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WO2011037288A1 - Système coopératif de protection de distribution électrique et procédé d'exploitation associé - Google Patents

Système coopératif de protection de distribution électrique et procédé d'exploitation associé Download PDF

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Publication number
WO2011037288A1
WO2011037288A1 PCT/KR2009/005556 KR2009005556W WO2011037288A1 WO 2011037288 A1 WO2011037288 A1 WO 2011037288A1 KR 2009005556 W KR2009005556 W KR 2009005556W WO 2011037288 A1 WO2011037288 A1 WO 2011037288A1
Authority
WO
WIPO (PCT)
Prior art keywords
fault
phase
distribution
terminal device
failure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2009/005556
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English (en)
Korean (ko)
Inventor
권성철
추철민
김주용
송일근
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Korea Electric Power Corp
Original Assignee
Korea Electric Power Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Korea Electric Power Corp filed Critical Korea Electric Power Corp
Publication of WO2011037288A1 publication Critical patent/WO2011037288A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
    • H02H7/263—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of measured values
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
    • H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/38—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to both voltage and current; responsive to phase angle between voltage and current
    • H02H3/385—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to both voltage and current; responsive to phase angle between voltage and current using at least one homopolar quantity
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment

Definitions

  • the present invention relates to a distribution protection coordination system and its operation method. More specifically, when a ground fault occurs in an ungrounded distribution line, it determines whether there is a fault and a fault in the switch, and removes the fault using the corresponding fault information.
  • the present invention relates to a distribution protection coordination system and a method of operating the same, informing the operator of a failure by transmitting the corresponding failure information to the distribution control device.
  • the fault determination and removal of the ungrounded distribution line uses a method of determining a fault when the value exceeds a preset value by using the image current and the image voltage when a ground fault occurs.
  • this method can only determine the presence of a failure, there is a problem that can not determine the failure.
  • the present invention has been made to solve the above problems, to provide a power distribution protection coordination system and its operation method to accurately determine the failure section and fault when a ground fault occurs in the ungrounded distribution system.
  • the present invention provides a stable and effective protection coordination system by reducing the failure identification and failure removal time by effectively separating the failure interval through the protection coordination method of each opening and closing period based on the information on the failure interval and the fault phase It is to provide an operation method.
  • a power distribution protection coordination system is provided.
  • a failure when a ground fault occurs in an ungrounded distribution line, a failure occurs and a fault phase are determined using the phase difference between the image current and the phase voltage of the distribution line, and the failure occurs.
  • a terminal device for generating and transmitting fault recognition information including fault phase information, a switchgear for opening and closing the distribution line under control of the terminal device, and receiving the fault recognition information from the terminal device, and receiving at least one terminal device.
  • It may include a distribution protection cooperation system including a distribution control device for transmitting a control signal for blocking the failure section by operating the switch at the point of failure through cooperation.
  • a method of operating protection coordination in a distribution system provides an image of a ground fault occurring in an ungrounded distribution line. It may include a distribution protection cooperative operation method comprising the step of determining a fault phase by using the phase difference between the current and the phase voltage, and the fault blocking through the time cooperation of the switching period using the fault phase identification information.
  • FIG. 1 is a view for explaining the configuration of the power distribution protection cooperation system according to an embodiment of the present invention.
  • FIG. 2 is a view for explaining the flow of fault current when a ground fault occurs in an ungrounded distribution line.
  • FIG. 3 is a diagram for explaining phases of voltage and current in normal and ground fault in an ungrounded distribution line
  • FIG. 4 is a view for explaining a failure determination region of the phase angle of Io with respect to the phase-to-phase voltage for each ground fault.
  • FIG. 5 is a view for explaining a distribution protection cooperative operation method in a terminal device according to an embodiment of the present invention.
  • FIG. 1 is a view for explaining the configuration of the power distribution protection cooperation system according to an embodiment of the present invention.
  • the power distribution protection cooperative system includes a power distribution control device 100, a communication network 200, a terminal device 300, and an automated switch 400.
  • the distribution control apparatus 100 includes a distribution automation server 110 and a HMI (Human Machine Interface) device for operation and a front end processor (FEP) 130.
  • HMI Human Machine Interface
  • FEP front end processor
  • the distribution automation server 110 when a ground fault occurs in the ungrounded distribution line, receives the failure recognition information 420 including whether a failure occurs and a fault phase from the terminal device 300, and the terminal device 300. ) Interrupt the fault section by operating only the switch on the potential side at the point of fault occurrence.
  • the distribution automation server 110 receives the Fault Indicator (FI), which is information on the occurrence of the fault and the fault, when the fault phase is determined in the terminal device 300, and sets the cutoff time counter Td to 0. Shut off the fault section.
  • FI Fault Indicator
  • the distribution automation server 110 transmits a control signal for setting Td, which is a time difference with respect to the time until the switch 400 is opened to each terminal device 300 to block the fault current.
  • Td a control signal for setting Td
  • the setting of the Td_set of each terminal device 300 is set shorter as the load side.
  • the distribution system diagram 104 for the operating area is displayed.
  • the front end processor (FEP) 130 is connected to the automation switch 400, the substation CB (Circuit Breaker 310) and the automation terminal device (FRTU) 300 installed in the distribution line through a communication network.
  • FEP front end processor
  • the communication network 200 transmits a control command of the power distribution control device 100 to each terminal device 300 according to a communication method or transmits information obtained from the terminal device to the power distribution control device 100.
  • the communication network 200 may use various communication methods such as optical communication, telephone line, wireless communication, voice communication, and the like.
  • Terminal unit (FRTU, Feeder Remote Terminal Unit, 300) is installed in a set with the distribution automation switch 400 installed in the middle of the distribution line to measure the current and voltage flowing through the switch 400 or to change the input / open state Detect.
  • the terminal device 300 determines whether a fault occurs and a fault phase by using an image current and a phase voltage, and generates fault recognition information (FI).
  • FI fault recognition information
  • the terminal device 300 transmits the failure recognition information 420 to the distribution control apparatus 100 so that the same failure identification information 420 is displayed on the distribution control apparatus 100.
  • the terminal device 300 operates only the potential side switch 400 at the point of failure through the coordination between the terminal devices 300 of the switch 400 under the control of the distribution control device 100 to block the fault section. Ensure cooperation.
  • the switch 400 opens and closes the distribution line under the control of the terminal device 300 to block the failure section.
  • FIG. 2 is a view for explaining the flow of fault current when a ground fault occurs in an ungrounded distribution line.
  • FIG. 3 is a diagram for explaining phases of voltage and current in normal and ground fault in an ungrounded distribution line.
  • each phase voltage is balanced by forming a 120 ° phase difference.
  • phase A moves to the ground point in the case of complete phase A ground fault.
  • each phase and the phase current form a 90 ° phase angle.
  • I B and I C flow only the charging current due to the charging capacitance between each of the conductors and the ground, so that the direction of 3Io forms a phase difference of 180 ° with V BC as shown at 302.
  • 3Io has a phase difference of 180 ° with V CA
  • 3Io has a phase difference of 180 ° with V AB .
  • phase angle between 3Io and phase voltage in each fault is less than 180 ° and theoretically 90 ° ⁇ It has a range of 180 °.
  • FIG. 4 is a view for explaining a failure determination region of the phase angle of Io with respect to the interphase voltage for each ground fault.
  • the terminal device 300 has a phase A ground fault when Io is in the range of about 120 to 180 ° (theoretically, 90 ° to 180 °) with V BC which is an interphase voltage with respect to the ground fault of the distribution line. Determine by failure.
  • the terminal device 300 is Io is to determine the B-phase earth fault is in the phase-to-phase voltage, V CA with approximately 120 ⁇ 180 ° range (which is theoretically 90 ° ⁇ 180 °), the Io the phase to phase voltage V AB and If it is in the range of about 120 ⁇ 180 ° (in theory, it is 90 ° ⁇ 180 °), it is regarded as phase C ground fault.
  • the phase angle of Io is calculated counterclockwise based on the phase-to-phase voltage. In this way, it is possible to determine whether a fault occurs on the ground fault in the automated switch 400 and the terminal device 300 attached to the ungrounded distribution line and whether the fault occurs. ) Can be set.
  • the interruption time may be set to 1 second from the most end switch, and the interruption time may be increased by 1 second to the power supply side.
  • the fault is released before the interruption time set by the switch indicating the fault information, it is determined that the fault is removed from any switch on the load side and the fault is released.
  • FIG. 5 is a view for explaining a distribution protection cooperative operation method in a terminal device according to an embodiment of the present invention.
  • step S100 the terminal device 300 first calculates an image current value 3Io as a vector sum of currents measured by each switch 400.
  • step S200 the terminal device 300 calculates whether the image current value 3Io exceeds the preset image current setting value Ioset and determines whether there is a failure.
  • step S300 to step S302 the terminal device 300 determines that a failure has occurred when the image current value 3Io exceeds a preset image current set value Ioset, and when the failure is determined, the image current and the phase voltage Calculate the phase angle difference of.
  • step S310 to step S312 the terminal device 300 determines whether each phase calculated by calculating the phase difference between Io and each phase voltage is within a fault phase angle range.
  • the determined fault phase range may be changed depending on the system configuration, but set to about 120 ° ⁇ 180 °.
  • step S320 to step S322 the terminal device 300 determines the failure phase.
  • step S400 when the fault phase is determined, the terminal device 300 displays fault occurrence information about fault occurrence and fault information as FI (Fault Indication).
  • FI ault Indication
  • step S500 the terminal device 300 transmits the FI information to the power distribution control device 100 and sets the cutoff time counter Td to zero.
  • the terminal device 300 determines whether the cutoff time counter Td is greater than a preset Td_set.
  • the terminal device 300 is issued a control command to open the switch 400 to block the failure.
  • the predetermined Td_set is determined by the power distribution control device 100 that has received the FI information, and is received by each terminal device 100.
  • Td_set is set shorter as it goes to the load side from the power distribution station. For example, assuming that four switchboards are provided in an ungrounded distribution line, Td_set of the last terminal switch is set to 1 sec, and Td_set is set by adding 0.5 sec in the direction close to the power supply side. In other words, each switch is set to 1 sec, 1.5 sec, 2.0 sec, and 2.5 sec in order from the end side to the power side.
  • step S700 if the Td is not greater than the preset Td_set, the terminal device 300 recalculates the video current 3Io and if the Td is smaller than the video current set value Ioset, the fault is removed from the load side, so the FI is released and the power distribution control device Send to 100 and end the process.
  • the terminal device 300 recalculates the image current 3Io, and if it is not smaller than the set value Ioset, increases the Td and returns to the previous step S600.
  • the distribution protection coordination system and its operation method for ground faults in the ungrounded distribution line can be determined only by determining whether there is an existing failure in the domestic country or by finding a fault line in a foreign country and sequentially finding a fault section. Automatically identify the section and fault phase, and use it to divide the breaker break time of each distribution automation to separate the fault section through mutual cooperation, and through this, quick fault by fault discrimination and protection cooperation of ungrounded distribution line Eliminate stars and failures and achieve efficient track operation.
  • An embodiment of the present invention may include a computer readable medium including program instructions for performing various computer-implemented operations.
  • the computer readable medium may include a program command, a local data file, a local data structure, etc. alone or in combination.
  • the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts.
  • the present invention is to determine the exact fault phase for the ground fault, which is the most fault occurring in the distribution line, and through this time coordination of the automatic switchgear period in order to eliminate the fault through smooth operation cooperation by operating only the potential switch at the fault point Can operate.
  • the present invention can determine the exact fault phase for the non-grounded distribution system to provide accurate fault information to the operator, it is possible to shorten the line instantaneous time for checking the fault point and eliminate the fault.
  • the present invention can achieve an efficient distribution line operation by performing a failure blocking operation using the time coordination of the existing automated switching period by using the fact that the fault current in the ungrounded distribution line is small.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

L'invention concerne un système coopératif de protection de distribution électrique et un procédé d'exploitation associé, et, plus particulièrement, un système coopératif de protection de distribution électrique conçu pour déceler l'existence d'un défaut ou d'une phase défectueuse dans un commutateur à l'occasion d'un défaut à la terre dans une ligne de distribution électrique non mise à la terre, pour éliminer le défaut compte tenu d'informations pertinentes sur le défaut et pour transmettre les informations pertinentes sur l'existence d'un défaut à une unité centrale de commande de façon à notifier l'existence d'un défaut à un opérateur, ainsi qu'un procédé d'exploitation associé. Selon un mode de réalisation de l'invention, le système coopératif de protection de distribution électrique peut comprendre : une unité terminale conçue pour déceler l'existence d'un défaut ou d'une phase défectueuse compte tenu d'une différence de phase entre un courant image et une tension interphase de la ligne de distribution électrique à l'occasion d'un défaut à la terre dans une ligne de distribution électrique non mise à la terre puis pour générer et transmettre des informations de reconnaissance de défaut contenant des informations sur l'existence du défaut et de la phase défectueuse ; un commutateur conçu pour ouvrir et fermer la ligne de distribution électrique sous la commande de l'unité terminale ; et une unité de commande de distribution électrique conçue pour recevoir les informations de reconnaissance de défaut en provenance de l'unité terminale et pour transmettre à au moins une unité terminale un signal de commande destiné à actionner le commutateur en présence du défaut par coopération avec au moins une unité terminale dans le but de bloquer un tronçon défectueux.
PCT/KR2009/005556 2009-09-28 2009-09-29 Système coopératif de protection de distribution électrique et procédé d'exploitation associé Ceased WO2011037288A1 (fr)

Applications Claiming Priority (2)

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KR1020090091950A KR101090425B1 (ko) 2009-09-28 2009-09-28 배전 보호협조 시스템 및 운영방법
KR10-2009-0091950 2009-09-28

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CN104283320A (zh) * 2014-10-29 2015-01-14 国网四川省电力公司达州供电公司 一种针对电气保护压板的状态监测终端结构
CN110490105A (zh) * 2019-08-06 2019-11-22 南京大国科技有限公司 基于图像识别的配变台区验收方法、装置及计算机存储介质
CN112803598A (zh) * 2021-03-05 2021-05-14 中国电力科学研究院有限公司 配电网的多源协同保护配置方法、系统、设备和存储介质
CN113189859A (zh) * 2021-04-21 2021-07-30 黄山学院 一种配电环境监测及故障自主解除的设备及方法
CN114157021A (zh) * 2021-10-28 2022-03-08 国网江苏省电力有限公司 用于电网故障的多人协同处置系统及方法

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KR101383809B1 (ko) * 2012-01-27 2014-04-10 한전케이디엔주식회사 배전계통의 보호기기 감시 시스템 및 방법
KR101310803B1 (ko) * 2012-04-04 2013-09-25 한전케이디엔주식회사 배전지능화 단말장치와 개폐기간 직렬통신 연계 시스템 및 방법
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KR102174253B1 (ko) * 2019-05-02 2020-11-04 한전케이디엔주식회사 분산형 전원 보호 협조 장치 및 방법
KR102575836B1 (ko) 2020-07-31 2023-09-06 한전케이디엔주식회사 이더넷 환경에서 dds 통신을 이용한 배전 보호협조 시스템
KR102825420B1 (ko) 2021-09-28 2025-06-27 한국전력공사 비수지상 배전 계통의 고장 분리 방법 및 장치
KR102778608B1 (ko) 2023-11-30 2025-03-12 한국전력기술 주식회사 비접지 고압전력계통의 보호계전기의 성능평가 방법

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KR20050041625A (ko) * 2003-10-31 2005-05-04 한국전력공사 배전자동화기반의 비접지계 지락고장구간 검출방법
KR200344922Y1 (ko) * 2003-12-30 2004-03-19 한양전공주식회사 복합계전장치
KR100709980B1 (ko) * 2005-10-21 2007-04-20 명지대학교 산학협력단 비접지 배전계통에서 영상전류 위상차와 크기 비교에 의한고장구간 검출방법 및 시스템

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CN104283320A (zh) * 2014-10-29 2015-01-14 国网四川省电力公司达州供电公司 一种针对电气保护压板的状态监测终端结构
CN110490105A (zh) * 2019-08-06 2019-11-22 南京大国科技有限公司 基于图像识别的配变台区验收方法、装置及计算机存储介质
CN112803598A (zh) * 2021-03-05 2021-05-14 中国电力科学研究院有限公司 配电网的多源协同保护配置方法、系统、设备和存储介质
CN112803598B (zh) * 2021-03-05 2022-06-07 中国电力科学研究院有限公司 配电网的多源协同保护配置方法、系统、设备和存储介质
CN113189859A (zh) * 2021-04-21 2021-07-30 黄山学院 一种配电环境监测及故障自主解除的设备及方法
CN113189859B (zh) * 2021-04-21 2022-04-15 黄山学院 一种配电环境监测及故障自主解除的设备及方法
CN114157021A (zh) * 2021-10-28 2022-03-08 国网江苏省电力有限公司 用于电网故障的多人协同处置系统及方法
CN114157021B (zh) * 2021-10-28 2024-01-09 国网江苏省电力有限公司 用于电网故障的多人协同处置系统及方法

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