Research on Electromechanical-electromagnetic Hybrid Simulation Algorithm for Large Scale Power System based on Boundary Nodes Grouping and Decoupling

摘要

An electromechanical-electromagnetic hybrid simulation algorithm based on boundary nodes grouping and decoupling is proposed in this paper. The UHV $AC/DC$ backbone network is described as electromagnetic transient models and the others are described as electromechanical transient models and power grids at low voltage side are decoupled at their boundary. A new partitioning method of backbone network based on heuristic rules is proposed to support electromagnetic transient parallel computing and a hybrid parallel simulation algorithm based on subnet groups is designed. The theoretical analysis and derivation of the algorithm shows that the algorithm can improve the efficiency of hybrid simulation with a large number of boundary nodes.