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
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。
