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考虑源荷不确定性的氢能微网容量优化配置

Optimized Configuration of Hydrogen-Energy Microgrid Capacity Considering Source Charge Uncertainties

  • 摘要: 针对电热气耦合微网存在的能源利用率低、鲁棒性难以控制的问题,提出考虑源荷不确定性的氢能微网容量优化配置方法。首先,利用氢储能、电锅炉和有机朗肯循环(organic Rankine cycle,ORC)系统增加传统微网的电热气转换途径,构建多能耦合、低碳高效的氢能微网;然后,提出一种基于有序聚类算法和模糊C均值(fuzzy C-means,FCM)聚类算法的电负荷-风电出力典型日选取方法,以年化总成本最小为优化目标,计及功率平衡、设备运行、储氢系统和天然气管道等约束,建立氢能微网容量优化配置模型;最后,对某工业园区的实际数据进行分析,得到系统中各设备的优化配置方案以及成本大小,并进行灵敏度分析,验证了所提模型可有效降低系统总成本、减少碳排放。

     

    Abstract: With regards to the low energy conversion efficiency and uncontrollable factors on the robustness of electrothermal gas-coupled microgrid planning due to the randomness of new energy resources, an optimization method for the configuration of hydrogen-energy microgrid is proposed considering the uncertainties of source charges. First of all, by taking advantages of hydrogen energy storage, electric boilers and organic Rankine cycle (ORC) systems to expand the electrothermal gas conversion paths of traditional microgrids, a multi-energy coupled, low-carbon and efficient hydrogen energy microgrid is set up. Then, a typical daily selection method of electrical load-wind power output based on ordered clustering algorithm and fuzzy c-means (FCM) clustering algorithm is proposed, with the minimization of annualized total cost as the optimization objective, and by taking into account the constraints of power balance, equipment operation, hydrogen storage system and natural gas pipeline, the hydrogen energy microgrid capacity optimization configuration model is established. Finally, the actual data of an industrial park is analyzed to obtain the optimal configuration scheme and the cost of each equipment in the system. Using Matlab and Yalmip toolbox for sensitivity analysis, it is verified that the proposed method and model can effectively reduce the total cost and carbon emissions.

     

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