It is necessary to reduce CO_2 emission and improve energy efficiency saving in microgrid power generation scheduling. In this context, both cost and benefit are analyzed. Considering the CO_2 emission, the energy efficiency saving and some constraint conditions, an economic model including the power supply and fuel gas supply is provided. The model is solved by genetic algorithm. The optimization results of calculation example show that the model provided is feasible and reliable. And it can also be applied to a large-scale power grid.
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