High Side Voltage Controller to Improve Performance and Voltage Stability of a Power System

Abstract

This paper describes a high side voltage controller (HSVC) design, implementation and performance study for a synchronous generating unit connected to an infinite bus power system via a transformer and a double-circuit transmission line. In addition to enhance the system performance, the HSVC can improve power system voltage stability by adding supplemental control to conventional generator excitation system. The simulation results using detailed nonlinear model for the system with: a conventional automatic voltage regulator (AVR), power system stabilizer (PSS), and applying HSVC, are obtained. These results illustrate the superiority of HSVC to enhance the system performance as well as its voltage stability when subjected to different disturbances.