电网技术2017，Vol.41Issue(7)：2363-2369,中插12,8.DOI:10.13335/j.1000-3673.pst.2016.2994
基于相电压电流突变量特征的配电网单相接地故障区段定位方法
Phase Voltage and Current Fault Components Based Fault Segment Location Method Under Single-Phase Earth Fault in Distribution Network
摘要
Abstract
To overcome the shortcomings of existing fault segment location methods that considerable communication is needed and zero-sequence voltage and current are difficult to measure, a method based on phase voltage and current fault components was proposed. It is obtained that when a single-phase earth fault occurs, there will be positive correlation coefficients between current and voltage fault component derivative of each phase of healthy lines, healthy phases of fault line and fault phase of downstream segments of the fault point respectively. On contrary, the correlation coefficients of upstream segments of fault point are negative. Therefore, the farthest segment away from the bus among the segments with negative correlation coefficient is the faulty one. If all correlation coefficients are positive, the fault occurs at the bus. Simulation on PSCAD verifies reliability of proposed method in all types of faults.关键词
智能配电网/相电压电流/突变量/单相接地/区段定位Key words
smart distribution network/phase voltage and current/fault component/single-phase earth fault/segment location1分类
信息技术与安全科学引用本文复制引用
常仲学,宋国兵,黄炜,郭上华,张维..基于相电压电流突变量特征的配电网单相接地故障区段定位方法[J].电网技术,2017,41(7):2363-2369,中插12,8.基金项目
国家电网公司科学技术项目(52020116000F) （52020116000F）
广东省科技计划项目(2015B010128006).Project Supported by Science and Technology Foundation of the State Grid Corporation of China(52020116000F) （2015B010128006）
Provincial Science and Technology Plan Project of Guangdong (2015B010128006). （2015B010128006）
