摘要
根据直流配电网故障后稳态时的特性,给出一种基于故障分量的故障定位方法的故障区定位方式。利用区间故障分量电流方向判断故障区间,根据故障后系统的网络拓扑的变化,列写故障分量信息构成的节点电压方程,求解方程实现故障测距。最后在matlab/simulink中进行算例分析,仿真结果表明,该算法不受故障类型与过渡电阻的影响,误差也满足要求。
According to the characteristics of steady state after the DC distribution network is faulty,a fault location method based on fault component information is proposed.The fault interval is determined by the interval fault component current direction.According to the solution of the voltage equation of the node composed of the fault component information,the fault distance can be obtained.Finally,the results of Matlab/simulink are analyzed.The simulation results show that the algorithm is not affected by the fault type and the transition resistance.The error also satisfies the requirement.
作者
陈达
吴羚敏
凌飞鸿
章江海
CHEN Da;WU Ling-min;LING Fei-hong;ZHANG Jiang-hai(College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350116,China;State Grid Anging Company,Anqing 246000,China)
出处
《电气开关》
2018年第6期23-25,共3页
Electric Switchgear
关键词
直流配电网
故障分量
网络拓扑
故障定位
DC distribution system
fault component
network topology
fault location
