Calculation of power losses in power transformers considering the operation life
DOI:
https://doi.org/10.15802/etr.v0i10.83522Keywords:
no-load loss, power transformer, changing dynamics of loss, method of normative losses calculation, long operation termAbstract
The article deals with the problems of power loss increase in magnetic cores of power transformers that have been operated for a long time. The degree of influence of the operation life and repairs of power transformer cores on increase of the no-load losses of power is found and the analytical dependence of the changing dynamics in time of power losses value in power transformers cores of 150 kV is released. It is shown that the changing dynamics of power transformers no-load losses for the operation term is characterized by the increment, which value depends on operation term and design features. Developed and released recommendations to clarify the calculation of no-load power losses in power transformers of distribution networks, which take into account the changing dynamics of magnetic properties in transformer cores, depending on the operation term and conditions, and repairs of power transformers with disassembly of cores that will improve the accuracy of normative losses calculation in power transformers and determine the most accurate structure of losses in electric networks, that underlying energy saving measures.
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