The survey of qualitative and economic analysis of the penetration level of FACTS device installation on network congestion management

In a deregulated electricity market, it may alwaysnot be possible to dispatch all of the contracted powertransactions due to congestion of the transmission corridors.The ongoing power system restructuring requires an openingof unused potentials of transmission system due toenvironmental, right-of-way and cost problems which aremajor hurdles in the expansion of power transmissionnetwork. Flexible AC transmission system (FACTS) devicescan be an alternative to reduce the flows in heavily loadedlines, resulting in an increased loadability, low system loss,improved stability of the network, reduced cost of productionand fulfilled contractual requirement by controlling the powerflows in the network. In this paper, TCPST has been used in the congestionmanagement. For optimal setting of TCPST and determining theappropriate location for the management and reduction of thetransmission lines congestion in the restructured environment, amethod based on the locational marginal price (LMP) andoptimal power flow (OPF) in combination withThyristorControlled PhaseShiftingTransformer(TCPST) is used.This method is applied on IEEE 30 bus system.Simulation results show the effect of TCPST appropriatelocating on the reduction of the total restructured power systemcosts.