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http://dx.doi.org/10.4313/JKEM.2012.25.10.791

Research of Flow Velocity and BTA According to the Streaming Electrification of Vegetable Insulating Oils  

Choi, Sun-Ho (Department of Electrical Engineering, INHA University)
Bang, Jeong-Ju (Department of Electrical Engineering, INHA University)
Huh, Chang-Su (Department of Electrical Engineering, INHA University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.25, no.10, 2012 , pp. 791-797 More about this Journal
Abstract
Mineral insulating oils are an important insulating materials in oil-filled transformer. However, the mineral oil is the cause of the environmental problem. The vegetable oils are substitutes for mineral oil because of its biodegradability characteristic. As large size and high rating of the transformer increases, the losses increase at a faster rate. So insulating oil is forced circulation in the oil-filled transformer by using oil pumps. The flow electrification occurs when insulating oil was forced to be circulated. To check the flow electrification, had conducted experiments varying factors. As a result, the streaming electrification could see the changes according to flow velocity, oil temperature and insulation materials.
Keywords
Streaming electrification; Vegetable insulating oils; Benzotriazole (BTA); Reynold's number;
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