The Modelling of digital filter of CT including saturation including Saturation phenomena

포화를 고려한 CT의 디지탈 필터로의 모델링

  • Published : 1992.07.23

Abstract

Due to the fault signal containing high and/or slowly decaying dc off-set component, saturation of current transformers cause errors in reproducing secondary current and therefore, secondary current is distorted, which cause relay to maloperate. In this paper, a new method which determines whether current transfomer is saturated is proposed. By designing digital filter of current transfomer, although secondary is distorted, exact secondary current can be reproduced.

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