الفهرس 
Chapter 1: IntroductionOnly 14 pages are availabe for public view
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Abstract
It is well known that the automatic generation control AGC system is employed to compensate the power system load disturbances which cause power system frequency and tie-line power deviations. The conventional AGC depends essentially of mechanical speed governor system. The speed governor system is slow and it needs maintenance and change. With advent of power electronic switches, Flexible AC Transmission System FACTS devices or controllers are applied to compensate quickly the load disturbances whereupon the frequency and tie-line power deviation can be deleted. The FACTS devices are connected with power system buses or/and tie-line linking the areas of power system. The FACTS devices used in the present thesis are Static Synchronous Series Compensator SSSC and Superconducting Magnetic Energy Storage SMES. The Modeling and control system design of SSSC and SMES FACTS devices are described. The structure of SSSC involves Voltage source Inverter VSI and coupling transformer between VSI and power system. The secondary side of the SSSC coupling transformer is connected in series with tie-line between power system areas to inject source voltage of variable magnitude and phase angle. Therefore, the power flow in tie-line is controlled and regulated. The control system of SSSC device is to modulate and update the exchange power between SSSC circuit and power system to compensate the load disturbance in power system areas. However the SMES device construction is present. The VSI and energy storage coil of SMES is to absorb or inject power in power system. The SMES FACTS device is connected in shunt with area bus of power system. The control system of SMES device is described to update the active power injected to power system , whereupon , the load disturbance occurred in power system areas is compensated. The application of SSSC stabilizer for power system frequency and tie-line power stabilization due to load excursion occurred in power system. A wide range of load disturbances are applied. The studied power system is simulated using Matlab Simulink Package .The two-area power system performances with and without SSSC FACTS device in terms of area frequency deviations and tie-line power responses are obtained. A comparison between the system performances with and without SSSC stabilizer in sense of undershoot and settling time is tabulated .Further , the influence of SSSC controller control system parameters namely gain block value and time constant of SSSC block are studied . The SMES FACTS device is connected at area bus of one-area power system. The performance of one-area power system with and without SMES FACTS controller is obtained. The studied power system is simulated based on Matlab Simulink Package .The system responses in sense of frequency deviation under different load disturbances are plotted. A comparison between system responses with and without SMES device is tabulated. An application of SMES device with two-area power system is established. The two- area power system responses due to connecting SMES FACTS device are present. The effect of changing the control signal from power system to SMES controller is studied. Moreover, the two-area power system performance due to variation of SMES control system parameters in sense of gain block. A connecting of both SSSC and SMES FACTS devices in two-area power system to stabilize the area frequency and tie-line power deviations is explained. A wide range of load disturbances is applied to examine the powerful of connecting both SSSC and SMES devices. The two-area power system performance with and without both SSSC and SMES controllers are present . The area frequency and tie-line power deviations responses due to load disturbances are obtained. The all studied power system are simulated using Matlab Simulink Package.