中国电力2024，Vol.57Issue(5)：188-199,12.DOI:10.11930/j.issn.1004-9649.202307027
基于负序分量的含光伏电源配电网故障区段定位方法
Fault Location Method for Distribution Network with Photovoltaic Power Based on Negative Sequence Component
摘要
Abstract
In order to solve the problem that the fault current can not correctly indicate the fault section due to the connection of photovoltaic power to the distribution network,the three-sequence component of the faulty distribution network with photovoltaic power generation is analyzed,and the negative sequence component is selected as the fault characteristic quantity.A negative sequence reconstruction scheme is proposed for the asymmetric fault scenario.The MK trend detection is used to search the negative-sequence reconstruction sequence with the most obvious fault characteristics.The negative sequence reconstruction voltage amplitude is used to determine the suspicious fault section,and the fault section is finally determined by the phase direction of negative sequence reconstruction current.A distribution network model with photovoltaic power generation is established with the PSCAD/EMTDC simulation platform.The results show that the proposed method can accurately locate the fault section of the distribution network with photovoltaic power generation under different fault types and fault locations,and can provide a theoretical basis for the rapid fault location of the distribution network with photovoltaic power generation.关键词
对称分量法/故障区段定位/负序重构/MK检测/光伏电源Key words
symmetrical component method/fault location/negative sequence reconstruction/MK detection/photovoltaic power generation引用本文复制引用
胡满琳,李楠,李一鸣,皮志勇,朱益,李振兴..基于负序分量的含光伏电源配电网故障区段定位方法[J].中国电力,2024,57(5):188-199,12.基金项目
国家自然科学基金资助项目(大规模电力外送通道重合闸所致重大风险分析与规避控制策略研究,52077120). This work is supported by National Natural Science Foundation of China(Research on Major Risk Analysis and Control Strategy by Reclosing for Large-Scale Power Transmission Channel,No.52077120). （大规模电力外送通道重合闸所致重大风险分析与规避控制策略研究,52077120）
