Optimal Placement of TCSC for Transmission Congestion Management Using Hybrid Optimization Approach

In a competitive power market, the task of an independent system operator (ISO) is to ensure full dispatches of the contracted power are carried out reliably. However, if it threatens the system security then ISO makes decision on the re-dispatch of the contracted power i.e., Congestion Management. This paper proposes an optimal congestion management approach in a deregulated electricity market using optimal location of TCSC. Sensitivity factors are used to find the optimal location TCSC. After placing TCSC the investment cost of TCSC and generator rescheduling cost is minimized using Particle Swarm Optimization (PSO) and Particle Swarm optimization with Time Varying Acceleration Co- efficient (PSO-TVAC). Numerical results on test system, IEEE 30 bus system is presented for illustration purpose and the results are compared with Particle swarm optimization (PSO) in terms of solution quality. The comprehensive experimental results prove that the PSO-TVAC is one among the challenging optimization methods which is indeed capable of obtaining higher quality solutions for the proposed problem.