Studies are made on the problem of high losses,high temperature rise,and minor limit output capacity of potential transformer in substation.In order to reduce losses and increase the maximum capacity,magnetic domain refined oriented silicon steel material is used as the iron core of the voltage transformer,and the optimization design is carried out by increasing the wire diameter of the high-voltage winding.A three-dimensional finite element model of the potential transformer is established for simulation verification,the results show that after optimizing the core material of the voltage transformer,the core loss decreases by 77%,the winding loss decreases by 5%,the core hot spot temperature decreases by 28%,and the winding hot spot temperature decreases by 9%,energy loss is reduced.The maximum capacity has been increased from 600 V·A to 1000 V·A,and the current density has decreased by 20%.The rationality of optimized design has been verified and it is able to provide a reference for subsequent engineering applications.
finite element methodpotential transformeroptimization of designoriented silicon steel
万方数据
维普
