Fault location of HVDC transmission lines based on waveform similarity analysis

被引：0

作者：

Li B. ^{[1
]}

Zhang J. ^{[1
]}

Liu H. ^{[1
]}

Li Y. ^{[1
]}

机构：

[1] Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin

来源：

Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2019年 / 39卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Differential current; Electric fault location; HVDC power transmission; Time shift; Transmission line; Waveform similarity;

D O I：

10.16081/j.epae.201909001

中图分类号：

学科分类号：

摘要：

In order to overcome the shortcomings of the traveling wave fault location principle that performs worse in high-resistance fault and requires extremely high sampling frequency, a fault location method based on waveform similarity for HVDC(High Voltage Direct Current) power transmission lines is proposed. Based on the functional relationship between positive and negative differential currents and fault point current, the waveform similarity between positive and negative differential currents is analyzed by using Pearson correlation coefficient and the corresponding information of fault location is extracted. The proposed method takes use of time-domain information of voltages and currents at both ends, is less affected by the transition resistance and noise, and shows high reliability. PSCAD/EMTDC simulation verifies that the proposed method can achieve accurate fault location of the full length of power transmission line. © 2019, Electric Power Automation Equipment Press. All right reserved.

引用

页码：27 / 32and53

页数：3226

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