电力系统保护与控制Issue(7)：134-139,6.
能够防止一点接地导致继电保护误动的安全型直流绝缘监测系统
A safety DC insulation monitoring system which can prevent protective relay misoperation because of one point earthing
南寅 1王雪楠 1樊树根 2赵志群1
作者信息
- 1. 北京人民电器厂有限公司，北京 102600
- 2. 宝鸡供电公司，陕西 宝鸡 721004
- 折叠
摘要
Abstract
Through the mechanism analysis of protective relay misoperation because of one point earthing in power DC system, this paper proposes safety assessment measures based on system capacitance analysis. Combined with conditions of protective relay misoperation caused by one point earthing and State Grid eighteen anti accident measures, it proposes safety design measures that control negative voltage to earth in DC insulation monitoring system, mainly includes the single arm detection bridge and temporary fixed bridge, and describes the specific implementation plan and corresponding algorithm. According to these measures, a higher safety DC insulation monitoring system is designed which can prevent protective relay misoperation because of one point earthing.关键词
一点接地/直流绝缘监测/系统电容分析/控制负极对地电压/单臂检测电桥/临时修正电桥Key words
one point earthing/DC insulation monitoring/system capacitance analysis/control of negative voltage to earth/detection bridge with one arm/temporary fixed bridge分类
信息技术与安全科学引用本文复制引用
南寅,王雪楠,樊树根,赵志群..能够防止一点接地导致继电保护误动的安全型直流绝缘监测系统[J].电力系统保护与控制,2014,(7):134-139,6.
