[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5370/KIEE.2017.66.12.1745

A Study on Corona Inception Voltage and Dielectric Characteristics of Thermally Aged Mineral and Vegetable Insulation Oil in Medium Voltage Power Transformer

Jeong, Jung-Il (Dept. of Electrical Engineering, Inha University)
Huh, Chang-Su (Dept. of Electrical Engineering, Inha University)

Publication Information

The Transactions of The Korean Institute of Electrical Engineers / v.66, no.12, 2017 , pp. 1745-1750 More about this Journal

Abstract

Starting from the distribution transformer, the insulation oil for the oil immersed power transformer is being used to convert the vegetable oil from the existing mineral oil. Vegetable oil is better in temperature characteristics and insulation performance, is not toxic, and has better biodegradable characteristic than that of mineral oil. In order to investigate the corona inception voltage and dieclectic charateristics of the two insulating oils, three oil immersed transformers using mineral oil and vegetable oil were made and thermal cyclic aged. In this paper, the changes in the corona discharge inception voltage, chemical and electrical properties of the two sampled insulating oils from the transformers had been studied.

Keywords

Oil immersed transformer; Vegetable oil; Mineral oil; Corona inception voltage; AC breakdown voltage;

Citations & Related Records

Reference

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