分布式可再生能源大量并网成为必然趋势,合理的设备规划可以提升配电系统运行灵活性,保证可再生能源的有效消纳。智能储能软开关(soft open points integrated with energy storage system,ESOP)具有时空双尺度运行灵活性,有利于分布式...分布式可再生能源大量并网成为必然趋势,合理的设备规划可以提升配电系统运行灵活性,保证可再生能源的有效消纳。智能储能软开关(soft open points integrated with energy storage system,ESOP)具有时空双尺度运行灵活性,有利于分布式能源并网。因此,考虑规划决策者不完全理性特点,提出一种配电网ESOP规划方法。首先,建立了含ESOP的配电网运行模型;然后,提取出多种面向高渗透率可再生能源并网下的ESOP规划经济性指标;最后,基于前景理论描述不完全理性特征,构建了配电网功率损失减少、购电成本减少、弃风弃光惩罚减少及投资成本属性的前景值模型,以年度综合前景值最大为目标构建ESOP的规划模型。通过线性化凸松弛等手段将原规划模型转化为混合整数二阶锥规划模型。改进的IEEE33节点系统与实际配电网算例结果表明,ESOP可以通过时序特性和柔性互联特性提升配电网消纳能力和运行经济性;同时,决策者对于各属性的重视程度和期望值会对规划结果产生影响。展开更多
The adsorptive separation of C_(2)H_(4)and C_(2)H_(6),as an alternative to distillation units consuming high energy,is a promising yet challenging research.The great similarity in the molecular size of C_(2)H_(4)and C...The adsorptive separation of C_(2)H_(4)and C_(2)H_(6),as an alternative to distillation units consuming high energy,is a promising yet challenging research.The great similarity in the molecular size of C_(2)H_(4)and C_(2)H_(6)brings challenges to the regulation of adsorbents to realize efficient dynamic separation.Herein,we reported the enhancement of the kinetic separation of C_(2)H_(4)/C_(2)H_(6)by controlling the crystal size of ZnAtzPO_(4)(Atz=3-amino-1,2,4-triazole)to amplify the diffusion difference of C_(2)H_(4)and C_(2)H_(6).Through adjusting the synthesis temperature,reactant concentration,and ligands/metal ions molar ratio,ZnAtzPO4 crystals with different sizes were obtained.Both single-component kinetic adsorption tests and binary-component dynamic breakthrough experiments confirmed the enhancement of the dynamic separation of C_(2)H_(4)/C_(2)H_(6)with the increase in the crystal size of ZnAtzPO_(4).The separation selectivity of C_(2)H_(4)/C_(2)H_(6)increased from 1.3 to 98.5 with the increase in the crystal size of ZnAtzPO_(4).This work demonstrated the role of morphology and size control of adsorbent crystals in the improvement of the C_(2)H_(4)/C_(2)H_(6)kinetic separation performance.展开更多
文摘分布式可再生能源大量并网成为必然趋势,合理的设备规划可以提升配电系统运行灵活性,保证可再生能源的有效消纳。智能储能软开关(soft open points integrated with energy storage system,ESOP)具有时空双尺度运行灵活性,有利于分布式能源并网。因此,考虑规划决策者不完全理性特点,提出一种配电网ESOP规划方法。首先,建立了含ESOP的配电网运行模型;然后,提取出多种面向高渗透率可再生能源并网下的ESOP规划经济性指标;最后,基于前景理论描述不完全理性特征,构建了配电网功率损失减少、购电成本减少、弃风弃光惩罚减少及投资成本属性的前景值模型,以年度综合前景值最大为目标构建ESOP的规划模型。通过线性化凸松弛等手段将原规划模型转化为混合整数二阶锥规划模型。改进的IEEE33节点系统与实际配电网算例结果表明,ESOP可以通过时序特性和柔性互联特性提升配电网消纳能力和运行经济性;同时,决策者对于各属性的重视程度和期望值会对规划结果产生影响。
基金supported by the National Key Research and Development Program of China(2022YFB3806800)the National Natural Science Foundation of China(22122811,22008209)the Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering(2021SZ-TD008).
文摘The adsorptive separation of C_(2)H_(4)and C_(2)H_(6),as an alternative to distillation units consuming high energy,is a promising yet challenging research.The great similarity in the molecular size of C_(2)H_(4)and C_(2)H_(6)brings challenges to the regulation of adsorbents to realize efficient dynamic separation.Herein,we reported the enhancement of the kinetic separation of C_(2)H_(4)/C_(2)H_(6)by controlling the crystal size of ZnAtzPO_(4)(Atz=3-amino-1,2,4-triazole)to amplify the diffusion difference of C_(2)H_(4)and C_(2)H_(6).Through adjusting the synthesis temperature,reactant concentration,and ligands/metal ions molar ratio,ZnAtzPO4 crystals with different sizes were obtained.Both single-component kinetic adsorption tests and binary-component dynamic breakthrough experiments confirmed the enhancement of the dynamic separation of C_(2)H_(4)/C_(2)H_(6)with the increase in the crystal size of ZnAtzPO_(4).The separation selectivity of C_(2)H_(4)/C_(2)H_(6)increased from 1.3 to 98.5 with the increase in the crystal size of ZnAtzPO_(4).This work demonstrated the role of morphology and size control of adsorbent crystals in the improvement of the C_(2)H_(4)/C_(2)H_(6)kinetic separation performance.