Optimal Placement of Rotary Hybrid Flow Controller (RHFC) Considering Operational Management of Power Systems

This paper presents a hybrid configuration of FACTS controller named Rotary Hybrid Flow Controller (RHFC) which seeks to improve both steady state and dynamic conditions. The RHFC is comprised of a Rotary Phase-Shifiing Transformer (RPST), a multimodule Thyristor-Switched Series Capacitor (TSSC), a multimodule Thyristor-Switched Series Reactor (TSSR) and a Mechanically-switched Shunt Capacitor (MSC). The RHFC provides series compensation and phase shifting simultaneously by injecting a series voltage into the transmission line. In this paper the steady state model of RHFC is developed as a power injection model. This model is used to develop an Optimal Power Flow (OPF) algorithm including RHFC to find the optimal location and settings of RHFC to optimize the total fuel cost, power losses and system loadability. Also, a quantitative comparison of RHFC with PST and UPFC is investigated The optimal location and OPF results are presented for the IEEE 14-, 30-, 118-bus systems. The simulation results demonstrate the effectiveness of RHFC to control power flow and improve the optimization goals. Furthermore, the simulations are implemented in Matlab and General Algebraic Modelling System (GAMS) softwares. Copyright (C) 2011 Praise Worthy Prize S.r.l. - All rights reserved.