高压开关柜绝缘特性监测系统设计

Design Insulation Characteristic Monitoring System of High Voltage Switchgear

为了提高高压开关柜绝缘状态检测水平,保证高压开关柜的可靠运行,提出了一种基于泄漏电流监测的高压开关柜绝缘特性监测系统。在分析常用四种信号隔离技术基础上,阐述了泄露电流的测试原理,利用PIC单片机设计高压开关柜泄漏电流监测系统,并详细设计了硬件电路整体结构和软件流程。

In order to improve the level of insulation condition detection of high voltage switchgear cabinet and ensure the reliable operation of high voltage switchgear cabinet,a high voltage switchgear insulation characteristic monitoring system based on leakage current monitoring is proposed.Based on the analysis of four commonly used signal isolation techniques,this paper expounds the testing principle of leakage current,designs the leakage current monitoring system of high voltage switchgear by PIC microcomputer,and designs the whole structure of hardware circuit and software flow in detail.