风速和风向的不稳定、不确定性变化,使得风电机组难以保持稳定的风能转换状态,也直接导致了机组发电状态的不确定性。准确评估机组吸能与产能两种状态,对于制定生产、调度策略以及维护维修决策有着非常重要的意义。通过分析机组能量的...风速和风向的不稳定、不确定性变化,使得风电机组难以保持稳定的风能转换状态,也直接导致了机组发电状态的不确定性。准确评估机组吸能与产能两种状态,对于制定生产、调度策略以及维护维修决策有着非常重要的意义。通过分析机组能量的转换过程,指出风电机组具有显性与隐性两种存在状态,并进一步研究风电机组效能和性能两种功能状态特性。采用云模型描述机组监测数据,应用云特征参数定量描述机组隐性状态的期望特性、偏离特性和离散特性,建立机组自有的、蕴藏在SCADA(Supervisory control and data acquisition,SCADA)数据中的、汇集机组效能与性能综合表现的隐性状态的评价模型。实现对机组不同风速、不同功率参数段局部评价和整个生产参数段整体综合评价,评估结果能为生产调度和维护维修决策提供依据,促进风电场科学、优化管理。最后,采用风电场现场监测数据验证算法的正确性和可靠性。展开更多
Under the preconditions that a (n:n)-qutrit pure state is taken as the quantum channel to teleport an arbitrary n-qutrit state and the sender is able to perform generalized-Bell-state measurements and publish the resu...Under the preconditions that a (n:n)-qutrit pure state is taken as the quantum channel to teleport an arbitrary n-qutrit state and the sender is able to perform generalized-Bell-state measurements and publish the results, the necessary transformation operation in the receiver's site is worked out in terms of the technique of swapping states. A criterion on whether such quantum channel can be utilized for perfect teleportation is derived by virtue of the unitarity of the resultant transformation operator. Moreover, the flexibility between the measurement difficulty and the reconstruction difficulty is shown and discussed.展开更多
文摘风速和风向的不稳定、不确定性变化,使得风电机组难以保持稳定的风能转换状态,也直接导致了机组发电状态的不确定性。准确评估机组吸能与产能两种状态,对于制定生产、调度策略以及维护维修决策有着非常重要的意义。通过分析机组能量的转换过程,指出风电机组具有显性与隐性两种存在状态,并进一步研究风电机组效能和性能两种功能状态特性。采用云模型描述机组监测数据,应用云特征参数定量描述机组隐性状态的期望特性、偏离特性和离散特性,建立机组自有的、蕴藏在SCADA(Supervisory control and data acquisition,SCADA)数据中的、汇集机组效能与性能综合表现的隐性状态的评价模型。实现对机组不同风速、不同功率参数段局部评价和整个生产参数段整体综合评价,评估结果能为生产调度和维护维修决策提供依据,促进风电场科学、优化管理。最后,采用风电场现场监测数据验证算法的正确性和可靠性。
基金supported by the Specialized Research Fund for theDoctoral Program of Higher Education (Grant No. 20103401110007)the National Natural Science Foundation of China (Grant Nos. 10975001,10747146, 10874122 and 11074001)+1 种基金the Talent Foundation of High Education of Anhui Province for Outstanding Youth (Grant No. 2009SQRZ018)the 211 Project of Anhui University
文摘Under the preconditions that a (n:n)-qutrit pure state is taken as the quantum channel to teleport an arbitrary n-qutrit state and the sender is able to perform generalized-Bell-state measurements and publish the results, the necessary transformation operation in the receiver's site is worked out in terms of the technique of swapping states. A criterion on whether such quantum channel can be utilized for perfect teleportation is derived by virtue of the unitarity of the resultant transformation operator. Moreover, the flexibility between the measurement difficulty and the reconstruction difficulty is shown and discussed.
