Congestion Management of System with N-1 Contingency by Optimal Placement of TCSC Using PSO

Abstract

Due to deregulation in the electricity market, the whole economic market management has been changed. With the increasing demand overload and violation of line, constraint leads to the congestion, thereby threatening the security of the system. Flexible AC transmission systems (FACTS) devices are used to avoid this congestion. The N-1 contingency is considered as an outage of one branch, which also increases the congestion in the system, active and reactive losses and violation of voltages at buses. Thyristor-controlled switched capacitor (TCSC) devices are optimally planned in the system with a multi-objective approach using PSO to relieve the congestion and maintain other performances under contingency. The multi-objective function is minimized to find the optimal placement of TCSC, which includes minimizing the voltage deviation and losses. PSO is applied to find the size and location of TCSC. Also, this paper discussed the amount of harmful gases like CO2, NO2, SO2 produced in a thermal power plant, and it is calculated in term of cost. This paper discussed the techno-economical–environmental effect. In this paper, the 14-bus system is implemented in MATLAB environment with MATPOWER tool for planning with N-1 contingency. The proposed methodology based on evaluation of voltage deviation, cost and loss as the objective function is useful for the optimal placement of TCSC.