The Yimin-Fengtun thyristor controlled series compensation (TCSC) syst
em that is under research will be situated at a main corridor of 500 k
V transmission system of northeast China. The TCSC will be used to inc
rease the transient stability and dynamic stability of the power syste
m. In order to adapt to the development of the transmission system, th
e design for the controller must meet the requirements of systemizatio
n and robustness. The TCSC project will be the first FACTS (flexible a
c transmission systems) project installed in the main grid of China. I
n this paper, based on the real engineering project, systematic resear
ch is done on the models of the TCSC, the control algorithms, the deve
lopment of simulation software and the implementation of the TCSC. Som
e achievements have been obtained on the studies of engineering applic
ations, control schemes, electromagnetic transient models and electrom
echanical transient models of the TCSC and software development as wel
l. (C) 1998 Elsevier Science S.A. All rights reserved.