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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 20. Отображено 20.
15-03-2017 дата публикации

Ability wear compensation's a positive and negative chuck of changing a job

Номер: CN0206010807U
Автор: GUO XIANGFU, ZHU ZHUSHENG, WANG LISONG, HE GUOJUAN, HONG HUAWEN, YIN YONGFU, XU YONG
Принадлежит: YUNNAN COSIS MACHINE TOOL CO LTD, YUNNAN COSIS MACHINE TOOL CO., LTD.

The utility model provides an ability wear compensation's a positive and negative chuck of changing a job comprises fixed portion, internal rotation subtotal external rotation part, fixed portion includes top (13), be fixed in dead core (12) on top, the internal rotation part is the eccentric circle cambered surface including well cover (4) and three eccentric clamp splice (6), eccentric clamp splice towards taper hole of spindle's face, and U type mouth has been seted up to eccentric clamp splice outer fringe, outward turning part is connected through selling (7) directly to households with eccentric clamp splice including overcoat (2), protecgulum (1) and back lid (15), overcoat, sells the front end directly to households and clamps in eccentric clamp splice U type mouth, and the central borehole jack of rear end cap is on dead core and be connected with the overcoat rear end face, and the front end housing is connected with the preceding terminal surface of overcoat, is equipped with ...

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Номер записи: 1
28-04-2023 дата публикации

Ground disaster alarm monitoring system

Номер: CN116030601A
Автор: QIN JIANYU, CHEN LINHUA, LI GE, LIU BAOHUA, GUO XIANGFU
Принадлежит:

The invention discloses a ground disaster alarm monitoring system, and relates to the technical field of ground disaster monitoring, the ground disaster alarm monitoring system comprises a plurality of coordinate acquisition units, a control unit, an alarm unit and a service platform, the control unit regularly acquires coordinate values acquired by the coordinate acquisition units, and synchronizes the coordinate values to the service platform; the service platform carries out early warning analysis; the system further comprises a displacement monitor, and when the displacement monitor monitors that the displacement change between the two monitoring points exceeds the expectation, the alarm unit is notified to give an alarm. And the alarm unit sends a control request to the service platform while giving an alarm so as to trigger the service platform to re-judge the displacement change condition according to the received coordinate value and control the alarm unit based on the change condition ...

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Номер записи: 2
02-06-1999 дата публикации

Foil style hollow inductive coil

Номер: CN0001218267A
Автор: TAN GUIXIN, GUO XIANGFU, GUIXIN TAN, XIANGFU GUO
Принадлежит:

A foil-type hollow reaction coil is made up by continuously winding metal foil. Several ventilation bars are supported between adjacent turns of foil to form a ventilation channel. An insulating beltable to be solidified is wound around the coil to form an external layer. The current packs are arranged at its start and end points in diagonal line mode. Its end frames are fixed to both ends wherethere are hollow anticorona devices. Its advantages are light weight, simple technology and low cost.

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Номер записи: 3
04-07-2023 дата публикации

Distributed photovoltaic distribution network-containing reactive power optimization method and system based on multi-objective optimization

Номер: CN116388262A
Автор: GENG JUNCHENG, LAN GUANGYU, WANG ZHENG, GUO XIANGFU, XING ZIYA, NIU YU, YUAN SHAOGUANG, ZHOU XINGHUA, LIU HAO, ZHAO JIAN
Принадлежит:

The invention discloses a reactive power optimization method and system for a distributed photovoltaic power distribution network based on multi-objective optimization, and the method comprises the steps: constructing a photovoltaic power generation output probability model based on Beta distribution, and constructing a user load probability model based on Gaussian distribution; respectively generating photovoltaic power generation time sequence data and load time sequence data by applying a Monte Carlo method; taking the minimum accumulated active power loss at 24 moments as a first objective function, taking the minimum average voltage deviation of all nodes as a second objective function, and taking the minimum voltage regulation operation times of the on-load voltage regulation transformer and the minimum switching times of the capacitor as a third objective function to form a reactive power multi-objective optimization model of the power distribution network; constructing a combined ...

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Номер записи: 4
01-08-2023 дата публикации

Method for predicting power failure of power distribution network at extreme high temperature based on neural network

Номер: CN116520078A
Автор: YAO DEGUI, SONG WEI, KOU XIAOSHI, WANG JINYU, WANG CHAO, GUO JIANLI, LIU SHANFENG, LI ZHE, LU MING, GUO XIANGFU, LIANG YUN
Принадлежит:

The invention relates to the technical field of power distribution network disaster prediction, and discloses a power distribution network power failure prediction method based on a neural network at an extreme high temperature, and the method comprises the following steps: collecting a fault set of power failure faults of a power distribution network at the extreme high temperature; establishing a fault sample library A under the historical extreme high temperature of the power distribution network; establishing a non-fault sample library B under the historical extreme high temperature of the power distribution network; the fault sample library A and the non-fault sample library B are integrated together to form a training sample library X; based on the training sample library X, predicting the power failure probability and the power failure duration of the power distribution network at the extreme high temperature by adopting a long-short-term memory neural network, and establishing a ...

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Номер записи: 5
18-07-2023 дата публикации

High-integration main shaft system for machine tool

Номер: CN116441575A
Автор: SHI QINGHUA, GUO XIANGFU, LUO QINGFENG, SU MIN, YANG FU, SAI YUNXIANG, ZHANG JIANBING, ZHANG YOUYU
Принадлежит:

The invention discloses a high-integration main shaft system for a machine tool. The high-integration main shaft system comprises a main shaft with a hollow cavity, a pull rod in the hollow cavity and an elastic reset piece arranged on the pull rod in a sleeving mode. The main shaft is rotationally arranged in the main shaft sleeve; a cylinder body of the automatic tool loosening and pulling mechanism is slidably arranged outside a spindle and connected to the rear end of a spindle sleeve, a cylinder cover is fixed to the other end of the cylinder body, a piston is slidably arranged in the cylinder body, a kidney-shaped hole extending in the axial direction is formed in the spindle, a push pin is arranged between an elastic reset piece and the piston, the bottom end of the push pin is fixed to a pull rod, and the top end of the push pin penetrates through the kidney-shaped hole and extends outwards. The automatic tool loosening and pulling mechanism is arranged between the spindles, the ...

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Номер записи: 6
09-06-2023 дата публикации

Power distribution network strong wind disaster power failure forecasting method based on numerical simulation and SVD (Singular Value Decomposition) model

Номер: CN116244964A
Автор: ZHOU NING, LIU SHANFENG, WANG JINYU, LI ZHE, GENG JINFENG, LU MING, GUO JIANLI, LIANG YUN, GUO XIANGFU, WANG CHAO, MA JIANWEI, HE XIANG
Принадлежит:

The invention relates to a power distribution network strong wind disaster power failure forecasting method based on numerical simulation and an SVD model, and the method comprises the following steps: matching ontology parameters, meteorological parameters and operation state parameters when a power failure occurs under a strong wind disaster condition, and power failure probability and duration data after the power failure occurs; establishing a power distribution network historical meteorological parameter sample library A and a power distribution network gale fault sample library B; based on the sample library, an SVD method is adopted to construct an SVD model of the influence of the strong wind disaster on the power failure fault of the power distribution network; performing numerical simulation by adopting a regional numerical mode and combining an initial boundary field provided by global weather forecast data to obtain a weather parameter forecast value of the target region; and ...

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Номер записи: 7
13-06-2023 дата публикации

Composite fault recovery method and system of power distribution Internet of Things, terminal and storage medium

Номер: CN116260133A
Автор: GUO ZHIMIN, GUO XIANGFU, PENG LEI, LIU HAO, ZHI HAIYAN, MAO WANDENG, TIAN YANGYANG, YUAN SHAOGUANG, LIU SHANFENG, YANG TING, ZHAO JIAN, LI ZHE, MA JIANWEI, WANG LEI, LIU YACHUANG, ZHANG ZHENG, ZHANG XIAOFEI, ZHANG JIANBIN
Принадлежит:

The invention discloses a power distribution Internet of Things composite fault recovery method and system, a terminal and a storage medium. The method comprises the following steps: decoupling a communication information subsystem and an electric power physical subsystem of the power distribution Internet of Things, detecting the state of the power distribution Internet of Things in real time, judging whether a fault occurs, and if the fault occurs, inputting the fault state of the power distribution Internet of Things; when a fault occurs and a fault state is input, establishing a service flow model of a source node, a relay node and a host node according to a normal service flow transmission condition; after the business flow model is established, solving the shortest path for recovering the key information node by using a Dijkstra algorithm, thereby recovering the normal operation of the key information node as soon as possible; and according to a multi-target problem brought by the ...

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Номер записи: 8
25-08-2023 дата публикации

Defect identification method for transient recording type fault indicator

Номер: CN116643122A
Автор: HU YURONG, LIU HAO, GUO XIANGFU, HE XIANG, ZHANG KAI, GUO JIANLI, PENG LEI, LI ZHE, MA JIANWEI, ZHAO JIAN, WEI XIAOZHAO, GUO ZHIMIN, TIAN YANGYANG, XI SHENGZHE, GENG JUNCHENG, MAO WANDENG, CHEN CEN, LI NUANNUAN
Принадлежит:

The invention provides a defect identification method for a transient recording type fault indicator, and belongs to the field of power equipment. Comprising the steps of obtaining a master station fault recording file; judging whether an equipment offline condition exists or not according to the number of the fault recording files; judging whether an off-line condition of the acquisition unit exists or not according to the integrity of the fault recording file data; obtaining an ith extreme value time point t1 and an (i + 1) th extreme value time point t4 of an A phase in the fault recording file, an extreme value time point t2 of a B phase between t1-t4, and t3 of an extreme value time point of a C phase; according to the t1, the t2 and the t3, whether the fault indicator is installed in a reverse direction or in a phase dislocation mode or not is judged; fault waveforms of the ABC three-phase voltages in all the fault recording files at the fault moment are obtained; and determining ...

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Номер записи: 9
21-04-2023 дата публикации

Casting polishing machine tool

Номер: CN115990805A
Автор: ZHU ZHUSHENG, WANG CHAO, GUO XIANGFU, YANG FU, ZHANG JIANBING, LUO QINGFENG, XU YONG, XU MIN, LI XIAOMIN, LI SHUOBIN, FAN XINGRONG
Принадлежит:

A vertical bridge is vertically arranged at one end of a horizontal lathe bed, a sliding seat is connected to the vertical bridge in a sliding mode, the sliding seat is driven by a first driving mechanism and connected with a ram, the ram is connected with a second driving mechanism, and the second driving mechanism is connected with a main shaft seat and drives the main shaft seat to rotate on the horizontal plane relative to the ram. The spindle seat is connected with a third driving mechanism, the third driving mechanism is connected with a spindle head and drives the spindle head to rotate on the vertical plane relative to the spindle seat, a frameless motor is installed in the spindle head, and meanwhile the two ends of the spindle head are connected with polishing tools; the two workbenches are both connected to the horizontal lathe bed in a sliding mode, each workbench is connected with a fourth driving mechanism, and meanwhile the moving directions of the two workbenches are both ...

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Номер записи: 10
30-06-2023 дата публикации

Active power distribution network reliability evaluation method considering multi-device aging effect

Номер: CN116365515A
Автор: LI FENGJUN, WANG QIAN, SUN QIAN, XU MINGMING, FENG GUANG, XU HENGBO, LI WEIZHAN, HUANG WEI, TANG JIYUAN, YAN ZHICHAO, WANG PENG, GUO JIANLI, PENG LEI, GUO XIANGFU, ZHANG JINSHUAI, ZHANG JIANBIN
Принадлежит:

The invention belongs to the technical field of power distribution network reliability evaluation methods, and particularly relates to an active power distribution network reliability evaluation method considering a multi-equipment aging effect. The method comprises the following steps: constructing an active power distribution network reliability evaluation framework; analyzing fault factors of the information system to obtain a failure mode statistical table; mathematical models involved in reliability evaluation are described, wherein the mathematical models comprise an equipment aging model and a corresponding reliability evaluation model constructed for fault modes of an information system and a physical system based on a failure mode and effect analysis method; carrying out scene reduction by taking constraint conditions after formation of an island and charge and discharge of energy storage into consideration, adopting a typical scene clustering method and utilizing a K-means clustering ...

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Номер записи: 11
05-05-2023 дата публикации

Off-line overhead line single-phase earth fault positioning method based on alternating current signal injection

Номер: CN116068337A
Автор: DONG XUAN, ZHANG JINSHUAI, XU MINGMING, WANG JUNJIE, XIE RUIRUI, XUE YONGDUAN, GUO JIANLI, PENG LEI, GUO XIANGFU, SHAND, FENG GUANG, WANG PENG, ZHANG JIANBIN, CHEN MING
Принадлежит:

An off-line type overhead line single-phase earth fault positioning method based on alternating current signal injection comprises the steps that after a single-phase earth fault occurs, a fault line is isolated, and alternating current voltage signals are injected into a three-phase line at the same time through a signal generating device; judging a fault branch according to the zero-sequence admittance angle difference of different branches at the branch point, and determining a fault direction by using the zero-sequence admittance angle difference of different detection points of the fault branch; according to the method, the fault offline positioning method based on the amplitude difference of the signals on the two sides of the fault point is improved, and the zero-sequence admittance angle information of the upstream and downstream of the fault point is comprehensively utilized as a new single-phase earth fault positioning thought; the problems that a circuit capacitance shunting ...

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Номер записи: 12
15-03-2017 дата публикации

Lathe lead screw seat mounting structure

Номер: CN0206010778U
Автор: GUO XIANGFU, HONG HUAWEN, YIN YONGFU, WANG LISONG, HE GUOJUAN, XU YONG, ZHU ZHUSHENG
Принадлежит: YUNNAN COSIS MACHINE TOOL CO LTD, YUNNAN COSIS MACHINE TOOL CO., LTD.

The utility model provides a lead screw (3) that lathe lead screw seat mounting structure, including installing in mount pad (1) and a position that axle sleeve (2), from the mount pad before terminal surface align reaming to axle sleeve (2) and mount pad (1) both sides fitting surface middle section horizontal circular cone pinhole, install in downthehole taper bolt (4) of taper bolt, the central line of circular cone pinhole is transversely through axle sleeve (2) the fitting surface with mount pad (1), through taper bolt (4) locking axle sleeve (2) and mount pad (1). The utility model discloses lathe lead screw installation needs can be be applicable to well, production efficiency improved, reduction in production cost.

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Номер записи: 13
25-07-2023 дата публикации

Method and system for detecting influence of distributed photovoltaic on transformer area line loss rate

Номер: CN116485013A
Автор: LIU FANG, GENG JUNCHENG, GUO XIANGFU, XING ZIYA, YUAN SHAOGUANG, ZHOU XINGHUA, NIU YU, LIU HAO
Принадлежит:

The invention discloses a method and a system for detecting the influence of distributed photovoltaic on the line loss rate of a transformer area, and the method is characterized in that the method comprises the following steps: 1, collecting a load curve of a power user in the transformer area, and carrying out the analysis of the load curve through employing a clustering algorithm, so as to achieve the primary classification of the transformer area; step 2, performing equal-frequency division on the transformer areas based on the number of the distributed photovoltaic access points in each transformer area so as to obtain secondary transformer area classification; step 3, based on the primary transformer area classification and the secondary transformer area classification, constructing an association relationship between transformer area line loss rates of all transformer areas under one transformer area classification and a photovoltaic electric quantity ratio, and searching a line ...

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Номер записи: 14
02-05-2023 дата публикации

Instrument height measuring device of surveying and mapping equipment

Номер: CN116045934A
Автор: LI GE, LIU BAOHUA, QIN JIANYU, GUO XIANGFU, ZHUANG YU
Принадлежит:

The invention relates to the technical field of surveying and mapping equipment, and discloses a surveying and mapping equipment instrument height measuring device which is arranged between a surveying and mapping equipment body and a tripod and comprises a shell, a winding piece and a measuring rope, a cavity is formed in the shell, a rope penetrating hole is formed in the bottom of the shell, the rope penetrating hole is located in the center of the shell, and the measuring rope is arranged in the cavity. The rope penetrating hole is communicated with the cavity; a cavity is formed in the shell, the winding piece is arranged in the cavity and rotationally connected with the shell, one end of the measuring rope is fixedly connected with the winding piece and partially wound on the winding piece, the other end of the measuring rope penetrates out of the rope penetrating hole, and scales are marked on the surface of the measuring rope. According to the invention, the process of measuring ...

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Номер записи: 15
18-07-2023 дата публикации

Power distribution network reliability evaluation method based on cross entropy important sampling

Номер: CN116452041A
Автор: WANG QIAN, PENG LEI, LI FENGJUN, XU MINGMING, SUN QIAN, FENG GUANG, GUO XIANGFU, TANG JIYUAN, HUANG WEI, LI WEIZHAN, YAN ZHICHAO, NIU RONGZE, DONG XUAN, CHEN MING, SHANG BOWEN, XIE RUIRUI
Принадлежит:

The invention discloses a power distribution network reliability evaluation method based on cross entropy important sampling, and the method is characterized in that the evaluation method comprises the following steps: S1, considering the influence of an operation condition on the unavailability of a power transmission line; s2, considering the influence of the aging effect on the unavailability of the power transmission line; s3, combining the operation conditions and the aging effect, and establishing a power transmission line unavailability model; s4, establishing a power distribution network reliability index analysis model; s5, solving the coefficient of the power distribution network reliability index analysis model established in the step S4; s6, considering the influence of new energy output and load uncertainty, obtaining a power distribution network reliability index analysis model coefficient through BP neural network training, and calculating a power distribution network reliability ...

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Номер записи: 16
29-08-2023 дата публикации

Random forest-based fault risk grade prediction method for power distribution network at continuous high temperature

Номер: CN116663393A
Автор: YAO DEGUI, SONG WEI, KOU XIAOSHI, LI ZHE, GUO JIANLI, LU MING, WANG CHAO, WANG JINYU, GUO XIANGFU, MA JIANWEI
Принадлежит:

The invention discloses a random forest-based power distribution network fault risk grade prediction method under a continuous high temperature, and the method comprises the following steps: obtaining ontology parameters, operation state parameters and refined meteorological related data when a fault occurs according to a historical fault sample library of a power distribution network during a continuous high temperature period; wherein the meteorological data mainly comprises continuous high temperature time, an extreme value, daily average temperature, relative humidity and the like, different fault risk levels are divided based on the continuous time of the power distribution network fault, and meteorological related data and power distribution network operation state parameters corresponding to the different fault levels are distinguished to obtain corresponding training samples; and establishing a prediction model about the fault level of the power distribution network based on a random ...

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Номер записи: 17
28-04-2023 дата публикации

Multi-state distributed passive sensing monitoring method, device and equipment for power distribution cable network

Номер: CN116027146A
Автор: NIU RONGZE, ZHANG KAI, XU MINGMING, FENG GUANG, GUO JIANLI, GUO XIANGFU, PENG LEI, LI FENGJUN, XU HENGBO, LI ZONGFENG, WANG PENG, ZHANG JIANBIN, CHEN MING, DONG XUAN, LI YINGJIE, QIN FUXIANG, HUANG QINGJIANG, YUAN LULU, XIE RUIRUI, BAI YINHAO, ZHANG JINSHUAI, SHANG BOWEN
Принадлежит:

The invention belongs to the technical field of distribution cable network state sensing, and particularly relates to a distribution cable network multi-state distributed passive sensing monitoring method, device and equipment. The method comprises the following steps: deploying a compact distributed passive sensing device related to a distribution cable line according to a distributed application scheme; the method comprises the following steps: reasonably deploying compact passive distributed sensing devices according to a differentiation scene of a distribution cable non-directly-buried channel, and monitoring channel risks; a sensing front-end device is integrated, a power supply module is charged, and low power consumption is set, so that the sensing device is ensured to reliably operate for a long time in a severe operating environment of a distribution cable; differentiated installation and operation and maintenance schemes are adopted for different application scenes, and active ...

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Номер записи: 18
14-07-2023 дата публикации

Low-voltage transformer area three-phase imbalance treatment method and system based on multi-objective optimization

Номер: CN116436044A
Автор: JIA XIULIANG, GENG JUNCHENG, LAN GUANGYU, GUO XIANGFU, WANG ZHENG, NIU YU, YUAN SHAOGUANG, LIU HAO, ZHAO JIAN, ZHOU XINGHUA
Принадлежит:

The invention discloses a low-voltage transformer area three-phase imbalance treatment method and system based on multi-objective optimization, and the method comprises the following steps: 1, obtaining the phase sequence data of a transformer in a user connection transformer area and the rated current data of the transformer in the transformer area, and obtaining the current sequence data of the user based on an electricity information collection system; step 2, calculating the weighted average three-phase unbalance degree of the transformer area based on the load rate and the average three-phase unbalance degree; 3, taking the transformer area user phase sequence combination scheme as a control variable, and solving a Pareto optimal solution set of the transformer area user phase sequence combination scheme by adopting an intensity Pareto evolutionary algorithm; and 4, selecting a final transformer area user phase sequence combination scheme in the Pareto optimal solution set of the transformer ...

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Номер записи: 19
21-07-2023 дата публикации

Model for power failure caused by power distribution network fault under extreme rainfall, construction method and use method thereof, computer readable medium and electronic equipment

Номер: CN116467951A
Автор: YAO DEGUI, SONG WEI, ZHOU NING, WANG CHAO, WANG JINYU, GUO JIANLI, LIU SHANFENG, LI ZHE, LU MING, GUO XIANGFU, LIANG YUN
Принадлежит:

The invention relates to a power distribution network fault-caused power failure model under extreme rainfall, a construction method and a use method thereof, a computer readable medium and electronic equipment, the power distribution network fault-caused power failure model under extreme rainfall is a random forest model, and the input of the random forest model comprises power distribution network body parameters, rainfall parameters and power distribution network operation state parameters. The output of the random forest model comprises the power distribution network fault-caused power failure possibility classification result and the power failure duration caused by the power distribution network fault. By using the method, prediction of power failure caused by power distribution network faults under extreme rainfall can be realized.

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Номер записи: 20