面向网络态势感知的实时网络拓扑发现

通过分析比较各种网络拓扑发现方法,提出一种面向网络态势感知、基于简单网络管理协议的实时网络拓扑发现算法,其中包含网络设备存活性判断、网络设备类型判断及网络拓扑信息的存储及处理等技术,与传统的网络拓扑发现相比,具有实时性高、发现准确等优点。实验证明该算法的可行性和准确性。     

A virtual plant modeller (VPMOD) for batch-chemical processes

This paper presents a virtual plant modeller (VPMOD), which formally characterizes and integrates chemical product designs, batch-chemical equipment (plants), the real-time scheduling of chemical batches, and the control of chemical transport through the plant. These models provide a framework for agile batch-chemical manufacturing that has the ability to reroute and control chemical product flow automatically in a flexible plant subject to unexpected events, such as changes in demand patterns and equipment failure. A formal logic model is generated to control the actual system events, which are non-deterministic. A simulation environment in VPMOD is used to validate schedules and control logic based on plant models supplied by industry. The formal models have been implemented in an object-oriented language.     

A sensor-driven approach to Web-based machining

The objective of this research is to develop a framework named Wise-ShopFloor and the enabling technologies for collaborative manufacturing in a decentralized environment. Particularly, this paper presents our latest development on Web-based and sensor-driven remote machining. Once a product design is given, its process plan and NC codes are generated by using a distributed process planning (DPP) system. The NC codes are then used for remote machining via a standard Web browser and a Java GUI interface running inside the browser. In this paper, the focus is given to the concept, architecture and a prototype implementation of the enabling technology. A case study of a test part machining on a 5-axis milling machine is also completed for testing and validation. It is expected that the developed technology can be applied to design verification via remote machining as well as real part production in a distributed manufacturing environment.     

基于自适应粒子群算法的负荷最优分配

在传统经济负荷分配模型的基础上,结合节能调度的宗旨,建立了综合考虑系统有功网损最小和机组发电耗煤量最小的多目标负荷分配模型,该模型能对系统进行整体节能优化.引入了自适应权重和因子的概念,采用了一种用于多目标负荷最优分配的自适应粒子群算法,并对IEEE 57节点系统进行了仿真计算.结果表明,该方法能降低系统网损和减少机组煤耗,从而有效地节约能源,同时满足系统的安全约束.     

电网调度智能监控与事故处理辅助决策系统的研究与实施

随着电网规模的扩大,互联电网运行方式和电网稳定状况复杂多变,现有的电网EMS系统和离线分析计算决策方法,已难以满足现代电网的运行需求,迫切需要建立面向调度员的电网运行智能监控与控制一体化的决策系统,为电网调度运行人员应对电网复杂多变的运行方式和电网严重突发事件提供决策支持.针对调度运行中实际存在的问题,首先提出了安徽电网调度智能监控与辅助决策系统的研究背景及设计目标, 并详细介绍了该系统的总体结构,最后,详细分析了本系统研究及开发中的关键技术的实现,该系统已经在安徽省调进入了实施阶段.     

电网安全风险的调度应对体系研究

随着电力体制改革的不断深入以及近年来国内外相继出现的一系列大停电事故,电网安全已被上升到国家安全、社会稳定的战略高度,引起各方高度关注.电网企业将电网安全风险管理能力作为其立身之本、价值创造和赢得未来竞争的核心竞争力.基于此,重点从电网调度的角度,较为系统地探讨了电网安全风险的调度应对体系.     

基于LPC2478的网络型电能质量监测装置人机交互功能研发

基于网络型电能质量监测装置的硬件结构和功能,给出了在RealViewMDK开发环境下向LPC2478微处理器移植μC/OS-Ⅱ嵌入式实时操作系统的过程,阐述了集成μC/GUI图形接口的实现步骤。给出了LPC2478微处理器针对液晶屏AT056TN52的驱动程序及利用GPIO中断实现键盘功能的方法。根据所提出的人机交互界面设计思路以及优先级的合理分配完成了具体程序的编写,最终实现了界面友好、功能强大的人机交互功能。     

脉冲反应堆失水事故分析

针对脉冲反应堆的特点,建立了脉冲反应堆失水事故的数学模型,编制了脉冲堆失水事故仿真分析软件ＸＰＲＯＬＣＡ。该软件具有可视化的图形人－机界面接口和实时仿真功能。利用ＸＰＲ－ＬＯＣＡ对西安脉冲堆的失水事故进行了分析计算。     

基于窄带物联网的水务管网参数监测系统设计

近几年随着城市供水管道的日益复杂化,城市供水系统的监测变得难以管理.为了更好地监测城市供水系统的运行状态,借助窄带物联网(Narrow Band Internet of Things,NB-IoT)的低功耗优势,设计了一个基于NB-IoT的水务管网参数监测系统.该系统以低功耗STM32L4芯片为控制核心,实现了供水管网...