Design and fabrication of the degradation level monitoring sensor for power transformer insulating oil

Sunghyun Kim; Yiseok Kim; Jooran Yang; Sangjin Kwon; Sekwang Park

doi:10.1117/12.647442

5 January 2006 Design and fabrication of the degradation level monitoring sensor for power transformer insulating oil

Sunghyun Kim, Yiseok Kim, Jooran Yang, Sangjin Kwon, Sekwang Park

Proceedings Volume 6111, Reliability, Packaging, Testing, and Characterization of MEMS/MOEMS V; 61110U (2006) https://doi.org/10.1117/12.647442
Event: MOEMS-MEMS 2006 Micro and Nanofabrication, 2006, San Jose, California, United States

Abstract

This paper presented the method to detect the degradation level of insulation oil for transformer. Degradation of insulation oil for transformer is due to both mechanical and chemical deterioration. Metallic particle and organic material such as a dust are known as the main reason of mechanical deterioration. According to degradation and oxidation of insulation oil for the time of transformer operation, total acid number (TAN) will be increased, sludge will be appeared, and finally conductivity will be decreased. Designed sensor, which is an inter-digit capacitive type, was fabricated by using MEMS technology. Size of sensor is 9 mm (length) x 7 mm (width) x 1 mm (thickness). From the tested result, when the oil is aged, the capacitance increases and the impedance decreases. And the result shows the good proportionality with time.

Citation Download Citation

Sunghyun Kim, Yiseok Kim, Jooran Yang, Sangjin Kwon, and Sekwang Park "Design and fabrication of the degradation level monitoring sensor for power transformer insulating oil", Proc. SPIE 6111, Reliability, Packaging, Testing, and Characterization of MEMS/MOEMS V, 61110U (5 January 2006); https://doi.org/10.1117/12.647442

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