Improvement of the simulation method of power-system dynamics

A new method is proposed to solve the difference equations of synchronous generators and the network algebraic equations, and two new matrices M and N are introduced, which can make the alternate iterations between the difference equations and the network equations converge quickly. The calculations of matrix M and N are discussed and the convergence of this new method is also analyzed. The simulations based on 15-machine-48-bus, five-machine-24-bus and three-machine-infinite power system, have been conducted.