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Location method and system for ground fault point of distribution network based on binary optimization

A ground fault, binary technology, applied in the fault location, detecting faults by conductor type, measuring electricity and other directions, to achieve the effect of strong practicability, easy promotion and easy realization

Active Publication Date: 2022-06-14
云南电网有限责任公司怒江供电局
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Problems solved by technology

[0005] This application provides a method and system for locating ground fault points in a distribution network based on binary optimization to solve the technical problem of accurately locating ground fault points

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  • Location method and system for ground fault point of distribution network based on binary optimization
  • Location method and system for ground fault point of distribution network based on binary optimization

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[0047] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0048] See attached figure 1 , figure 1 A schematic flowchart of a method for locating a ground fault point in a distribution network based on binary optimization provided by an embodiment of the present application is shown. Attached below figure 1 The method for locating the ground fault point of distribution network based on binary opti...

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Abstract

In the method and system for locating the ground fault point of distribution network based on binary optimization provided by this application, firstly, it is judged whether a ground fault occurs according to the conductance ratio to ground at the current moment and the previous moment. The distance between the nodes and the time difference between the first wave of the fault transient traveling wave arriving at two adjacent nodes obtain the initial value of the distance between the fault point and a node; then a straight line group is proposed, and the straight line group includes several fitted straight lines , calculate the distance from each node to each line in the line group according to the constructed objective function, and then optimize according to the binary particle swarm optimization algorithm to obtain the line with the shortest distance from each node in the line group. After obtaining this line, according to this The intercept of a straight line can get the final value of the distance from the fault point to a node, and the location of the fault point can be judged according to the final value, and then the technical problem of accurately locating the ground fault point is solved .

Description

technical field [0001] The present application relates to the technical field of distribution network fault detection, in particular to a method and system for locating a ground fault point in a distribution network based on binary optimization. Background technique [0002] Distribution network fault location is one of the key factors to realize distribution network automation. Accurate location of ground fault is of great significance to shorten the power outage time, reduce the power outage scope and improve the power supply reliability of distribution network. [0003] At present, the distribution network fault location is based on the binary particle swarm algorithm. The process includes determining the particle swarm parameters, constructing a function according to the particle swarm parameters, and then updating the speed and position of the particle swarm. If the maximum number of iterations is reached, the calculation is stopped and the particle swarm is output. The...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/52G01R31/08
CPCG01R31/52G01R31/086G01R31/088
Inventor 孔碧光刘晓欣普碧才杨修正曾祥君陈增平李承钧孔德朋陈宣林陈义忠英自才刘绍正肖超普永生
Owner 云南电网有限责任公司怒江供电局
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