IMPACT OF THYRISTOR CONTROLLED PHASE ANGLE REGULATOR ON POWER FLOW

Due to increased loading or severe faults in power system results into stressed power system, it will arise the situation in which system does not remains in secure operating region. Therefore, it is the first aim to make methodology to bring power system again into secure operating region. If there will be an unavailability of proper methodology to bring the system into secure region it leads to unstable power system. Similarly in power system the severe faults results into voltage collapse and it decreases the voltage limits which leads overloading of lines. This condition can be overcome by two options i.e. by reconstruction of power system or adjusting the line parameters. In modern days Flexible AC Transmission System (FACTS) are used which controls different parameters of the power system and makes power system stable & improves its performance. Among the FACTS devices the Thyristor Controlled Phase Angle Regulator (TCPAR) plays an important role in increasing load ability of power system. In this paper, we are concentrating mainly on the TCPAR characteristics i.e. which controls the power flow in transmission line by regulating the phase angle of the bus voltage. This can be done firstly by determining the optimal location of TCPAR device in IEEE-14 bus system. Thus by OPF results in MATLAB the effect of injecting TCPAR in system can be studied.