直流系统绝缘监测功能测试设备原理及应用

Principle and Application of DC System Insulation Monitoring Function Test Equipment

直流系统是变电站重要的组成部分,变电站直流系统一般都配置绝缘监测系统及负载支路接地检测功能,能监测直流母线正、负极对地的绝缘电阻及每一负载支路的绝缘电阻值大小。在直流系统验收过程中需要对其绝缘监测功能进行测试,因测试时不仅需要用不同阻值的电阻对正、负极母线绝缘监测功能进行测试,而且需要对每一支路正、负极对地绝缘监测功能进行测试。本文主要对传统直流系统绝缘监测功能测试中遇到的问题进行了分析,针对问题提出了直流系统绝缘监测功能测试设备解决方案,该设备能提高测试效率,实现作业工具的标准化。

The DC system is an important part of the substation.The DC system of the substation is generally equipped with an insulation monitoring system and a ground detection function of the load branch.size.The DC system needs to test its insulation monitoring function during the acceptance process.Because the test not only needs to test the insulation monitoring function of the positive and negative bus bars with different resistance values,but also it needs to isolate the positive and negative of each branch from the ground Monitoring function is tested.This article mainly analyzes the problems encountered in the traditional DC system insulation monitoring function test.Aiming at this problem,a solution for testing equipment for insulation monitoring function of DC system is proposed,which can improve the testing effi ciency and standardize the working tools.