Fault Location of Single-terminal Traveling Wave for Unequal-length Double-circuit Lines Based on Traveling Wave Propagation Path

被引：0

作者：

Shu H. ^{[1
]}

Song J. ^{[1
]}

Tian X. ^{[1
]}

机构：

[1] Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming

来源：

Tian, Xincui (1105479731@qq.com) | 2018年 / Automation of Electric Power Systems Press卷 / 42期

基金：

中国国家自然科学基金;

关键词：

Initial traveling wave of fault loop line; Initial traveling wave of sound loop line; Lightning flashover fault; Single line fault; Single-terminal traveling wave fault location; Unequal length double-circuit lines;

D O I：

10.7500/AEPS20171002001

中图分类号：

学科分类号：

摘要：

Because of the flashover fault caused by lightning stroke, the amplitude of the initial traveling wave of current traveling wave is large, and it is accompanied by a large number of oscillations. However, the amplitude of reflected traveling wave (the reflected wave of fault point and the reflected wave at the end bus) is much smaller than the amplitude of the initial traveling wave. Therefore, it is difficult to identify the reflected waves at fault points on the same observation scale. At the same time, there are no fully equal double circuit lines in the field. Based on this, the distribution characteristics of traveling waves observed on the time axis of the two coordinate axes of the unequal-length double-circuit on the fault line and the measurement end of perfect return line are analyzed. The method of joint observation and identification of fault traveling wave on two scales of fault line measurement end and non-fault line measuring end is proposed. The fault initial wave to the time which comes from fault line and sound line measurement end is used to realize the fault location of the unequal-length double circuit. A large number of measured data show that joint observation on two scales of fault line measurement terminal and non-fault line terminal, especially lightning stroke flashover fault, can identify the fault traveling wave reliably and correctly, and achieve reliable and precise ranging of unequal-length double circuit lines. © 2018 Automation of Electric Power Systems Press.

引用

页码：140 / 147

页数：7

共 15 条

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