Simulation Study on Fire Combustion Process of Oil Immersed Transformer

As an important part of the power system, oil-immersed transformers have a complex structure with a large oil storage capacity and a high-risk factor. The fire simulation software PyroSim was used to simulate the burning process of oil-immersed transformers under different fire scenarios, in order to investigate the vulnerability of oil-immersed transformer oil to fire. Surface according to simulation results: burning oil from oilimmersed transformers tends to form a fire plume and ignite other components such as transformer bushings. The ambient wind speed where the fire is located has a large effect on the spread of the fire's flames; the different rates of heat release from the fire source have little effect on the flames, but have a large effect on the overall process of fire development. The corresponding components therefore need to be protected against fire and the transformer insulating oil needs to be tested regularly.