Efficient Modeling of UPFC Controlling in 500 kV / 100 MVA Transmission Line Power Flow

Abstract

This paper presents the unified power flow controller (UPFC) in 500 kV / 100 MVA transmission line which is a converter of voltage sources depend on supple AC systems for series and shunt improvement between multi substation transmission. Full model comprises the 48 pulses gate thyristors which is constructed to become digitalized forms of simulations system to investigate the dynamics operations of control design. Two series and shunt voltage source controller for reactive and active power improvements with voltage stabilizing in electric grids networks. The comprehensive digital simulations of voltage source operation in shunt condition is statically synchronizes the compensator of STATCOM controller of the voltage at the buses and series operation as static series capacitors SSSC control inject voltages. Kept injected voltages in quadrature and current inside power systems is achieved in MATLAB/SIMULINK block sets by means of power systems blocks. The structure of UPFC controller and electric grids networks has been modeled through specific block from power systems. The controlling of shunt with 2-series voltage sources remain in this work depend on the decouple currents controller scenarios. The model scheme behavioral connects to 500 kV grid to examine and evaluated the suggested techniques. The results of simulation provide important increasing in power flow speed compared with other approaches which reveal the UPFC devices has excellent capability to enhance the reactive and real power flows.