Research on Electromagnetic Transient Simulation of Transformer based on Controlled Source Theory

Abstract

This paper studies the basic principle of electromagnetic transient simulation in power system, and digital simulation method, derives by the electromagnetic transient simulation model of power system components. According to component model, integrated with control principle and the damping trapezoidal integral method, it establishes the electromagnetic transient simulation model for the different connection mode of double winding transformer and three winding transformer. And it describes the solving methods of transformer electromagnetic transient simulation, adopts interior point shrinkage method for three winding transformer, which reduces the dimension of operation, improves the efficiency of simulation. Each simulation is verified by the simulated use case.