For electromagnetic transient (EMT) simulation of a power system, a state-space-based approach needs to solve state-space EMT equations by using numerical integration methods, e.g., the Euler method, Runge-Kutta methods, and trapezoidal-rule method, at small time steps. The simulation can be slow on a power system having multiple generators. To speed up state-space-based EMT simulations, this paper proposes a Differential Transformation based semi-analytical method that repeatedly utilizes a high-order semi-analytical solution of the EMT equations at longer time steps. The proposed semi-analytical method is tested on the detailed EMT model of a four-generator two-area system. Simulation results show the significant potential of the proposed method to accelerate EMT simulations of power systems compared with traditional numerical methods.
@article{arxiv.2302.09342,
title = {Semi-Analytical Electromagnetic Transient Simulation Using Differential Transformation},
author = {Min Xiong and Rui Yao and Yang Liu and Kai Sun and Feng Qiu},
journal= {arXiv preprint arXiv:2302.09342},
year = {2023}
}