Analysis of disconnecting switch misoperation caused by earthing of its control circuit

Huadian Technology ›› 2009, Vol. 31 ›› Issue (3): 65-66.

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Analysis of disconnecting switch misoperation caused by earthing of its control circuit

CHEN Xiaolong

Ningxia Wuzhong Power Supply Bureau, Wuzhong 751100，China

Received:1900-01-01 Revised:1900-01-01 Online:2009-03-25 Published:2009-03-25

Abstract

Abstract: Now electric disconnector were applied in all modern substations, combining with FivePrevention Interlocking System to get safety and convenience as well as relieving labor intensity, but potential safety hazards would exist if the design for the control circuit of motordriven disconnecting switch was unreasonable. The disconnecting switch misoperation was happened due to earthing of its operation circuit when the disconnecting switch was installed in a line. This case was analyzed and the solving measures were put forward in this paper.

Key words: disconnector, control circuit, short circuit, misoperation

CHEN Xiaolong. Analysis of disconnecting switch misoperation caused by earthing of its control circuit[J]. Huadian Technology, 2009, 31(3): 65-66.

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Analysis of disconnecting switch misoperation caused by earthing of its control circuit

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