Integrated energy distribution system(IEDS)is one of the integrated energy and power system forms,which involves electricity/gas/cold/heat and other various energy forms.The energy coupling relationship is close and c...Integrated energy distribution system(IEDS)is one of the integrated energy and power system forms,which involves electricity/gas/cold/heat and other various energy forms.The energy coupling relationship is close and complex.IEDS is the focus of regional energy internet research and development at home and abroad.Compared with the traditional power distribution system,IEDS through the multi-energy coupling link comprehensive utilization,effectively improve the distribution system economy,safety,reliability,flexibility and toughness,but also to ease the regional energy system environmental pressure.IEDS is an important direction for the future development of energy systems,and its related research and practice on China’s energy system development also has important practical and strategic significance.This paper summarizes the related researches of the IEDS and explores the energy operation characteristics and coupling mechanisms.What’s more,the integrated model of IEDS is summarized.On these bases,this paper discusses and prospects some key issues such as joint planning,optimization control and security analysis,state estimation and situational awareness and generalized demand side management.展开更多
This paper presents an integrated missile guidance and control law based on adaptive fuzzy sliding mode control. The integrated model is formulated as a block-strict-feedback nonlinear system, in which modeling errors...This paper presents an integrated missile guidance and control law based on adaptive fuzzy sliding mode control. The integrated model is formulated as a block-strict-feedback nonlinear system, in which modeling errors, unmodeled nonlinearities, target maneuvers, etc. are viewed as unknown uncertainties. The adaptive nonlinear control law is designed based on backstepping and sliding mode control techniques. An adaptive fuzzy system is adopted to approximate the coupling nonlinear functions of the system, and for the uncertainties, we utilize an online-adaptive control law to estimate the unknown parameters. The stability analysis of the closed-loop system is also conducted. Simulation results show that, with the application of the adaptive fuzzy sliding mode control, small miss distances and smooth missile trajectories are achieved, and the system is robust against system uncertainties and external disturbances.展开更多
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
基金This work was supported by the National High Technology Research and Development Program(863 Program)of China(2015AA050403)Natural Science Foundation of Tianjin(17JCQNJC06600)+2 种基金Independent Innovation Foundation of Tianjin University(Research on Key Technology of Distributed Demand Response)Ocean Engineering Equipment and Technical Think Tank Joint Project of Qingdao(201707071003)the Distributed Energy and Microgrid Project conducted in collaboration with APPLIED ENERGY UNiLAB-DEM.
文摘Integrated energy distribution system(IEDS)is one of the integrated energy and power system forms,which involves electricity/gas/cold/heat and other various energy forms.The energy coupling relationship is close and complex.IEDS is the focus of regional energy internet research and development at home and abroad.Compared with the traditional power distribution system,IEDS through the multi-energy coupling link comprehensive utilization,effectively improve the distribution system economy,safety,reliability,flexibility and toughness,but also to ease the regional energy system environmental pressure.IEDS is an important direction for the future development of energy systems,and its related research and practice on China’s energy system development also has important practical and strategic significance.This paper summarizes the related researches of the IEDS and explores the energy operation characteristics and coupling mechanisms.What’s more,the integrated model of IEDS is summarized.On these bases,this paper discusses and prospects some key issues such as joint planning,optimization control and security analysis,state estimation and situational awareness and generalized demand side management.
基金co-supported by the National Natural Science Foundation of China (No. 61074027)the National Defense Pre-research Foundation of China (No. 9140C48020212HK0101)
文摘This paper presents an integrated missile guidance and control law based on adaptive fuzzy sliding mode control. The integrated model is formulated as a block-strict-feedback nonlinear system, in which modeling errors, unmodeled nonlinearities, target maneuvers, etc. are viewed as unknown uncertainties. The adaptive nonlinear control law is designed based on backstepping and sliding mode control techniques. An adaptive fuzzy system is adopted to approximate the coupling nonlinear functions of the system, and for the uncertainties, we utilize an online-adaptive control law to estimate the unknown parameters. The stability analysis of the closed-loop system is also conducted. Simulation results show that, with the application of the adaptive fuzzy sliding mode control, small miss distances and smooth missile trajectories are achieved, and the system is robust against system uncertainties and external disturbances.
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。
