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.

• 技术交流 • Previous Articles Next Articles

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 Online:2012-06-25 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.

[1]	SUN Shugang,ZHU Yu,QIAN Bing,LI Xiaowu, NI Hongjun. Coating transfer process optimization based on GA [J]. Huadian Technology, 2020, 42(2): 72-75.
[2]	JIN Wei. Energysaving transformation of vacuum pump in 660MW steam turbine generator set  [J]. Huadian Technology, 2019, 41(7): 40-42.
[3]	WANG Gang. Design of antipurge device for improving the accuracy of boiler secondary air quantity measurement [J]. Huadian Technology, 2019, 41(6): 76-77.
[4]	WANG Min1，WANG Jie2. Cause analysis and treatment of low vacuum of condenser in 660MW supercritical unit [J]. Huadian Technology, 2019, 41(3): 59-61.
[5]	YUAN Jie, QIAN Weiwu, SHI Xiaowei, HAN Jingyi. Cause analysis and treatment of condenser vacuum system leakage [J]. Huadian Technology, 2018, 40(8): 59-60.
[6]	CHEN Li1，WU Chunchao2. Cause analysis and treatment of high moisture content of gypsum in 1050MW unit [J]. Huadian Technology, 2018, 40(5): 56-57.
[7]	YU Li1,2. A scheme to reduce the exhaust temperature of the HRSG in the regional gas distribution system [J]. Huadian Technology, 2018, 40(4): 42-44.
[8]	ZONG Xudong. Problems and optimization of water ring vacuum pump in thermal power plant [J]. Huadian Technology, 2018, 40(2): 29-31.
[9]	DONG Lin1，ZENG Yajie2，SHEN Yang1，LIU Mingxing1，ZHANG Zhiyong1，MA Yong3. Diagnosis of vacuum drop of 680MW ultrasupercritical unit [J]. Huadian Technology, 2018, 40(11): 31-33.
[10]	LIU Longxiang. The analysis of condenser vacuum measurement transformation for 600MW supercritical thermal power unit [J]. Huadian Technology, 2017, 39(8): 39-41.
[11]	MA Xiaojuan, PAN Yapei, YANG Zhao. Internetofthingsbased high voltage vacuum breaker intelligent digital monitoring system analysis [J]. Huadian Technology, 2017, 39(2): 12-15.
[12]	YANG Xutao. Analysis of QFR480 generator seal oil pressure abnormal fluctuation and solve [J]. Huadian Technology, 2016, 38(5): 30-32.
[13]	WAN Zhiyong. Reason analysis on the abruptly dropping of vacuum degree in the process of vacuum pump switching and its countermeasures [J]. Huadian Technology, 2016, 38(5): 52-53.
[14]	HAN Lina, LI Shaogang, WANG Gang. Energysaving transformation measures of steam condenser vacuum system [J]. Huadian Technology, 2016, 38(5): 70-73.
[15]	HUANG Taiming. Optimization of vacuum pump operation mode of 600MW unit [J]. Huadian Technology, 2015, 37(7): 24-26.

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

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments