Optimum Location of TCSC by Sensitivity Factor Analysis for Congestion Management

Abstract

Due to deregulation of electric market transmission congestion occurs due insufficient transmission capacity to accommodate all constraints for transmission of a line. FACTS devices such as Gate Controlled Series Capacitor and Thyristor Control Series Compensator can help to reduce the flow in heavily loaded lines by controlling the power flow in the network. It increases the load ability of the network and reduces the cost of production. Congestion management using series connected FACTS devices can be done in two steps. First, find the optimal location of FACTS device and second, optimize the setting of the control parameter of FACTS device. Three methods to determine the optimal location of series connected FACTS device are discussed in this paper. The approach is based on sensitivity of line loss, total system loss and real power flow performance index. The proposed method has been demonstrated on 9-bus system in MATLAB programming as well as SIMULINK.