Hunan Electric Power ›› 2020, Vol. 40 ›› Issue (4): 47-50.doi: 10.3969/j.issn.1008-0198.2020.04.011

• Faults and Analysis • Previous Articles     Next Articles

Analysis of a Grounding Fault Caused by Wiring Error in DC System

CHEN Ruizhen, XIE Zhihao, GAO Tipan, WANG Xiao, CHEN Zhilong   

  1. State Grid Hunan Electric Power Company Limited Maintenance Company, Changsha 410004, China)
  • Received:2020-05-11 Online:2020-08-25 Published:2020-09-30

Abstract: The DC system of substation provides reliable power for protection device, signal device and automatic safety device. It is an important factor of relay correct operating and its fault may affect the safe operations of the power system. According to a metallic ground fault DC bus negative pole occured during the repair work of a battery, the fault cause are analyzed, and some suggestions are put forward for the completion acceptance and routine test of DC systems.

Key words: DC power supply system, ground fault, connection error

CLC Number: