Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1997.07e
- /
- Pages.1692-1695
- /
- 1997
A Study on the New Criteria for Assessing the Insulation Deterioration of Generator Stator Winding
발전기 고정자 권선의 새로운 절연열화 판정기준 설정에 관한 연구
-
Hwang, D.H.
(KERI Generator Diagnosis Team)
;
-
Kim, Y.J.
(KERI Generator Diagnosis Team)
;
- Kim, J.B. (KERI Generator Diagnosis Team) ;
-
Jeon, J.W.
(KERI Generator Diagnosis Team)
;
- Kim, H.G. (KEPRI Power Generation Research Laboratory) ;
- Park, J.J. (KEPRI Power Generation Research Laboratory)
-
황돈하
(한국전기연구소 발전기진단연구팀)
;
-
김용주
(한국전기연구소 발전기진단연구팀)
;
- 김진봉 (한국전기연구소 발전기진단연구팀) ;
-
전정우
(한국전기연구소 발전기진단연구팀)
;
- 김희곤 (전력연구원 수화력발전연구실) ;
- 박종정 (전력연구원 수화력발전연구실)
- Published : 1997.07.21
Abstract
This paper describes the relationship between the various non-destructive parameters and the breakdown voltage for the 17 kV, 300 MVA and the 22 kV, 500 MVA generators stator bars with polyester and epoxy/mica insulation respectively. Also, this study reports the results of an investigation into the factors which can assess the insulation condition of generator stator winding. Furthermore, a new parameter, Partial Discharge Index(PDI), is introduced as the valuable parameter for the assessment of insulation condition. The ratio between partial discharge increment and the stepwise voltage increment from the Discharge Inception Voltage (DIV) at the characteristic or resonant frequency band shows the close relationship between the breakdown voltage and PDI.
Keywords