Analysis on an abnormal voltage sag of 400V motor

Huadian Technology ›› 2018, Vol. 40 ›› Issue (1): 46-49.

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Analysis on an abnormal voltage sag of 400V motor

1.Wanneng Tongling Power Generation Company Limited, Tongling 244012，China；2.State Nuclear Power Engineering Company Limited，Shanghai 200233，China

Online:2018-01-25 Published:2018-02-07

Abstract

Abstract:

Focusing on a tripping event of a 400V auxiliary under condition of voltage sagging, analysis is made according to the operation mode and fault type, to find out the fundamental cause of the incident. Through calculating the probability of similar incidents since diverse fault, in order to improve the reliability of equipment’s operation, a modified design of 400V devices is proposed.

Key words:

voltage sag, trip, control power, fault type, probability

YE Pengzhen1，SU Xing1，ZHANG Guangyun2.

Analysis on an abnormal voltage sag of 400V motor

[J]. Huadian Technology, 2018, 40(1): 46-49.

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Analysis on an abnormal voltage sag of 400V motor

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