North China Electric Power University

Jiahao Ma

Yan Wang

Gang Liu

Jin Liu

Chunqiang Zhang

Zijian Qiu

Mingwang Xu

Yifan Yao

Bohan Pang

Mengtong Wu

Shujun Yao

Ziwen Zeng

A general decoupling method and system for electromagnetic transient simulation of a VSC are provided. The method includes: determining state equations of equivalent circuits and switch state tables of different VSCs; splitting the state equations, and decoupling and delaying capacitor elements and inductor elements to determine split equations; determining a recurrence relation of a state variable group with respect to a time sequence based on each split equation; obtaining a topological structure of a to-be-simulated VSC, and determining a decoupling model circuit; determining a switch state of the to-be-simulated VSC at a current simulation moment, and constructing a final decoupling model circuit; determining an external port voltage based on the final decoupling model circuit; and updating the state variable group at the current simulation moment based on the external port voltage and the parameters of the decoupling model circuit corresponding to the switch state.

General decoupling method and system for electromagnetic transient simulation of voltage source converter

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Beijing, China

Jiahao Ma