电力系统自动化Issue(15)：100-105,111,7.DOI:10.7500/AEPS20131114015
极化电流行波方向继电器在串补线路中的应用
Application of Polarized Current Travelling Wave Based Directional Relay in Series Compensated Transmission Lines
摘要
Abstract
The polarized current travelling wave based directional relay (PCTDR) utilizing high frequency component of initial current wave and power frequency component of voltage performs effectively in transmission line protection.This relay,which has been successfully implemented in extra-high voltage(EHV)/ultra-high voltage(UHV)transmission lines,can overcome the high frequency transmission limitations of the capacitor voltage transformer (CVT).However,the series capacitor has a significant impact on the travelling wave propagation characteristic in series compensated lines.In this regard,the application problems of PCTDR in series compensated lines are firstly analyzed.Moreover,an improved PCTDR algorithm is proposed based on an investigation of the frequency response of CVT.Further,extensive simulation results have shown that the improved algorithm has a good performance in series compensated lines and is well adaptive in various fault conditions.关键词
超高压/特高压/输电线路/行波保护/串联补偿/极化电流行波/小波变换/方向继电器Key words
extra-high voltage (EHV)/ultra-high voltage (UHV)/transmission line/travelling wave protection/series compensation/polarized current travelling wave/wavelet transform/directional relay引用本文复制引用
罗澍忻,董新洲,施慎行,王世勇..极化电流行波方向继电器在串补线路中的应用[J].电力系统自动化,2014,(15):100-105,111,7.基金项目
国家自然科学基金重点资助项目(50937003) （50937003）
国家自然科学基金重大国际(地区)合作研究项目(51120175001) （地区）
国家电网公司科技项目“智能配电网自愈控制技术研究与开发”。@@@@This work is supported by the State Key Program of National Natural Science Foundation of China (No.50937003), National Natural Science Foundation of China(No.51120175001)and State Grid Corporation of China （No.50937003）
