing. According to the method, a zlib function library of a free software is transplanted on a Power PC framework of an embedded real-time Nucleus operation system; through improvement of the zlib function library, the zlib function library adopts a file pointer manner when performing read-write operation on a disk file, so that the data of a file to be compressed or a decompressed file is put in a typeless pointer chain table through dynamic development of a memory space, a cache visit function is increased, and the file operation efficiency is improved. Particularly, for the embedded real-time communication system, under the condition of relative shortage of various system resources, less system resources are used, and good compression and decompression effects can be provided for various data ...

Virtual machine-based security risk evaluation method for power dispatching automation system

The invention discloses a virtual machine-based security risk evaluation method for a power dispatching automation system. In the method, security risk evaluation is performed on an information system in the power dispatching automation system by a method for simulating a real system and a network environment according to a virtual system and a network environment. The method sequentially comprises the following steps of: establishing virtual system equipment; establishing a hardware environment of the virtual system equipment; establishing a software environment of the virtual system equipment; setting a network topology structure of the virtual system and the network environment; acquiring the software configuration of the real system and the network environment; setting software configuration of the virtual system equipment; and performing security risk evaluation on the virtual system and the network environment. By the method for simulating the real system and the network environment ...

Power distribution network overhead line single-phase grounding fault recognition positioning method and fault indicator

The invention provides a power distribution network overhead line single-phase grounding fault recognition positioning method and a fault indicator. The power distribution network overhead line single-phase grounding fault recognition positioning method includes the following steps that 1, after a circuit operates normally, the electric field intensity or voltage of the circuit is detected, and if it is detected that the brake variable of the electric field intensity of a certain phase of the circuit or the voltage or the brake variable of the voltage exceeds the set grounding fault threshold value and lasts more than a period of time, a fault early-warning signal is sent out; 2, the current waveforms of the three phases of the circuit are collected synchronously, zero-sequence current synthesis is conducted, and if the circuit zero-sequence current or zero-sequence current brake variable is larger than the set threshold valve, it is judged that the single-phase grounding fault exists in ...

Electric power system that heat -sinking capability is strong synthesizes data communication device machine case

The utility model provides an electric power system that heat -sinking capability is strong synthesizes data communication device machine case, includes lower plate, side board (2) and front panel (5) and rear panel, its characterized in that: the top installation heat rejection apparatus of quick -witted case, heat rejection apparatus include aluminum alloy heat dissipation apron (1) and two at least fixed bolster (4). The utility model discloses an it not only has a good radiating effect machine case, and can satisfy electric power system to device shell's protection requirement, avoids electric power system to synthesize data communication device produced over heating issue when running without interruption for a long time.

Evaluation system and method for intelligent substation

An evaluation system for an intelligent substation comprises an evaluation service platform and at least one terminal center, wherein the evaluation service platform is connected with the terminal center. The terminal center conducts acquisition according to preset data or according to data issued by the evaluation service platform; a four-stage progressive structuralized evaluation index system construction method is adopted for an intelligent substation evaluation index system, wherein the four stages of the construction method refer to a technique layer, an index layer, a criterion layer and a target layer, and the technical advancement degree of the intelligent substation can be reflected. In order to reflect the overall technical development stage of different intelligent substations, the evaluation service platform adopts a grey clustering evaluation method for processing indexes to obtain gray clustering evaluation result values under different grey classes, and a technical development ...

Access network testing method and device of power station intelligent equipment

The invention discloses an access network testing method and device of power station intelligent equipment. The method comprises the steps of analyzing a configuration file, acquiring effective equipment nodes in the configuration file, extracting configuration information corresponding to the effective equipment node, determining the closed loop relation of equipment corresponding to the effective equipment nodes according to the configuration information, conducting closed loop testing on the equipment corresponding to the effective equipment nodes according to the closed loop relation of the equipment corresponding to the effective equipment nodes, monitoring the message receiving and sending condition of the equipment corresponding to the effective equipment nodes, and giving an alarm when messages beyond the closed-loop relation occurs. The closed loop testing is automatically conducted on the intelligent equipment, so that the construction cycle of the intelligent power station is ...

Intelligent switcher

The invention discloses an intelligent switcher which is characterized by comprising a multi-station switcher, an electronic tag and a magnetic core code piece, wherein the signal output end of the multi-station switcher is connected with the signal input end of the electronic tag; and the signal output end of the electronic tag is connected with the signal input end of the magnetic core code piece. The invention has the advantages that the multi-station switcher operates in the manner of code reading and is controlled by a background host, has high intelligent degree and can realize lockout; and by combining with a monitoring anti-incorrect manipulation system of a computer, the electrical operation is more reliable.

Power grid across-business integrated remote regulation and control system

The invention provides a power grid across-business integrated remote regulation and control system. The power grid across-business integrated remote regulation and control system is characterized by comprising a single-point login module, a wiring diagram linear reachable module, a cockpit position adjustable module, a data safety configuration module and a visual user activity recording module. According to the power grid across-business integrated remote regulation and control system, data safety can be guaranteed in the remote regulation and control process, visual user activity records are stored in real time, information check and information retrieval are supported, and the aim of supervising user activities is achieved.

Power grid resource module building method based on GIS (geographic information system)

The invention provides a power grid resource module building method based on GIS (geographic information system) and aims to solve the problems that the existing power grid resource models are non-uniform in data standard, limited in processing area, single in technical measure, and the like. On the basis of satisfying power grid resource model design principles, the GIS technology is used as the main data to be displayed in the management technology, large-range data is processed in a standardized manner and uniform power grid resource models are generated. The method includes the steps of firstly, collecting and organizing power grid resource data; secondly, processing the power grid data and GIS spatial data in a standardized manner; thirdly, building a spatial database; fourthly, building a power grid database; fifthly, building the power grid resource models.

Distribution automation terminal and AC (Alternating Current) sampling channel expansion method thereof

The invention relates to a distribution automation terminal comprising a DSP (Digital Signal Processor). The signal input end of the DSP is respectively connected with a voltage transformer, a current transformer and a switching value input circuit, wherein the signal output end of the DSP is connected with a relay, the signal input end and the signal output end of the DSP are accessed into the Ethernet through a W5100 chip, and the DSP is connected with a memory card. The invention also discloses an AC (Alternating Current) sampling channel expansion method of the distribution automation terminal. The invention can be used for accurately calculating the three-phase voltage and the three-phase current of multiple channels and monitoring various pulse amounts and state amounts by adopting the DSP as a CPU (Central Processing Unit) and combining with an analog switch, and has the advantages of high processing speed, measuring accuracy and reliability, small size, low maintenance and repairing ...

Electrical equipment matching method and system

The invention discloses an electrical equipment matching method and system. The method comprises the steps that according to the name sample of electrical equipment, a matched knowledge base is established; reference equipment names and names of equipment to be matched are obtained, equipment objects of the reference equipment names are obtained, and according to the equipment objects of the reference equipment names, corresponding feature vector expressions and matching rules are obtained from the matched knowledge base; according to the feature vector expressions, the feature vectors of the reference equipment names and the feature vectors of the names of the equipment to be matched are extracted from the reference equipment names and the names of the equipment to be matched; and according to the matching rule, whether the feature vectors of the reference equipment names and the feature vectors of the names of the equipment to be matched are equivalent is judged, and if yes, the matching ...

Reliability assessment method for power grid multi-link system

The invention discloses a reliability assessment method for a power grid multi-link system. According to the method, influences of a power transmission network on the reliability of a power distribution network are quantified through the equivalence of the reliability of a load and the reliability of a power supply, the limitation of the assumption that traditionally the reliability of a traditional power distribution network is that the power supply is completely reliable is broken, and a calculation result accords with engineering practice of the power grid; in the method, a loop is used as the basic unit of a reliability assessment of the power transmission network, and a preconceived accident set is further formed, so that the system condition number in the preconceived accident set is substantially reduced, and the statistic analysis of engineering data of the reliability is facilitated. The reliability assessment method can be used for analysis of the sensitivity of reliability indexes ...

Method for configuring operating parameters of secondary equipment of intelligent substation

The invention provides a method for configuring operating parameters of secondary equipment of an intelligent substation. The method comprises the following steps of: respectively performing modeling on the secondary equipment and performing system integration on all equipment models to obtain a full-station SCD (Security Coding Device) model file; acquiring a configuration file of the equipment model of each secondary equipment by utilizing the full-station SCD model file and acquiring a constant value parameter list of each secondary equipment; setting constant value parameters of the secondary equipment through a constant value form interface, and summarizing the constant value parameters to form a digital constant value form; and downloading the digital constant value form to the secondary equipment operating at site, and configuring the operating parameters of the secondary equipment. In the technical scheme, uniform configuration for the operating parameters of the secondary equipment ...

Device, method and system for processing power grid data

The invention discloses a device, method and system for processing power grid data. The device comprises a power grid element parameter management module, an SCADA module, a state estimation/parameter identification module and a power grid data quality analysis and evaluation module, wherein the state estimation/power grid data quality analysis and evaluation module is connected with the power grid element parameter management module, the SCADA module and the power grid data quality analysis and evaluation module, and the power grid data quality analysis and evaluation module is connected with the SCADA module. By means of the technical scheme, manual workloads of data collection, statistics, analysis and evaluation in power grid data quality analysis and evaluation can be effectively reduced, and the power grid data quality management efficiency is improved.

Method for detecting digitized transformer station model

The invention discloses a method for detecting a digitized transformer station model. In recent years, IEC61850 and digitized transformer stations are developed quickly; however, great difference exists due to different producers and different device models, which brings great difficulties and hidden troubles to debugging and running; therefore, a detection means and a method which are simple, practical, effective and comprehensive are needed. In accordance with an IEC61850 standard, the method for detecting the digitized transformer station model supports a standardized detection aiming at the domestic 'Engineering Implementation Technical Specifications of IEC61850 International Standard', and is widely applied to the model detection of digitalized and conventional IEC61850 transformer station comprehensive automatic systems, wherein the method comprises the following steps of: detecting whether an XML format is right and performing Schema verification; detecting basic unit data, namely ...

Fault traveling wave collecting device and system for medium voltage distribution network

The invention discloses a fault traveling wave collecting device and system for a medium voltage distribution network. The fault traveling wave collecting device is provided with a low-speed phase voltage collecting circuit and a trigger circuit to detect whether a power transmission line is in fault or not at the sample rate of 2 kHz, and after the line is in fault, a high-speed traveling wave signal collecting circuit is used for collecting the current and voltage signal of the traveling wave at the sample rate of 1 MHz, and therefore, the device and the system can ensure high precision and high integrity for the traveling wave collection by ensuring high traveling wave sample rate, and at the same time, the requirements for the capacity of processing, storing and transferring data for the device are reduced, and the problem of the contradiction between the collecting requirements of high integrity and high precision of the traveling wave signal and large data size at the high-speed collecting ...

Intelligent cloud analyzing system of power gird system and data analyzing method thereof

The invention discloses an intelligent cloud analyzing system of a power grid system. The intelligent cloud analyzing system comprises a basic storage layer, a high-class access layer, an application interface layer and a basic management layer, wherein the basic storage layer is used for pre-storing basic computing resources and basic information data; the high-class access layer is used for providing a unified standard interface and terminal equipment for data transmission; the application interface layer is used for carrying out information verification on the terminal equipment, storing the computing resources of the terminal equipment and the information data of the terminal equipment in the basic storage layer if the terminal equipment passes the information verification, detecting whether idle computing resources exit, and transmitting a computing request of the terminal equipment to the basic management layer if the idle computing resources exit; and the basic management layer is ...

Operating system test method and test system

The invention provides an operating system test method and test system. The method comprises the following steps of: setting test point types to be tested, wherein each test point type comprises function indexes, performance indexes and availability; and respectively testing the test point types, and recording test results of all the test point types. According the scheme in the invention, function and performance of an operating system can be comprehensively tested, the functions and performances of the operating systems of different manufactures can be conveniently compared, and type of the operating system can be conveniently selected.

Method for interactively iterative control of voltage reactive power of regional power grid

The invention discloses for a method for interactively iterative control of voltage reactive power of a regional power grid. By performing iterative analysis calculation on basic information such as a voltage which is transmitted to a control center from the regional power grid, reactive compensation, power angle and a relay protection device, an instruction of controlling the voltage reactive power of the current regional power grid is obtained. The method is simple and quick.

Data isolation device based on non-network mode, and method and system thereof

The invention provides a data isolation device based on a non-network mode, and an isolation method and an isolation system thereof. The data isolation device comprises an intranet host, an extranet host, and an isolated communication module. The intranet host and the extranet host are loaded with a network protocol stack, and respectively maintain a TCP proxy client module and a TCP proxy server module. A TCP connection socket1 is established and data forwarding is carried out between the TCP proxy server module and a service data packet client. A TCP connection socket2 is established and data forwarding is carried out between the TCP proxy client module and a service data packet server. The isolated communication module uses a proprietary protocol. The TCP header and following message headers of a service data packet are removed. Only pure service data load forwarding is carried out. Four-layer isolated subsystem communication between inner-end and outer-end hosts is realized on the whole ...

Active power distribution network power flow optimization method and device and storage medium

The invention provides an active power distribution network power flow optimization method and device and a storage medium aiming at power flow optimization requirements of a high-permeability distributed photovoltaic access power distribution network, and the method comprises the following steps: obtaining power distribution network line electrical parameters, load information and distributed photovoltaic information; establishing an intelligent soft switch model, and determining model parameters; and optimizing the power flow of the power distribution network by adopting a differential evolution algorithm. According to the method, through the differential evolution algorithm, the power input at each intelligent soft switch is taken as an independent variable, and the minimum sum of the network loss and the voltage out-of-limit condition is taken as an optimization target, so that the voltage control and power flow optimization of the power distribution network can be realized, and the ...

Test method and device for regional master station in power grid video and environmental monitoring system

The invention discloses a test method and device for a regional master station in a power grid video and environmental monitoring system. The method is characterized by comprising the following steps of: accessing the power grid video and environmental monitoring system; simulating a test of a provincial master station for the regional master station; simulating a test of a plurality of station end systems for the regional master station; and generating testing result statements. The invention ensures that the test process is carried out in the simulation of real operating conditions through simulating equipment in the power grid video and environmental monitoring system and equipment to be tested to perform inter-communication, and therefore the test is accurate. Meanwhile, the method can automatically operate after a test scheme is set, and the test is fast and convenient.

Server-side simulating system based on IEC61850 and method thereof

The invention provides a server-side simulating system based on an IEC61850 and a method thereof, which are applied to digital substations adopting the IEC61850 for communication and traditional substations. The system consists of a simulator terminal and a simulator console. The method comprises the following steps: loading an SCD model at the simulator terminal for analyzing; breaking out a CID model file needed by an IED; carrying out man-machine interaction in a tree diagram and tabular form to allocate one data generator for each module data; generating state sequence through the data generator; downloading the state sequence to the simulator control table; loading the CID model broken out by the simulator terminal on the simulator console for analyzing; establishing an IEC61850 database, organizing the trackback path information of the IEC61850 model orderly; addressing the IEC61850 database according to the model trackback path corresponding the data generator; refreshing the IEC61850 ...

Communication control method between region-level master station and remote system

The invention discloses a communication control method between a region-level master station and a remote system. The method is applied to a power grid monitoring system, which includes a region-level master station and a remote system connected with an IP (international protocol) communication network, wherein the region-level master station includes a master station server; and the remote system includes a remote system processing unit and a front end monitoring apparatus. The remote system processing unit acquires the configuration information from the front end monitoring apparatus, and uploads the configuration information to the master station server; and the master station server acquires the IP address of the remote system processing unit and the configuration information of the front end monitoring apparatus to construct a corresponding control interface, and communicates with the remote system processing unit to achieve control of the front end monitoring apparatus in the remote ...

Intelligent cloud analyzing system of power gird system and data analyzing method thereof

AVC (Automatic Voltage Control) evaluation method and system

The invention provides an AVC (Automatic Voltage Control) evaluation method and system. The method comprises the following steps of: applying an IEC (International Electrotechnical Commission) 61970 standard and an SVG (Scale Vector Graphics) standard to an AVC system; and carrying out state estimation and evaluation on an SCADA (Supervisory Control And Data Acquisition) data and a reactive optimization result in the AVC system. In the AVC evaluation method and system, by using the AVC system and an SCADA system, the IEC 61970 standard and the SVG standard and technologies are applied to artwork maintenance of the AVC system, and then data in the SCADA system and the voltage optimization result of the AVC system are evaluated. Therefore, the problem that the actual condition of the AVC system is reflected by adopting a single evaluation coefficient in the prior art is avoided, the actual condition of the AVC system is better reflected, and more detailed information is provided for the scheduling ...

Grid equipment data verification method

The invention aims to provide a grid equipment data verification method. The grid equipment data verification method is characterized by comprising the following steps of establishing a data verification and collocation model, including establishing an equipment attribute list, an equipment attribute rule contrast list and a rule list; performing a data verification and collocation process, i.e. finding a verification rule according to an equipment type and checking whether data are standard or not. The invention aims to provide a grid data verification and collocation method which is more flexibly expanded in order to overcome the defects of the current grid GIS data verification and collocation method. The method is used for establishing a verification rule collocating model in a relation database and maintaining corresponding relation between each type of grid equipment and a verification rule.

System employing ppp protocol packaging-based IPsec frame structure and method

The invention relates to a system employing ppp protocol packaging-based internet protocol security (IPsec) frame structure. The system comprises a user space unit and a kernel space unit. The user space unit includes a management module, a service module, a secret key protocol module, and a dialing module; the kernel space unit includes a kernel drive module, a kernel task module, a kernel configuration and state storage module, a kernel interface, and a kernel algorithm scheduling module. In addition, the invention also relates to a service data transceiver method using the IPsec frame structure system. According to the scheme, the ppp protocol packaging-based IPsec frame structure is realized by using SM series algorithms of the State Cryptography Administration, thereby realizing communication security of the industrial terminal; security protection of service terminal equipment of various types like the internet port type, the serial port type, and the industrial bus type and the like ...

Server-side simulating system based on IEC61850 and method thereof

The invention provides a server-side simulating system based on an IEC61850 and a method thereof, which are applied to digital substations adopting the IEC61850 for communication and traditional substations. The system consists of a simulator terminal and a simulator console. The method comprises the following steps: loading an SCD model at the simulator terminal for analyzing; breaking out a CIDmodel file needed by an IED; carrying out man-machine interaction in a tree diagram and tabular form to allocate one data generator for each module data; generating state sequence through the data generator; downloading the state sequence to the simulator control table; loading the CID model broken out by the simulator terminal on the simulator console for analyzing; establishing an IEC61850 database, organizing the trackback path information of the IEC61850 model orderly; addressing the IEC61850 database according to the model trackback path corresponding the data generator; refreshing the IEC61850 ...

GOOSE message authentication method based on transformer substation

The invention aims to provide a GOOSE message authentication method based on transformer substation communication. The method comprises the following steps: introducing identity authentication, message authentication and key management; adding the identity authentication, the message authentication and key information into a reserved field and an extension field in a GOOSE message for sending together with the original message to realize authentication of GOOSE message sending and receiving, wherein the field transform meets the TLV (Threshold Limit Value) transformational grammar of an ASN.1 basic coding rule, the original message and an authentication message can be compatible in an automatic communication system of the transformer substation, and an IEC 62351 standard is reached. By adopting the authentication method, hackers are prevented from taking the attack measures of illegal authentication, tampering, replay, repudiation and the like, so that the secrecy, integrity, availability ...

Method for testing process-level network test method

The invention discloses a method for testing the process-level network, comprising the following steps of: firstly, testing the performance of a single switch, then testing the service transmission performance of a process-level network accessed to the switch in the actual network environment so as to judge whether the network meets the operating requirement; finally, testing the service transmission performance of the process-level network under the abnormal condition, and judging the maximum abnormal data volume which can be borne by the process-level network so as to acquire the critical state of the network. The invention carries on research by aiming at the method for testing the process-level network of a digital transformer substation and provides the method for testing the process-level network of the digital transformer substation. The method places the extra emphasis on testing the transmission performance of corresponding data in the actual network environment and testing the ...

Power grid service system integrated remote adjusting and control information interaction method

The invention provides a power grid service system integrated remote adjusting and control information interaction method which can achieve adjusting and control information interaction between local and remote heterogeneous power grid service system applications. The power grid service system integrated remote adjusting and control information interaction method comprises the specific step that a DVAIB for storage management and a DVAIM are arranged on physical nodes for conducting adjusting and control information interaction in power grid service systems, wherein the DVAIB locally stores received adjusting and control DVAI needing interaction, the DVAIM receives and transmits the DVAI, the DVAIM is responsible for delivering and signing in the DVAI of the physical nodes of the service systems, and the DVAI is stored into the local DVAIB after being signed in by a receiving party.

Five-prevention logic test method of 61850 transformer substation and system thereof

The invention provides a five-prevention logic test method of a 61850 transformer substation and a system thereof. The method comprises the following steps: according to the regulation of the standard five-prevention logic, simulating a GOOSE massage signal output by each interlayer device via a computer technique; inputting the GOOSE massage signal of each interlayer device except the interlayer device to be detected into the interlayer device to be detected through a GOOSE communication network, wherein the interlayer device to be detected stores the five-prevention logic to be tested in advance; feeding back the switching value output by the interlayer device to be tested according to the five-prevention logic through a hardware connection line; and according to the fed-back switching value and the standard five-prevention logic, judging whether the five-prevention logic to be tested is right. The five-prevention logic test method of the 61850 transformer substation reduces the mass ...

GPRS signal detection method and system

The invention discloses a GPRS signal detection method and system. The system comprises a lower computer sub system for collecting GPRS signals and an upper computer sub system for sending AT commands to the lower computer sub system. The lower computer sub system comprises a GPRS modulation-demodulation module, an SIM card and an antenna module. The SIM card and the antenna module are connected with the GPRS modulation-demodulation module. The SIM card is used for carrying out GPRS communication identification, carrying out modulation and demodulation on GPRS communication signals and sending the GPRS communication signals after modulation and demodulation to upper computer sub system for signal quality detection. According to the method and system, detection operation is simple, devices are convenient to carry, and cost is low.

Transformer station simulation training system based on mixed digital/analogy simulation technology

The invention discloses a transformer station simulation training system based on the mixed digital/ analogy simulation technology. The transformer station simulation training system comprises a primary simulation system of an electric power system on the side of trainers and a secondary equipment system of a transformer station on the side of trainees. The primary simulation system of the transformer station is used to simulate running states of primary equipment of the electric power system in normal and failed conditions, and transmit data in normal and failed conditions to the secondary equipment system of the transformer station to drive secondary equipment of the transformer station, the transformer station trainees can monitor entire data of the electric power system through the secondary equipment of the transformer station, and the data reflect the real running states of the primary equipment of the electric power system. The transformer station simulation training system provided ...

Five-prevention logic test method of 61850 transformer substation and system thereof

The invention provides a five-prevention logic test method of a 61850 transformer substation and a system thereof. The method comprises the following steps: according to the regulation of the standard five-prevention logic, simulating a GOOSE massage signal output by each interlayer device via a computer technique; inputting the GOOSE massage signal of each interlayer device except the interlayerdevice to be detected into the interlayer device to be detected through a GOOSE communication network, wherein the interlayer device to be detected stores the five-prevention logic to be tested in advance; feeding back the switching value output by the interlayer device to be tested according to the five-prevention logic through a hardware connection line; and according to the fed-back switching value and the standard five-prevention logic, judging whether the five-prevention logic to be tested is right. The five-prevention logic test method of the 61850 transformer substation reduces the mass operations ...

Electric power system 1:1 voltage class distribution network single-phase ground fault simulation test platform

The invention discloses an electric power system 1:1 voltage class distribution network single-phase ground fault simulation test platform. The electric power system 1:1 voltage class distribution network single-phase ground fault simulation test platform comprises a neutral grounding module, a 10 kV bus, a 10 kV pi-type equivalent model electric transmission line module and a single-phase ground fault module. The electric power system 1:1 voltage class distribution network single-phase ground fault simulation test platform can dynamically simulate a single-phase ground fault of an overhead line of different lengths and a cable line of a distribution network in a 1:1 voltage class. The electric power system 1:1 voltage class distribution network single-phase ground fault simulation test platform can simulate different neutral grounding modes, such as neutral ungrounding, neutral low-resistance grounding and neutral grounding through an arc suppression coil; transmission lines of different ...

Power distribution grid fault positioning method with high precision and low cost

The invention discloses a power distribution grid fault positioning method with high precision and low cost. According to the fault positioning method, a small amount of traveling wave detection devices with GPS time comparison functions are mounted at two ends of different overhead lines and cable lines of a power distribution grid; when the power distribution grid has faults, the wave speeds of traveling wave line mode component and floor mold component in different lines are calculated by using detection devices of a non-fault line, subsequently the distance of a fault point to one detection device is calculated according to the time difference of the traveling wave line mode component and the floor mold component reaching the detection device, and finally the position of the fault point is confirmed according to the ranging result of a plurality of detection devices. The power distribution grid fault positioning method can achieve accurate fault positioning, shortens the time for troubleshooting ...

Multi-source heterogeneous power grid operation parameter analysis system

The invention discloses a multi-source heterogeneous power grid operation parameter analysis system which comprises a data acquisition and analysis module, a multi-professional parameter fusion module, a multi-professional parameter fusion module and a professional parameter quality analysis module. The data acquisition and analysis module obtains multi-source power grid parameters, and analyzes the multi-source power grid parameters to obtain a heterogeneous power grid parameter file, the multi-professional parameter fusion module respectively obtains automation parameters, operating mode parameters and power grid parameters of the relay protection profession, and conducts contrastive analysis and data fusion processing to obtain fused automation parameters, operating mode parameters and power grid parameters of the relay protection profession, the multi-professional parameter fusion module conducts contrastive analysis and data fusion processing on the automation parameters, the operating ...

Monitoring system and method of load balance

The invention discloses a monitoring system and method of load balance. The method is applied to a grid monitoring system including a provincial master station monitoring system, a regional master station monitoring system, an end station monitoring system, two backbone networks, a plurality of servers, a server load comparing module and a network switch, wherein the two backbone networks are used for connecting the provincial master station monitoring system and the regional master station monitoring system as well as the regional master station monitoring system and the end station monitoring system; each server is connected with the two backbone networks and used for processing monitoring information interaction and storage of the monitoring system; the server load comparing module is arranged in the servers for comparing the load conditions of the servers; and the network switch is used for connecting the two backbone networks. The invention can not only realize the load balance of ...

Double-network online switching method of sampling values

The invention relates to a double-network online switching method of sampling values, comprising a double-network redundant data fast recognition algorithm and a double-network data online switching method. The double-network redundant data fast recognition algorithm achieves the purpose of fast recognition through caching some state information of the received data, and can fast and effectively recognize a double-network redundant message through utilizing the firstly arrived network transmission characteristic and the continuous characteristic of a sampling counter, analyzing the network source of the message, slightly decoding the redundant message and simply comparing. The double-network data online switching method updates a reception buffering area as soon as possible via the sampling value content which firstly arrives at a reception device, realizes the frame loss compensation via another network data which arrives more slowly when the sampling value data which arrives faster loses ...

Power grid equipment network analysis method and system based on SpatiaLite database

The invention provides a power grid equipment network analysis method and a power grid equipment network analysis system based on a SpatiaLite database. The power grid equipment network analysis method based on the SpatiaLite database includes steps: building a network analysis model in the SpatiaLite database; obtaining a circuit diagram layer of preset power grid equipment, and generating a circuit network of the power grid equipment according to the circuit diagram layer; reading attribute information of the circuit network, inserting the attribute information into the network analysis model, and obtaining an updated network analysis model; building network topology of the power grid equipment in the SpatiaLite database according to the updated network analysis model; when receiving a network analysis instruction, invoking the network topology, and executing network analysis according to the network analysis instruction. The power grid equipment network analysis method and the power ...

User behavior analysis method of management system

The invention provides a user behavior analysis method of an intelligent substation management system and a user behavior analysis system for implementing the method. By means of the method, user behavior analysis of the intelligent substation management system is achieved from the perspectives of data acquisition, resolution, storage and analysis. According to the method, by receiving user behavior data pushed by the system in real time, monitoring the on-line system to acquire abnormity data of the system and resolving the user behavior data to obtain user data, behavior data and result data, the correspondence between users, behaviors and results is built and then is stored and analyzed to obtain a user behavior data tree; the user behavior data tree is traversed, pre-analysis data are searched for and located according to the analysis requirement, the use condition and the operation habit of operators and the load distribution condition of the system are systematically learned about ...

Provincial main station system for monitoring transformer substation videos and environment

The invention discloses a provincial main station system for monitoring transformer substation videos and environment. The system is connected with various regional main station monitoring systems in a province through an IP (Internet Protocol) communication network for monitoring the real-time monitoring information of the regional main station monitoring systems. The invention realizes that power grid monitoring resources are integrally managed, the interaction and the communication of the monitoring information are established, resources are reasonably and effectively distributed and information share is established to the utmost. Meanwhile, the invention lightens the working intensity of inspection personnel, overcomes the defect of poor intuition of operators, enhances the safety detection of the transformer substation and improves the operation level of the transformer substation.

Relevance application method and relevance application system for transformer substation remote signaling signals and hard contact terminals

The invention discloses a relevance application method and a relevance application system for transformer substation remote signaling signals and hard contact terminals. The method comprises the following steps: obtaining the serial numbers of the hard contact terminals on remote signaling input plates of a space layer device; extending the attributes of the remote signaling signals according to the original names of the remote signaling signals and the serial numbers of the corresponding hard contact terminals; establishing a maximization model according to the maximum quantity of the remote signaling input plates which can be configured by the space layer device and the attributes of the remote signaling signals; selecting available remote signaling signals from the maximization model for configuration according to the quantity of the remote signaling input plates practically configured by the space layer device in field application. The remote signaling signals are associated with the ...

IEC61850 protocol-based electric measurement remote transmission method for measuring terminal based on IEC61850 protocol

The purpose of the invention is to provide an IEC61850 protocol-based electric measurement remote transmission method for a measuring terminal, wherein the method of the invention comprises the main steps as follows: 1) establishing a log control block and a log data set model; 2) periodically storing information of electric measurement; 3) defining a database model stored by an electric measurement log and serving as a universal set of a log record for inquiring and loading a log; 4) carrying out memory management to hold a certain number of log records, and holding the newest part of the log record according to time sequence; 5) carrying out log management, reloading historical information in the database after a device is powered again, and performing on-the-hour processing to current time to ensure accuracy of transmitted data and consistency of a master station. The method of the invention is used for transmitting the electric measurement data to the measuring master station in a remote ...

Photovoltaic power generation-based electric energy quality compensation controlling apparatus and method thereof

The invention provides a photovoltaic power generation-based electric energy quality compensation controlling apparatus and a method thereof. The apparatus comprises a photoelectric conversion module, a central control module, a direct-current processing module, an alternating-current voltage transformer module, an H bridge inverter module and a bypass switch module; and the bypass switch module includes a plurality of insulated gate bipolar transistors in inverted series connection. Because the photovoltaic power generation-based electric energy quality compensation controlling apparatus does not employ a series transformer, the size of the apparatus is small and the cost is low. The insulated gate bipolar transistors (IGBT) are used for forming the bypass switch module, so that the connection and disconnection of the bypass switch module can be carried out rapidly. Therefore, above all, the provided apparatus has the advantages of fast processing speed, simple structure, and low generation ...

Management method and system for configuration simplification of terminal safety equipment

The invention provides a management method and system for configuration simplification of terminal safety equipment. The method comprises the steps that a digital certificate system is set, IPSec VPN communication parameters for mutual communication between the terminal safety equipment and main station safety equipment are automatically configured through the digital certificate system, the digital certificate system generates digital certificate files of the terminal safety equipment and the main station safety equipment to complete initialization of the terminal safety equipment, the certificate file of the terminal safety equipment and the IPSec VPN communication parameters are sent onto the main station safety equipment so as to enable both the terminal safety equipment and the main station safety equipment to be capable of recognizing the IPSec VPN communication parameters for communication, and when the terminal safety equipment is powered on to work, the terminal safety equipment ...

Relational database testing method and system

The invention discloses a relational database testing method and system. The method comprises the steps of: setting types of a test point needing to be tested, wherein the types of the test point comprise generality, specification, compatibility and framework, expandability, manageability, security, usability, reliability, cluster redundancy function and usability; and respectively testing the types of the test point, recording testing results of testing the types of the test point. According to the scheme of the invention, functions and performances of a relational database can be completely tested, and functions and performances of relational databases in different manufacturers are conveniently compared, and the types of the relational database are conveniently selected.

Simplified version single line drawing generation method and system

The invention provides a simplified version single line drawing generation method and a simplified version single line drawing generation system. The simplified version single line drawing generation method includes steps: obtaining a device set of target feeder lines and connection relation data among devices; dividing the devices in the device set into an indoor device set, an electricity room set, an outdoor point device set and an outdoor line device set; performing a hierarchical structure layout on a transformer station, an electricity room and the outdoor point devices according to the connection relation data among the devices; arranging incoming line connection nodes and outgoing line connection nodes of the electricity room according to numbers of incoming switches and outgoing switches, and obtaining a corresponding relationship among the incoming line connection nodes, the outgoing line connection nodes and the indoor devices by binding the incoming line connection nodes, the ...

Data communication method and device based on network isolating device

The invention discloses a data communication method and device based on a network isolating device. The method comprises the following steps: an inner end host establishing internal network connection with an internal network terminal; an outer end host establishing external network connection with an external network terminal according to a first data packet received from the inner end host; the inner end host receiving an internal network data packet sent by the internal network terminal through the internal network connection and packaging the internal network data packet to generate a second data packet to send to the outer end host; the outer end host packaging internal network load data in the second data packet and then performing address conversion so as to orderly generate a first internal network data packet, a second internal network data packet and a linkage data packet, and then the outer end host sending the internal network linkage data packet to the corresponding external ...

Measuring system of mixed frame size forwarding performance of network equipment and test method thereof

Energy consumption optimization method for air conditioning system

The invention discloses an energy consumption optimization method for an air conditioning system. The method comprises the steps that S1, a temperature and humidity independent air conditioner-adsorption type refrigerator energy system model is established; s2, regularly collecting monitoring data; s3, establishing a corresponding relation between the equipment state and the equipment power; s4, calculating a comfort index of the user from multiple dimensions according to the collected monitoring data; step S5, constructing an energy consumption optimization problem model with minimization of the electric charge and the total comfort index as an optimization target; s6, converting the energy consumption optimization problem into a multi-agent reinforcement learning problem, and performing dual deep reinforcement learning solution; and S7, solving an energy consumption optimization strategy. According to the method provided by the invention, from the perspective of multi-dimensional comfort ...

Active power distribution network operating method based on electricity cost differentiation

The invention relates to an active power distribution network operating method based on electricity cost differentiation. According to the method, source and load coordinated operation control is conducted by means of a real-time electricity price and electricity cost differentiation electricity supply agreement, and a power distribution network has the flexible control ability of adjusting or interrupting loads of users who sign the differentiation electricity supply agreement by means of the differentiation electricity supply agreement which is characterized in different electricity cost levels and capable of achieving adjustment and interruption of loads. On this basis, dynamic adjustment of the load of the power distribution network can be achieved by means of electricity price with the real-time electricity pricing method based on expected load rate roll correction, and meanwhile, methods for prevention and control over the load rate based on adjustable loads and for correction control ...

Multimedia training examining system of digitalized transformer substation

The invention discloses a multimedia training examining system of a digitalized transformer substation, which comprises a WEB server, a database server, a local area network and at least one client terminal, wherein the client terminal is connected with the WEB server, the WEB server is connected with the database server, the client terminal is used for receiving information of the database server through the WEB server and the local area network, each client terminal comprises a mobile management terminal and a mobile training terminal, and the database server comprises a resource management module, an examination management module, a system management module and a rights management module. In the multimedia training examining system, a knowledge management based implementation mode is established according to the service professional characteristic of the digitalized transformation substation and the requirement of the digitalized transformation substation on the education training, a ...

Monitoring system and monitoring method for transformer substation communication power supply management modules

A monitoring system for transformer substation communication power supply management modules comprises a Guangdong power grid video and environment monitoring platform (7), a communication protocol module (6), a virtual device module and an environment parameter device management module (5) which are connected in sequence, wherein the virtual device module comprises a virtual remote signaling device module and a virtual telemetering device module, the environment parameter device management module (5) is respectively and externally connected with a communication power supply management module (1) meeting specification TD/T13633-200, a communication power supply management module (2) meeting specification DL451-91, a communication power supply management module (3) meeting specification DL/T634.5104-2002 and other monitoring modules (4). Different communication power supply management modules are abstracted through unified interfaces, and unified monitoring is achieved. Under the abnormal ...

Intelligent feeder line automation method in autonomous self-healing distribution network

The invention relates to an intelligent feeder line automation method in an autonomous self-healing distribution network, comprising the following steps that the topological structure chart of the distribution network is stored to each intelligent terminal, and the intelligent terminals generate a self-healing strategy base according to the topological chart; a protector carries out wireless communication with the intelligent terminals, and the intelligent terminals also carry out the wireless communication with each other; the protector and the intelligent terminals judge the fault to be a temporary fault or a permanent fault according to a fault signal obtained by communication, if the fault is the temporary fault, the protector closes a transformer substation outlet switch, and if the fault is the permanent fault, the protector recloses the transformer substation outlet switch twice, and the intelligent terminals select a self-healing strategy from the self-healing strategy base to carry ...

Substation three-dimensional live-action monitoring stationing method based on nonlinear parameter optimization calibration

The invention discloses a substation three-dimensional live-action monitoring stationing method based on nonlinear parameter optimization calibration. The method comprises the steps that a three-dimensional substation physical model is imported; an area coverage to be monitored is acquired based on the model, and the type and the physical parameters of a camera are determined; a position hypothesis test based on the area to be monitored is carried out: three monitor points are selected on the boundary of the area to be monitored, and the coordinates of the points are calculated; based on the relationship between a model coordinate system and a camera coordinate system, the physical position and the orientation of the camera in a three-dimensional space are derived; hypothesis verification based on camera object positioning is carried out: based on a perspective projection principle, the relationship between the imaging picture of camera motion trajectory and a covered three-dimensional ...

Monitoring system and method of load balance

The invention discloses a monitoring system and method of load balance. The method is applied to a grid monitoring system including a provincial master station monitoring system, a regional master station monitoring system, an end station monitoring system, two backbone networks, a plurality of servers, a server load comparing module and a network switch, wherein the two backbone networks are used for connecting the provincial master station monitoring system and the regional master station monitoring system as well as the regional master station monitoring system and the end station monitoring system; each server is connected with the two backbone networks and used for processing monitoring information interaction and storage of the monitoring system; the server load comparing module is arranged in the servers for comparing the load conditions of the servers; and the network switch is used for connecting the two backbone networks. The invention can not only realize the load balance of ...

Tester for testing measurement accuracy of PMU (Pressure Measuring Unit) and testing method thereof

The invention provides a tester for testing measurement accuracy of a PMU (Pressure Measuring Unit). The tester comprises a processor module, a D/A (Digital/Analog) conversion module, an electronic switch module, a power amplifier module and a decoder module. A B code time tick outputs a clock synchronization signal to the processor module through the decoder module; the processor module outputs a D/A control signal to control the D/A conversion module to output a direct voltage signal and an alternating voltage signal; the processor module outputs a switch control signal to control the electronic switch module to be switched on or off; the direct voltage signal outputs an analog key phase pulse signal through the electronic switch module; the power amplifier module comprises a driving power amplifier and a switching power amplifier; the alternating voltage signal is amplified through the driving power amplifier to output an analog machine end voltage signal; the analog machine end voltage ...

IPSec VPN safety forwarding method and system for handling power protocols

The invention provides an IPSec VPN safety forwarding method and system for handling power protocols. When an IP data packet enters an IPSec VPN device, a safety policy according with the IP data packet is sought for in a safety policy database according to IP message grouping information, data decryption is performed on the IP message grouping information according to the SP, and an original data message is obtained; then, power protocol characteristic value information identification is performed on the original data message according to characteristic value information in the SP to judge whether the current IP data packet message needs to be forwarded or not. Through the SP subjected to power protocol characteristic identification, fine grit inspecting and matching can be performed on the IP data packet bearing power service, in-tunnel attack to the data packet can be prevented, and thus the problems that because a large number of firewall policies are added into the IPSec VPN device ...

Transformer substation information protection sub-station simulation modeling method

A transformer substation information protection sub-station simulation modeling method includes network domain modeling, node domain modeling and process domain modeling. According to network domain modeling, a relay protection information system is built through an information transmission device of a main station, information transmission devices of sub-stations and information transmission devices between the main station and the sub-station. A transformer substation information protection sub-station model accords with the 103 communication protocol and is in communication with an intelligent electronic device, normal operation, abnormity warning and fault information of the intelligent electronic device are collected, the normal operation, abnormity warning and fault information is uploaded to the information protection main station at a scheduling end after primary processing, and interactive communication between the intelligent electronic device and the main station is achieved.

Power grid regulation and control method and system based on sensitivities of multiple links of power grid

The invention discloses a power grid regulation and control method and system based on sensitivities of multiple links of a power grid. The power grid regulation and control method based on the sensitivities of the multiple links of the power grid comprises the steps that the sensitivity of the reliability index of a load node in the power transmission link to the change of component reliability parameters in the power transmission link is obtained, and the first sensitivity is generated; the sensitivity of the reliability index in the power distribution link to the change of the reliability index of the load node is obtained, and the second sensibility is obtained; based on the load-power supply reliability equivalence principle, the third sensitivity of the reliability index in the power distribution link to the change of the component reliability parameters in the power transmission link is obtained according to the product of the first sensitivity and the second sensitivity; a power ...

System and method for data verification based on GTechnology platform

The invention provides a system and a method for data verification based on a GTechnology platform. The system comprises a data access layer, a service logic layer and a user interface layer. The method includes that the system collects data from the GTechnology platform through a data access component to acquire to-be-verified data; a data verification module verifies the acquired data, acquires rule verification functions defined by various data through XML (extensible markup language) file analysis and executes the rule verification functions to complete data verification, wherein data against rules are record and stored in a problem list; based on the acquired problem list, a data processing module verifies the data according to data type, data values within a definition domain, null values and redundant data and coverts and cleans valid data. By the system and the method, junk data and redundant data can be processed effectively, and accordingly, data records in a database are ensured ...

An SoC cryptographic chip

The invention discloses an SoC cryptographic chip. The SoC cryptographic chip comprises a CPU core, an interface, a nonvolatile memory, an on-chip memory, a timer, a power consumption management module, a clock reset module, a communication bus, a random number generator, and an encryption-decryption module, wherein, the random number generator is configured to generate a random number, and the encryption-decryption module is configured to execute, according to the random number generated by the random number generator, encryption-decryption operation on target data received by the SoC cryptographic chip. According to the SoC cryptographic chip provided by the invention, security of data is ensured from a bottom layer, which not only meets requirements of high performance, high integration, and miniaturization, but also has a function of security protection for data transmission, thus improving security of an industrial control system.

Demand side response control method based on temperature control load electric water heater and system thereof

The invention provides a demand side response control method based on a temperature control load electric water heater and a system thereof. Electric water heater equipment is molded to form an electric water heater polymerization load demand model; a water use amount of the electric water heater is considered, and an upper temperature limit, a lower temperature limit and a switch state of the electric water heater are reasonably controlled, so that a dynamic process and electric energy consumption of the electric water heater can be changed; various relevant factors such as an electric water heater parameter, an external factor and a communication process which affect response of the electric water heater are calculated so as to form a control framework for controlling the electric water heater, so that the electric water heater can effectively participate in a DR (data recorder); therefore, service is provided for a power grid, the application reliability of the electric water heater ...

Method for detecting digitized transformer station model

The invention discloses a method for detecting a digitized transformer station model. In recent years, IEC61850 and digitized transformer stations are developed quickly; however, great difference exists due to different producers and different device models, which brings great difficulties and hidden troubles to debugging and running; therefore, a detection means and a method which are simple, practical, effective and comprehensive are needed. In accordance with an IEC61850 standard, the method for detecting the digitized transformer station model supports a standardized detection aiming at the domestic 'Engineering Implementation Technical Specifications of IEC61850 International Standard', and is widely applied to the model detection of digitalized and conventional IEC61850 transformer station comprehensive automatic systems, wherein the method comprises the following steps of: detecting whether an XML format is right and performing Schema verification; detecting basic unit data, namely ...

Remote support system, remote access system, remote assistance system and remote assistance method

The invention relates to a remote support system. The remote support system comprises an operation host, a remote assistance server, a storage server, a first interchanger and a first encryption authentication gateway. The operation host, the remote assistance server and the storage server are each connected with the first interchanger and are connected with the first encryption authentication gateway. The first encryption authentication gateway is connected with a remote access system through a private wire network. The remote access system comprises a field controlled host, a second interchanger, and a second encryption authentication gateway. The field controlled host is connected with the second interchanger and is connected with the second encryption authentication gateway. The field controlled host is connected with the private wire network through the second encryption authentication gateway so as to be connected with a remote assistance system. The two systems provide safe remote ...

Transformer substation secondary device parameter configuration method and system

The invention provides a transformer substation secondary device parameter configuration method and system. On any transformer substation secondary device, according to the operating parameter requirement of the secondary device, a secondary device operating parameter configuration model is directly built, a structured operating parameter model file is generated, a binary system operating parameter file is further generated, then the binary system operating parameter file is downloaded into other secondary devices in a file transmitting mode, and configuration parameters of the other secondary devices are remotely controlled to take effects. Generation of the binary system operating parameter file of any secondary device can be completed through the adoption of a secondary device operating parameter model management tool and a secondary device operating parameter configuration tool which are arranged on the secondary device in advance, the binary system operating parameter file is downloaded ...

Electrical load dispatching control method and system thereof

The invention provides an electric load dispatching control method and an electric load dispatching control system. The electric load dispatching control method comprises the following steps of: classifying and aggregating a large number of controllable loads to build an energy efficiency generator, further constructing an energy efficiency power plant model, introducing the energy efficiency power plant model into an active/reactive power spare capacity calculation model of an electricity market, establishing an electric system active/reactive power spare capacity calculation model including the energy efficiency power plant, adopting an interior point method to solve the model, and calculating the active/reactive power spare capacity of each energy efficiency power plant, substituting the calculated active/reactive power spare capacity of each energy efficiency power plant into a corresponding energy efficiency generator active/reactive power spare capacity apportion optimization model ...

Method and system for centralized management of power grid data

The invention relates to a method and a system for centralized management of power grid data. The method comprises the following steps of obtaining the information of feeder lines of main distribution networks of a plurality of areas, respectively comparing and correlating to obtain power grid model data, storing into a corresponding area database server, and enabling the information of same equipment in different management systems to be consistent, so as to facilitate the subsequent splicing of the power grid data; after the power grid data of the areas are obtained, storing the power grid data and the power grid model data into a splicing database server for uniform storage; according to the power grid model data stored in the splicing database server, splicing the power grid data, so as to obtain a power grid data link which crosses multiple areas. Compared with the traditional power grid data management method, the method has the advantage that the power grid data of the areas are ...

Device for analyzing network communication record of digital transformer substation

The invention discloses a device for analyzing the network communication record of a digital transformer substation, which conforms to IEC61850 communication standard and provides service for the fault analysis, the engineering debugging and the relevant technology learning of the digital transformer substation. The device for analyzing the network communication record comprises at least one recording instrument and at least one analyzing instrument, wherein the recording instrument is used for on-line monitoring and recording communication between running entities (a monitoring device, a motion device, a protection/measurement and control device, an intelligent terminal, a combination unit and the like) in the transformer substation, carrying out on-line fault analysis and prediction, storing communication message periodicity as a file and generating briefing information for recording the file; the analyzing instrument provides various kinds of analysis, such as a communication process ...

Measuring system of mixed frame size forwarding performance of network equipment and test method thereof

The invention discloses a measuring system of the mixed frame size forwarding performance of network equipment and a test method thereof. The measuring system comprises a measuring module, a surface chart drawing module, a storage module, an analysis module, an evaluation module and a display module; based on the definition that the forwarding performance of the network equipment comprises two indexes of throughput and back to back, a mixed frame size scheme is introduced to the test on the forwarding performance of the network equipment; the measuring module realizes measurement on the forwarding performance of the equipment under different frame size distributions through adjusting the proportion of data frames with different frame sizes in a data stream; the surface chart drawing module draws a surface chart according to the measuring result; the analysis module calculates and analyzes the measuring result; the evaluation module calculates the credibility of the measuring result; and ...

Voltage reactive real-time control system of regional power grid and enclosed loop control method thereof

The invention discloses a voltage reactive real-time control system of a regional power grid and a control method thereof. The system comprises an SCADA (supervisory control ad data acquisition) system, an EMS (enhanced massage service) system, a power grid simulation system and a power grid test system, wherein the SCADA system is connected with a power system; the EMS system is connected with the SCADA system; the power grid simulation system is connected with the SCADA system, and is used for finishing the simulation of voltage reactive real-time control of the power system; and the power grid test system is respectively connected with the power grid simulation system, the EMS system and the SCADA system, and is used for finishing the reactive control optimal scheme of the power system. According to the invention, nonlinearity complex behavior of the simulation power system from the aspect of full grid is performed, the generation of the final control scheme is finished by a test system ...

Communication control method between region-level master station and remote system

The invention discloses a communication control method between a region-level master station and a remote system. The method is applied to a power grid monitoring system, which includes a region-level master station and a remote system connected with an IP (international protocol) communication network, wherein the region-level master station includes a master station server; and the remote system includes a remote system processing unit and a front end monitoring apparatus. The remote system processing unit acquires the configuration information from the front end monitoring apparatus, and uploads the configuration information to the master station server; and the master station server acquires the IP address of the remote system processing unit and the configuration information of the front end monitoring apparatus to construct a corresponding control interface, and communicates with the remote system processing unit to achieve control of the front end monitoring apparatus in the remote ...

Planning method for active power distribution network comprising distributed photovoltaic grid-connected network

The invention relates to a planning method for an active power distribution network comprising a distributed photovoltaic grid-connected network. The active power distribution network comprises the distributed photovoltaic grid-connected network. The planning method comprises the following steps: investigating and analyzing a planning area; determining a load peak under a photovoltaic peak clipping effect; determining an infrastructure planning result of the active power distribution network; determining a network frame structure extended by the active power distribution network; determining an optimal active control strategy of the active power distribution network; determining an optimal planning scheme. Aiming at the characteristic of the planning area, the distributed photovoltaic and active control strategies are introduced into a planning system of the power distribution network at a given photovoltaic penetration rate, so that the station establishment capacity and the network loss ...

Time sequence database testing method and system

The invention provides a time sequence database testing method and system. The method comprises the following steps: setting test point types to be tested, wherein the test point types comprise a function index, an advanced function index, a performance index and availability; and testing the test point types respectively, and recording the test results of testing on each test point type. According to the scheme of the invention, the functions and performance of the time sequence database can be comprehensively tested, and the functions and performances of time sequence databases of different manufacturers can be compared conveniently, and the model selection of the time sequence database is facilitated.