Analysis of start and stop protection action caused by short circuit of PT secondary circuit

Abstract

Abstract:

Abstract:In a power plant, a short circuit fault of PT secondary loop occurred and caused the generator start and stop protection to act. Based fault seeking, fault treatment and analysis on generator stator grounding principle, it was determined that a short fault occurred in output terminals of PT secondary loop. The method to distinguish the stator primary equipment grounding fault and the secondary loop short circuit fault was given, and relevant suggestions were proposed.

Key words: Keywords:start and stop protection, PT secondary circuit, short circuit, stator grounding

YANG Qi, ZHAO Lujia, LUO Min, ZHANG Jianjie. Analysis of start and stop protection action caused by short circuit of PT secondary circuit[J]. Huadian Technology, 2015, 37(7): 40-42.

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Analysis of start and stop protection action caused by short circuit of PT secondary circuit

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