A quick fault location and isolation method in distribution network based on adaptive reclosure

被引：0
|
作者：
Zhang W. [1 ]
Song G. [1 ]
Dou M. [2 ]
Chang Z. [1 ]
Zhang Z. [2 ]
Liu J. [2 ]
Guo S. [3 ]
机构：
[1] School of Electrical Engineering, Xi'an Jiaotong University, Xi'an
[2] Electric Power Research Institute of State Grid Shaanxi Electric Power Company, Xi'an
[3] Zhuhai XJ Electric Co., Ltd., Zhuhai
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2019年 / 47卷 / 18期
关键词：
Adaptive reclosure; Fault isolation and location; Fault phase selector; Phase segregated switch; Voltage-time feeder automation;
D O I：
10.19783/j.cnki.pspc.181530
中图分类号：
学科分类号：
摘要：
Feeder automation is important to improve the reliability of distribution network power supply. To solve the problem existed in the voltage-time feeder automation that the fault processing time is long, the upstream switches of the fault point need to tolerate fault current twice and the upstream sections need to experience two short time power outage, a quick fault location and isolation method for distribution network based on adaptive reclosure is proposed in this paper. Three key technologies of the strategy are introduced, including phase selector based on transient current characteristics, a method for distinguishing the transient fault and permanent fault based on the power frequency voltage characteristics, and a phase segregated switch of the distribution network based on the permanent magnet operating structure. The proposed strategy can avoid the second impact on upstream switches and power-off of the upstream section when the fault is permanent, as well as the fault processing time can be effectively shortened. © 2019, Power System Protection and Control Press. All right reserved.
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页码：60 / 67
页数：7
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