Optimal Access Point and Capacity of Distributed Generators in Radial Distribution Systems for Loss Minimization Including Load Models

摘要

Distributed generation (DG) sources are predicated to play major role in distribution systems due to the demand growth for electrical energy. Location and sizing of DG sources found to be important on the system losses and voltage stability in a distribution network. This article proposes, an approach to determine the optimal sizing of multiple distributed generators in radial distribution system at unspecified power factor considering different load models. It is shown that load models can significantly affect the optimal sizing of DG units in radial distribution systems. The prior objective is to minimize network power losses hence to improve the voltage profile. Various optimization techniques are applied on the objective function. A detailed performance analysis is carried out on 38-bus radial distribution systems to demonstrate the effectiveness of the proposed techniques. Performing multiple power flow analysis on 38-bus system, the effect of DG sources on the most sensitive buses to voltage collapse is also carried out.