This paper presents the solution to the combined heat and power economic dispatch problem using a direct solution algorithm for constrained optimization problems. With the potential of Combined Heat and Power (CHP) pr...This paper presents the solution to the combined heat and power economic dispatch problem using a direct solution algorithm for constrained optimization problems. With the potential of Combined Heat and Power (CHP) production to increase the efficiency of power and heat generation simultaneously having been researched and established, the increasing penetration of CHP systems, and determination of economic dispatch of power and heat assumes higher relevance. The Combined Heat and Power Economic Dispatch (CHPED) problem is a demanding optimization problem as both constraints and objective functions can be non-linear and non-convex. This paper presents an explicit formula developed for computing the system-wide incremental costs corresponding with optimal dispatch. The circumvention of the use of iterative search schemes for this crucial step is the innovation inherent in the proposed dispatch procedure. The feasible operating region of the CHP unit three is taken into account in the proposed CHPED problem model, whereas the optimal dispatch of power/heat outputs of CHP unit is determined using the direct Lagrange multiplier solution algorithm. The proposed algorithm is applied to a test system with four units and results are provided.展开更多
为了提升虚拟电厂(virtual power plant,VPP)的经济效益,促进风、光等清洁能源的消纳,文章设计了一种基于混合灰狼(hybrid grey wolf optimization,HGWO)算法的VPP经济调度模型。将VPP运行成本最小作为目标函数,利用HGWO算法对目标函数...为了提升虚拟电厂(virtual power plant,VPP)的经济效益,促进风、光等清洁能源的消纳,文章设计了一种基于混合灰狼(hybrid grey wolf optimization,HGWO)算法的VPP经济调度模型。将VPP运行成本最小作为目标函数,利用HGWO算法对目标函数进行最优值搜索,算例结果显示,HGWO算法收敛时的进化代数和收敛时间分别为55代和12.15 s,获得的VPP最小运行成本为57.36万元,以及HGWO算法的各项性能指标均优于文章所列出的其他3种算法;同时也表明了通过科学调度VPP内部的各类分布式电源,不仅满足了VPP负荷需求,而且使风电场和光伏电站的输出电能得到了充分利用,进而提升了VPP的经济性。展开更多
文摘This paper presents the solution to the combined heat and power economic dispatch problem using a direct solution algorithm for constrained optimization problems. With the potential of Combined Heat and Power (CHP) production to increase the efficiency of power and heat generation simultaneously having been researched and established, the increasing penetration of CHP systems, and determination of economic dispatch of power and heat assumes higher relevance. The Combined Heat and Power Economic Dispatch (CHPED) problem is a demanding optimization problem as both constraints and objective functions can be non-linear and non-convex. This paper presents an explicit formula developed for computing the system-wide incremental costs corresponding with optimal dispatch. The circumvention of the use of iterative search schemes for this crucial step is the innovation inherent in the proposed dispatch procedure. The feasible operating region of the CHP unit three is taken into account in the proposed CHPED problem model, whereas the optimal dispatch of power/heat outputs of CHP unit is determined using the direct Lagrange multiplier solution algorithm. The proposed algorithm is applied to a test system with four units and results are provided.
文摘为了提升虚拟电厂(virtual power plant,VPP)的经济效益,促进风、光等清洁能源的消纳,文章设计了一种基于混合灰狼(hybrid grey wolf optimization,HGWO)算法的VPP经济调度模型。将VPP运行成本最小作为目标函数,利用HGWO算法对目标函数进行最优值搜索,算例结果显示,HGWO算法收敛时的进化代数和收敛时间分别为55代和12.15 s,获得的VPP最小运行成本为57.36万元,以及HGWO算法的各项性能指标均优于文章所列出的其他3种算法;同时也表明了通过科学调度VPP内部的各类分布式电源,不仅满足了VPP负荷需求,而且使风电场和光伏电站的输出电能得到了充分利用,进而提升了VPP的经济性。
