The application of a parameter variation method in calculating the electromechanical transients in an electric power system

摘要

This article presents a method for analyzing the electromechanical transients under variations in the perturbation acting on and parameters of an electric power system. The method is developed on the basis of representation of the nonlinear differential equations in the form of power series with variable coefficients. The method is used for studying the following cases. It was utilized to calculate the electromechanical transients with varying conductivity of the reactive power source in a simple power system (a variation in one parameter) and for predicting the characteristics of the electromechanical forces when two parameters are varied. Such a method enables the characteristics of transients in non-linear systems to be calculated simply and the solutions to be presented in a compressed form.