Optimal planning for power distribution network with distributed generation in Zanzibar Island

As a renewable energy, wind power generation has become an important development direction for power industries due to its non-pollutant and inexhaustible resource. Reliability improvement, operational cost reduction and power loss decreasing are some of the main benefits of distribution generator (DG) allocation in distribution systems. In this paper, an optimal planning model is presented for the distribution network at Zanzibar Island. The investigation of electric power demand and planning of micro-grid in Mpendae feeder has been conducted. The particle swarm algorithm was used for optimal allocation and sizing of wind distributed generator unit, so as to minimize real power loss and to improve system voltage profile. Simulation results show the effectiveness of the planning model.