中国电机工程学报2017，Vol.37Issue(15)：4304-4314,11.DOI:10.13334/j.0258-8013.pcsee.160990
利用峰值频率的高压直流输电线路纵联保护方案
A Pilot Protection Scheme for HVDC Transmission Lines Based on Specific-Frequency
摘要
Abstract
By virtue of the impedance frequency characteristic of the converter and the DC-side filter,a pilot protection scheme based on the specific-frequencies of the DC-side filter was proposed.At the specific-frequencies,the equivalent impedance of DC-side filter is very large and the DC side equivalent impedance of converter behaves like an inductor.On this condition,the fault characteristic was analyzed.During internal faults,the specific-frequency impedance angle at both terminals is equal to-90°;during external faults,the specific-frequency impedance angle at faulty terminal is 90° and the one at the other terminal is-90°.According to those properties,the fault identification criterion can be constructed.Since the using of single-terminal signal makes poor reliability of faculty pole identification,a novel faulty pole identification criterion based on double-terminal signal was introduced.Comprehensive simulation experiments have shown that the proposed method is simple and of high reliability.Besides,it is not affected by the fault resistance and the distributed capacitive current of transmission line.关键词
高压直流输电线路/纵联保护/峰值频率/阻抗角/直流滤波器Key words
high voltage direct current (HVDC) transmission line/pilot protection/specific-frequency/impedance angle/DC-side filter分类
信息技术与安全科学引用本文复制引用
杨亚宇,邰能灵,范春菊,刘琦,陈金祥..利用峰值频率的高压直流输电线路纵联保护方案[J].中国电机工程学报,2017,37(15):4304-4314,11.基金项目
国家自然科学基金项目(51377104,51407115) （51377104,51407115）
中国博士后科学基金资助项目(2014M560333).Project Supported by National Natural Science Foundation of China (51377104,51407115) （2014M560333）
Project Supported by Chinese Postdoctoral Science Foundation (2014M560333). （2014M560333）
