Reason analysis and treatment of unit lower vacuum trip caused by vacuum pump refusing to linked act

Huadian Technology ›› 2012, Vol. 34 ›› Issue (6): 58-59.

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Reason analysis and treatment of unit lower vacuum trip caused by vacuum pump refusing to linked act

WEI Shengluan

Panzhihua Branch of Huadian Sichuan Power Generation Company Limited, Panzhihua 617065, China

Received:1900-01-01 Revised:1900-01-01 Published:2012-06-25

Abstract

Abstract: In the switch over process of the service power supply in unit No.11of the Panzhihua Branch of Huadian Sichuan Power Generation Company Limited ，the voltage of 400V I B segment was failed, the butterfly valve of the operation vacuum pump B could not linked, and the standby vacuum pump A could not linked startup, which caused the lower vacuum tripping of the unit. The reasons of the faults were analyzed, and it was determined that the main reason of the unit lower vacuum tripping is irrational design of the control loop of vacuum pump. A series of technical improvement measures were adopted, and the operation reliability and safety of the unit were increased effectively.

Key words: vacuum, vacuum pump, control loop, technical reformation

WEI Shengluan. Reason analysis and treatment of unit lower vacuum trip caused by vacuum pump refusing to linked act[J]. Huadian Technology, 2012, 34(6): 58-59.

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Reason analysis and treatment of unit lower vacuum trip caused by vacuum pump refusing to linked act

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