Improvement of Power Transfer Capability and Power System Stability using UPFC- A Technical Review

Author(s):

Prof. Nilkanth A Patel , IIET DHARMAJ; Prof. Ketul S. Kachhia, IIET DHARMAJ; Prof. Mihir R. Patel, IIET DHARMAJ; Biren H. Patel, IIET DHARMAJ

Keywords:

Level of Service, Volume, Avg. Spot Speed, Videography technique, Density, Flow

Abstract:

The present thesis is a FACTS device known as the Unified Power Flow Controller (UPFC). With its unique capability to control parallel real and reactive power flows on a transmission line as well as to regulate voltage at the bus where it impact on power system stability. These features become even more relevant knowing that the UPFC can allow loading of the transmission lines close to their thermal limits, forcing the power to flow through the desired paths. This will give the power system operators much needed flexibility in order to satisfy the requirement that the deregulated power system will impose.In this thesis the performance of UPFC is investigated in controlling the flow of power over the transmission line. This research deals with simulation of 6-bus power system using UPFC to improve the power transfer capability through a transmission line by placing UPFC at the sending end using computer simulation. When no UPFC is installed, real power, reactive power and voltage through the transmission line cannot be controlled. The circuit model for UPFC is developed using rectifier and inverter circuits. The MATLAB® simulation results are presented to validate the model. The results of network with and without using UPFC are compared in terms of active power flow and reactive power flow in the line. Also IEEE 14 bus system is implemented in PSAT so that when UPFC is connected to the weak bus then it increases the voltage stability of the weak bus.

Other Details:

Manuscript Id	:	IJSTEV2I11043
Published in	:	Volume : 2, Issue : 11
Publication Date	:	01/06/2016
Page(s)	:	88-90

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