Dynamic Investigation of Hybrid Phase Shifters for Damping Power System Oscillations Studies

This paper develops dynamic investigations of Optimal Unified Power Flow Controller (OUPFC) and Hybrid Flow Controller (HFC) devices as Hybrid Phase Shifters (IIPSs) and designs the control algorithm incorporated the nonlinear power system dynamic equations in order to damping power system oscillations. An adaptive optimal control strategy for dumping power system oscillation is presented The proposed control algorithm incorporates the nonlinear power system dynamic equations. The optimization method is numerically solved using Matlab and GAMS (General Algebraic Modelling System) software environments. The solution procedure uses Mixed Integer Non Linear Programming (MINLP) and Non Linear Programming (NLP) to solve the optimal control algorithm of HFC and OUPFC controllers, respectively. The performance of the controllers is tested on a Single-Machine Infinite-Bus (SMIB) power system. Furthermore, the nonlinear simulation results show that the control strategy improves the dynamic stability and coordinated design of LIPS controller and Power System Stabilizer (PSS) improve greatly the system damping. Copyright (C) 2010 Praise Worthy Prize S.r.l. - All rights reserved.