Congestion Management by TCPST In IEEE 9 Bus System Using Matlab Simulink

Increased electric power consumption causes transmission lines to be driven close to or even beyond their transfer capacities resulting in overloaded lines and congestions. Flexible AC Transmission Systems (FACTS) provide an opportunity to resolve congestions by controlling power flows and voltages. Main focus in this paper lies on the Thyristor Controlled Phase Shift Transformer (TCPST). IEEE 9 bus system is considered for congestion management. Parameters for bus system are predefined by IEEE. Voltage and current is measured individually at each bus and in transmission line between any two congested bus, TCPST is installed. The opening and closing time of Thyristors in TCPST are controlled by PID controller. All this system is implemented and analyzed in MATLAB Simulink.