多能互补综合能源系统(Integrated Energy System,IES)的发展为实现能源高效利用和生态环境改善提供了新的可能,文中充分考虑IES多目标运行约束,以及不同能源响应特性在时间尺度上的差异,提出一种基于多目标的IES日前-日内分层优化控制...多能互补综合能源系统(Integrated Energy System,IES)的发展为实现能源高效利用和生态环境改善提供了新的可能,文中充分考虑IES多目标运行约束,以及不同能源响应特性在时间尺度上的差异,提出一种基于多目标的IES日前-日内分层优化控制策略。在日前阶段,考虑环保、能耗、可靠性、经济等多目标,将前三类通过量化评价指标加入到模型约束条件中,构建IES日前多目标优化模型,合理安排供能储能机组的出力计划;在日内阶段,依据冷热能和电能的调控时间差异实现分层控制,上层控制和下层控制分别通过机组调控惩罚成本,引导滚动修正机组出力平抑冷热能功率波动和电能功率波动。最后,基于一种典型IES结构设计算例,分析IES日前控制和日内控制各设备出力,验证所提方法的有效性。展开更多
With the expansion and implementation of rural revitalization strategies,there is a constant need for new energy sources for the construction of new townships.Consequently,integrated energy systems with the interconne...With the expansion and implementation of rural revitalization strategies,there is a constant need for new energy sources for the construction of new townships.Consequently,integrated energy systems with the interconnection and interaction of multiple energy sources are developing rapidly.Biomass energy,a renewable green energy source with low pollution and wide distribution,has significant application potential in integrated energy systems.Considering the application of biomass energy in townships,this study established an integrated biomass energy system and proposed a model to optimize its operation.Lowest economic cost and highest clean energy utilization rate were considered as the objective functions.In addition,a plan was suggested to adjust the heat-electricity ratio based on the characteristics of the combined heat and power of the biomass.Finally,a simulation analysis conducted for a town in China was discussed,demonstrating that the construction of a township integrated-energy system and the use of biomass can significantly reduce operating costs and improve the energy utilization rate.Moreover,by adjusting the heat-electricity ratio,the economic cost was further reduced by 6.70%,whereas the clean energy utilization rate was increased by 5.14%.展开更多
本文构建了以热电联产机组(combined heat and power unit,CHP)、电力市场和热力市场为参与者的主从博弈模型,并基于电力市场中节点边际电价(locational marginal electricity price,LMEP)的概念,提出了节点边际热价(locational margina...本文构建了以热电联产机组(combined heat and power unit,CHP)、电力市场和热力市场为参与者的主从博弈模型,并基于电力市场中节点边际电价(locational marginal electricity price,LMEP)的概念,提出了节点边际热价(locational marginal heat price,LMHP)的概念.在节点边际电价的求解中,采用了支路潮流(branch power flow,BPF)模型,考虑了配电网中的网络损耗从而可以得到更精确的计算结果.在节点边际热价的求解中,考虑了管道热损耗,并基于管道损耗方程分析了节点边际热价的分布规律.在此基础上,采用变步长迭代寻优算法求解热电联产机组、电力市场、热力市场各自最优出力和最优报价策略.最后,通过一个6节点电网–4节点热网的算例对所构建的主从博弈模型及热电联产机组的竞价策略进行了验证.展开更多
文摘多能互补综合能源系统(Integrated Energy System,IES)的发展为实现能源高效利用和生态环境改善提供了新的可能,文中充分考虑IES多目标运行约束,以及不同能源响应特性在时间尺度上的差异,提出一种基于多目标的IES日前-日内分层优化控制策略。在日前阶段,考虑环保、能耗、可靠性、经济等多目标,将前三类通过量化评价指标加入到模型约束条件中,构建IES日前多目标优化模型,合理安排供能储能机组的出力计划;在日内阶段,依据冷热能和电能的调控时间差异实现分层控制,上层控制和下层控制分别通过机组调控惩罚成本,引导滚动修正机组出力平抑冷热能功率波动和电能功率波动。最后,基于一种典型IES结构设计算例,分析IES日前控制和日内控制各设备出力,验证所提方法的有效性。
基金supported by the National Natural Science Foundation of China(U2066211)。
文摘With the expansion and implementation of rural revitalization strategies,there is a constant need for new energy sources for the construction of new townships.Consequently,integrated energy systems with the interconnection and interaction of multiple energy sources are developing rapidly.Biomass energy,a renewable green energy source with low pollution and wide distribution,has significant application potential in integrated energy systems.Considering the application of biomass energy in townships,this study established an integrated biomass energy system and proposed a model to optimize its operation.Lowest economic cost and highest clean energy utilization rate were considered as the objective functions.In addition,a plan was suggested to adjust the heat-electricity ratio based on the characteristics of the combined heat and power of the biomass.Finally,a simulation analysis conducted for a town in China was discussed,demonstrating that the construction of a township integrated-energy system and the use of biomass can significantly reduce operating costs and improve the energy utilization rate.Moreover,by adjusting the heat-electricity ratio,the economic cost was further reduced by 6.70%,whereas the clean energy utilization rate was increased by 5.14%.
文摘本文构建了以热电联产机组(combined heat and power unit,CHP)、电力市场和热力市场为参与者的主从博弈模型,并基于电力市场中节点边际电价(locational marginal electricity price,LMEP)的概念,提出了节点边际热价(locational marginal heat price,LMHP)的概念.在节点边际电价的求解中,采用了支路潮流(branch power flow,BPF)模型,考虑了配电网中的网络损耗从而可以得到更精确的计算结果.在节点边际热价的求解中,考虑了管道热损耗,并基于管道损耗方程分析了节点边际热价的分布规律.在此基础上,采用变步长迭代寻优算法求解热电联产机组、电力市场、热力市场各自最优出力和最优报价策略.最后,通过一个6节点电网–4节点热网的算例对所构建的主从博弈模型及热电联产机组的竞价策略进行了验证.
