대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2004년도 추계학술대회 논문집 전력기술부문
- /
- Pages.293-296
- /
- 2004
웨이브렛 변환기반 ACI 기법을 이용한 변압기 보호계전 알고리즘
Protective Relaying Algorithm for Transformer Using ACI based on Wavelet Transform
- Lee, Myoung-Rhun (Wonkwang University) ;
-
Lee, Jong-Beom
(Wonkwang University)
- 발행 : 2004.11.12
초록
This paper proposes a new protective relaying algorithm using ACI(Advanced Computational Intelligence) and wavelet transform. To organize the advanced neuro-fuzzy algorithm, it is important to select target data reflecting various transformer transient states. These data are made of changing-rates of D1 coefficient and RSM value within half cycle after fault occurrence. Subsequently, the advanced neuro-fuzzy algorithm is obtained by converging the target data. As a result of applying the advanced neuro-fuzzy algorithm, discrimination between internal fault and inrush is correctly distinguished within half cycle after fault occurrence. Accordingly, it is evaluated that the proposed algorithm can effectively protect a transformer by correcting discrimination between winding fault and inrushing state.
키워드