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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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Применить Всего найдено 35. Отображено 35.
18-06-2014 дата публикации

Network type protection method based on closed-loop mode operation of power network

Номер: CN103872660A
Автор: YUAN QINCHENG, LI CHUNGUANG, YUAN QIHONG, WANG JUANJUAN, DONG LIANG, DONG XUZHU, HUANG XIAOYUN, YU LI, PENG FEIJIN, HUANG HONGYUAN
Принадлежит:

A network type protection method based on closed-loop mode operation of a power network is used for a power network system which operates in a closed-loop mode. The power network system comprises multiple transformer stations and terminal units connected to the transformer stations, and is characterized in that each terminal unit comprises an intelligent controller, a breaker and a communication module, the communication module in each terminal unit is only communicated with the closest terminal unit, and the intelligent controller in each terminal unit collects the information of voltage, current, power direction, associative direction and state and the after-fault information of the breakers in the terminal unit and the adjacent terminal unit. According to the method, a peer-to-peer communication network is adopted, the terminal units on a circuit are communicated with one another, fault information of adjacent switches is collected, arbitrating is performed, and rapid positioning and ...

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Номер записи: 1
14-04-2023 дата публикации

Power distribution fault self-recovery method of flexible interconnection switch and related device

Номер: CN115967088A
Автор: SONG ANQI, JIANG WEI, LI XIN, FAN XINMING, LIU CHENG, LI GUOWEI, DONG DI, XIONG SHIBIN, WANG JUNBO, TANG QI, ZHANG YIN, LIU SHAOHUI, LUO RONGBO, LI XIANG, PENG FEIJIN, OUYANG WEINIAN
Принадлежит:

The invention discloses a power distribution fault self-healing method of a flexible interconnection switch and a related device, when an AC feeder connected with the flexible interconnection switch has a fault, after fault positioning and fault isolation, a fault port fault self-healing control strategy of the flexible interconnection switch is provided, normal power supply of the feeder connected with the fault port is recovered, and the fault port fault self-healing control strategy of the flexible interconnection switch is recovered. And through power flow transfer and control, joint coordination between a non-fault port and a fault port network is realized, that is, residual capacity of feeder lines of other ports is utilized to realize power supply recovery for a load carried by a fault feeder line.

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Номер записи: 2
09-09-2015 дата публикации

Power grid unloading method and system thereof

Номер: CN104901315A
Автор: HUANG XIAOYUN, PENG FEIJIN, LI XIANG, CAO ZHIHUI, CHE LEI, CHEN JINRONG, HUANG HONGYUAN, DENG ZHIGUANG, TAN ZHENPENG, CHEN YUFANG, GUO WEIBIN, LIN LETONG
Принадлежит:

The invention relates to a power grid unloading method which comprises the steps of acquiring an AVC operation; recording changing data of load and voltage of a bus node before and after the AVC operation; acquiring a relationship between the load and the voltage through the changing data of the load and the voltage; calculating the unloading capability of the power grid according to the relationship between the load and the voltage; and performing voltage reduction on the power grid for realizing unloading in the unloading capability of the power grid. According to the power grid unloading method, a transformer station and a more particular node load characteristic are deeply analyzed. Based on consideration for the voltage characteristic of the power grid load, when an unloading measure is required for the power grid, the load value of the full grid is reduced in short time through an adjusting instruction for voltage reduction, thereby saving time for subsequent processing on one hand ...

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Номер записи: 3
18-06-2014 дата публикации

Network type protection method for hybrid networking based on closed-loop model operation

Номер: CN103872662A
Автор: YUAN QINCHENG, YUAN QIHONG, LI CHUNGUANG, WANG JUANJUAN, DONG LIANG, DONG XUZHU, HUANG XIAOYUN, YU LI, PENG FEIJIN, HUANG HONGYUAN
Принадлежит:

A network type protection method for hybrid networking based closed-loop model operation is used in a circuit breaker and load switch hybrid networking system operated in a closed-loop mode. The networking system comprises multiple substations and terminal units connected with the substations. The networking system is characterized in that each terminal unit comprises an intelligent controller and a communication module, each intelligent controller controls the corresponding circuit breaker and the corresponding load switch, each terminal unit only communicates with the adjacent terminal unit, the intelligent controller in each terminal unit collects fault current, fault current direction, fault current relation direction, state and after-fault information of the circuit breakers and the load switches of the terminal unit and the adjacent terminal unit. The peer-to-peer communication network is adopted by the method, the terminal units on a circuit are communicated with one another, the ...

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Номер записи: 4
12-02-2014 дата публикации

Intelligent power distribution network closed-loop self-healing control method

Номер: CN103580286A
Автор: ZHANG ZHUO, GE LIANG, HUANG XIAOYUN, KANG TAIFENG, ZHAO FENGQING, HUANG HONGYUAN, PENG FEIJIN, TAN ZHIHAI, HUANG SONGBO, HUANG ZHIYONG
Принадлежит:

The invention provides an intelligent power distribution network closed-loop self-healing control method for solving the problems that in the intelligent power distribution network self-healing control process, a self-healing scheme and an actual control mode are detached, the automation level is low, and the situation that the usability and the accuracy of the self-healing scheme are affected due to remote control failure may occur. According to the technical scheme, when a power distribution network breaks down, a self-healing recovery scheme and a remote control operation sequence are obtained, and after the self-healing recovery scheme and the remote control operation sequence are determined by a dispatcher, an automatic power distribution system performs automatic remote control operation sequentially and automatically. If one remote control failure occurs, an automatic mode is converted into a manual execution mode, a standby application scheme is generated automatically, the dispatcher ...

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Номер записи: 5
26-05-2023 дата публикации

Distribution network line automation benefit evaluation method and related device

Номер: CN116167893A
Автор: ZHU YANTING, OUYANG WEINIAN, LI GAOMING, ZHANG WENJUN, ZENG XIAODAN, YUE CHAOHUI, CHEN JINRONG, LI XIANG, PENG FEIJIN, GUO WEIBIN, CHE LEI, TAN ZHENPENG
Принадлежит:

The invention discloses a distribution network line automatic benefit evaluation method and a related device. The method comprises the steps of obtaining fault data and operation data of a distribution network line in a to-be-evaluated time period and taking the fault data and the operation data as an evaluation data set; calculating the fault processing benefit of distribution network automation according to the number of normal power supply users and the total number of line users in the evaluation data set; calculating the running operation benefit of the distribution network automation according to the remote control operation success times and the line operation times in the evaluation data set; and combining the fault processing benefit and the operation benefit to determine the distribution network automation benefit. Compared with a conventional method for evaluating the automation benefit of the distribution network through the power failure time, the method is more objective, ...

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Номер записи: 6
10-12-2014 дата публикации

Droop-inverse droop type microgrip inverter power source with hysteretic characteristics

Номер: CN104201718A
Автор: HUANG XIAOYUN, LEI JINYONG, HUANG HONGYUAN, GUO XIAOBIN, PENG FEIJIN, XU AIDONG, LI XIANG, SHEN ZHAN
Принадлежит:

The invention discloses a droop-inverse droop type microgrip inverter power source with hysteretic characteristics. The droop-inverse droop type microgrip inverter power source with the hysteretic characteristics comprises a distributed primary energy source, a detection module, a control module, a drive module and an inverter convertor bridge; the detection module comprises a sampling unit and an input signal processing unit; the control module is capable of generating a control signal acting on the drive module by comparing system active and reactive power information transmitted by the detection module with the predetermined power limit value of the power source; the control method of the control module is in a droop-inverse droop pattern, and the control module is provided with four thresholds; the drive module comprises a PWM generation circuit and a driving amplifying circuit; the inverter convertor bridge is used for connecting the distributed primary energy source and a microgrid ...

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Номер записи: 7
21-01-2015 дата публикации

State variable sensitivity calculation method applicable to radial distribution network reconfiguration

Номер: CN104300540A
Автор: TIAN BING, XU AIDONG, GUO XIAOBIN, DONG XUZHU, LEI JINYONG, YU LI, WU ZHENGRONG, WANG JIANBANG, WEI WENXIAO, HUANG WEI, PENG FEIJIN
Принадлежит:

The invention discloses a state variable sensitivity calculation method applicable to radial distribution network reconfiguration. The method comprises the steps of effective on-off operation definition of radial distribution network reconfiguration, partition of reconfigured active networks and reconfigured passive networks, active network state variable sensitivity calculation, passive network state variable sensitivity calculation and network function estimation. According to the state variable sensitivity calculation method, node voltage and load flow distribution formed after network reconfiguration can be accurately estimated, the distribution network is divided into a plurality of subnetworks not influencing one another, and the dimensionality of a single network state equation is effectively reduced, so that calculation precision is ensured, and meanwhile the calculation amount is greatly reduced. The state variable sensitivity calculation method can be used for distribution network ...

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Номер записи: 8
08-08-2023 дата публикации

Distribution network line fault transfer capacity calculation method and system

Номер: CN116565855A
Автор: ZHU YANTING, LI GAOMING, OUYANG WEINIAN, ZHANG WENJUN, WU SHUHONG, ZENG XIAODAN, YUE CHAOHUI, CHEN JINRONG, LI XIANG, PENG FEIJIN
Принадлежит:

The invention relates to the technical field of line fault maintenance, and discloses a distribution network line fault transfer capacity calculation method and a distribution network line fault transfer capacity calculation system. Judging whether the line section capable of being transferred is a heavy-load line section or not according to a load redundancy value between any two towers in the line section capable of being transferred, recording the heavy-load line section as a line section capable of being transferred, and calculating the proportion of the user load number of all the line sections capable of being transferred to the user load number of all the line sections. According to the method, the distribution network line fault transfer capacity is calculated, the corresponding proportions of the fault points in all the line sections are calculated, the maximum proportion is determined, and the transfer capacity value of the feeder line is determined according to the maximum proportion ...

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Номер записи: 9
18-06-2014 дата публикации

Network type protection method based on open-loop mode operation of power network

Номер: CN103872661A
Автор: YUAN QINCHENG, YUAN QIHONG, LI CHUNGUANG, WANG JUANJUAN, DONG LIANG, DONG XUZHU, HUANG XIAOYUN, YU LI, PENG FEIJIN, HUANG HONGYUAN
Принадлежит:

The invention relates to a network type protection method based on open-loop mode operation of a power network. A power network system comprises multiple transformer stations and terminal units connected to the transformer stations, wherein each terminal unit comprises an intelligent controller, a breaker and a communication module, the communication module in each terminal unit is only communicated with the closest terminal unit, the intelligent controller in each terminal unit collects the information of voltage and flowing current of the breaker of the terminal unit, the information of flowing current of the breaker in the adjacent terminal unit, and fault information, and in case of normal or abnormal communication, the intelligent controller in each terminal unit is communicated with the adjacent terminal unit when detecting fault current. According to the method, a peer-to-peer communication network is adopted, the terminal units on a circuit are communicated with one another, fault ...

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Номер записи: 10
26-11-2014 дата публикации

Droop-PQ type micro-grid inverter power supply with hysteretic characteristics

Номер: CN104167764A
Автор: HUANG XIAOYUN, SHEN ZHAN, HUANG HONGYUAN, LEI JINYONG, PENG FEIJIN, GUO XIAOBIN, LI XIANG, XU AIDONG
Принадлежит:

The invention discloses a droop-PQ type micro-grid inverter power supply with hysteretic characteristics. The droop-PQ type micro-grid inverter power supply comprises distributed primary energy, a detection module, a control module, a driver module and an inverter convertor bridge. The detection module comprises a sampling unit and an input signal processing unit; the control module is used for generating control signals acting on the driver module in the mode that information of active power and reactive power, sent by the detection module, of a system is compared with a power limit value preset for the power supply; a control method of the control module involves droop-PQ control, and the control module has four threshold values; the driver module comprises a PWM generating circuit and a drive amplifying circuit; the inverter convertor bridge is used for connection and electric energy conversion between the distributed primary energy and a micro-grid. The droop-PQ type micro-grid inverter ...

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Номер записи: 11
28-05-2014 дата публикации

Power distribution network accident process retrieval method by using feeder line contact group as unit

Номер: CN103825273A
Автор: KANG TAIFENG, ZHAO FENGQING, ZHENG JIANPING, HUANG XIAOYUN, GE LIANG, HUANG HONGYUAN, TAN ZHIHAI, PENG FEIJIN, HUANG ZHIYONG, HUANG SONGBO
Принадлежит:

The invention discloses a power distribution network accident process retrieval method by using a feeder line contact group as a unit. The process comprises the following steps: reading a history power distribution network model of a failure feeder line contact group in failure data, loading measured data at beginning moment of the retrieval to form a retrieval state real-time database section using the feeder line contact as the unit; reading history and dynamic data of accident process in the failure data; sorting alarm events and accident treating process events in the accident process in sequence to form the accident overall process event list; loading a failure information review, and initializing a first pointer and a second pointer to respectively point to a to-be-retrieved event and a to-be-retrieved event stage; and carrying out retrieval by selecting at least one of orderly retrieval, single-step retrieval and retrieval according to event process to finish the retrieval. Therefore ...

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Номер записи: 12
12-05-2023 дата публикации

Distribution network automation switch position distribution generation method and device and storage medium

Номер: CN116109108A
Автор: ZHU YANTING, OUYANG WEINIAN, LI GAOMING, ZHANG WENJUN, ZENG XIAODAN, YUE CHAOHUI, CHEN JINRONG, LI XIANG, PENG FEIJIN, GUO WEIBIN, CHE LEI, TAN ZHENPENG
Принадлежит:

The invention relates to the technical field of electric power, and discloses a distribution network automation switch position distribution generation method and device and a storage medium. According to the invention, a scheme that each section switch is configured at each target tower on a main line under the existing condition is enumerated; calculating a user load loss expected value of each target segment under each scheme based on the fault probability, the load and the number of middle and low voltage users among the target towers on the main line; calculating the variance of a target sample formed by the user load loss expected values of the corresponding target segments under each scheme, and selecting the scheme with the minimum variance from the schemes meeting a preset expected value condition as an optimal scheme; and if no scheme meets the preset expected value condition, determining an optimal scheme by adding a branch switch in a branch line and adding a distribution network ...

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Номер записи: 13
25-07-2023 дата публикации

Distributed photovoltaic access capacity analysis method, system and equipment

Номер: CN116488247A
Автор: OUYANG WEINIAN, TANG ZHIRUI, LI XIANG, KUANG ZIJIA, PENG FEIJIN, HE XIQI, PENG ZHIHUA, ZHU YANTING, ZHANG WENJUN, LI GAOMING, TAN ZHENPENG, FAN XINMING, HUANG HONGYUAN, LU YING, LIAO FENG, WU LIXIAN
Принадлежит:

The invention discloses a distributed photovoltaic access capacity analysis method, system and equipment, and the method comprises the steps: employing the installed photovoltaic total installed capacity, a preset installed capacity threshold value, an operation limit value, a photovoltaic power generation electrical load and a preset equipment operation margin coefficient corresponding to all installed photovoltaic projects; determining a newly added distributed photovoltaic active power output value of power grid equipment corresponding to the power grid equipment information; carrying out heavy load judgment on a distribution transformer or a single-circuit line or a main network transformer corresponding to the newly added distributed photovoltaic active output value in a preset application scene according to distributed photovoltaic access limiting conditions of each voltage level, and generating a judgment result; and determining the installable distributed photovoltaic capacity corresponding ...

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Номер записи: 14
05-02-2014 дата публикации

Smart distribution grid semi-closed loop self-healing control method

Номер: CN103560495A
Автор: KANG TAIFENG, GE LIANG, HUANG XIAOYUN, ZHAO FENGQING, HUANG HONGYUAN, PENG FEIJIN, TAN ZHIHAI, HUANG ZHIYONG, ZHOU QIANGFU, LIN JUN
Принадлежит:

The invention provides a smart distribution grid semi-closed loop self-healing control method aiming at the actual situation that an original self-healing scheme can not continue to be carried out probably because of remote control failure in the actual operation according to an operation sequence obtained through the self-healing scheme when a smart distribution grid carries out self-healing control. According to the technical scheme, when the smart distribution grid breaks down, the remote control operation sequence of the self-healing recovery scheme is obtained, and each step of remote control operation is carried out after being determined errorless by a dispatcher; once remote control failure happens, a standby self-healing scheme and a standby operation sequence are generated, and distribution grid self-healing is achieved according to the standby operation sequence; finally, it is ensured that the distribution grid operates in the optimum mode after seal-healing through distribution ...

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Номер записи: 15
14-04-2023 дата публикации

Distribution network automation terminal relay protection value setting method and system

Номер: CN115967071A
Автор: ZHU YANTING, LU YING, LI GAOMING, OUYANG WEINIAN, ZHANG WENJUN, YUE CHAOHUI, ZENG XIAODAN, CHEN JINRONG, LI XIANG, CHE LEI, PENG FEIJIN, TAN ZHENPENG, GUO WEIBIN
Принадлежит:

The invention relates to the technical field of relay protection setting, and discloses a distribution network automation terminal relay protection setting value setting method and system, and the method comprises the steps: selecting an interconnection switch in a power distribution network, obtaining all distribution network automation switches with three-remote functions between a 10kV feeder line outgoing switch and the interconnection switch, and carrying out the combination, a plurality of grading switch preselection schemes are formed, the user load number of each grading switch preselection scheme and the variance of the user load number are subjected to weighted calculation, and the grading switch preselection scheme with the minimum weighted value is selected from weighted results to serve as a grading switch setting scheme; the overcurrent protection constant value time of each step switch is obtained according to the preset overcurrent protection time margin and the number of ...

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Номер записи: 16
06-08-2014 дата публикации

Online risk monitoring system of feeder lines of power distribution network and monitoring method thereof

Номер: CN103971182A
Автор: WANG FENG, FU YINGJIE, CAO YIJIA, CHEN CHUN, LIU BEI, DONG XUZHU, HUANG XIAOYUN, XU AIDONG, YU LI, LEI JINYONG, PENG FEIJIN
Принадлежит:

The invention provides an online risk monitoring system of feeder lines of a power distribution network and a monitoring method thereof. The monitoring method comprises the following steps: acquiring real-time data of the feeder lines of the power distribution network; carrying out analysis and calculation according to the real-time data, thereby obtaining a risk value of the feeder lines of the power distribution network; and comparing the risk value of the feeder lines of the power distribution network with a risk reference value of the feeder lines to judge the level of risk of the feeder lines, wherein if the risk value is more than the reference value, the feeder lines have risks, and the larger the difference value is, the larger the risks are, and if the risk value is less than the reference value, the feeder lines are safe. Compared with the prior art, the online risk monitoring system and method provided by the invention have the advantages that on the basis of real-time operation ...

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Номер записи: 17
10-12-2014 дата публикации

System and method for controlling dynamic stability of DC bus voltage based on dual-PWM energy accumulating current transformer

Номер: CN104201698A
Автор: HUANG XIAOYUN, GUO XIAOBIN, HUANG HONGYUAN, XU AIDONG, PENG FEIJIN, SHEN ZHAN, LI XIANG, LEI JINYONG
Принадлежит:

The invention provides a method for controlling dynamic stability of a DC bus voltage based on a dual-PWM energy accumulating current transformer. The method comprises the steps of comparing an absolute power difference value with a power threshold to output an absolute difference value, dividing the absolute difference value by a network voltage amplitude to obtain a direct-axis current variable quantity, multiplying the direct-axis current variable quantity by a proportionality coefficient to obtain a proportional direct-axis current variable quantity, superposing the proportional direct-axis current variable quantity and an expected direct-axis current value to output a superposed direct-axis current value, dividing an expected reactive power value by the network voltage amplitude to obtain an expected quadrature-axis current value, performing superposing, proportional regulation and integral regulation on the superposed direct-axis current value and the expected quadrature-axis current ...

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Номер записи: 18
11-08-2023 дата публикации

Distribution network line fault self-recovery method and system

Номер: CN116581749A
Автор: ZHU YANTING, OUYANG WEINIAN, LI GAOMING, ZHANG WENJUN, ZENG XIAODAN, YUE CHAOHUI, CHEN JINRONG, LI XIANG, PENG FEIJIN, CHE LEI, GUO WEIBIN, TAN ZHENPENG
Принадлежит:

The invention relates to the technical field of line fault self-healing, and discloses a distribution network line fault self-healing method and system, and the method comprises the steps: designing a distribution network line, configuring the line load distribution of each line segment of a feeder line, and configuring the fixed values of overcurrent and zero-sequence protection actions corresponding to a hierarchical distribution network automation switch and an interconnection switch, the distribution network automatic switch is used for positioning the range of a fault point sending a line fault signal, isolating a fault line section, and switching power supply for a non-fault line section according to line load rate conditions on two sides of the distribution network automatic switch and the interconnection switch so as to realize self-healing of a fault line. Therefore, the load rate of the line and the transfer capacity of the surrounding lines are comprehensively considered, the ...

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Номер записи: 19
30-07-2014 дата публикации

Movable mould test method for self-healing control function of power distribution network

Номер: CN103955200A
Автор: HUANG HONGYUAN, CAO ZHIHUI, PENG FEIJIN, HUANG XIAOYUN
Принадлежит:

The invention provides a movable mould test method for a self-healing control function of a power distribution network. The method comprises the following steps: setting a state sequence on a relay tester, and determining a fault strategy; triggering the fault strategy according to set time through GPS signals by use of a movable mould tester, the movable mould tester being connected with the terminal row of an intelligent control terminal of the power distribution network for simulating a primary switch device; obtaining remote signaling information returned by the movable mould tester; starting the self-healing control of the power distribution network, controlling the corresponding switch of the power distribution network to isolate a fault within a minimum scope, and restoring power supply to other areas whose power is cut off due to the fault reason; and according to the remote signaling information and the remote measuring information of all switches in a fault area, determining a ...

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Номер записи: 20
25-06-2014 дата публикации

Hybrid networking network type protection method based on open-loop mode operation

Номер: CN103887780A
Автор: HUANG XIAOYUN, YUAN QINCHENG, LI CHUNGUANG, YUAN QIHONG, WANG JUANJUAN, DONG LIANG, DONG XUZHU, YU LI, PENG FEIJIN, HUANG HONGYUAN
Принадлежит:

The invention discloses a hybrid networking network type protection method based on open-loop mode operation, which is used for a hybrid networking system of circuit breakers and load switches, and the system is operated in an open-loop mode. The networking system comprises a plurality of transformer substations and terminal units which are connected to the transformer substations, and is characterized in that each terminal unit comprises an intelligent controller and a communication module; each intelligent controller controls the circuit breaker or the load switch; the communication module in each terminal unit only communicates with the adjacent terminal unit; the intelligent controller in each terminal unit collects the voltage and the current of the circuit breaker or the load switch in the terminal unit and the current and fault information of the load switch or the circuit breaker in the adjacent terminal unit. The invention adopts the peer-to-peer communication network, enables ...

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Номер записи: 21
25-06-2014 дата публикации

Modeling method of low-voltage distribution network with distributed power supply

Номер: CN103887792A
Автор: SUN QIUPENG, ZHENG JIANPING, HUANG XIAOYUN, GE LIANG, HUANG HONGYUAN, ZHAO FENGQING, PENG FEIJIN, TAN ZHIHAI, HUANG ZHIYONG, HUANG SONGBO
Принадлежит:

The invention relates to a modeling method of a low-voltage distribution network with a distributed power supply. The modeling method includes the steps that a distributed power supply model in a low-voltage distribution network model is established; a distribution transformer combination model in the low-voltage distribution network model is established; a low-voltage transformer substation model is established in the low-voltage distribution network model; topology association and measurement data points between the low-voltage distribution network model and a medium-voltage distribution network model are set; low-voltage distribution network measurement data are acquired and mapped into the established low-voltage distribution network model; the low-voltage distribution network model is checked through topology verification. Thus, while the influence on the functions of an existing power distribution automation system is minimum, the low-voltage power grid model with the distributed ...

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Номер записи: 22
01-08-2023 дата публикации

Method, system and equipment for identifying weak points of power distribution network line network frame and medium

Номер: CN116526461A
Автор: OUYANG WEINIAN, LI GAOMING, ZHU YANTING, PENG FEIJIN, ZHANG WENJUN, CHEN JINRONG, LI XIANG, HUANG XIAOYUN, TAN ZHENPENG, LIAO FENG, WU LIXIAN, ZHOU LONGZHOU, HE QIMIAO, HUANG HONGYUAN
Принадлежит:

The invention discloses a weak point identification method and system for a power distribution network line network frame, equipment and a medium, and the method comprises the steps: obtaining equipment connection data of a power distribution network, loading corresponding data page components through the equipment connection data, and carrying out the rendering of all data page components, thereby generating an equipment connection page; and updating an equipment connection page by adopting a plurality of target lines corresponding to the equipment connection data, and generating an initial line net rack weak point page. And updating the initial line net rack weak point page by adopting the initial load data and the maximum allowable current-carrying capacity corresponding to all the target lines, and generating a middle line net rack weak point page. And finally, performing forward and reverse current-carrying capacity judgment based on the middle line network frame weak point page and ...

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Номер записи: 23
28-09-2011 дата публикации

Regional remote spare power source automatic transfer test method and related equipment

Номер: CN0102200559A
Автор: HONGYUAN HUANG, LEI CHE, XIMING ZHANG, GAOMING LI, WEIBIN GUO, FEIJIN PENG, HUANG HONGYUAN, CHE LEI, ZHANG XIMING, LI GAOMING, GUO WEIBIN, PENG FEIJIN
Принадлежит:

The invention discloses a regional remote spare power source automatic transfer test method. The method comprises the following steps of: storing multiple fault strategies, action strategies when the fault strategies happen, control commands and the actual timing sequence and order of telemetering and telesignalling changes corresponding to remote control commands in advance, wherein the multiplefault strategies are formulated according to fault type and the actual timing sequence and order of telemetering and telesignalling changes of a regional spare power source automatic transfer stationstring; after the fault strategies are triggered, sending out control commands according to the fault strategies, simulating telemetering and telesignalling changes according to the control commands and feeding back first fault information; generating actual action strategies according to the first fault information and sending out actual remote control commands; simulating corresponding telemetering ...

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Номер записи: 24
10-12-2014 дата публикации

Energy storage converter based automatic micro-grid PCC (Point of Common Coupling) power tracking method

Номер: CN104201699A
Автор: HUANG XIAOYUN, XU AIDONG, HUANG HONGYUAN, SHEN ZHAN, PENG FEIJIN, LEI JINYONG, LI XIANG, GUO XIAOBIN
Принадлежит:

The invention discloses an energy storage converter based automatic micro-grid PCC (Point of Common Coupling) power tracking method. The energy storage converter based automatic micro-grid PCC power tracking method comprises regulating power positive directions of positions in a micro-grid system; establishing a power model according to power balance of a common point, wherein the power of the common point has a value range; starting an energy storage converter function for adjusting the micro-grid PCC power when the common point exceeds the value range; calculating the output power of the energy storage converter according to a balance formula; issuing an output result to a charge-discharge control system of an energy type system of the energy storage system after the output result is performed on low-pass filtering; issuing a result obtained by subtracting a low-pass filtering result from the output result to a charge-discharge control system of a power type system of the energy storage ...

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Номер записи: 25
23-06-2023 дата публикации

Power distribution network cable section fault risk evaluation method and device and storage medium

Номер: CN116307705A
Автор: ZHU YANTING, LI GAOMING, OUYANG WEINIAN, ZHANG WENJUN, YUE CHAOHUI, ZENG XIAODAN, CHEN JINRONG, LI XIANG, CHE LEI, PENG FEIJIN, TAN ZHENPENG, GUO WEIBIN
Принадлежит:

The invention relates to the technical field of power system risk analysis, and discloses a power distribution network cable section fault risk evaluation method and device and a storage medium. The method comprises the following steps: acquiring operation data of a target feeder since commissioning and fault influence data of a target line section of the target feeder, and calculating the fault probability of the target feeder according to the number of accumulated faults and the number of accumulated operation days in the operation data to obtain the overall fault probability of the target; calculating the fault probability of the corresponding target line segment according to the target overall fault probability to obtain a target segment fault probability; calculating a fault consequence influence value of the corresponding target line section according to the number of middle and low voltage users in the fault influence data and the last-year data values of all loads; and calculating ...

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Номер записи: 26
27-06-2023 дата публикации

Method and system for automatically searching fault self-healing power restoration path of power distribution network

Номер: CN116345419A
Автор: OUYANG WEINIAN, LI XIANG, LI GAOMING, PENG FEIJIN, CHEN JINRONG, ZHANG WENJUN, ZHU YANTING, TAN ZHENPENG, TANG ZHIRUI, HUANG HONGYUAN, WU SHUHONG, LIAO FENG, WU LIXIAN
Принадлежит:

The invention provides a power distribution network fault self-healing power restoration path automatic search method and system. The method comprises the steps of obtaining an equipment connection relation of a power distribution network; performing traversal search on the power distribution network line to obtain a trunk line path of the power distribution network line; identifying a transfer path based on the state information of the switches in the trunk path; and identifying a fault area of the power distribution network, performing remote control isolation on the fault area according to the transfer path, and performing transfer power recovery on a non-fault area. According to the power distribution network topology, the transfer path in the power distribution network is searched and identified in real time, the problems of misoperation and operation refusal caused by inconsistency between the actual power distribution network line and the self-healing model can be solved, automatic ...

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Номер записи: 27
24-12-2014 дата публикации

Fault section increment storage method for power distribution network

Номер: CN104242259A
Автор: KANG TAIFENG, ZHENG JIANPING, HUANG XIAOYUN, GE LIANG, HUANG HONGYUAN, ZHAO FENGQING, PENG FEIJIN, TAN ZHIHAI, HUANG ZHIYONG, HUANG SONGBO
Принадлежит:

The invention relates to a fault section increment storage method for a power distribution network. The fault section increment storage method is characterized by including the following steps: determining faults, wherein the power distribution network is monitored, it is determined that the faults needing to be stored occur, and the fault storage time is determined; carrying out fault processing and information recording, wherein self-healing processing is carried out on the faults in the determined storage time, and change conditions of fault section information are monitored and recorded till the storage time is over; carrying out fault section increment storage, wherein increment storage is carried out on the fault related information. Multiple fault storage mechanisms including analysis to relations between the faults, judgment on the relations between the faults and reappearing of influences between the faults are favorable for correctly and comprehensively analyzing the validity ...

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Номер записи: 28
11-08-2023 дата публикации

Method and system for suppressing modular multilevel converter in unbalanced power grid

Номер: CN116581790A
Автор: SONG ANQI, JIANG WEI, LI GUOWEI, LIU CHENG, FAN XINMING, LI XIN, DONG DI, CHEN XIANXI, LIU HAO, WU ZHUOJUN, LI XIANG, GUO WEIBIN, PENG FEIJIN, OUYANG WEINIAN
Принадлежит:

The invention discloses a suppression method and system for a modular multilevel converter in an unbalanced power grid, and the method comprises the steps: carrying out the positive and negative sequence component decomposition and phase locking of a three-phase voltage vector of a balanced feed line, and carrying out the balance control of the positive sequence current components of the balanced feed line and other feed lines; the negative-sequence current components of the balanced feeder line and other feeder lines are suppressed, the load active power of the DC side and the reactive power of the balanced feeder line are subjected to balance control, and the negative-sequence current components of the feeder lines connected with the multi-medium-voltage AC/DC port modular multilevel converter are suppressed; the active power of the multi-terminal interconnection module and the three-phase DC bus voltage energy of the multi-terminal interconnection module are subjected to balance control ...

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Номер записи: 29
09-04-2014 дата публикации

Power distribution system model simplification error control method oriented at transient state simulation

Номер: CN103714212A
Автор: WANG CHENGSHAN, YU HAO, LI PENG, DING CHENGDI, SONG GUANYU, DONG XUZHU, YU LI, HUANG HONGYUAN, PENG FEIJIN, HUANG XIAOYUN
Принадлежит:

A power distribution system model simplification error control method oriented at transient state simulation similarly represents simplification errors of a power distribution system model by utilizing the difference of a un-simplified model transfer function and a simplified model transfer function, and does not need to carry out actual simulation calculation on an initial high-dimension system model, thereby largely improving the error estimation efficiency. Based on the error estimation method, the simplification errors of simplified models of any dimension can be rapidly and effectively worked out, model iteration generation is carried out based on the errors, and then the simplified model meeting the requirement for simulation accuracy is automatically determined. In addition, the method is not related to the characteristics such as the structure and parameters of a power distribution system network to be simplified, has good simulation adaptability, and makes it possible that programming ...

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Номер записи: 30
06-08-2014 дата публикации

Power distribution network islanding method based on harmonic algorithm

Номер: CN103971299A
Автор: WANG FENG, ZENG YEYUN, CHEN CHUN, CAO YIJIA, HUANG CHUN, DONG XUZHU, HUANG XIAOYUN, XU AIDONG, YU LI, PENG FEIJIN, LEI JINYONG
Принадлежит:

The invention relates to a power distribution network islanding method based on a harmonic algorithm. Aiming for largest recovered load switching value and smallest motion switching value, and considering constraint conditions such as active power balance and non-overload of line current in an island, the power distribution network islanding method based on the harmonic algorithm provided by the invention carries out 0-1 encoding for each node in the power distribution network, obtains a specific islanding scheme in combination with a breadth-first search algorithm, calculates an objective function value of each island, adjusts, evaluates and updates the islanding scheme by utilizing the harmonic algorithm, then carries out trend inspection on the current optimal solution, and finally gives a better islanding scheme. The method for realizing full search of a solution space to solve the power distribution network islanding problem based on the harmonic algorithm provided by the invention ...

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Номер записи: 31
11-04-2023 дата публикации

Distribution network automation terminal remote control abnormity analysis method and related device

Номер: CN115955414A
Автор: ZHU YANTING, LI XIANG, CHEN JINRONG, LI GAOMING, OUYANG WEINIAN, ZHANG WENJUN, ZENG XIAODAN, YUE CHAOHUI, PENG FEIJIN, TAN ZHENPENG, GUO WEIBIN, CHE LEI
Принадлежит:

The invention discloses a distribution network automation terminal remote control abnormity analysis method and a related device. The method comprises the following steps: acquiring remote control operation data and communication message data of a distribution network automation switch in a to-be-analyzed time period, and taking the data as an analysis data set; respectively calculating a remote control abnormal rate, a communication abnormal rate, a preset abnormal rate, a protocol abnormal rate and a message abnormal rate of the distribution network automation switch based on the analysis data set; according to the remote control abnormal rate, the communication abnormal rate, the preset abnormal rate, the protocol abnormal rate and the message abnormal rate, calculating the remote control abnormal probability of the distribution network automation switch through an entropy method; judging whether any preset sudden abnormal condition of the distribution network automation switch occurs ...

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Номер записи: 32
06-08-2014 дата публикации

Online safety precaution and prevention control method of power distribution network

Номер: CN103972985A
Автор: WANG FENG, CHEN CHUN, CAO YIJIA, LIU BEI, DONG XUZHU, HUANG XIAOYUN, XU AIDONG, YU LI, LEI JINYONG, PENG FEIJIN
Принадлежит:

The invention relates to an online safety precaution and prevention control method of a power distribution network. The online safety precaution and prevention control method comprises the steps of perceiving the running state of the power distribution network, and acquiring data of the power distribution network; calculating a precaution index or a power-losing grade index of the power distribution network according to the acquired data of the power distribution network; dividing the running state of the power distribution network according to the precaution index or the power-losing grade index; and carrying out prevention control on the power distribution network in an alert state. Therefore, the power distribution network can autonomously carry out safety precaution and prevention control; self-healing control of the power distribution network is realized; meanwhile, faults of the power distribution network can be avoided as many as possible, and energy is saved in the running process ...

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Номер записи: 33
09-05-2023 дата публикации

Distribution network line interconnection switch distribution point selection method and device and storage medium

Номер: CN116093940A
Автор: ZHU YANTING, LI XIANG, CHEN JINRONG, LI GAOMING, OUYANG WEINIAN, ZHANG WENJUN, ZENG XIAODAN, YUE CHAOHUI, PENG FEIJIN, TAN ZHENPENG, GUO WEIBIN, CHE LEI
Принадлежит:

The invention relates to the technical field of power distribution network optimization, and discloses a distribution network line interconnection switch distribution point selection method and device and a storage medium. A target power supply scheme set is determined according to a trunk line set of a target substation; taking a tower and cable tapping point as a target endpoint, taking a line segment between two adjacent target endpoints as a corresponding target line segment, and calculating load redundant data corresponding to different schemes in the power supply scheme set to determine a distribution point selection range of the interconnection switch on the distribution network line; performing point distribution in the point distribution selection range according to the number of the target interconnection switches to obtain each alternative point distribution scheme; and calculating the line minimum redundancy of different feeder switch sides under each alternative point distribution ...

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Номер записи: 34
13-08-2014 дата публикации

Prevention, control and fault handling method and system for power distribution network

Номер: CN103986237A
Автор: WANG FENG, NIE MINGLIN, CAO YIJIA, CHEN CHUN, HUANG XIAOYUN, DONG XUZHU, XU AIDONG, YU LI, PENG FEIJIN, LEI JINYONG
Принадлежит:

The invention relates to a prevention, control and fault handling method and system for a power distribution network. The prevention, control and fault handling system for the power distribution network comprises a uniform-control platform, an information acquisition unit and a prevention and control unit, wherein one end of the uniform-control platform is connected with the information acquisition unit, the other end of the uniform-control platform is connected with the prevention and control unit, the prevention and control unit is used for predicting the abnormal operating state of devices in the power distribution network in a short period of time in future, and the prevention and control unit comprises a second index calculation module used for setting an index in advance according to the information of the devices in the power distribution network and the information of a network topology and storing the information of the topology so that data support can be provided for a fault ...

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Номер записи: 35