FAULT LOCATION BASED ON COMPREHENSIVE GREY RELATIONAL DEGREE FOR FLEXIBLE DC DISTRIBUTION NETWORK

被引：0
|
作者：
Xu Y. [1 ]
Hu Z. [1 ]
Dong H. [1 ]
Ma T. [2 ]
机构：
[1] State Key Laboratory of New Energy and Electric Power Systems, North China Electric Power University, Baoding
[2] State Grid Hebei Electric Power Co.，Ltd., Electric Power Research Institute, Shijiazhuang
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2023年 / 44卷 / 04期
关键词：
DC distribution network; fault location; grey relational degree; relativity; travelling differential current;
D O I：
10.19912/j.0254-0096.tynxb.2021-1416
中图分类号：
学科分类号：
摘要：
In order to solve the problem of high accuracy and rapidity requirements for fault location in flexible DC distribution networks，a fault location method for flexible DC distribution network based on grey relational degree is proposed. The similarity of the first and last line mode traveling wave differential current waveforms is analyzed using grey relational degree，and the fault location is achieved by solving the optimal time shift. Finally，a six-terminal flexible DC distribution network model is built in Matlab/Simulink for simulation and validation，showing that the method can complete the rapid and accurate location of all types of faults on the whole line，and has a certain resistance to transition resistance，suitable for the case of low sampling frequency，and has high reliability. © 2023 Science Press. All rights reserved.
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页码：324 / 331
页数：7
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