中国电力2025，Vol.58Issue(2)：33-42,10.DOI:10.11930/j.issn.1004-9649.202403069
基于模量反向行波的接地极线路故障类型识别与定位方法
Fault Type Recognition and Localization Method for Grounding Electrode Line Based on Modulus Backward Traveling Wave
摘要
Abstract
The traveling wave method is currently a common approach for fault distance measurement in grounding electrode line,but it generally relies on simulation in terms of threshold setting,and cannot determine the type of grounding electrode line fault.To address the above issues,this paper adopts an active traveling wave injection method,and through analytical calculations,obtains the time-domain expression of the modulus-backward traveling wave at the measuring point at the first end of the ground electrode line after a single-line ground fault,a cross-line fault,a single-line open-circuit fault and a double-line open-circuit fault.A grounding electrode line fault type recognition and localization method is proposed based on modulus backward traveling wave.The proposed injection wave method has a clear expression of distance measurement threshold setting,then can accurately identify the type of line fault.The reliability and robustness of this method is verified in PSCAD/EMTDC simulations.Simulation results show that this method can achieve accurate fault distance measurement,and reliably identifies grounding electrode fault type,demonstrating strong tolerance to transition resistance and resistance to noise interference.关键词
高压直流输电/接地极线路/故障定位/故障类型识别/行波法Key words
HVDC transmission/grounding electrode line/fault localization/fault type recognition/traveling wave method引用本文复制引用
赵欣洋,邹洪森,杨晨,李玉琦,李博通,刘思源..基于模量反向行波的接地极线路故障类型识别与定位方法[J].中国电力,2025,58(2):33-42,10.基金项目
国网宁夏电力有限公司科技项目(5229CG230001). This work is supported by Science and Technology Project of State Grid Ningxia Electric Power Co.,Ltd.(No.5229CG230001). （5229CG230001）
