多能互补的分布式供能系统的超结构模型及运行策略优化设计

Superstructure Model and Optimization Design of Operation Strategy for Distributed Energy System with Multiple Complementary Energy

为解决多能互补的分布式供能系统(DES)装机容量及运行策略的优化设计问题,以年总成本、一次能源消耗量及碳排放量等指标综合性能最优为目标函数,建立了一个协调能源生产、能源转换和储能等子系统中的能量流动关系和能量平衡约束等的超结构模型,并将该模型应用于某园区的DES最佳装机规模设计和逐时运行策略优化中。结果表明:与传统供能方案相比,采用该模型优化设计的多能互补的DES在经济、能耗及碳排放等指标上具有较大优势,年总能耗可节省18.05%,系统综合能源利用率可提高21.63%。

The energy flow in distributed energy system(DES) is becoming increasingly complex due to the decarbonization tendency of primary energy consumption structure and the application of energy storage technology.Aiming at solving the optimization design problem of operation strategy and installation capacity for DES with multiple complementary energy,a superstructure model is established in this paper,taking the optimal total annual cost,primary energy consumption and CO2 emission as the objective function,which can coordinate the energy flow and energy balance constraint in the subsystem such as energy generation,energy conversion and energy storage.The optimization model is applied to the design of optimum installation capacity design and hourly optimization for operation strategy in one certain park.The result shows that compared with traditional energy supply scheme,the proposed distributed energy supply scheme has great advantages in economy,energy consumption and carbon emission.The annual total energy consumption can be reduced by 18.05%,while the comprehensive energy efficiency can be improved by 21.63%.