Reducing Ferranti Effect in Transmission Lines Using STATCOM

Abstract

When there is a voltage differential concerning the sending and delivery ends of a lengthy transmission line, it is called as the Ferranti influence. Reactive power flow is caused by the transmission line's capacitance, which causes it to happen. This paper deals with the study of mitigating the Ferranti Effect in the transmission line using a FACTS device, STATCOM, which is a shunt compensation device connected to a transmission line. This study analyses the Ferranti Effect in medium and long transmission lines, i.e., different line lengths during no-load and lightly loaded conditions. With STATCOM, which is operated in both open-loop and closed-loop control systems, this abnormal effect can be lessened. The closed-loop control system enhances STATCOM's performance by managing the overvoltage at the delivery end of the transmission line, which is greater than the sending end voltage through reactive power compensation. To analyze the Ferranti effect outcomes, a transmission line with varying lengths is considered for both light load (10 MW) and no-load scenarios without STATCOM. Additionally, the voltages at the sending and receiving ends with and without a STATCOM under load. Additionally, the Ferranti effect is corrected using STATCOM after analyzing the results in light and no-loaded situations. Additionally, confirm the transmitting and receiving ends.