Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2004.11d
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- Pages.89-92
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- 2004
Analysis on the Diagnosis Characteristics of Electrical Insulating Oil for Power Transformer with 3-terminal Capacitive Sensor
3전극형 전기용량 센서를 이용한 변압기 절연유의 열화감지특성 평가
- Kim, Ju-Han (Chungnam National University) ;
- Seo, Pan-Seok (Chungnam National University) ;
- Kim, Pil-Hwan (Chungnam National University) ;
- Kim, Myung-Hwan (Chungnam National University) ;
- Park, Hung-Seok (Chungnam National University) ;
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Han, Sang-Ok
(Chungnam National University)
- Published : 2004.11.12
Abstract
This paper described the capacitive sensor for the diagnosis of deterioration of electrical insulating oils applying guard-ring type the 3-terminal electrodes. To measure stable capacitance of the sensor and to determine the design factors of the sensor, we utilized computational analysis, FEM software. This capacitive sensor discern the extent of deterioration measuring relative permittivity of electrical insulating oils. The result of measuring numerous sample, mineral oils, as serviced year, we confirmed an increase in relative permittivity of oils. Moreover, we confirmed the superior characteristics of the sensor as a species, aged pattern of oils and operating temperature.
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