Analysis on reasons of switch tripping caused by interrupt of 110V DC power source

Abstract

Abstract:

Abstract:Once, an abnormal condition of 110V DC control power source caused the switch of the standby power source of PC bus of emergency power supply to trip. The reason of the bus voltage failure was analyzed, and it was found that there are many problems in the system design and device selection of the system. The solution was put forward, and the problem, which is that the DC power supply failure causes the switch in lower level to trip incorrectly, was solved thoroughly.

Key words: Key words:interrupt of 110V DC power source, switch trip, disappearance of bus voltage, reason analysis, solution

HAN Xianghu. Analysis on reasons of switch tripping caused by interrupt of 110V DC power source[J]. Huadian Technology, 2013, 35(9): 1-3.

[1]	LI Ge1, ZHU Haibao1, WANG Jun2. Reason analysis and prevention of the burnout of boiler burner nozzle [J]. Huadian Technology, 2018, 40(2): 21-24.
[2]	ZHANG Xuehai. On line replacement of valve servo valve and the analysis of the servo valve jam of 600MW steam turbine [J]. Huadian Technology, 2016, 38(2): 35-38.
[3]	PENG Jun. Analysis and processing on fault reason of pneumatic brake system of hydropower unit No.1 in Huanglongtan Hydropower Plant [J]. Huadian Technology, 2015, 37(2): 42-43.
[4]	ZHENG Jianfeng. Analysis on reasons of higher temperature of bearing bush of horizontal shaft mixed flow water turbinegenerator unit and treatment scheme [J]. Huadian Technology, 2015, 37(1): 34-36.
[5]	FENG Yufeng. Analysis on reasons of fracture failure of main shaft of bucketwheel stackerreclaimer [J]. Huadian Technology, 2014, 36(9): 37-39.
[6]	LI Qiufeng, LIU Shuwei. Function perfecting of distributed control system of 600MW unit [J]. Huadian Technology, 2014, 36(8): 14-16.
[7]	WU Fan. Analysis on reasons caused tripping of generator reverse power protection of S109FA combined cycle unit [J]. Huadian Technology, 2014, 36(4): 57-60.
[8]	HAN Lizheng. Analysis on reasons of outoflimit vibration of water intake pump [J]. Huadian Technology, 2014, 36(11): 55-57.
[9]	YANG Feiping 1，YANG Zhu 1，TANG Zhenhua 2 . Solving scheme of water wall cracking for 600MW supercritical Wshaped flame boiler [J]. Huadian Technology, 2014, 36(1): 33-35.
[10]	XU Gang. Analysis on reason of damage of clamping bolt passing through core of generator stator and treatment method [J]. Huadian Technology, 2014, 36(1): 58-59.
[11]	JIANG Anwei. Analysis on reasons of maloperation of 500kV line sweitch and precontrol measures [J]. Huadian Technology, 2014, 36(1): 63-65.
[12]	BU Fanwei, NI Jianmin. Analysis on reasons of fault of compensation capacitor in 6kV ungrounded system [J]. Huadian Technology, 2013, 35(9): 7-8.
[13]	WANG Guilai, TANG Lu. Analysis on reasons of load shedding of 600MW generator and countermeasures  [J]. Huadian Technology, 2013, 35(9): 36-38.
[14]	GUO Hongyi. Analysis on reasons of larger quantity of slag discharge of medium speed mill in power plant and treatment [J]. Huadian Technology, 2013, 35(9): 41-43.
[15]	BU Fanwei, LIN Xiguo. Influence of overexcitation on RET316 type transformer differential protection [J]. Huadian Technology, 2013, 35(8): 31-35.

Analysis on reasons of switch tripping caused by interrupt of 110V DC power source

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments