The objective of this research is to propose a decision support system for avoiding flood on solar power plant site selection. Methodologically, the geographic information system (GIS) is used to determine the optimum...The objective of this research is to propose a decision support system for avoiding flood on solar power plant site selection. Methodologically, the geographic information system (GIS) is used to determine the optimum site for a solar power plant. It is intended to integrate the qualitative and quantitative variables based upon the adoption of the Fuzzy Analytic Hierarchy Process (Fuzzy AHP) and the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) model. These methods are employed to unite the environmental aspects and social needs for electrical power systematically. Regarding a case study of the choice of a solar power plant site in Thailand, it demonstrates that the quantitative and qualitative criteria should be realized prior to analysis in the Fuzzy AHP-TOPSIS model. The fuzzy AHP is employed to determine the weights of qualitative and quantitative criteria that can affect the selection process. The adoption of the fuzzy AHP is aimed to model the linguistic unclear, ambiguous, and incomplete knowledge. Additionally, TOPSIS, which is a ranking multi-criteria decision making method, is employed to rank the alternative sites based upon overall efficiency. The contribution of this paper lies in the evolution of a new approach that is flexible and practical to the decision maker, in providing the guidelines for the solar power plant site choices under stakeholder needs: at the same time, the desirable functions are achieved, in avoiding flood, reducing cost, time and causing less environmental impact. The new approach is assessed in the empirical study during major flooding in Thailand during the fourth quarter of 2011 to 2012. The result analysis and sensitivity analysis are also presented.展开更多
分布式资源(distributed energy resources,DERs)的随机元素会引起多虚拟电厂(multi-virtual power plant,MVPP)系统内虚拟电厂(virtual power plant,VPP)策略频繁变化。对于某主体,如何感知其他主体策略突然变化时对自身收益的影响趋势...分布式资源(distributed energy resources,DERs)的随机元素会引起多虚拟电厂(multi-virtual power plant,MVPP)系统内虚拟电厂(virtual power plant,VPP)策略频繁变化。对于某主体,如何感知其他主体策略突然变化时对自身收益的影响趋势,并快速调整自身策略,是亟需解决的难点。该文提出基于二阶随机动力学的多虚拟电厂自趋优能量管理策略,旨在提升VPP应对其他主体策略变化时的自治能力。首先,针对DERs异质运行特性,聚焦可调空间构建VPP聚合运行模型;然后,基于随机图描绘VPP策略变化的随机特性;其次,用二阶随机动力学方程(stochastic dynamic equation,SDE)探索VPP收益结构的自发演化信息,修正其他主体策略变化时自身综合收益;再次,将修正收益作为融合软动作-评价(integrated soft actor–critic,ISAC)强化学习算法的奖励搭建多智能体求解框架。最后,设计多算法对比实验,验证了该文策略的自趋优性能。展开更多
针对炉温类被控对象提出了一种基于开环阶跃响应的获取对象特征参数的新方法,给出了程序流程图。与两点法、交叉两点法及特征面积法等方法不同,在应用计算机求解的过程中仅需保留邻近4个采样时刻的采样值,且无需阶跃响应达到稳态即可计...针对炉温类被控对象提出了一种基于开环阶跃响应的获取对象特征参数的新方法,给出了程序流程图。与两点法、交叉两点法及特征面积法等方法不同,在应用计算机求解的过程中仅需保留邻近4个采样时刻的采样值,且无需阶跃响应达到稳态即可计算出对象的特征参数,具有数据存储量小、速度快、方法简单等特点。应用该方法获取某红外线加热炉温度系统的特征参数,并采用ITAE(Integral Time Absolute Error)设定公式整定PID控制器的参数,取得了较好的控制效果。展开更多
基金supported by National Natural Science Foundation of China(61104085,51505213)Natural Science Foundation of Jiangsu Province(BK20151463,BK20130744)+2 种基金Innovation Foundation of NJIT(CKJA201409,CKJB201209)sponsored by Jiangsu Qing Lan ProjectJiangsu Government Scholarship for Overseas Studies(JS-2012-051)
文摘The objective of this research is to propose a decision support system for avoiding flood on solar power plant site selection. Methodologically, the geographic information system (GIS) is used to determine the optimum site for a solar power plant. It is intended to integrate the qualitative and quantitative variables based upon the adoption of the Fuzzy Analytic Hierarchy Process (Fuzzy AHP) and the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) model. These methods are employed to unite the environmental aspects and social needs for electrical power systematically. Regarding a case study of the choice of a solar power plant site in Thailand, it demonstrates that the quantitative and qualitative criteria should be realized prior to analysis in the Fuzzy AHP-TOPSIS model. The fuzzy AHP is employed to determine the weights of qualitative and quantitative criteria that can affect the selection process. The adoption of the fuzzy AHP is aimed to model the linguistic unclear, ambiguous, and incomplete knowledge. Additionally, TOPSIS, which is a ranking multi-criteria decision making method, is employed to rank the alternative sites based upon overall efficiency. The contribution of this paper lies in the evolution of a new approach that is flexible and practical to the decision maker, in providing the guidelines for the solar power plant site choices under stakeholder needs: at the same time, the desirable functions are achieved, in avoiding flood, reducing cost, time and causing less environmental impact. The new approach is assessed in the empirical study during major flooding in Thailand during the fourth quarter of 2011 to 2012. The result analysis and sensitivity analysis are also presented.
文摘分布式资源(distributed energy resources,DERs)的随机元素会引起多虚拟电厂(multi-virtual power plant,MVPP)系统内虚拟电厂(virtual power plant,VPP)策略频繁变化。对于某主体,如何感知其他主体策略突然变化时对自身收益的影响趋势,并快速调整自身策略,是亟需解决的难点。该文提出基于二阶随机动力学的多虚拟电厂自趋优能量管理策略,旨在提升VPP应对其他主体策略变化时的自治能力。首先,针对DERs异质运行特性,聚焦可调空间构建VPP聚合运行模型;然后,基于随机图描绘VPP策略变化的随机特性;其次,用二阶随机动力学方程(stochastic dynamic equation,SDE)探索VPP收益结构的自发演化信息,修正其他主体策略变化时自身综合收益;再次,将修正收益作为融合软动作-评价(integrated soft actor–critic,ISAC)强化学习算法的奖励搭建多智能体求解框架。最后,设计多算法对比实验,验证了该文策略的自趋优性能。
文摘针对炉温类被控对象提出了一种基于开环阶跃响应的获取对象特征参数的新方法,给出了程序流程图。与两点法、交叉两点法及特征面积法等方法不同,在应用计算机求解的过程中仅需保留邻近4个采样时刻的采样值,且无需阶跃响应达到稳态即可计算出对象的特征参数,具有数据存储量小、速度快、方法简单等特点。应用该方法获取某红外线加热炉温度系统的特征参数,并采用ITAE(Integral Time Absolute Error)设定公式整定PID控制器的参数,取得了较好的控制效果。
