Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1992.07a
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- Pages.59-62
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- 1992
Digital Filter Design for Removing Exponentially Decaying DC-Offset Component from Relaying Signal
계통사고시 지수함수 형태로 감소하는 DC-Offset 성분을 계전신호에서 제거하는 Digital Filter 디자인
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Kang, Sang-Hee
(Seoul Nat'l Univ.) ;
- Kim, Nam-Ho (Kangweon Nat'l Univ.) ;
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Kang, Yong-Cheol
(Seoul Nat'l Univ.) ;
- Kim, Il-Dong (KEPCO Rearch Center) ;
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Park, Jong-Geun
(Seoul Nat'l Univ.)
- Published : 1992.07.23
Abstract
Power system fault transient signals are highly distorted due to the presence of high frequency components in the voltage and current signals and an exponentially decaying dc-offset component in the current signals. Modern protective relays have to make reliable fast decisions about the nature of a fault in the presence of such transients. To use a dc-offset removing filter makes relay algorithms much fast and reliable for detecting a fault. In this paper, several dc-offset removing filters are described, and characteristics of them are compared.
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