电力系统保护与控制2024，Vol.52Issue(3)：74-82,9.DOI:10.19783/j.cnki.pspc.230637
基于电磁时间反演P范数判据的配电网故障定位
Distribution network fault location based on an electromagnetic time reversal P-parametric criterion
摘要
Abstract
Electromagnetic time reversal(EMTR)is mostly applied to single line fault localization,and the existing criterion is not satisfactory in the case of high impedance grounding.To address the above problem,this paper derives the transfer function of the line fault and measurement signals in the propagation process based on the EMTR fault localization principle and uniform transmission line theory.It proposes a P-parametric criterion based on the correlation of the transfer function.The ATP-EMTP is used to build 10 kV distribution lines to compare the localization performance of the 2-parametric and P-parametric criterion in complex distribution networks,and to verify the applicability of the proposed criterion in hybrid distribution lines.Finally,the robustness of the P-parametric criterion is analyzed in the cases of occurrence of low and high impedance ground faults in distribution networks.Simulation results show that the method can locate accurately with transition resistances as high as 3 kΩ with high accuracy,and is less affected by noise,fault type and sampling frequency.关键词
电磁时间反演/传递函数/P范数/配电网/故障定位/高阻抗接地Key words
EMTR/transfer function/P-parametric/distribution network/fault location/high impedance grounding引用本文复制引用
刘青,黄玉河,王宇,付瑶,王乐之..基于电磁时间反演P范数判据的配电网故障定位[J].电力系统保护与控制,2024,52(3):74-82,9.基金项目
This work is supported by the National Natural Science Foundation of China(No.52077167). 国家自然科学基金项目资助(52077167) （No.52077167）
梯级水电站运行与控制湖北省重点实验室开放基金项目资助(2021KJX03) （2021KJX03）
