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孫天明,姜相熙 明知大學校 産業技術硏究所 2003 産業技術硏究所論文集 Vol.22 No.-
Abstract - Distance relays need accurate current and voltage for determining the trip ignition. Therefore we must analyze nonlinear phenomena which cause distortion in signals first of all. This paper presents the effect of current transformer saturation in power system. The saturation of a current transformer distorts the input current of a distance relay. This paper describes modeling methods of a current transformer, simulation results of two distance relay algorithms (discrete fourier transform and modified differential equation methods) and some interesting results of the algorithm by using an CT secondary current compensating technique.