电力系统保护与控制2025，Vol.53Issue(24)：13-25,13.DOI:10.19783/j.cnki.pspc.250173
基于时域差分运算的配电网多分支线路故障定位方法
Fault location method for multi-branch distribution network lines based on time-domain differential operation
摘要
Abstract
To address the high cost of installing fault location terminals and the complexity of wavefront identification in multi-branch distribution network lines,a fault location method based on time-domain differential operation is proposed.First,the line-mode component of the fault-induced voltage traveling waves is expressed as an exponentially decaying component superimposed on a sinusoidal waveform within a specific time window.By applying a time-domain differential operation,the sinusoidal component is eliminated,thereby transforming the fault traveling wave into pulse signals.Furthermore,temporal sequence constraints for the fault reflection waves are established to accurately identify the arrival times of the wavefronts when faults occur on different branches.Finally,various fault scenarios are simulated and validated in MATLAB/Simulink.The results indicate that the proposed method can achieve accurate fault localization with traveling-wave acquisition devices installed only on the main line.The method exhibits minimal sensitivity to variations in fault type,initial inception angle,and fault resistance,demonstrating excellent reliability and cost-effectiveness.关键词
配电网/多分支线路/波头标定/时域差分运算/故障定位Key words
distribution network/multi-branch lines/wavefront identification/time-domain differential operation/fault location引用本文复制引用
吉兴全,黄心月,张玉敏,叶平峰,裴佑楠,翟鹤峰..基于时域差分运算的配电网多分支线路故障定位方法[J].电力系统保护与控制,2025,53(24):13-25,13.基金项目
This work is supported by the National Natural Science Foundation of China(No.52107111). 国家自然科学基金项目资助(52107111) （No.52107111）
中国博士后面上项目资助(2023M734092) （2023M734092）
山东省自然科学基金项目资助(ZR2022ME219,ZR2023QE181,ZR2024ME029) （ZR2022ME219,ZR2023QE181,ZR2024ME029）
