Güç sistemi korunması tabanlı facts kontolörlerinin gelişmiş tepkisi

The Flexible AC Transmission System (FACTS) controllers have been essentially utilized for determining different power systems steady-state, voltage improvement and performance of system protection. The features and advantages of the FACTS controllers it is suitable and necessary to be applied in the electrical power system. In this thesis, the influence of FACTS controllers will be investigated therefore tow grid system will be designed with (six-buses), the first circuit has tow step-down transformer (132/33kV, 66/33kV), the SVC control and static synchronous compensator will be added to different location of grid, such as (bus-3, bus-5and bus-6) to improve the voltage profile, angle, real power and reactive power of grid buses in power flow circuit. This study presents the effect of three cases after adding compensator and before of indictive reactance (0.20) p.u and capacitive reactance(0.50,0.60 and 0.70) p.u on results of state variable of SVC by added to(bus-3, bus-5and bus-6). The load values of the circuit will be changed gradually to determine generation and loss of power. The second circuit (132/33kV ) will be using SVC Simulink modal with 1 TCR/3TCS, to demonstrate Waveform output of voltage, current, reactive power before and after adding SVC and see the effect of three-phase of fault among lines and ground also we can say action of protection that will improve the power transfer throw transmission line. The results will be evaluated by Power System Analysis Toolbox (PSAT) also MATLAB program. Keywords: Power system protection, FACTS, Static var compensator (SVC), Static synchronous compensator, Power flow.