Cleaning of transformer oils using the electric field

Abstract

A used oil sample of KTPJO 10/27.5/023 of power transformers which are used on the railway was selected and cleaned by means of electric field. This process was carried out using a device assembled on the basis of a special scheme. Unrefined and refined oil samples were tested for electrical strength, i.e. breakdown voltage, on AID-70m and HUAZHENG (HZJQ-X1 Transformer Oil BDV Tester) dielectric testers. The results were compared and analyzed by the regression method. It was determined that the operational characteristics of the oil were improved.

Development of a simulation model for assessing the technical condition of the magnetic circuit of oil power transformers by measuring the temperature of the tank and the external environment

“…Replacing or repairing a transformer requires significant financial and time costs [6][7][8][9][10][11][12]. Diagnostics allows you to optimize costs and extend the service life of equipment [7,[14][15][16]. Regularly checking the condition of the transformer helps prevent loss of efficiency due to insulation problems or other defects [4,[8][9][17][18][19][20].…”