电制氢(power to hydrogen,P2H)和天然气混氢技术在促进可再生能源消纳、降低系统碳排放量方面具有良好的理论研究和工程应用前景.面向含高比例可再生能源的园区综合能源系统,提出一种计及天然气混氢及跨季节存储的P2H优化配置方法.首先梳理了含氢园区综合能源系统的运行框架和能量流动关系,建立园区内部能源生产、转换与存储设备的数学模型;然后以设备的年化投资成本、园区综合能源系统的年度运行成本和碳交易成本最优为目标,提出P2H优化配置模型;最后通过算例分析验证文中所提模型的有效性,并比较了电解槽投资成本、混氢体积分数上限以及经济性和低碳性成本权重系数变化对规划运行结果的影响.算例结果表明文中所提模型可有效提升可再生能源消纳能力,降低系统整体经济成本和碳排放量.
Optimal configuration of P2H in the park integrated energy system considering natural gas mixed with hydrogen
The technology of power to hydrogen(P2H)and natural gas mixed hydrogen is highly regarded in theoretical research and engineering application in promoting the consumption of renewable energy and reducing carbon emissions.Targeting the park integrated energy system with high proportion renewable energy,an optimal configuration method of P2H considering natural gas mixed with hydrogen and cross seasonal storage is proposed.Firstly,the operational framework and energy flow relationship of the park integrated energy system are sorted out,and the mathematical models for the internal energy production,conversion,and storage equipment in the park are established.Secondly,a configuration model of P2H is established with the goal of optimizing the annual investment cost of equipment,the annual operating cost,and the carbon trading cost.Finally,the effectiveness of the proposed model is verified by an example analysis.The impact of changes in investment cost of electrolytic cells,the upper limit of mixed hydrogen volume fraction and cost weight coefficients of economy and low-carbon on the planned operation results are analyzed.The simulation results show that the proposed model can effectively improve the absorption capacity of renewable energy and reduce the overall economic cost and carbon emissions.
park integrated energy systempower to hydrogen(P2H)natural gas mixed with hydrogencarbon tradingcross seasonal hydrogen storagerenewable energy consumption
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维普
