计及分布式可再生能源不确定性因素的综合能源系统(Integrated Energy System,IES)规划更加接近实际情况,也是实现多能协调和IES优化运行的基础。考虑光伏发电出力的间歇性和波动性,提出了一种计及不确定性的含冷、热、电、气多能流的...计及分布式可再生能源不确定性因素的综合能源系统(Integrated Energy System,IES)规划更加接近实际情况,也是实现多能协调和IES优化运行的基础。考虑光伏发电出力的间歇性和波动性,提出了一种计及不确定性的含冷、热、电、气多能流的综合能源系统容量规划模型及其求解方法。首先,为了精确地模拟光伏发电的不确定性,利用场景法描述其不确定性并运用基于Wasserstein概率距离的场景削减0-1规划模型对大量不确定性场景进行削减。在此基础上,建立以投资运行成本之和最小为目标函数的IES容量规划模型。其次,由于场景分析法难以直接得到最优规划方案,采用基于场景分析法的两阶段规划策略对此模型进行求解得到含整数变量的多能源容量规划方案。基于算例的仿真结果表明:所提出方法能够经济且可靠地满足整个规划周期内系统各节点、各类型负荷需求。展开更多
A series of supported CeO2/TiO2 catalysts were prepared to explore the influence of CeO2 loading on these catalysts for the selective catalytic reduction of NO3 by NH3(NH3-SCR).The catalysts were investigated in detai...A series of supported CeO2/TiO2 catalysts were prepared to explore the influence of CeO2 loading on these catalysts for the selective catalytic reduction of NO3 by NH3(NH3-SCR).The catalysts were investigated in detail by means of XRD,Raman,H2-TPR,NH3-TPD,XPS,in situ DRIFTS,and NH3-SCR reaction.The activity of the catalyst is closely related to the content of CeO2.When the loading of CeO2 is near the dispersion capacity(1.16 mmol Ce4+/100 m^2 TiO2),the catalytic activity is better.This may be because that the dispersed CeO2 is the active species and the catalyst has appropriate redox property,along with the larger amounts of surface Ce content and surface adsorbed oxygen species.Finally,a possible reaction mechanism via the Langmuir-Hinshelwood(L-H)mechanism is tentatively proposed to further understand the NH3-SCR reaction.展开更多
文摘计及分布式可再生能源不确定性因素的综合能源系统(Integrated Energy System,IES)规划更加接近实际情况,也是实现多能协调和IES优化运行的基础。考虑光伏发电出力的间歇性和波动性,提出了一种计及不确定性的含冷、热、电、气多能流的综合能源系统容量规划模型及其求解方法。首先,为了精确地模拟光伏发电的不确定性,利用场景法描述其不确定性并运用基于Wasserstein概率距离的场景削减0-1规划模型对大量不确定性场景进行削减。在此基础上,建立以投资运行成本之和最小为目标函数的IES容量规划模型。其次,由于场景分析法难以直接得到最优规划方案,采用基于场景分析法的两阶段规划策略对此模型进行求解得到含整数变量的多能源容量规划方案。基于算例的仿真结果表明:所提出方法能够经济且可靠地满足整个规划周期内系统各节点、各类型负荷需求。
基金Project supported by the National Natural Science Foundation of China(21773106,21677069,51674002,21307001)the Open Project Program of Jiangsu Key Laboratory of Vehicle Emissions Control(OVEC037)。
文摘A series of supported CeO2/TiO2 catalysts were prepared to explore the influence of CeO2 loading on these catalysts for the selective catalytic reduction of NO3 by NH3(NH3-SCR).The catalysts were investigated in detail by means of XRD,Raman,H2-TPR,NH3-TPD,XPS,in situ DRIFTS,and NH3-SCR reaction.The activity of the catalyst is closely related to the content of CeO2.When the loading of CeO2 is near the dispersion capacity(1.16 mmol Ce4+/100 m^2 TiO2),the catalytic activity is better.This may be because that the dispersed CeO2 is the active species and the catalyst has appropriate redox property,along with the larger amounts of surface Ce content and surface adsorbed oxygen species.Finally,a possible reaction mechanism via the Langmuir-Hinshelwood(L-H)mechanism is tentatively proposed to further understand the NH3-SCR reaction.
