基于不平衡与平衡电桥结合的直流绝缘监察技术  

DC System Insulation Monitoring Technology Based on Unbalance and Balance Bridge

作　　者：何玉锐[1] 许自纲[2] 赵军[3] 郑丽 

机构地区：[1]湖北省孝感供电公司调度通信所,湖北孝感432100 [2]华北电力大学,河北保定071003 [3]北京京能热电股份有限公司,北京100041 [4]北京华星恒业电气设备有限公司,北京100076

出　　处：《电力科学与工程》2007年第3期30-32,共3页Electric Power Science and Engineering

摘　　要：分析了采用常规平衡电桥原理的直流绝缘监察技术存在的问题,提出了采用不平衡与平衡电桥原理相结合来检测直流系统的绝缘状况,并给出了设计方法。该方法不但可以有效解决对称和不对称的直流接地,同时可以在很大程度上提高直流绝缘检测的灵敏度。The problems of the DC insulation monitor theory adopted routine balance bridge theory were analyzed in this paper. The method based on unbalanced bridge and balance bridge principle to check direct-current system insulation situation at the same time was designed. The method can effectively resolve the problem of symmetrical and asymmetric direct-current ground connection and can improve the checking sensitiveness of ground connection electric resistance at a great extent.

关 键 词：绝缘监察 平衡电桥 电压检测 

分 类 号：TM85[电气工程—高电压与绝缘技术]