Analysis on reasons of incorrect tripping of 600 MW unit REG670 rotator grounding protection

Abstract

Abstract: Abstract:The incorrect tripping problem of REG670 rotator grounding protection of 600MW unit in Huadian International Zouxian Power Plant was analyzed. It was excluded that the incorrect tripping may be caused by harmonic, and the actual reason of incorrect tripping was found, which is that the rated value of the analog current channel of REG670 for rotator grounding protection is selected to be 5A. The solving methods of the incorrect tripping of REG670 rotator grounding protection were proposed.

Key words: Key words:rotator, grounding protection, incorrect tripping, solving method

SUN Jing. Analysis on reasons of incorrect tripping of 600 MW unit REG670 rotator grounding protection[J]. Huadian Technology, 2013, 35(9): 39-40.

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Analysis on reasons of incorrect tripping of 600 MW unit REG670 rotator grounding protection

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