The Research of Optimal Planning for Distribution System Considering Distributed Generation

In recent years, with the development of economy and technology, the importance of distributed generation in power industry is growing. To study how to plan for power distribution system properly to meet the access demand of large distributed energy, build a distribution network system planning model including distributed generators. With the minimum of the investment costs of distribution network planning, distributed generation units' generating costs, line renovation costs, network loss costs and the electricity purchasing cost when there is a power shortage in the system as objective function, the model was solved by the application of genetic algorithm and the optimal power flow model, and the model took a nine nodes distribution network system as example to seek the optimal planning of distribution network. The results proved the effectiveness of the model and optimization algorithm.