Oscillation Damping with DPFC Using Optimization Techniques

Abstract

Low frequency oscillations are the major problem in power system. To magnify the power system stability, new FACTS device is introduced i.e. Distributed Power Flow Controller (DPFC) for damping the low frequency electro-mechanical oscillations. DPFC works on the theory of D-FACTS (distributed FACTS). It is modified form of Unified Power Flow Controller (UPFC) with removal of common DC link in UPFC. In this paper, optimal design problem is solved using Genetic Algorithm (GA) and Differential Evolution (DE) algorithm to optimize the damping controller parameters. Results shows that DPFC employed with DE algorithm improves the stability more effectively compared with GA.