Transient stability enhancement and voltage regulation in SMIB power system using SVC with PI controller

Nowadays, the stability of power systems becomes a crucial research subject and it is very important issue for large scale systems. The transient stability of a long transmission system can be significantly realized by the excitation systems control using generally an automatic voltage regulator (AVR) and a power system stabilizer (PSS). In this paper, the improvement of the power system stability and the voltage regulation are ensured by this controllers with a static VAR compensator (SVC) with a Proportional Integral (PI) auxiliary controller. This device is installed in the middle of the power system transmission line. The effectiveness and the robustness of the proposed method are shown by simulation results which are compared under a three phase short-circuit.