In this paper Static Synchronous Compensator

(STATCOM) is used for voltage stability and the

compensation of reactive power. The STATCOM contains an

Insulated Gate Bipolar Transistor (IGBT) based voltage

source converter for voltage control and reactive power

compensation. The STATCOM is used to control the reactive

power with the voltage source converter in combination with a

DC voltage source. The values of the DC link capacitor and

battery source were optimized using the Genetic Algorithm

technique and the simulations results for the same were

observed under the inductive as well as capacitive load

conditions. The comparison of voltage compensation for

various conditions show that the performance of STATCOM

tuned with GA was the best and closest to the nominal value of

voltage. The simulation is done in MATLAB for STATCOM

and Voltage Source Converter (VSC).