A current amplitude algorithm based on half wave integration

Abstract

Abstract:

Abstract:Subsynchronous over current protection is necessary for the protection of pumped storage unit in the process of variable frequency starting.For the mal operation problem of subsynchronous over current protection in the process of variable frequency starting for Tiantang pumped storage power plant,this paper proposed a frequency independent algorithm based on half wave integration,and practical example proved that the accuracy of this algorithm is not affected by frequency.This algorithm has the advantages of wide frequency adaptation range and small harmonic wave influence.

Key words: ">Keywords:">pumped storage unit, variable frequency starting, subsynchronous over ">current protection, half ">wave integration, frequency independent algorithm

LIU Xiaobo,LIU Wanbin,DING Junjian,HU Enjun. A current amplitude algorithm based on half wave integration[J]. Huadian Technology, 2015, 37(11): 5-8.

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A current amplitude algorithm based on half wave integration

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