MITIGATION OF VOLTAGE STABILITY AND POWER FLOW CONTROL USING DISTRIBUTED POWER FLOW CONTROLLER

Abstract

This paper presents an approach to assess the benefits of FACTS devices, which are effective in controlling the bus voltage, active and reactive power flow through transmission lines. The new FACTS device DPFC (Distributed Power Flow Controller), derived from UPFC, has high controlling capability and high reliability at a lower cost. Within DPFC, by eliminating the dc common link between shunt and series converter, the active and reactive power exchange is accomplished by the third harmonic frequency for controlling capability. The D-FACTS concepts are employed by a small multiple in-dependent single-phase series converter for system reliability at low cost and also improves the power quality. As UPFC, the DPFC too has a controlling capability of power system parameters as line impedance, the transmission angle and the bus voltage. This DPFC system was simulated in the MATLAB/SIMULINK environment and the simulation results are also shown.