Analysis about an event of protective action of generatortransformer protection

Huadian Technology ›› 2009, Vol. 31 ›› Issue (11): 69-71.

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Analysis about an event of protective action of generatortransformer protection

ZHANG Qi¹, WANG Xin²

1.Guodian Nanjing Automation Corporation Limited, Nanjing 210003, China; 2. Huadian Corporation Shanxi Branch, Xian 710032, China

Received:1900-01-01 Revised:1900-01-01 Online:2009-11-25 Published:2009-11-25

Abstract

Abstract: Taking once protective action of differential protection of DGT801 digital generatortransformer protection device in a power plant 135MW unit as example, the reason of protective action of differential protection in this time was analyzed. According to the data of fault record, the action characteristics in the fault process were analyzed, and aiming at the protection action in this event, some suggestions were proposed.

Key words: generator-transformer unit, differential protection, fault record

ZHANG Qi;WANG Xin. Analysis about an event of protective action of generatortransformer protection[J]. Huadian Technology, 2009, 31(11): 69-71.

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Analysis about an event of protective action of generatortransformer protection

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