Comparing analysis on the application of positive low power protection and programmable reverse power protection in coal fired power unit

Abstract

Abstract:

Abstract:This paper first introduced the principle,role and electrical process of programmable trip.And then it compared the differences of positive low power protection and reverse power protection for programmable trip on the aspects of logical configuration,role,trip mode and special working conditions such as load rejection.After that,it highlighted the differences of the two protection modes during load rejection
period and pointed out the feasibility and advantages of the application of positive low power protection in coal fired power unit.At last,it proposed the setting principle of positive low power protection and verified its action logic combining with engineering example.

Key words: ">Keywords:">coal ">fired power unit, positive low power protection, programmable trip, reverse power protection, setting principle

LI Yi,ZHANG Xiaohong,HE Xinlin,WANG Zhigao. Comparing analysis on the application of positive low power protection and programmable reverse power protection in coal fired power unit[J]. Huadian Technology, 2015, 37(11): 22-24.

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Comparing analysis on the application of positive low power protection and programmable reverse power protection in coal fired power unit

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