摘要
对存在复杂耦合关系的同杆双回线分解成解耦的同向模网和环流模网的过程进行了理论推导,得到的双回线环流模网具有不包含双回线以外的系统且两端电压为零的特点,该特点使得环流网成为双回线最佳的故障定位网络,从而使复杂的双回线测距简单化。通过对比单相接地故障时双回线环流网与双回线故障线的α模行波的仿真波形,得出了双回线环流量行波与双回线路以外系统无关,且在两端母线处的反射最强而在故障点的反射较弱等特点。这些特点使得基于双回线环流量的单端行波测距具有双端测距效果。为环流量行波用于同杆双回线测距奠定理论基础。
A theoretical derivation process about complicated coupling double-circuit lines on the same pole decomposed into decoupling same directional component mode net and circumfluence component mode net is given in this paper.The obtained circumfluence component mode net has features that the net is nothing to do with systems beyond the double-circuit lines and its two terminal voltages are zero. The above mentioned features make circumfluence component net become the optimal fault location network, and the complicated double-circuit line fault location simplified. Compared mode α travelling wave of double-circuit line on the same pole with that of fault line when single phase earth fault, some conclusions are reached as follows: the circumfluence component travelling waves are free from the systems outside the double-circuit lines, and have strong reflection in two-terminal busbar and weak reflection at fault point. These features make the one-terminal travelling wave fault location based on circumfluence component of double-circuit lines has the same effect as two-terminal one. The paper lays a theoretical foundation for fault location of double-circuit lines on the same pole using circumfluence component travelling wave.This project is supported by National Natural Science Foundation of China (No.50377032).
出处
《继电器》
CSCD
北大核心
2004年第3期1-5,共5页
Relay
基金
国家自然科学基金(50377032)
关键词
输电线路
同杆双回线
环流量
行波特点
double-circuit lines on the same pole
circumfluence component
travelling wave
