电力系统自动化2018，Vol.42Issue(6)：135-139,5.DOI:10.7500/AEPS20170626001
基于零序电压幅值差的配电网断线识别与隔离
Identification and Isolation of Line Breakage Fault in Distribution Network Based on Zero Sequence Voltage Amplitude Differential Principle
摘要
Abstract
The over-voltage,personnel and animal casualties,rotating motor damage and other accidents often occur in distribution network,which are caused by line breakage fault.In order to solve this problem,distribution characteristics of the zero sequence voltage are analyzed when a line breakage fault in distribution network occurs.There exists a large zero sequence voltage amplitude difference on both sides of the fault point because the system is unbalanced and the voltage is not continuous due to the longitudinal disconnection.Based on this characteristic,a fault identification method based on zero sequence voltage amplitude differential principle is proposed,and two fault processing modes of distributed mode and centralized mode based on distribution automation are given.PSCAD simulation shows that the proposed method can locate all kinds of line breakage fault and is immune to neutral point grounding mode,grounding transition resistance and load size,but it depends on communication.关键词
配电网/断线故障/零序电压幅值差/区段定位Key words
distribution network/line breakage fault/zero sequence voltage amplitude difference/segment location引用本文复制引用
常仲学,宋国兵,王晓卫..基于零序电压幅值差的配电网断线识别与隔离[J].电力系统自动化,2018,42(6):135-139,5.基金项目
广东省科技计划资助项目(2015B010128006) （2015B010128006）
国家电网公司科技项目(52020116000F).This work is supported by Guangdong Provincial Science and Technology Plan(No.2015B010128006)and State Grid Corporation of China(No.52020116000F). （52020116000F）
