Simulation of Static Synchronous Compensator (STATCOM) for Voltage Profile Improvement

Abstract

Voltage profile improvement is a very important aspect of power quality and system stability. Flexible A.C Transmission System (FACTS) devices have been developed to provide system stability thereby enhancing controllability and increasing the power transfer capability. Static Synchronous Compensator (STATCOM) is a member of FACTS devices used for voltage profile improvement as well as power quality improvement of the net system. In this paper, a STATCOM is simulated in Simpower Simulink of MATLAB environment for voltage regulation in a nominal π medium transmission line. The simulation results show that a STATCOM without droop is a perfect voltage regulator and follows exactly the reference voltage. When the results are compared to one with droop regulator, it was found that the sooner performs better than the later. However, the droop extends the linear operating range of the STATCOM.

Keywords—STATCOM, FACTS, power quality, voltage regulation, grid