The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
A safety DC insulation monitoring system which can prevent protective relay misoperation because of one point earthing
Author(s): 
Pages: 134-139
Year: Issue:  7
Journal: Relay

Keyword:  one point earthingDC insulation monitoringsystem capacitance analysiscontrol of negative voltage to earthdetection bridge with one armtemporary fixed bridge;
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.
Related Articles
No related articles found