Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2002.11b
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- Pages.299-302
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- 2002
Protective Algorithm for Transformer Using Nuro-Fuzzy
뉴로-퍼지를 이용한 변기 보호 알고리즘
- Lee, Myoung-Rhun (Wonkwang University) ;
- Lee, Jong-Beom (Wonkwang University) ;
- Hong, Dong-Suk (KEPRI)
- Published : 2002.11.15
Abstract
The second harmonic component is commonly used for blocking differential relay in Power transformers. However it is difficult to distinguish between inrush and internal winding fault with differential current protective relaying. This paper proposed a new method using nuro-fuzzy. The used data in nuro-fuzzy algorithm are 3-phase primary voltage and fundamental harmonic of differential current. Various states of transformer are simulated using BCTRAN and HYSDAT of EMTP. As a result of applying the algorithm in various cases, the correct discrimination between internal winding fault and inrush performed.
Keywords