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Research on Pressure Relief Technology of Main Transformer in 220KV Indoor Substation

Most indoor substations adopt oil-immersed transformers as voltage transformation device. In multiple disadvantage conditions, the flammable gases formed form transformer oil may explode in transformer room. Typical 220kV main transformer room of indoor substation was researched in this paper. An correlation of pressure relief area of the 220kV mail transformer room of indoor substation were presented based on the CFD tool FLACS modeling of the general designing schemes of the State Grid Corporation of China. This research may be used as reference of the pressure relief technology for main transformer rooms of indoor substations.