Influence of the transient process of TCSC and MOV on power system stability

This paper presents a method of analyzing power system dynamic performance taking into account the transient processes of TCSC and metal oxidized varistor (MOV). Simulation studies of the TCSC in a simple power system are undertaken in three cases: (1) incorporating only the dynamics of the TCSC into the power system model, (2) the transient processes of both the TCSC and MOV are included, and (3) the transient process of the TCSC is ignored. The simulation results show that the influence of the transient processes of the TCSC and MOV on power system dynamic performance should be considered in studies of the TCSC control and power system stability analysis.