Optimal distributed generation location and sizing for loss minimization and voltage profile optimization using ant colony algorithm

摘要

A system of power generation whereby the generating equipment is located close to the point of usage, thereby reducinglosses and operation cost is called distributed generation (DG). However, it is imperative that DGs are sited such that thequality of power delivered is optimized and the total real power loss within the system minimized. This paper proposesan approach for optimum sizing and siting of DGs sizing in a power distribution system using Ant Colony Optimization(ACO) algorithm. To validate the algorithm the IEEE 30 bus standard test system was employed. A 92% decrease in realpower loss within the system relative to the value before the connection of DGs was observed, while the minimum busvoltage increased from 0.656 per unit to 0.965 per unit. The results obtained from ACO are further verified by creatingan ETAP model of the IEEE 30 bus system and simulating the impact of DG on the system. A significant reduction in totalreal power losses within the system and improvement in voltage profile was observed when the DGs are placed at theACO derived sites relative to at other locations. Therefore, Ant Colony Algorithm can be used in deriving the optimumsites and sizes of DGs in a power distribution system.