WO2022165859A1 - 一种直流配电网保护方法及系统、故障恢复方法及系统 - Google Patents

一种直流配电网保护方法及系统、故障恢复方法及系统 Download PDF

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WO2022165859A1
WO2022165859A1 PCT/CN2021/077003 CN2021077003W WO2022165859A1 WO 2022165859 A1 WO2022165859 A1 WO 2022165859A1 CN 2021077003 W CN2021077003 W CN 2021077003W WO 2022165859 A1 WO2022165859 A1 WO 2022165859A1
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Prior art keywords
switch
distribution network
network
fault
state
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PCT/CN2021/077003
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English (en)
French (fr)
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王晨清
高磊
罗飞
李鹏
孔祥平
杨毅
张弛
郑俊超
林金娇
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国网江苏省电力有限公司电力科学研究院
江苏省电力试验研究院有限公司
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Publication of WO2022165859A1 publication Critical patent/WO2022165859A1/zh

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    • 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
    • H02H7/268—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 for dc systems
    • 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
    • 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
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks

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  • the invention relates to a direct current distribution network protection method and system, and a fault recovery method and system, belonging to the field of direct current distribution networks.
  • the DC distribution network has high distributed power consumption capacity and high load power supply efficiency, and has a good development prospect. Unlike the AC distribution network, the converter devices that make up the DC distribution network have a weak ability to withstand short-circuit current, and the DC short-circuit current increases. More quickly, the short-circuit fault at any point of the DC distribution network will cause the self-protection blocking of the converter devices of the whole network in a short time. Therefore, the fault characteristics of the DC distribution network have a short duration, and the protection is difficult to identify the fault. At the same time, after the fault is isolated, many non-faulty converter devices need to be restored to normal operation in a short time, which further increases the construction of the secondary system of the DC distribution network. difficulty. Therefore, there is an urgent need for a suitable DC distribution network protection method and a fault recovery method.
  • the present invention provides a DC distribution network protection method and system, a fault recovery method and system, and solves the problems disclosed in the background art.
  • the technical scheme adopted in the present invention is:
  • a direct current distribution network protection method comprising,
  • the network is GOOSE network.
  • a DC distribution network protection system comprising,
  • Receiver module Receive from the network the overcurrent direction judged by the switch detection device adjacent to itself;
  • Fault location judgment module judge the fault location according to the overcurrent direction judged by itself and the overcurrent direction judged by the switch protection device adjacent to itself;
  • Jump switch module In response to the fault occurrence position and the switch on the same line or bus, jump off the switch where it is;
  • Signal sending module In response to receiving the quantile signal of the switch where it is located, it sends the protection successful isolation fault signal to the network
  • a fault recovery method for a DC distribution network comprising,
  • the topology matrix of the DC distribution network determine the state of looping and unwinding of the DC distribution network and the need for load transfer
  • the fault recovery command is issued to the power source converter, load transfer switch, and load converter.
  • the fault recovery instructions are sequentially issued to the power source converter device, the load transfer switch, and the load converter device.
  • the network is GOOSE network.
  • a DC distribution network fault recovery system comprising,
  • Status acquisition module in response to receiving the protection successful isolation fault signal in the network, acquire the switching status of each switch and the unlocking status of the converter device from the network;
  • Topology matrix building module According to the switching state of each switch and the unlocking state of the converter device, construct the DC distribution network topology matrix;
  • the module for determining the state of loop closure and load transfer According to the topology matrix of the DC distribution network, determine the state of loop closure and load transfer of the DC distribution network;
  • Command issuing module According to the state of the DC distribution network, the state of loop closure and load transfer, it sends fault recovery commands to the power converter, load transfer switch, and load converter.
  • a computer-readable storage medium storing one or more programs, the one or more programs comprising instructions that, when executed by a computing device, cause the computing device to perform a DC distribution network protection method or a DC distribution network. Grid failure recovery method.
  • a computing device comprising one or more processors, one or more memories, and one or more programs, wherein the one or more programs are stored in the one or more memories and configured to be executed by the one or more The one or more programs are executed by a plurality of processors, and the one or more programs include instructions for performing a method of DC distribution grid protection or a DC distribution grid fault recovery method.
  • the present invention determines the fault location based on the overcurrent direction and effectively isolates the fault. After the fault is isolated, a fault recovery instruction is issued based on the network topology matrix, and each converter device is re-unlocked to restore power supply. The whole process No more than 100 milliseconds, effectively ensuring the safe and reliable operation of the DC distribution network.
  • Fig. 1 is the flow chart of the protection method of DC distribution network
  • FIG. 2 is a flowchart of a method for restoring a fault in a DC distribution network.
  • the protection and fault recovery system of the DC distribution network includes the protection, measurement and control integration device of each switch (referred to as “switch protection and measurement device”), GOOSE network and fault recovery device; among them, the switch protection and measurement device and the fault recovery device are connected to the GOOSE network , the control and protection devices of each converter device are also connected to the GOOSE network.
  • a DC distribution network protection method is suitable for the switch protection and testing device side, and specifically includes the following steps:
  • Step 1 Receive from the GOOSE network the overcurrent direction judged by the switch detection device adjacent to itself.
  • the testing device side has the ability to judge the overcurrent and the switching state of the collecting switch, and the testing device sends the judgment result to the GOOSE network.
  • the overcurrent direction refers to the judgment of the current direction after the current amplitude exceeds the fixed value. If the current is positive, it is forward, and if the current is negative, it is reverse.
  • Step 2 Comprehensively determine the fault occurrence position according to the overcurrent direction determined by itself and the overcurrent direction determined by the switch protection and detection device adjacent to the self.
  • Step 3 if the fault occurs on the same line or bus as the switch where it is located, the protection action jumps off the switch where it is located; otherwise, the protection does not act.
  • Step 4 in response to receiving the quantile signal of the switch where it is located, send a protection successful isolation fault signal to the GOOSE network.
  • the software system corresponding to the above method, the DC distribution network protection system, is loaded on the side of the switch protection and testing device, including:
  • Receiver module Receive from the GOOSE network the overcurrent direction judged by the switch protection device adjacent to itself;
  • Fault location judgment module judge the fault location according to the overcurrent direction judged by itself and the overcurrent direction judged by the switch protection device adjacent to itself;
  • Jump switch module In response to the fault occurrence position and the switch on the same line or bus, jump off the switch where it is;
  • Signal sending module In response to receiving the quantile signal of the switch where it is located, it sends the protection successful isolation fault signal to the GOOSE network.
  • a DC distribution network fault recovery method is suitable for the fault recovery device side, including the following steps:
  • Step 1 in response to receiving the protection successful isolation fault signal in the GOOSE network, obtain the opening and closing state of each switch and the unlocking state of the converter device from the network; wherein, the opening and closing state and the unlocking state are respectively determined by the switch protection detection device and the unlocked state.
  • the control and protection device of the converter device is sent to the GOOSE network.
  • Step 2 Construct a DC distribution network topology matrix according to the switching state of each switch and the unlocking state of the converter device.
  • Step 3 according to the DC distribution network topology matrix, determine the combined and unlooped state of the DC distribution network and the load transfer requirement.
  • the topology matrix of the DC distribution network reflects the wiring of the entire power grid, that is, the power supply path of the power grid. Through the topology matrix, it can be obtained whether the loops between the converters of the DC distribution network are closed, and whether the original power supply of the load is lost, so as to obtain the DC power. The state of the distribution network is closed and disengaged to confirm whether load transfer is required.
  • Step 4 according to the state of the DC power distribution network in the state of loop closure and load transfer, the fault recovery instructions are sequentially issued to the power source type converter device, the load transfer switch, and the load type converter device.
  • the fault recovery instructions are sequentially issued at fixed intervals according to the preset priority.
  • the power source converter device After receiving the fault recovery command, the power source converter device returns to the normal unlocked state.
  • the power source type converter device with the highest priority is responsible for setting the grid voltage, that is, unlocking in constant voltage mode, and the rest power source type converter devices receive faults.
  • the restoration command is restored, the constant power is connected to the grid, that is, the power is unlocked at the constant zero power.
  • the normal unlocking state is restored, thereby restoring the power supply of the DC distribution network. If it is determined that a certain load has lost its original power supply, and it can be transferred to other power supply paths by closing a certain switch, a command to close the switch is issued.
  • the software system corresponding to the above method, the DC distribution network fault recovery system, is loaded on the side of the fault recovery device, including:
  • Status acquisition module in response to receiving the protection successful isolation fault signal in the network, acquire the switching status of each switch and the unlocking status of the converter device from the network;
  • Topology matrix building module According to the switching state of each switch and the unlocking state of the converter device, construct the DC distribution network topology matrix;
  • the module for determining the state of loop closure and load transfer According to the topology matrix of the DC distribution network, determine the state of loop closure and load transfer of the DC distribution network;
  • Command issuing module According to the state of the DC distribution network, the state of loop closure and load transfer, it sends fault recovery commands to the power converter, load transfer switch, and load converter.
  • the above-mentioned DC distribution network protection and fault recovery is an overall process, that is, protection is first and then fault recovery is started immediately. The whole process does not exceed 100 milliseconds.
  • the specific steps are as follows:
  • the switch detection device receives the overcurrent direction judged by the adjacent switch detection device from the GOOSE network.
  • the switch protection test device comprehensively judges the fault occurrence position according to the overcurrent direction determined by itself and the overcurrent direction determined by the switch protection test device adjacent to itself.
  • the fault recovery device In response to receiving the protection successful isolation fault signal in the GOOSE network, the fault recovery device obtains the switching state of each switch and the unlocking state of the converter device from the network.
  • the fault recovery device constructs the DC distribution network topology matrix according to the switching state of each switch and the unlocking state of the converter device.
  • the fault recovery device determines the combined and unlooped state of the DC distribution network and the need for load transfer.
  • the fault recovery device sends fault recovery instructions to the power source converter, load transfer switch, and load converter in sequence according to the state of the DC distribution network in which the loop is closed and unloaded and the load transfer needs.
  • the present invention determines the fault location based on the overcurrent direction and effectively isolates the fault. After the fault is isolated, the fault recovery instruction is issued based on the network topology matrix, and each converter device is unlocked to restore power supply. The whole process does not exceed 100 milliseconds, which effectively guarantees Safe and reliable operation of DC distribution network.
  • a computer-readable storage medium storing one or more programs, the one or more programs comprising instructions that, when executed by a computing device, cause the computing device to perform a DC distribution network protection method or a DC distribution network. Grid failure recovery method.
  • a computing device comprising one or more processors, one or more memories, and one or more programs, wherein the one or more programs are stored in the one or more memories and configured to be executed by the one or more The one or more programs are executed by a plurality of processors, and the one or more programs include instructions for performing a method of DC distribution grid protection or a DC distribution grid fault recovery method.
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

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  • Power Engineering (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
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Abstract

本发明公开了一种直流配电网保护方法及系统、故障恢复方法及系统，本发明基于过电流方向确定故障位置并有效隔离故障，在故障隔离后，基于网络拓扑矩阵下发故障恢复指令，对各换流装置进行重新解锁恢复供电，整个过程不超过百毫秒，有效保障了直流配电网的安全可靠运行。

Description

一种直流配电网保护方法及系统、故障恢复方法及系统 技术领域
本发明涉及一种直流配电网保护方法及系统、故障恢复方法及系统，属于直流配电网领域。
背景技术
直流配电网具有高分布式电源消纳能力和高负荷供电效率，发展前景良好，与交流配电网不同，组成直流配电网的换流装置耐受短路电流能力弱，且直流短路电流上升更为迅速，直流配电网任一点短路故障将会在短时间内引起全网换流装置自保性闭锁。因此直流配电网故障特征持续时间短，保护难以识别故障，同时故障隔离后还需要在短时间内将众多非故障换流装置恢复到正常运行状态，进一步增加了直流配电网二次系统构建的难度。因此现在急需一种适配的直流配电网保护方法及故障恢复方法。
发明内容
本发明提供了一种直流配电网保护方法及系统、故障恢复方法及系统，解决了背景技术中披露的问题。
为了解决上述技术问题，本发明所采用的技术方案是：
一种直流配电网保护方法，包括，
从网络接收与自身相邻的开关保测装置判断的过电流方向；
根据自身判断的过流方向、与自身相邻的开关保测装置判断的过电流方向，判断故障发生位置；
响应于故障发生位置与自身所在开关在同线路或母线上，跳开自身所在开关；
响应于接收到自身所在开关的分位信号，向网络上送保护成功隔离故障信号。
网络为GOOSE网络。
一种直流配电网保护系统，包括，
接收模块：从网络接收与自身相邻的开关保测装置判断的过电流方向；
故障发生位置判断模块：根据自身判断的过流方向、与自身相邻的开关保测装置判断的过电流方向，判断故障发生位置；
跳开开关模块：响应于故障发生位置与自身所在开关在同线路或母线上，跳开自身所在开关；
信号上送模块：响应于接收到自身所在开关的分位信号，向网络上送保护成功隔离故障信号
一种直流配电网故障恢复方法，包括，
响应于网络中接收到保护成功隔离故障信号，从网络中获取各开关的分合状态和换流装置的解闭锁状态；
根据各开关的分合状态和换流装置的解闭锁状态，构建直流配电网拓扑矩阵；
根据直流配电网拓扑矩阵，确定直流配电网的合解环状态和负荷转供需要；
根据直流配电网的合解环状态和负荷转供需要，向电源型换流装置、负荷转供开关、负荷型换流装置下发故障恢复指令。
根据直流配电网的合解环状态和负荷转供需要，向电源型换流装置、负荷转供开关、负荷型换流装置依次下发故障恢复指令。
若电源型换流装置和负荷型换流装置有多个，均根据预设的优先级，下发 故障恢复指令。
网络为GOOSE网络。
一种直流配电网故障恢复系统，包括，
状态获取模块：响应于网络中接收到保护成功隔离故障信号，从网络中获取各开关的分合状态和换流装置的解闭锁状态；
拓扑矩阵构建模块：根据各开关的分合状态和换流装置的解闭锁状态，构建直流配电网拓扑矩阵；
合解环状态和负荷转供需要确定模块：根据直流配电网拓扑矩阵，确定直流配电网的合解环状态和负荷转供需要；
指令下发模块：根据直流配电网的合解环状态和负荷转供需要，向电源型换流装置、负荷转供开关、负荷型换流装置下发故障恢复指令。
一种存储一个或多个程序的计算机可读存储介质，所述一个或多个程序包括指令，所述指令当由计算设备执行时，使得所述计算设备执行直流配电网保护方法或直流配电网故障恢复方法。
一种计算设备，包括一个或多个处理器、一个或多个存储器以及一个或多个程序，其中一个或多个程序存储在所述一个或多个存储器中并被配置为由所述一个或多个处理器执行，所述一个或多个程序包括用于执行直流配电网保护方法或直流配电网故障恢复方法的指令。
本发明所达到的有益效果：本发明基于过电流方向确定故障位置并有效隔离故障，在故障隔离后，基于网络拓扑矩阵下发故障恢复指令，对各换流装置进行重新解锁恢复供电，整个过程不超过百毫秒，有效保障了直流配电网的安全可靠运行。
附图说明
图1为直流配电网保护方法的流程图；
图2为直流配电网故障恢复方法的流程图。
具体实施方式
下面结合附图对本发明作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本发明的保护范围。
直流配电网的保护与故障恢复系统包括各开关的保护测控一体化装置(简称“开关保测装置”)、GOOSE网络和故障恢复装置；其中，开关保测装置和故障恢复装置接入GOOSE网络，各换流装置的控保装置也接入该GOOSE网络。
如图1所示，一种直流配电网保护方法，适用于开关保测装置侧，具体包括以下步骤：
步骤1，从GOOSE网络接收与自身相邻的开关保测装置判断的过电流方向。
保测装置侧具备判断过电流和收集开关分合状态能力，保测装置将判断的结果发送至GOOSE网络中。
过流方向是指电流幅值超过定值后判断电流方向，若电流为正则为正向，若电流为负则为反向。
步骤2，根据自身判断的过流方向、与自身相邻的开关保测装置判断的过电流方向，综合判断故障发生位置。
步骤3，若故障发生位置与自身所在开关在同线路或母线上，保护动作跳开自身所在开关；否则保护不动作。
步骤4，响应于接收到自身所在开关的分位信号，向GOOSE网络上送保护成功隔离故障信号。
上述方法相应的软件系统，直流配电网保护系统，装载于开关保测装置侧，包括：
接收模块：从GOOSE网络接收与自身相邻的开关保测装置判断的过电流方向；
故障发生位置判断模块：根据自身判断的过流方向、与自身相邻的开关保测装置判断的过电流方向，判断故障发生位置；
跳开开关模块：响应于故障发生位置与自身所在开关在同线路或母线上，跳开自身所在开关；
信号上送模块：响应于接收到自身所在开关的分位信号，向GOOSE网络上送保护成功隔离故障信号。
故障隔离成功后，需要启动故障恢复流程，如图2所示，一种直流配电网故障恢复方法，适用于故障恢复装置侧，包括以下步骤：
步骤1，响应于GOOSE网络中接收到保护成功隔离故障信号，从网络中获取各开关的分合状态和换流装置的解闭锁状态；其中，分合状态和解闭锁状态分别由开关保测装置和换流装置控保装置上送至GOOSE网络。
步骤2，根据各开关的分合状态和换流装置的解闭锁状态，构建直流配电网拓扑矩阵。
步骤3，根据直流配电网拓扑矩阵，确定直流配电网的合解环状态和负荷转供需要。
直流配电网拓扑矩阵反映整个电网的接线情况，即电网的供电通路情况，通过拓扑矩阵可以得到直流配电网各个换流器之间是否合环，负荷的原电源是否失去，从而获取到直流配电网的合解环状态，确认是否需要进行负荷转供。
步骤4，根据直流配电网的合解环状态和负荷转供需要，向电源型换流装置、负荷转供开关、负荷型换流装置依次下发故障恢复指令。
若电源型换流装置和负荷型换流装置有多个，即不唯一，均根据预设的优先级以固定间隔依次下发故障恢复指令。
电源型换流装置接收故障恢复指令后，恢复正常解锁状态，在同一个GOOSE网络中优先级最高电源型换流装置负责定电网电压，即以定电压模式解锁，其余电源型换流装置接收故障恢复恢复指令后定功率并网，即以定零功率解锁，负荷型换流装置故障恢复指令后，恢复正常解锁状态，从而恢复直流配电网的供电。若判断出某处负荷失去原电源，且可通过合某开关转供到其余供电路径，下发合该开关命令。
上述方法相应的软件系统，直流配电网故障恢复系统，装载于故障恢复装置侧，包括：
状态获取模块：响应于网络中接收到保护成功隔离故障信号，从网络中获取各开关的分合状态和换流装置的解闭锁状态；
拓扑矩阵构建模块：根据各开关的分合状态和换流装置的解闭锁状态，构建直流配电网拓扑矩阵；
合解环状态和负荷转供需要确定模块：根据直流配电网拓扑矩阵，确定直流配电网的合解环状态和负荷转供需要；
指令下发模块：根据直流配电网的合解环状态和负荷转供需要，向电源型换流装置、负荷转供开关、负荷型换流装置下发故障恢复指令。
上述的直流配电网保护和故障恢复为一个整体流程，即先保护然后马上启动故障恢复，整个过程不超过百毫秒，具体步骤如下：
1)开关保测装置从GOOSE网络接收与自身相邻的开关保测装置判断的过电流方向。
2)开关保测装置根据自身判断的过流方向、与自身相邻的开关保测装置判断的过电流方向，综合判断故障发生位置。
3)若故障发生位置与自身所在开关在同线路或母线上，保护动作跳开自身所在开关；否则保护不动作。
4)响应于接收到自身所在开关的分位信号，向GOOSE网络上送保护成功隔离故障信号。
5)响应于GOOSE网络中接收到保护成功隔离故障信号，故障恢复装置从网络中获取各开关的分合状态和换流装置的解闭锁状态。
6)故障恢复装置根据各开关的分合状态和换流装置的解闭锁状态，构建直流配电网拓扑矩阵。
7)故障恢复装置根据直流配电网拓扑矩阵，确定直流配电网的合解环状态和负荷转供需要。
8)故障恢复装置根据直流配电网的合解环状态和负荷转供需要，向电源型换流装置、负荷转供开关、负荷型换流装置依次下发故障恢复指令。
本发明基于过电流方向确定故障位置并有效隔离故障，在故障隔离后，基于网络拓扑矩阵下发故障恢复指令，对各换流装置进行重新解锁恢复供电，整个过程不超过百毫秒，有效保障了直流配电网的安全可靠运行。
一种存储一个或多个程序的计算机可读存储介质，所述一个或多个程序包括指令，所述指令当由计算设备执行时，使得所述计算设备执行直流配电网保护方法或直流配电网故障恢复方法。
一种计算设备，包括一个或多个处理器、一个或多个存储器以及一个或多个程序，其中一个或多个程序存储在所述一个或多个存储器中并被配置为由所述一个或多个处理器执行，所述一个或多个程序包括用于执行直流配电网保护方法或直流配电网故障恢复方法的指令。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处 理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
以上仅为本发明的实施例而已，并不用于限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均包含在申请待批的本发明的权利要求范围之内。

Claims (10)

  1. 一种直流配电网保护方法，其特征在于：包括，
    从网络接收与自身相邻的开关保测装置判断的过电流方向；
    根据自身判断的过流方向、与自身相邻的开关保测装置判断的过电流方向，判断故障发生位置；
    响应于故障发生位置与自身所在开关在同线路或母线上，跳开自身所在开关；
    响应于接收到自身所在开关的分位信号，向网络上送保护成功隔离故障信号。
  2. 根据权利要求1所述的一种直流配电网保护方法，其特征在于：网络为GOOSE网络。
  3. 一种直流配电网保护系统，其特征在于：包括，
    接收模块：从网络接收与自身相邻的开关保测装置判断的过电流方向；
    故障发生位置判断模块：根据自身判断的过流方向、与自身相邻的开关保测装置判断的过电流方向，判断故障发生位置；
    跳开开关模块：响应于故障发生位置与自身所在开关在同线路或母线上，跳开自身所在开关；
    信号上送模块：响应于接收到自身所在开关的分位信号，向网络上送保护成功隔离故障信号
  4. 一种直流配电网故障恢复方法，其特征在于：包括，
    响应于网络中接收到保护成功隔离故障信号，从网络中获取各开关的分合状态和换流装置的解闭锁状态；
    根据各开关的分合状态和换流装置的解闭锁状态，构建直流配电网拓扑矩阵；
    根据直流配电网拓扑矩阵，确定直流配电网的合解环状态和负荷转供需要；
    根据直流配电网的合解环状态和负荷转供需要，向电源型换流装置、负荷转供开关、负荷型换流装置下发故障恢复指令。
  5. 根据权利要求4所述的一种直流配电网故障恢复方法，其特征在于：根据直流配电网的合解环状态和负荷转供需要，向电源型换流装置、负荷转供开关、负荷型换流装置依次下发故障恢复指令。
  6. 根据权利要求5所述的一种直流配电网故障恢复方法，其特征在于：若电源型换流装置和负荷型换流装置有多个，均根据预设的优先级，下发故障恢复指令。
  7. 根据权利要求4所述的一种直流配电网故障恢复方法，其特征在于：网络为GOOSE网络。
  8. 一种直流配电网故障恢复系统，其特征在于：包括，
    状态获取模块：响应于网络中接收到保护成功隔离故障信号，从网络中获取各开关的分合状态和换流装置的解闭锁状态；
    拓扑矩阵构建模块：根据各开关的分合状态和换流装置的解闭锁状态，构建直流配电网拓扑矩阵；
    合解环状态和负荷转供需要确定模块：根据直流配电网拓扑矩阵，确定直流配电网的合解环状态和负荷转供需要；
    指令下发模块：根据直流配电网的合解环状态和负荷转供需要，向电源型换流装置、负荷转供开关、负荷型换流装置下发故障恢复指令。
  9. 一种存储一个或多个程序的计算机可读存储介质，其特征在于：所述一个或多个程序包括指令，所述指令当由计算设备执行时，使得所述计算设备执行根据权利要求1至2、或4至7所述的方法中的任一方法。
  10. 一种计算设备，其特征在于：包括，
    一个或多个处理器、一个或多个存储器以及一个或多个程序，其中一个或多个程序存储在所述一个或多个存储器中并被配置为由所述一个或多个处理器执行，所述一个或多个程序包括用于执行根据权利要求1至2、或4至7所述的方法中的任一方法的指令。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115508670A (zh) * 2022-11-04 2022-12-23 清华大学 柔性直流牵引供电系统接触网故障电流计算方法及装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113820562B (zh) * 2021-09-08 2024-05-14 国电南瑞科技股份有限公司 一种低压直流配电网故障处理系统及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106026045A (zh) * 2016-06-28 2016-10-12 国网山东省电力公司济南供电公司 一种含分布式电源的电缆线路故障处理方法
CN107872058A (zh) * 2017-11-22 2018-04-03 深圳供电局有限公司 一种融合线路自愈的配网一体化保护方法
CN108988305A (zh) * 2018-07-24 2018-12-11 南京南瑞继保电气有限公司 一种直流配电网系统的保护方法
CN110224383A (zh) * 2019-06-28 2019-09-10 深圳供电局有限公司 一种配电网故障自愈与线损协同优化方法及系统
EP3696927A1 (de) * 2019-02-15 2020-08-19 Siemens Aktiengesellschaft Vorrichtung und verfahren zur überwachung mehrerer stromabgänge in einem stromnetz
CN111969568A (zh) * 2020-06-29 2020-11-20 国电南瑞南京控制系统有限公司 一种直流配电网故障定位、隔离、自愈方法、系统及存储介质

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106026045A (zh) * 2016-06-28 2016-10-12 国网山东省电力公司济南供电公司 一种含分布式电源的电缆线路故障处理方法
CN107872058A (zh) * 2017-11-22 2018-04-03 深圳供电局有限公司 一种融合线路自愈的配网一体化保护方法
CN108988305A (zh) * 2018-07-24 2018-12-11 南京南瑞继保电气有限公司 一种直流配电网系统的保护方法
EP3696927A1 (de) * 2019-02-15 2020-08-19 Siemens Aktiengesellschaft Vorrichtung und verfahren zur überwachung mehrerer stromabgänge in einem stromnetz
CN110224383A (zh) * 2019-06-28 2019-09-10 深圳供电局有限公司 一种配电网故障自愈与线损协同优化方法及系统
CN111969568A (zh) * 2020-06-29 2020-11-20 国电南瑞南京控制系统有限公司 一种直流配电网故障定位、隔离、自愈方法、系统及存储介质

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115508670A (zh) * 2022-11-04 2022-12-23 清华大学 柔性直流牵引供电系统接触网故障电流计算方法及装置

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