Optimal allocation method of shared energy storage in multienergy coupled microgrid with carbon emission constraint considering dual uncertainty of source and load

Abstract

Abstract In order to realize the stable operation of the multienergy coupled microgrid under the low-carbon constraint, a carbon emission constrained multienergy coupled microgrid shared energy storage optimization configuration method considering the dual uncertainty of source and load is proposed. This method constructs a source load double uncertainty and carbon emission model, and it analyzes the output characteristics and load demand characteristics of multiple coupled energy sources and the carbon emission results under these characteristics. According to the analysis results, the multienergy coupling microgrid shared energy storage optimization configuration model is constructed, and after the optimization configuration objective function and constraint conditions are determined, the bat algorithm is used to solve it, and the microgrid shared energy storage optimization configuration scheme that meets the objective function and constraint conditions is obtained. The test results show that after the method is applied, the utilization rate of multi-energy sources reaches 90.6%, and the expected carbon emissions are lower than 2.04 × 104kg. The microgrid fluctuation suppression rate reached 92.7%, and the net load fluctuation range was significantly reduced. Thus, it ensures reliable power supply of the microgrid and has good applicability.