Comprehensive evaluation of distributed energy system in rural areas based on combinatorial empowerment method

To evaluate the comprehensive benefits of the distributed energy system in rural areas, this study establishes the evaluation indexes for a distributed energy system project about energy saving, economy and environment, and proposes a subjective and objective combinatorial empowerment method combining the analytic hierarchy process (AHP) method with the entropy method. The multi-criteria comprehensive evaluation model of the technique for order preference by similarity to an ideal solution（TOPSIS） method based on the combinatorial empowerment method is established and the comprehensive benefits of operation strategies are ranked. The results show that the weight ratio of economic indicators in the evaluation index is 0.415 2, and rural areas need to consider the economy of the system first when determining the operation plan of the distributed energy system. The comprehensive benefit of the distributed energy system with biogas as fuel system is better than that of natural gas, and biogas should be used as the fuel of the energy supply system in rural areas with relatively rich biomass energy.