The dispatching center of power-grid companies is also the data center of the power grid where gathers great amount of operating information. The valuable information contained in these data means a lot for power grid...The dispatching center of power-grid companies is also the data center of the power grid where gathers great amount of operating information. The valuable information contained in these data means a lot for power grid operating management, but at present there is no special method for the management of operating data resource. This paper introduces the operating analysis and data mining system for power grid dispatching. The technique of data warehousing online analytical processing has been used to manage and analysis the great capacity of data. This analysis system is based on the real-time data of the power grid to dig out the potential rule of the power grid operating. This system also provides a research platform for the dispatchers, help to improve the JIT (Just in Time) management of power system.展开更多
风电机组并网容量占比的不断增大为电力系统风电消纳带来了巨大挑战。数据中心作为高灵活性电负荷,具有电网风电消纳巨大潜力。因此,提出一种计及数据中心和风电不确定性的微电网经济调度模型。首先,根据数据中心的分层结构建立信息层...风电机组并网容量占比的不断增大为电力系统风电消纳带来了巨大挑战。数据中心作为高灵活性电负荷,具有电网风电消纳巨大潜力。因此,提出一种计及数据中心和风电不确定性的微电网经济调度模型。首先,根据数据中心的分层结构建立信息层和电力层之间的耦合模型;其次,针对风电出力不确定性,搭建计及数据中心和风电不确定性的微电网经济调度模型;最后,基于对偶理论和两阶段鲁棒优化算法,将调度模型转化为鲁棒优化模型并采用列和约束生成算法(column and constraint generation,C&CG)和对偶理论进行求解。算例结果表明:数据中心参与微电网经济调度可有效降低运行成本,同时系统运营商按需求可灵活调整风电出力不确定性。展开更多
文摘The dispatching center of power-grid companies is also the data center of the power grid where gathers great amount of operating information. The valuable information contained in these data means a lot for power grid operating management, but at present there is no special method for the management of operating data resource. This paper introduces the operating analysis and data mining system for power grid dispatching. The technique of data warehousing online analytical processing has been used to manage and analysis the great capacity of data. This analysis system is based on the real-time data of the power grid to dig out the potential rule of the power grid operating. This system also provides a research platform for the dispatchers, help to improve the JIT (Just in Time) management of power system.
文摘风电机组并网容量占比的不断增大为电力系统风电消纳带来了巨大挑战。数据中心作为高灵活性电负荷,具有电网风电消纳巨大潜力。因此,提出一种计及数据中心和风电不确定性的微电网经济调度模型。首先,根据数据中心的分层结构建立信息层和电力层之间的耦合模型;其次,针对风电出力不确定性,搭建计及数据中心和风电不确定性的微电网经济调度模型;最后,基于对偶理论和两阶段鲁棒优化算法,将调度模型转化为鲁棒优化模型并采用列和约束生成算法(column and constraint generation,C&CG)和对偶理论进行求解。算例结果表明:数据中心参与微电网经济调度可有效降低运行成本,同时系统运营商按需求可灵活调整风电出力不确定性。