A Simple Model for Calculating Transformer Hot-Spot Temperature

200997 citationsJournal Article

Authors

Abstract

A simple model for calculating the hot-spot temperature is introduced. The model is based on the hot-spot to ambient gradient. The model considers the changes of the oil viscosity and winding losses with temperature. The results are compared with temperatures calculated by IEEE Annex G method and measured results at varying load for the following transformer units: 250-MVA ONAF, 400-MVA ONAF, and 605-MVA OFAF.

Topics & Keywords

Power Transformer Diagnostics and Insulation High voltage insulation and dielectric phenomena Magnetic Properties and Applications

UN Sustainable Development Goals

Affordable and clean energy

Publication Details

Published in: IEEE Transactions on Power Delivery

Volume 24, Issue 3, pp. 1257-1265

DOI: 10.1109/tpwrd.2009.2022670

Field-Weighted Citation Impact: 2.39