ANALYSIS OF THERMAL TRANSIENTS IN THE WINDINGS AND THE OIL OF A POWER TRANSFORMER AND A METHOD FOR TEMPERATURE MEASUREMENT OF WINDINGS
Journal Title: Енергетика і автоматика - Year 2018, Vol 0, Issue 6
Abstract
When diagnosing the thermal modes of power transformers, the temperature of the windings is required. Modern methods of diagnosing transformers assume control of the winding temperature by measuring the resistance of the windings. Also, in order to diagnose the isolation state, equipment is used which allows the chemical analysis of the transformer oil to be judged about the degree of wear of the insulating structure The purpose of the study is to analyze the thermal transition processes in the windings and oil of the power transformer and to develop a device for measuring the temperature of the windings of the power transformer. An indirect way of controlling the temperature of the windings of a power transformer by measuring the temperature of the upper layers of oil and the multiplicity of the electric current is proposed. A comparative analysis of thermal transient processes of windings and oils of a power transformer has been carried out. A mathematical model for calculating the temperature of windings through oil temperature of a transformer was developed and on its basis a structural scheme of the device for measuring the temperature of the windings of the power transformer was developed.
Authors and Affiliations
А. А. Стребков, А. Ю. Вовк, С. А. Квитка
Keywords
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