Multi-port Macromodeling Method of Thin-wire ...

A multi-port macromodeling method of the thin-wire structure system is proposed in this paper. In this method, the impedance and the admittance of the conductors are calculated using the partial element equivalent circuit (PEEC) method and the node voltage equation is achieved based on the node voltage method. In order to reduce the order of the model, the open-circuit suppression method is adopted. Making use of the vector fitting (VF) method and backward difference method, a time domain solution is achieved. The proposed method is validated by comparing its results with the calculated or measured ones published in other papers. Finally, an application about the direct lightning overvoltage in high-speed railway system is implemented.