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Equivalent heat circuit based power transformer thermal model

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3 Author(s)
W. H. Tang ; Dept. of Electr. Eng. & Electron., Liverpool Univ., UK ; Q. H. Wu ; Z. J. Richardson

An equivalent heat circuit based thermal model of oil-immersed power transformers and a methodology for model construction using intelligent learning based on real-world data are presented. The proposed thermal model is established to calculate the real-time temperatures of the main parts of a natural oil, natural air (ONAN) and forced oil, forced air (OFAF) cooled power transformer, which is based on the principles of heat exchange and electric circuit laws. A genetic algorithm is used as a search method, based on a few onsite measurements, to determine the thermal model parameters.

Published in:

IEE Proceedings - Electric Power Applications  (Volume:149 ,  Issue: 2 )