Optimal location and sizing of renewable distributed generators (DG) in enugu distribution network

Abstract

This paper addresses the traditional problem of optimal location and sizing of renewable Distributed generators (DGs) in radial distribution networks. Numerous optimization techniques have been used by several researchers to establish the optimal placement and sizing of DGs to alleviate the power loss in the system. However, in terms of the reduction of active power loss, the performance of these algorithms are weaker. The premature convergence, the precision of the output, and the complexity are a few major drawbacks of these optimization techniques. Therefore, this paper proposes a non-linear optimization technique for the determination of the optimal locations and sizes of DGs with the objective of active power loss and operation cost minimization. To solve this model, General Algebraic Modeling System (GAMS) software was employed in conjunction with the IPOPT solver. A 26-bus Enugu distribution network was used to model the efficiency of the proposed method. The obtained results from optimal placement of DGs shows a reduction in power losses, improved voltage profile and reduced cost of operation of the network.