工矿自动化2012，Vol.38Issue(3)：51-54,4.DOI:32-1627/TP.20120307.1701.017
基于零序电流特征量的选择性漏电保护选线方法
Line Selection Method of Selective Leakage Protection Based on Characteristic Quantity of Zero Sequence Current
张国军 1苏珂嘉1
作者信息
- 1. 辽宁工程技术大学电气与控制工程学院,辽宁葫芦岛 125105
- 折叠
摘要
Abstract
In allusion to the problem of low sensitivity and poor reliability of existing selective leakage protection device, the paper proposed a line selection method of selective leakage protection based on characteristic quantity of zero-sequence current. It analyzed logical relationship of zero-sequence current ofeach branch during failure of power supply system and introduced principle and realization of the method. The method creates characteristic quantities according to logical relationship and value relationship of secondary side zero-sequence current of zero-sequence current transformer of each branch, and takes the characteristic quantities as criterion of line selection. Matlab simulation result showed the method can effectively select the fault line.关键词
煤矿电力系统/漏电保护/故障选线/零序电流/特征量Key words
coal mine power system/leakage protection/ fault line selection/zero-sequence current/ characteristic quantity分类
矿业与冶金引用本文复制引用
张国军,苏珂嘉..基于零序电流特征量的选择性漏电保护选线方法[J].工矿自动化,2012,38(3):51-54,4.
