宁夏电力Issue(5)：58-65,8.DOI:10.3969/j.issn.1672-3643.2025.04.008
基于电光传感的直流线路故障电压行波测量方法
A method for measuring voltage traveling waves of DC transmission line faults based on electro-optic sensing
摘要
Abstract
Voltage traveling wave measurement is a key technology in fault location systems for DC transmission lines.Existing voltage traveling wave measurement methods based on coupling capacitors suffer from insufficient measurement bandwidth,which may cause refusal-to-operate issues in fault location.This paper proposes a new method for measuring voltage traveling waves caused by short-circuit faults in DC transmission lines using electro-optic crystals.The method measures the electric field beneath the transmission line via electro-optic crystals and reconstructs the corresponding voltage traveling waves,enabling accurate broadband measurement of fault traveling waves.Furthermore,a voltage traveling wave sensing system based on electro-optic crystals is designed and implemented,with an electric field mea-surement range from 0.2 kV/m to 70 kV/m and a frequency bandwidth from 50 Hz to 10 MHz.Experimental validation of the proposed system demonstrates its capability to accurately measure voltage traveling waves caused by short-circuit faults in DC transmission lines.The results provide a theoretical foundation for the development of electro-optic crystal-based fault voltage traveling wave measurement systems.关键词
直流输电线路/故障定位/电压行波测量/电光晶体/宽频测量Key words
DC transmission lines/fault location/voltage traveling wave measurement/electro-optic crystal/broadband measurement分类
信息技术与安全科学引用本文复制引用
陆洪建,曹植,潘亮亮,樊星,裴哲浩..基于电光传感的直流线路故障电压行波测量方法[J].宁夏电力,2025,(5):58-65,8.基金项目
国网宁夏电力有限公司科技项目(5229CG230002) （5229CG230002）
