Journal
IEEE ACCESS
Volume 9, Issue -, Pages 71461-71469Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2021.3078759
Keywords
Mathematical model; Oil insulation; Load modeling; Oils; Power transformer insulation; Windings; Temperature measurement; Transformer; hotspot temperature; transformer faults; thermal model
Categories
Funding
- United States Agency for International Development (USAID) through the Applied Research Program
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The paper presents a comparative analysis of different thermal models for predicting the hotspot temperature and top oil temperature of power transformers, as well as proposes a new thermal model for monitoring transformer operation in real-time. The model is experimentally validated and found to be in good agreement with actual field data.
The prediction and determination of thermal response for the metallic parts is a very crucial step in the design of power transformers. This paper presents a comparative analysis of different thermal models for predicting the hotspot temperature and top oil temperature of power transformers. Also, a new thermal model is proposed for the monitoring of transformer operation which is capable of identifying the hotspot temperature and the top oil temperature by taking into account the ambient temperature and the load variation with respect to real time. The model is experimentally validated and compared with the actual field data. It is found that results obtained from the proposed model and the actual field data are in good agreement.
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