Reactive Power Compensation plays a vital role to minimize the losses, to control the voltage and to improve the power transfer capability in a long transmission line. This paper employs the shunt connected FACTS device such as Static Var compensation (SVC) to control voltage and the power flow and also to minimize the losses in a long distance transmission line about 100Km, 200Km, 300Km & 400Km. The proposed device was used in different locations such as sending end of the transmission line, middle and receiving end of the transmission line. The PWM control strategy was used to generate the firing pulses for the controller circuit. Simulations were carried out using MATLAB Simulink environment. The suitable location and the performance of the proposed model were examined. The results were obtained with and without compensation. The simulation results reveals that the reactive power generated and injected is better at the sending end of the transmission line and it was 62.03MVAr when compared with the other ends of the transmission line and also the voltage is controlled at the sending end of the line. The line losses and the power transfer capability of the line were obtained at the midway and receiving end of the line. The results show that the line losses are reduced and the power transfer capability is better when SVC is connected at the sending end of the line. These results were shown in table 1 and 2. Henceforth the location of SVC is optimum when connected at the sending end of the line.

Full text: IJEIR_957_Final.pdf