Enhancement and Efficiency Improvement the Power Systems by using Unified Power Flow Controller

This paper deals with power quality improvement by using Unified Power Flow Controller, which is one of the most effective devices to maintenance and reliability of the power. The Unified Power Flow Controller (UPFC) is the most widely used FACTS device to control the power flow and to optimize the system stability in the transmission line. It is used to control the power flow in the transmission systems by controlling the active power, reactive power, voltage’s magnitude and phase angle. A major aspect of this study after introducing and describing the advantages of UPFC simulate the power system that connected in a loop configuration, consists essentially of five buses B1 to B5 interconnected through three transmission lines L1, L2, L3 and two 230 kV/500 kV transformer banks Tr3 and Tr4 and two power plants located on the 230 kV system generate a total of 1500 MW which is transmitted to a 230 kV, 15000 MVA equivalent and to a 500 MW load connected at bus B3 also the 400 MW resistive load connected to B2, by MATLAB/SIMULINK SIMPOWERSYSTEM software. Once after the simulation the power system with and without UPFC and comparing a result of both conditions, we can observe the improvement the active power, reactive power, and voltage magnitude by using Unified Power Flow Controller that.

کلیدواژه ها:

FACTS devices ، Unified Power Flow Controller ، Objective function ، Equality.