Application of zero-order method in electrical field optimization of ultra-high voltage transformer coil

The parametric finite element model of the ultra-high voltage transformer coil is constructed based on the ANSYS Parametric Design Language(APDL).The electrical field distribution of the transformer bottom coil is calculated and the maximum of electric field intensity is gained.In view of the parametric design of the coil structure,the zero-order optimization method is employed to optimize the electrical field of the ultra-high voltage transformer bottom coil.As a result,the maximum electrical field is greatly decreased by the zero-order optimization method.