An electromechanical/electromagnetic transient hybrid simulation method that considers asymmetric faults in an electromechanical network

This paper proposes a method to perform electromechanical and electromagnetic transient hybrid simulation, including the interface location, the mutual equivalence solution of the electromechanical system and the electromagnetic system, which can perform excellently when the positive and negative sequence parameters of the equivalent circuit are different. The least square method is adopted to obtain the fundamental frequency current as the equivalent solution of the electromagnetic system. The method was demonstrated to be effective and feasible through two cases. It solves hybrid simulation problems when variable faults (including asymmetric faults) occur in an electromechanical network.