Analysis and control of Yimin–Fengtun 500 kV TCSC system

Abstract The Yimin–Fengtun thyristor controlled series compensation (TCSC) system that is under research will be situated at a main corridor of 500 kV transmission system of northeast China. The TCSC will be used to increase the transient stability and dynamic stability of the power system. In order to adapt to the development of the transmission system, the design for the controller must meet the requirements of systemization and robustness. The TCSC project will be the first FACTS (flexible ac transmission systems) project installed in the main grid of China. In this paper, based on the real engineering project, systematic research is done on the models of the TCSC, the control algorithms, the development of simulation software and the implementation of the TCSC. Some achievements have been obtained on the studies of engineering applications, control schemes, electromagnetic transient models and electromechanical transient models of the TCSC and software development as well.