An efficient approach for incorporation with a non-linear element in a quasi static partial element equivalent circuit method in the time domain

Abstract

This paper presents an efficiency approach for incorporation with a non-linear element in the quasi-static partial element equivalent circuit method in the time domain. The proposed approach is derived from a PEEC formulation based on a modified nodal analysis. The accuracy and time efficiency of the proposed approach are investigated in comparison with a conventional approach which uses Gaussian elimination for a solution. The accuracy of the method has been validated in comparison with method of moment. As an application, the quasi-static PEEC method with the proposed approach has been employed to evaluate coordination of surge protection devices in a low voltage system. Promising accuracy and time efficiency of the proposed approach is found when it is compared with that of the conventional approach.