As cloud quantum computing gains broader acceptance,a growing quantity of researchers are directing their focus towards this domain.Nevertheless,the rapid surge in demand for cloud-based quantum computing resources ha...As cloud quantum computing gains broader acceptance,a growing quantity of researchers are directing their focus towards this domain.Nevertheless,the rapid surge in demand for cloud-based quantum computing resources has led to a scarcity,which in turn hampers users from achieving optimal satisfaction.Therefore,cloud quantum computing service providers require a unified analysis and scheduling framework for their quantumresources and user jobs to meet the ever-growing usage demands.This paper introduces a new multi-programming scheduling framework for quantum computing in a cloud environment.The framework addresses the issue of limited quantum computing resources in cloud environments and ensures a satisfactory user experience.It introduces three innovative designs:1)Our framework automatically allocates tasks to different quantum backends while ensuring fairness among users by considering both the cloud-based quantum resources and the user-submitted tasks.2)Multi-programming mechanism is employed across different quantum backends to enhance the overall throughput of the quantum cloud.In comparison to conventional task schedulers,our proposed framework achieves a throughput improvement of more than two-fold in the quantum cloud.3)The framework can balance fidelity and user waiting time by adaptively adjusting scheduling parameters.展开更多
该文提出一种考虑故障后多阶段恢复的智能软开关(soft open point,SOP)柔性互联配电网(flexible interconnected distribution network,FIDN)可靠性评估方法,其特征在于将基于SOP的FIDN网络拓扑状态通过优化过程的决策变量显式表达,建...该文提出一种考虑故障后多阶段恢复的智能软开关(soft open point,SOP)柔性互联配电网(flexible interconnected distribution network,FIDN)可靠性评估方法,其特征在于将基于SOP的FIDN网络拓扑状态通过优化过程的决策变量显式表达,建立面向FIDN可靠性评估的混合整数线性规划模型,从而实现FIDN可靠性评估。首先,分析FIDN多阶段恢复过程,提出一种多阶段恢复过程解耦建模的FIDN可靠性评估框架;然后,基于SOP正常运行和不同故障下的外特性,建立面向可靠性评估的SOP等效模型,构建FIDN节点-支路状态关联模型以实现网络拓扑状态显式化;之后,考虑SOP转供功率约束及短时过载能力,建立不同策略下的SOP快速转供模型;在此基础上,考虑SOP快速转供、故障点上游恢复、联络开关切换转供、孤岛运行等多阶段恢复过程,建立面向FIDN可靠性评估的混合整数线性规划模型;最后,在改进的37节点系统上验证所提方法的有效性。展开更多
【目的】基于虚拟电厂(virtual power plant,VPP)技术聚合区域电网内部分布式资源,能以低边际成本有效提高系统灵活性。然而,信息安全等因素导致的数据壁垒,以及分布式协调计算效率和调控资源的不确定性等问题给虚拟电厂辅助服务决策带...【目的】基于虚拟电厂(virtual power plant,VPP)技术聚合区域电网内部分布式资源,能以低边际成本有效提高系统灵活性。然而,信息安全等因素导致的数据壁垒,以及分布式协调计算效率和调控资源的不确定性等问题给虚拟电厂辅助服务决策带来困难。据此,分析VPP整体对外特性,包括关口功率、备用能力及运行成本,提出了一种VPP鲁棒调度特性可信量化方法,并构建多VPP博弈的协同调度模型。【方法】首先,考虑分布式电源和需求响应不确定因素影响,解析网络约束下的源荷备用潜力,从而建立VPP数学模型;其次,结合鲁棒优化和多参数规划理论,实现VPP关口功率调节空间、弹性备用能力和最优成本鲁棒可行域可信量化,建立VPP内部资源调控策略与对外交易结果的仿射关系,完成VPP等值聚合;进一步,构建了多VPP与主网有效互动的合作博弈模型;最后,通过3个测试算例验证了本文模型和方法的有效性。【结果】所量化的封装模型参与调度具有更高的计算效率,且保护了VPP内部信息隐私性。通过设计并行程序,封装模型量化过程计算效率得到了进一步提升。【结论】所提方法能有效支撑多重VPP主体协同大电网进行能量和辅助服务的交易,加强主网安全防御体系建设。展开更多
文摘As cloud quantum computing gains broader acceptance,a growing quantity of researchers are directing their focus towards this domain.Nevertheless,the rapid surge in demand for cloud-based quantum computing resources has led to a scarcity,which in turn hampers users from achieving optimal satisfaction.Therefore,cloud quantum computing service providers require a unified analysis and scheduling framework for their quantumresources and user jobs to meet the ever-growing usage demands.This paper introduces a new multi-programming scheduling framework for quantum computing in a cloud environment.The framework addresses the issue of limited quantum computing resources in cloud environments and ensures a satisfactory user experience.It introduces three innovative designs:1)Our framework automatically allocates tasks to different quantum backends while ensuring fairness among users by considering both the cloud-based quantum resources and the user-submitted tasks.2)Multi-programming mechanism is employed across different quantum backends to enhance the overall throughput of the quantum cloud.In comparison to conventional task schedulers,our proposed framework achieves a throughput improvement of more than two-fold in the quantum cloud.3)The framework can balance fidelity and user waiting time by adaptively adjusting scheduling parameters.
文摘该文提出一种考虑故障后多阶段恢复的智能软开关(soft open point,SOP)柔性互联配电网(flexible interconnected distribution network,FIDN)可靠性评估方法,其特征在于将基于SOP的FIDN网络拓扑状态通过优化过程的决策变量显式表达,建立面向FIDN可靠性评估的混合整数线性规划模型,从而实现FIDN可靠性评估。首先,分析FIDN多阶段恢复过程,提出一种多阶段恢复过程解耦建模的FIDN可靠性评估框架;然后,基于SOP正常运行和不同故障下的外特性,建立面向可靠性评估的SOP等效模型,构建FIDN节点-支路状态关联模型以实现网络拓扑状态显式化;之后,考虑SOP转供功率约束及短时过载能力,建立不同策略下的SOP快速转供模型;在此基础上,考虑SOP快速转供、故障点上游恢复、联络开关切换转供、孤岛运行等多阶段恢复过程,建立面向FIDN可靠性评估的混合整数线性规划模型;最后,在改进的37节点系统上验证所提方法的有效性。
文摘【目的】基于虚拟电厂(virtual power plant,VPP)技术聚合区域电网内部分布式资源,能以低边际成本有效提高系统灵活性。然而,信息安全等因素导致的数据壁垒,以及分布式协调计算效率和调控资源的不确定性等问题给虚拟电厂辅助服务决策带来困难。据此,分析VPP整体对外特性,包括关口功率、备用能力及运行成本,提出了一种VPP鲁棒调度特性可信量化方法,并构建多VPP博弈的协同调度模型。【方法】首先,考虑分布式电源和需求响应不确定因素影响,解析网络约束下的源荷备用潜力,从而建立VPP数学模型;其次,结合鲁棒优化和多参数规划理论,实现VPP关口功率调节空间、弹性备用能力和最优成本鲁棒可行域可信量化,建立VPP内部资源调控策略与对外交易结果的仿射关系,完成VPP等值聚合;进一步,构建了多VPP与主网有效互动的合作博弈模型;最后,通过3个测试算例验证了本文模型和方法的有效性。【结果】所量化的封装模型参与调度具有更高的计算效率,且保护了VPP内部信息隐私性。通过设计并行程序,封装模型量化过程计算效率得到了进一步提升。【结论】所提方法能有效支撑多重VPP主体协同大电网进行能量和辅助服务的交易,加强主网安全防御体系建设。
