Research on Simulation and Calculation of Temperature Field and Pressure of High Voltage Transformer

Abstract

In order to ensure the normal and safe operation of high-voltage transformers, this paper uses oil-immersed current transformers as an example to use finite element analysis to simulate the internal temperature field of high-voltage transformers when a fault occurs, and obtain the temperature distribution of the whole body under several typical fault types. Through theoretical calculations, the pressure change at the expander on the top of the high-voltage transformer is obtained. The measured data is compared with the simulation calculation results, and the state of the high-voltage transformer at the time of failure is analyzed, and the safe and controllable temperature and pressure range of the high-voltage transformer are obtained.