Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2000.07c
- /
- Pages.1924-1926
- /
- 2000
A Study on the Characteristics of Partial Discharge Signal by Multiresolution Decomposition
다중해상도 분해에 의한 부분방전 신호의 특징에 관한 연구
- Lee, Hyui1-Dong (Yeungnam University) ;
- Kim, Chung-Nyun (Yeungnam University) ;
- Lee, Kwang-Sik (Yeungnam University) ;
- Lee, Dong-In (Yeungnam University) ;
-
Choi, Sang-Tae
(Kyong-ju University)
;
- Lee, Done-Heon (Kumi College)
- 이현동 (영남대학교 전기전자공학부) ;
- 김충년 (영남대학교 전기전자공학부) ;
- 이광식 (영남대학교 전기전자공학부) ;
- 이동인 (영남대학교 전기전자공학부) ;
-
최상태
(경주대학교 컴퓨터정보공학부)
;
- 이동헌 (구미1대학 전기과)
- Published : 2000.07.17
Abstract
This paper deals with the multiresolution analysis of wavelet transform for partial discharge(PD).PD is an electrical discharge that only partically bridges the insulation performance of electrical equipment in high voltage. PD signal is very sensitive and difficult to suppress strong noises such as narrow-band radio frequency noise and random noise. In recently, wavelet transform has become a powerful tool to analysis and process signals in various science and technology fields. In this paper, daubechies family is adopted for the research of the characteristics of PD signals. The results show that the kurtosis is increased with discharge process and skewness is decreased with discharge process, but when PD occured positive range then skewness is increased. Segment 7, 8, 9, 10, 11 values is increased with discharge process, so phase distribution is characterized by 210
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