Shared energy storage helps lower user investment costs and enhances energy efficiency,which is considered a pivotal driver in accelerating the green transition of energy sectors.In view of the increasing demand for h...Shared energy storage helps lower user investment costs and enhances energy efficiency,which is considered a pivotal driver in accelerating the green transition of energy sectors.In view of the increasing demand for hydrogen,this paper proposes a bi-level optimization of configurations and scheduling for combined cooling,heating,and power(CCHP)microgrid systems considering shared hybrid electric-hydrogen energy storage service.The upper-level model addresses the capacity allocation problem of energy storage stations,while the lower-level model optimizes the operational strategies for the multi-microgrid system(MMS).To resolve the complexity of the coupled bi-level problem,Karush-Kuhn-Tucker(KKT)conditions and the Big-M method are applied to reformulate it into a solvable mixed-integer linear programming(MILP)model,compatible with CPLEX.The economic viability and rationality of the proposed approach are verified through comparisons of three cases.Numerical results show that the proposed approach reduces user annual costs by 20.15%compared to MMS without additional energy storage equipment and achieves 100%renewable absorption.For operators,it yields 5.71 M CNY annual profit with 3.02-year payback.Compared to MMS with electricity sharing,it further cuts user costs by 3.84%,boosts operator profit by 60.71%,and shortens payback by 15.88%.展开更多
The development of agile manufacturing needs network supports. “Information Island” begot by CIMS LANs could be integrated efficiently by using Internet and Web so as to solve “Automation island” problem thoroughl...The development of agile manufacturing needs network supports. “Information Island” begot by CIMS LANs could be integrated efficiently by using Internet and Web so as to solve “Automation island” problem thoroughly. In this paper, a brief view on the MMS protocol and Web technology is given. Next, we propose an approach to extend CIMS (computer integrated manufacturing system) LANs to Internet/Intranet environments, on the basis of which, a Web based air conditioner MMS (manufacturing message specification) integrated monitor system is implemented.展开更多
This paper presents a theoretical-cum-experimental study on the dynamic behavior of Focal Isolation System of helicopter equipped with Mast Mounted Sight. A new simplified model of FIS/MMS/ Fuselage with 5-Degree of F...This paper presents a theoretical-cum-experimental study on the dynamic behavior of Focal Isolation System of helicopter equipped with Mast Mounted Sight. A new simplified model of FIS/MMS/ Fuselage with 5-Degree of Freedom (DOF) is proposed, where elasticity of the rotor shaft and the support structure of MMS are taken into account. In order to validate this model and make further investigation on MMS, a dummy MMS and its support are fabricated. Frequency and transfer function experiments are carried out on Z-× helicopter. Good correlation between theoretical and experimental results is achieved. A 39% decrease in 1st longitudinal frequency is noticed for FIS when the mass of MMS is 80kg, which is only 12% of the mass to be isolated. The elasticity of rotor shaft has great influence (403%) on the isolation efficiency of fuselage for prototype.展开更多
以变电站通信网络和系统中IEC 61850网关的研究为背景,首先介绍了制造报文规范(manufacturing message specification,MMS)在IEC 61850中的应用,分析了网关实现的关键技术——抽象通信服务接口(abstract communication service interfac...以变电站通信网络和系统中IEC 61850网关的研究为背景,首先介绍了制造报文规范(manufacturing message specification,MMS)在IEC 61850中的应用,分析了网关实现的关键技术——抽象通信服务接口(abstract communication service interface,ACSI)对象模型到MMS的映射,并给出了典型的映射实例。对象模型和服务的研究为实现变电站通信系统的互操作性和可扩展性提供了依据。展开更多
文摘Shared energy storage helps lower user investment costs and enhances energy efficiency,which is considered a pivotal driver in accelerating the green transition of energy sectors.In view of the increasing demand for hydrogen,this paper proposes a bi-level optimization of configurations and scheduling for combined cooling,heating,and power(CCHP)microgrid systems considering shared hybrid electric-hydrogen energy storage service.The upper-level model addresses the capacity allocation problem of energy storage stations,while the lower-level model optimizes the operational strategies for the multi-microgrid system(MMS).To resolve the complexity of the coupled bi-level problem,Karush-Kuhn-Tucker(KKT)conditions and the Big-M method are applied to reformulate it into a solvable mixed-integer linear programming(MILP)model,compatible with CPLEX.The economic viability and rationality of the proposed approach are verified through comparisons of three cases.Numerical results show that the proposed approach reduces user annual costs by 20.15%compared to MMS without additional energy storage equipment and achieves 100%renewable absorption.For operators,it yields 5.71 M CNY annual profit with 3.02-year payback.Compared to MMS with electricity sharing,it further cuts user costs by 3.84%,boosts operator profit by 60.71%,and shortens payback by 15.88%.
文摘The development of agile manufacturing needs network supports. “Information Island” begot by CIMS LANs could be integrated efficiently by using Internet and Web so as to solve “Automation island” problem thoroughly. In this paper, a brief view on the MMS protocol and Web technology is given. Next, we propose an approach to extend CIMS (computer integrated manufacturing system) LANs to Internet/Intranet environments, on the basis of which, a Web based air conditioner MMS (manufacturing message specification) integrated monitor system is implemented.
文摘This paper presents a theoretical-cum-experimental study on the dynamic behavior of Focal Isolation System of helicopter equipped with Mast Mounted Sight. A new simplified model of FIS/MMS/ Fuselage with 5-Degree of Freedom (DOF) is proposed, where elasticity of the rotor shaft and the support structure of MMS are taken into account. In order to validate this model and make further investigation on MMS, a dummy MMS and its support are fabricated. Frequency and transfer function experiments are carried out on Z-× helicopter. Good correlation between theoretical and experimental results is achieved. A 39% decrease in 1st longitudinal frequency is noticed for FIS when the mass of MMS is 80kg, which is only 12% of the mass to be isolated. The elasticity of rotor shaft has great influence (403%) on the isolation efficiency of fuselage for prototype.
文摘以变电站通信网络和系统中IEC 61850网关的研究为背景,首先介绍了制造报文规范(manufacturing message specification,MMS)在IEC 61850中的应用,分析了网关实现的关键技术——抽象通信服务接口(abstract communication service interface,ACSI)对象模型到MMS的映射,并给出了典型的映射实例。对象模型和服务的研究为实现变电站通信系统的互操作性和可扩展性提供了依据。
