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 t hat compensates the voltage waveform distortion caused by harmonics in powe r systems. This paper presents a new approach based on the authors' previou sly presented two-level algorithm, optimal harmonic power flow (OHPF), to i nvestigate the determination of locations and sizes of APLCs: the master le vel determines the compensator/tap settings and the new APLC locations/size s; the slave level includes subproblems which involve cases of fundamental and harmonic frequencies separately. The objective is to minimize the new A PLC injection currents, the voltage distortion, and the KW losses while sat isfying the power flow equations, the harmonic power flow equations, the se curity constraints, and the harmonic standard. Test results for an 18-bus d istribution system show the applicability of the proposed method. (C) 1999 Elsevier Science S.A. All rights reserved.