New Modeling of SSSC and UPFC for Power Flow Study and Reduce Power Losses
C. Anitha1, P. Arul2
1C.Anitha, Department of Electrical and Electronics Engineering, Jayaram College of engineering and technology, Trichy, India.
2Prof.P.Arul, Working as Associate Professor in Department of Electrical and Electronics Engineering, Jayaram College of Engineering and Technology, Trichy, India.

Manuscript received on October 05, 2013. | Revised Manuscript received on October 2013 11, 2013. | Manuscript published on October 15, 2013. | PP: 7-11 | Volume-1 Issue-11, October 2013. | Retrieval Number: K04931011113/2013©BEIESP

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Abstract: Reactive power control is the basic requirement for maintaining the voltage stability of the interconnected power system. The transmission line losses are due to energy dissipated in the conductors, equipment used for transmission Line, Transformer, sub- transmission Line and distribution Line and magnetic losses in transformers. A transmission line loss includes conductor loss, radiation loss, dielectric heating loss, coupling and corona.. The placement of FACTS can help to reduce flows in heavily loaded lines, reduce power system loss and improve the system stability. Static Synchronous series compensator (SSSC) can increase or decrease the overall reactive voltage drop across the line and thereby controlling the transmitted electric power. Unified Power Flow Controller (UPFC) is a shunt and series device connected with the transmission line to improve voltage stability, and reduce the transmission losses. In this work, the Newton Raphson iterative algorithm was adopted due to its ability to converge after a few iterations. Simulation of power flow solutions without and with SSSC was done using MATLAB based program. The model is validated on IEEE 30-bus system.
Keywords: FACTS, Power flow, SSSC (Static Synchronous series compensator), Transmission system, UPFC (Unified Power Flow Controller), Voltage stability.