Maxwell electromagnetic simulation software is used to calculate loss of transformer winding during stable and full load operation

the resulting losses data is converted to heat load and is input into ANSYS CFX to conduct research on temperature distribution of 35 k V oil-immersed transformer windings. From two period of time of 60 min

120 min

simulation analysis on winding temperature distribution is carried out to identify the hottest spot distribution and corresponding temperature values

while transformer runs 120 min is

the hottest temperature of the transformer

the hottest spot of low voltage winding located in B phase winding is 75. 5 ℃

the hottest spot temperature of high voltage winding in the C phase winding is 65.4 ℃; the whole transformer winding temperature in the center is higher than upper and lower and prolongs working time of transformer

the transformer is increased temperature of overall temperature; overall low-voltage winding temperature of transformer is higher than high voltage winding.