Optimal Location-Allocation of TCSC Devices on a Transmission Network

Installing a thyristor controlled series capacitor (TCSC) device on a transmission network reduces network congestion and generation cost. We formulate the TCSC location-allocation problem as a mixed integer nonlinear program, and propose a novel decomposition procedure for determining the optimal location of TCSCs and their respective size for a network. The load uncertainty, AC characteristic of transmission lines, and nonlinear cost of TCSCs explicitly are considered. The results of applying the procedure to the IEEE 118-bus test system are reported, and insights into the TCSC location-allocation problem are provided.