Regulating the Voltage of an Induction Generator Using STATCOM

Abstract

This paper is concerned with regulating the voltage of fixed speed induction generators (FSIG) using STATCOM for wind farm integration. Due to its highly inductive nature, the FSIG wind power system is largely affected by the absorption of the reactive power during load variations. Fixed compensation (stationary condenser bank) may fail to prevent the collapse of the voltage during severe variations. Herein, FSIG system has been developed using STATCOM to improve system stability significantly during and after disturbances. This device belongs to the family of Flexible AC Transmission System (FACTS) to regulate the effective voltage either by absorbing or generating interactive power by electronic processing of voltage and the current wave in the voltage source transformer (VSC). Compared with SVC, STATCOM gives better dynamic performance and provides better support for the voltage at the PCC. In this paper, a mathematical model of a STATCOM is derived and then simulated using Mat Lab/Simulink software. The STATCOM is also implemented practically and is used to regulate the voltage of an induction generator. The results show the great performance of the proposed system.