For further improvement of power supply quality of load at rural distribution grid with help of the advantage of near power supply of distributed generators and as for the issue of optimization configuration of distributed generators in rural distribution grid

the multiple objective optimization configuration mode with comprehensive consideration of the construction and operation cost of the distribution power and loss of rural grid is established in this paper. A kind of the firefly optimization algorithm based on adaptive step strategy for the optimization configuration of distributed generators of rural distribution grid is proposed and the best configuration proposal is selected from earlier optimization configuration pareto disaggregation by the use of fuzzy decision technology.The feasibility of the model and the effectiveness of the method are verified through simulation and analysis of distribution grid example of IEEE 33 node.