UHV transformer is an important device in power system. Transformer explosions happen frequently, and most of them will cause fire, which will cause serious economic loss and casualty risk. There is no relative authoritative engineering solution to transformer explosion accident. Aiming at this problem, this paper puts forward the idea of anti-explosion and pressure relief balanced design of UHV transformer, and gives the design scheme of pressure relief device which supports the balanced design. In the numerical simulation, the common explosion condition is considered and the structural responses of transformer box is obtained. According to the responses, the layout suggestion of the pressure relief device is given, and the design scheme of the device is improved.
Power transformer is the key equipment in the power system. In recent years, transformer explosion occurred frequently, most of which caused fire and resulted in heavy losses. Research in this field is still in the initial stage. To analyze the anti-explosion performance of transformers, an equivalent load model for transformer arc fault is firstly proposed in this paper, and the relevant numerical simulation is carried out. Fluid-structure interaction is considered in the numerical simulation, and finally the load distribution field and the structural response characteristics of the transformer are obtained for two typical arc fault locations.
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