ANALYSIS OF THERMAL PROCESSES IN OIL POWER DISTRIBUTION TRANSFORMERS

Paper deals with the analysis of thermal processes in oil power distribution transformers. By means of the mathematical analysis and experimental measurements it is possible to diagnose of distribution oil transformers in terms of mechanical strength of winding. Analysis of warming at varying loads is very importance, since allows determining the load capacity and overload of the transformer under various operating conditions and respecting the variable ambient temperature. By means of the practical test, diagnostics, measurements and subsequent analysis it was proved that thermovision plays an important role in diagnostics of power oil transformers in terms of winding mechanical strength.