Negative sequence differential element
作者： Casper A. Labuschagne , Normann Fischer
DOI:
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摘要: A negative sequence differential element may detect a fault in an electrical power system by computing between values derived from first phase-current measurement and second measurement. transformer be disposed the location. The normalized current calculated therefrom. currents used to calculate operating quantity, which absolute value of sum currents, restraint quantity comprising maximum currents. scaled slope factor. detected if exceeds pickup threshold.
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