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A Study on the Safty Diagnosis and Evaluation of Oil-immersed Transformer using fuzzy Algorithm  

Kim, Young-Il (대림대 전기과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers P / v.55, no.4, 2006 , pp. 190-195 More about this Journal
Abstract
In this paper, safety algorithm of transformer is introduced for the sake of MV/LV distribution customers by using fuzzy theory. The current-carrying capacity of transformer is usually determined by the maximum temperature at which the transformer is permitted to operate. Overload of transformer has an effect on transformer utilization rate and maximum temperature rises as well as maximum ambient temperature of insulating materials. Therefore, we proposed the safety algorithm considering the overload of transformer and ambient temperature in this paper. We introduced the correlational equations between each parameters using experimental data of IEEE std C57.91-1995, and deduced the result using fuzzy reasoning. We guessed the safety algorithm making a diagnosis for the safety status of oil-immersed transformer.
Keywords
Maximum temperature rises; Fuzzy reasoning; Safety algorithm; Loss of life;
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  • Reference
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