Active power line conditioner planning using an enhanced optimal harmonic power flow method

The active power Line conditioner (APLC) is a type of active power filter that compensates the voltage waveform distortion caused by harmonics in power systems. This paper presents a new approach based on the authors' previously presented two-level algorithm, optimal harmonic power flow (OHPF), to investigate the determination of locations and sizes of APLCs: the master level determines the compensator/tap settings and the new APLC locations/sizes; the slave level includes subproblems which involve cases of fundamental and harmonic frequencies separately. The objective is to minimize the new APLC injection currents, the voltage distortion, and the KW losses while satisfying the power flow equations, the harmonic power flow equations, the security constraints, and the harmonic standard. Test results for an 18-bus distribution system show the applicability of the proposed method. (C) 1999 Elsevier Science S.A. All rights reserved.