Moth Search Optimization for Optimal Integration of DERs for Annual Energy Loss Minimization in Distribution Systems

This paper is introduced a new optimization technique, i.e. Moth Search Optimization (MSO), to solve optimal Distributed Energy Resources (DERs) integration problems of distribution systems. An optimal DER integration problem is formulated for annual energy loss minimization considering multiple distributed generations and shunt capacitors simultaneously. In order to validate the proposed MSO, initially, optimal allocation of DGs are obtained for power loss minimization of benchmark 33-bus test distribution system and simulation results are compared with well-established optimization techniques. The optimal DER allocation is also determined for minimization of annual energy loss in conjuration to node voltage deviation over three different load levels. The simulation results obtained are further compared with some of the existing optimization methods. The two-level comparison of optimization methods shows that MSO method has better searching ability to determine optimal solutions for optimal DER allocation problems of distribution systems.