一例单相接地故障管理系统并联运行下的误判案例分析

Analysis of Misjudgment Case in Parallel Operation of a Single Phase Grounding Fault Management System

对某化工企业10 kV电力系统发生单相接地故障时,2套MXJD单相接地故障管理系统在并联运行下的误判进行了研究。通过对该案例的现象、原因、影响和处理过程探讨,剖析MXJD单相接地故障管理系统的工作原理、系统设计、数据共享等关键参数,提出了单相接地故障管理系统在并联运行时的一些建议,为电网可靠运行提供参考。

In this article studies the misjudgment of two sets of MXJD single-phase grounding fault management systems in parallel operation when a single-phase grounding fault occurs in a 10 kV power system of a chemical enterprise.By exploring the phenomena,causes,impacts,and handling processes of this case,the working principle,system design,data sharing,and other key parameters of the MXJD single-phase grounding fault management system are analyzed.Some suggestions for the parallel operation of the single-phase grounding fault management system are proposed,providing reference for the reliable operation of the power grid.