대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2001년도 춘계학술대회 논문집 전력기술부문
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- Pages.38-41
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- 2001
DC-offset 영향을 최소화한 변압기보호 디지털 비율차동 계전알고리즘 구현
A Digital Current Differential Transformer Protecion Algorithm Minimizing the Effect of DC-offset
- Kwon, Young-Jin (Myongji University) ;
- Kang, Sang-Hee (Myongji University) ;
- Lee, Seeng-Jae (Myongji University) ;
- Jung, Sung-Kyo (Xelpower)
- 발행 : 2001.05.11
초록
This paper presents a digital current differential protection algorithm for a transformer in power system. This algorithm uses an FIR filter to improve the performance of the relay. This paper presents a practical method setting the operating slope of the relay and reduce ct mismatch. A series of EMTP simulation results have shown effectiveness of the algorithm under various type of transformers and conditions.
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