Active Distribution System Expansion Planning Using Lion Pride Optimization Algorithm

Abstract

Distribution expansion planning (DEP) is considered as one of the main challenges of distribution companies. The DEP problem deals with the optimal expansion of distribution equipment and network. Considering the number of parameters and decision-making variables, and also the complexity of modeling have made the solution of this problem very difficult and complicated. This study proposes a novel approach to solve the DEP problem, where distributed generation (DG) resources are also incorporated into the distribution system. The purpose of this paper is to meet economic and operational requirements using DGs as candidate equipment for expansion of distribution system in order to avoid uncertainties of substations and feeders expansion. In order to have a more precise simulation, the type of DG must be specified. This, in this study, the solid oxide fuel cell (SOFC) technology is utilized as a DG. In order to achieve the optimum solution, the lion pride optimization algorithm searches the solution space considering the solution of backward-forward sweep load flow problem for two modes of with and without integration of DGs in 30-bus test system. The results of simulations imply that the voltage profiles of the system are improved and the total expansion cost is also mitigated.