同杆双回线上零序功率方向继电器的误判问题  

WRONG JUDGEMENT OF ZERO SEQUENCE DIRECTIONAL RELAY ON DOUBLE-CIRCUIT LINE ON THE SAME POLE

作　　者：孔伟彬[1] 朱晓彤[2] 张俊洪[2] 程宇 凌峰[4] 

机构地区：[1]广东省电力设计研究院,广东省广州市510600 [2]海军工程大学,湖北省武汉市430033 [3]鞍山电业局,辽宁省鞍山市114002 [4]无锡供电公司,江苏省无锡市214061

出　　处：《电力系统自动化》2002年第22期45-48,共4页Automation of Electric Power Systems

摘　　要：零序功率方向继电器是线路保护中的一个重要元件。文中用六序分量法分析了同杆双回线上零序功率方向继电器的性能。结果表明 ,在同杆双回线上发生三相三导线及三相四导线故障、三相五导线跨线故障时 ,有一回线的零序功率方向会拒动。动模试验证实了理论分析的结果。The zero sequence directional relay is an important relay component for transmission line. Based on the method of six sequence fault component, this paper analyses the performance of zero sequence directional relay on double circuit line on the same pole (DLSP). The result shows that faults, including three phases for three conductors or three phases for four conductors or three phases for five conductors faults, will be wrongly judged as the reverse faults by the zero sequence directional relay on one single circuit line of the DLSP. The dynamic simulation results prove the conclusion.

关 键 词：零序功率方向继电器 误判 继电保护 同杆双回线 输电线路 线路保护 电力系统 

分 类 号：TM588[电气工程—电器]