Huadian Technology ›› 2009, Vol. 31 ›› Issue (9): 13-14.

• 专题综述 • Previous Articles     Next Articles

Thinking about a line protection mal operation accident

WANG Jinjun   

  1. Mudanjiang Second Power Plant of Huadian Energy Corporation Limited,Mudanjiang 157015,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-09-25 Published:2009-09-25

Abstract: Taking a mal function accident as instance, the function of functional contact plate of 220kV block high frequency line protection was illustrated. The faults caused by poor contact of functional contact plate were analyzed. The matters needing attention and inspection method for the maintainers and operators in their overhaul and operation were expounded.

Key words: line protection device, functional contact plate of block high frequency protection, mal function, reason of fault, analysis