A pilot protection method for distribution system with distributed generators

被引:5
作者
Xu, Sixuan [1 ]
Lu, Yuping [1 ]
机构
[1] School of Electrical Engineering, Southeast University, Nanjing
来源
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2015年 / 39卷 / 09期
基金
中国国家自然科学基金;
关键词
Current amplitude; Distributed generator (DG); Distribution system; Measured impedance; Pilot protection;
D O I
10.7500/AEPS20140430004
中图分类号
学科分类号
摘要
In this paper, a new pilot protection algorithm for distribution system with distributed generators (DGs) is proposed. By analyzing fault current amplitude characteristic of distribution system with DGs, a conclusion is confirmed that current amplitudes are significantly different under ordinary DG penetration. And the conclusion supports the new idea that current amplitude difference could be used to distinguish fault condition in distribution system with DGs. The only needed information is the measured impedance of equivalent source and current amplitude of the other end, and no compulsory phase synchronization is needed. The new method tolerates the calculating error caused by inverter interfaced distributed generator (IIDG) and is practical. © 2015 State Grid Electric Power Research Institute Press.
引用
收藏
页码:113 / 118and155
相关论文
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