超大型变压器的一种数值计算方法

The Numerical Method for Supper-large Transformers

针对带有磁屏蔽的超大型变压器，其数值计算量大，常规的三维涡流电磁场数值计算方法难于应用的现象，采用位对函数和Ｂ函数相结合、数值法与解析法相结合、局部求解与整体求解相结合的原理，即用适当的剖分密度、相当于２倍于全标量位的ＣＰＵ时间而满足较高计算精度的要求，为三维涡流电磁场数值计算应用于带有磁屏蔽的超大型变压器，提供了一种实用的工程方法。

For supper-large transformers with the magnetic-shield ,this article presents the combined method.Using this method,we can satisfy the need of higher precisionwith double CPU time corresponded to one of a full- scalar-potential.The principle of themethod is:combining direct methods and undirect methods,numerical methods and analytical methods,parts computing and ensemble computing,automatic process and artifi-cial process in data- preprocessing.It is proved from the application the combined method isthe practical engineering one of 3D eddy current electric-manetic field namerical computation applied to super-large trasformers.