With the rapid development of electronic information technology,the Internet of Things(IoT),Internet technology,and modern communication technology,people are demanding higher standards for the building environment.Es...With the rapid development of electronic information technology,the Internet of Things(IoT),Internet technology,and modern communication technology,people are demanding higher standards for the building environment.Especially in modern large-scale buildings with high levels of industrialization,lighting systems should also be optimized accordingly.This article explores the application path of intelligent lighting in thermal power plants for reference.展开更多
An extensive survey of computer based systems that apply different approaches for faults diagnostics and identifications in nuclear power plants (NPPs) was presented. In the light of reviewed material, the classificat...An extensive survey of computer based systems that apply different approaches for faults diagnostics and identifications in nuclear power plants (NPPs) was presented. In the light of reviewed material, the classification criteria were developed. The classification of computational techniques (class of computing devices, class of programming languages, and simulation programs) was discussed. The classification of theoretical aspects applied (brief aspects, and detailed aspects) in computer based diagnostic systems were established. The classification of metholology applied (symbolic reasoning methodology, event based methodology, and function based methodology) in the diagnostic systems was also depicted. In the end, the personal comments on the reviewed material, and scope of the study were described.展开更多
In the context of both the Virtual Power Plant (VPP) and microgrid(MG), the Energy Management System (EMS) is a key decision-maker forintegrating Distributed renewable Energy Resources (DERs) efficiently. TheEMS is re...In the context of both the Virtual Power Plant (VPP) and microgrid(MG), the Energy Management System (EMS) is a key decision-maker forintegrating Distributed renewable Energy Resources (DERs) efficiently. TheEMS is regarded as a strong enabler of providing the optimized schedulingcontrol in operation and management of usage of disperse DERs and RenewableEnergy reSources (RES) such as a small-size wind-turbine (WT) andphotovoltaic (PV) energies. The main objective to be pursued by the EMSis the minimization of the overall operating cost of the MG integrated VPPnetwork. However, the minimization of the power peaks is a new objective andopen issue to a well-functional EMS, along with the maximization of profitin the energy market. Thus, both objectives have to be taken into accountat the same time. Thus, this paper proposes the EMS application incorporatingpower offering strategy applying a nature-inspired algorithm such asParticle Swarm Optimization (PSO) algorithm, in order to find the optimalsolution of the objective function in the context of the overall operating cost,the coordination of DERs, and the energy losses in a MG integrated VPPnetwork. For a fair DERs coordination with minimized power fluctuationsin the power flow, the power offering strategies with an active power controland re-distribution are proposed. Simulation results show that the proposedMG integrated VPP model with PSO-based EMS employing EgalitarianreDistribution (ED) power offering strategy is most feasible option for theoverall operating cost of VPP revenue. The total operating cost of the proposedEMS with ED strategy is 40.98$ compared to 432.8$ of MGs only withoutEMS. It is concluded that each MGs in the proposed VPP model intelligentlyparticipates in energy trading market compliant with the objective function,to minimize the overall cost and the power fluctuation.展开更多
超大型城市能源系统汇集了多种分布式能源资源(distributed energy resources,DER),包括具备不确定性的新能源发电单元(如光伏、风机),具备可调性的柔性用能单元(如空调、蓄冷)以及兼具充放功能的能源产消者(如电动汽车、储能),虚拟电厂...超大型城市能源系统汇集了多种分布式能源资源(distributed energy resources,DER),包括具备不确定性的新能源发电单元(如光伏、风机),具备可调性的柔性用能单元(如空调、蓄冷)以及兼具充放功能的能源产消者(如电动汽车、储能),虚拟电厂(virtual power plant,VPP)已成为重塑上述DER生态关系并对其进行协同管控的有效途径。该文梳理了当前城市级VPP建设的目标与现状,明确了超大型城市VPP工程所面临的挑战,即对于由海量DER所诱发的多主体多目标高不确定性场景缺乏系统性的建模、仿真、推演、分析、决策与校核手段。为应对上述挑战,该文结合城市电网数字化整体架构与建设进程,提出了超大型城市VPP数字孪生技术框架,继而得以对城市能源系统的态势轨迹进行系统性地推演与分析;进一步,聚焦智能决策目标,探究了框架下的技术路径、关键技术、理论工具等。该框架已经助力临港新片区VPP工程示范落地,为城市级VPP建设提供参考。最后,展望了超大型城市下数字孪生VPP的研究方向与应用前景。展开更多
文摘With the rapid development of electronic information technology,the Internet of Things(IoT),Internet technology,and modern communication technology,people are demanding higher standards for the building environment.Especially in modern large-scale buildings with high levels of industrialization,lighting systems should also be optimized accordingly.This article explores the application path of intelligent lighting in thermal power plants for reference.
文摘An extensive survey of computer based systems that apply different approaches for faults diagnostics and identifications in nuclear power plants (NPPs) was presented. In the light of reviewed material, the classification criteria were developed. The classification of computational techniques (class of computing devices, class of programming languages, and simulation programs) was discussed. The classification of theoretical aspects applied (brief aspects, and detailed aspects) in computer based diagnostic systems were established. The classification of metholology applied (symbolic reasoning methodology, event based methodology, and function based methodology) in the diagnostic systems was also depicted. In the end, the personal comments on the reviewed material, and scope of the study were described.
文摘In the context of both the Virtual Power Plant (VPP) and microgrid(MG), the Energy Management System (EMS) is a key decision-maker forintegrating Distributed renewable Energy Resources (DERs) efficiently. TheEMS is regarded as a strong enabler of providing the optimized schedulingcontrol in operation and management of usage of disperse DERs and RenewableEnergy reSources (RES) such as a small-size wind-turbine (WT) andphotovoltaic (PV) energies. The main objective to be pursued by the EMSis the minimization of the overall operating cost of the MG integrated VPPnetwork. However, the minimization of the power peaks is a new objective andopen issue to a well-functional EMS, along with the maximization of profitin the energy market. Thus, both objectives have to be taken into accountat the same time. Thus, this paper proposes the EMS application incorporatingpower offering strategy applying a nature-inspired algorithm such asParticle Swarm Optimization (PSO) algorithm, in order to find the optimalsolution of the objective function in the context of the overall operating cost,the coordination of DERs, and the energy losses in a MG integrated VPPnetwork. For a fair DERs coordination with minimized power fluctuationsin the power flow, the power offering strategies with an active power controland re-distribution are proposed. Simulation results show that the proposedMG integrated VPP model with PSO-based EMS employing EgalitarianreDistribution (ED) power offering strategy is most feasible option for theoverall operating cost of VPP revenue. The total operating cost of the proposedEMS with ED strategy is 40.98$ compared to 432.8$ of MGs only withoutEMS. It is concluded that each MGs in the proposed VPP model intelligentlyparticipates in energy trading market compliant with the objective function,to minimize the overall cost and the power fluctuation.
文摘超大型城市能源系统汇集了多种分布式能源资源(distributed energy resources,DER),包括具备不确定性的新能源发电单元(如光伏、风机),具备可调性的柔性用能单元(如空调、蓄冷)以及兼具充放功能的能源产消者(如电动汽车、储能),虚拟电厂(virtual power plant,VPP)已成为重塑上述DER生态关系并对其进行协同管控的有效途径。该文梳理了当前城市级VPP建设的目标与现状,明确了超大型城市VPP工程所面临的挑战,即对于由海量DER所诱发的多主体多目标高不确定性场景缺乏系统性的建模、仿真、推演、分析、决策与校核手段。为应对上述挑战,该文结合城市电网数字化整体架构与建设进程,提出了超大型城市VPP数字孪生技术框架,继而得以对城市能源系统的态势轨迹进行系统性地推演与分析;进一步,聚焦智能决策目标,探究了框架下的技术路径、关键技术、理论工具等。该框架已经助力临港新片区VPP工程示范落地,为城市级VPP建设提供参考。最后,展望了超大型城市下数字孪生VPP的研究方向与应用前景。
