基于10kV配电自动化终端零序电流序列表的接地故障定位方法

Grounding fault location method based on zero sequence current sequence table of 10kV distribution automation terminal

本文通过在配网自动化主站充分利用10kV配电自动化终端的三遥信息,结合主网自动化主站10kV母线接地信号,给出该站所有配电自动化终端零序电流列表排序,配网调度员通过判断零序电流最大的终端来辅助判断接地点位置,实现配网接地故障智能诊断分析,为配网调度和运维人员提供快速、精准的接地故障诊断信息,提高故障切除效率,从而提高配网可靠性。

In this paper,by making full use of the three remote information of 10kV distribution automation terminal in the distribution automation master station,combined with the 10kV bus grounding signal of the master station,the zero sequence current list of all distribution automation terminals in the station is given.The distribution network dispatcher can judge the location of grounding point by judging the terminal with the largest zero sequence current,so as to realize the intelligent diagnosis and analysis of distribution network grounding fault,It can provide fast and accurate grounding fault diagnosis information for distribution network dispatching and operation and maintenance personnel,improve fault removal efficiency,and improve distribution network reliability.