A Study on the selection of digital filter for an artificial intelligent relay

지능형 보호계전기를 위한 최적 디지탈필터의 선정에 관한 연구

The role of protective relaying system is important in the power system stability and reliability. Conventional relaying schemes have had many problems that adaptiveness for delicate variance of objective power systems is poor, and so on. In these days, in order to overcome the weaknesses, the studies to application of artificial intelligent scheme are required. In this paper, as the preceding research for development of intelligent protective relays, we tried to select the most suitable digital filter using comparison of frequency response and performance of wanted frequency component extraction etc.