溪洛渡水电站灌浆网络管理信息系统设计与开发

为科学有效地对现场灌浆质量和进度进行控制和管理,设计了溪洛渡水电站灌浆管理信息系统,该系统采用B/S体系结构,并结合数据库技术、无线网络技术、图形图像技术,将灌浆工程数据采集、数据实时监控、数据统计分析、三维可视化相结合,可对灌浆盲区进行无线组网、将灌浆数据实时传输至Internet、对灌浆数据进行统计分析、生成灌浆形象展示图形和图表、对现场异常进行预警,有助于提高工程管理水平。     

国家电网数据中心一体化监控系统的部署实施

目前,节能减排已成为全社会的共识.在数据中心的日常维护及运行中,一体化监控系统将很好地诠释这一点.国家电网公司一体化监控系统实现了对数据中心内各个智能化系统,包括环境监控、安防、消防、BA、电力系统监控、RFID资产管理、MMT气流与热场管理等子系统的统一监控管理,能够实时地监控相互关联的数据,并即时进行调整安排,极大...     

基于PDMiner大数据挖掘平台的电力系统安全评估及故障诊断系统

电力系统中的数据复杂多样,电力大数据的挖掘处理是电力公司面临的难题之一。阐述了电力大数据发展现状,将电力云概念引入到电力系统大数据分析之中,提出了基于云计算理论的大数据挖掘平台PDMiner,介绍了其整体架构和原理,针对电力大数据的平台架构和关键技术,开发了一套基于PDMiner平台的电力系统安全评估与故障诊断系统,该系统配置在SCADA/EMS的数据管理子系统上,提高了数据处理的效率,并且能准确提取到故障类型、风险区域等数据背后的准确信息。     

电力系统图库模一体化的研究

摘要： 在电力系统中图库模一体化技术的研究和开发仍然处在初级阶段。文中所研究的方向是建立在SVG技术和IEC61970标准的基础之上,并与XML技术、Hibernate等技术相结合,设计出了电力系统的一个图形、数据、模型一体化的解决方案。     

智能算法在10kV线路低电压运行数据分析中的应用

本研究探讨了智能算法在10kV线路低电压运行数据分析中的应用。通过电力系统监测设备、传感器和SCADA系统获取的数据,本文实现了对电力系统的实时监测和性能分析。研究中包括数据的采集、清洗、异常检测、特征选择、数据挖掘等关键步骤,以提高电力系统的可靠性和运行效率。本文还介绍了机器学习算法和决策树在电力系统故障检测中的应用,为电力系统运维提供了有力的支持。     

基于MapInfo平台的大坝安全监测信息管理系统

基于GIS技术和MapInfo软件平台,采用MapBasic语言设计并开发了大坝安全监测信息管理系统,可以快速处理海量数据,具有实时查询、多维图形显示等特点,弥补了大坝监测系统中图形与数据联系较弱的不足,进一步提高了系统的数据查询和可视化功能。     

基于Maplnfo平台的大坝安全监测信息管理系统

基于GIS技术和MapInfo软件平台,采用MapBasic语言设计并开发了大坝安全监测信息管理系统,可以快速处理海量数据,具有实时查询、多维图形显示等特点,弥补了大坝监测系统中图形与数据联系较弱的不足,进一步提高了系统的数据查询和可视化功能.     

基于SSM框架的大坝监测数据管理系统设计

针对目前大坝安全监测存在数据不能实时计算分析、展示,长期运行产生的大量数据主要靠人工整编且易出错等问题,结合现代信息化技术手段,以Java作为服务开发语言,设计了基于Spring+SpringMVC+Mybatis(SSM)框架的大坝安全监测数据管理平台,用于大坝监测数据的管理和分析,实现数据采集、存储、查询、计算分析、绘图、生成报表报告、实时监控及远程展示等功能,同时亦为监测仪器管理提供了可视化界面,方便仪器管理。结果表明,基于SSM框架的大坝安全监测数据管理系统实时反馈效果好,操作便捷,数据存取性能好、可视化程度高,便于大坝监测数据的管理与实时分析,为大坝安全运行与决策提供支撑。     

热电厂生产统计分析计算机子系统设计

在热电厂的管理信息系统中，生产统计分析子系统是重要的子系统之一，它为生产统计分析提供大量的原始数据和分析数据。文中主要从数据组织、统计报表生成及界面设计等几个方面阐述该子系统的设计思想及某些细节。     

光伏发电预报资料采集处理子系统设计及实现

为实现资料采集处理子系统能为太阳能光伏发电预报系统的稳定运行提供基础数据保障,设计了资料采集处理子系统结构模块图、处理资料格式规范及业务数据流程,实现了内部业务流程与实际预报业务和信息流程的紧密结合,能将太阳能光伏预报系统所需资料定时存储到数据库中,井将原始文件备份到指定目录,在系统界面中可方便地查询各种入库资料,具有良好的可扩展性.     

Intelligent user interface for expert systems applied to powerplant maintenance and troubleshooting

A research and development project is under way to specify, design, construct, and evaluate a user interface system to meet the requirements of a knowledge-based system for gas turbine electronics equipment maintenance and troubleshooting. The user interface is a portable device with text display, video and overlay graphics display, voice recognition and speech production, special-function keypad, and printer. A modular software structure based on a serial communications protocol between the user interface device and expert system host computer provides flexibility, expandability, and a simple, effective user-interface dialog     

基于OPC规范的火电厂监控信息系统研究

主要研究基于COM／DCOM技术的组件化程序设计思想,设计火电厂厂级监控信息系统。监控信息系统的通信接口,采用符合OPC规范的标准OPC接口（OPC客户程序和OPC服务器程序）,充分发挥OPC接口同一、开放的特性,为火电厂组成开放的、灵活的厂级监控信息系统提供了一种新的实现途径。     

保护定值在线校核系统与故障信息系统接口技术及应用

基于数据库访问和数据模糊匹配技术的故障信息系统,设计了继电保护定值在线校核系统与故障信息系统的接口技术并开发相应的接口程序,利用分层分类的链表数组结构对定值进行存储以提高数据访问效率,采用基于改进编辑距离的分层逐级匹配方法实现了厂站、一次设备、保护装置和定值项名称等数据的模糊匹配,并按优先级顺序对多源定值信息进行了融合。实例应用验证了该接口方案的有效性,可为继电保护定值在线校核系统提供所需的待校核定值。     

Least-squares RBF-FD method for the incompressible Stokes equations with the singular source

In this article, we propose the least-squares RBF-FD method for the incompressible Stokes equations with the singular source along the interface. First, we apply Green’s formula to derive interface conditions, then by employing the RBF-FD method to directly discretize the spatial operators, a least-squares system about the incompressible Stokes equations with interface conditions is constructed. The discrete least-squares system is derived by introducing the weight coefficient. We obtain the error bound of discrete least-squares system using the RBF interpolant theorem. Some numerical examples are provided to show the convergency and efficiency of the least-squares RBF-FD method for the incompressible Stokes equations with the singular source.     

Molecular dynamics simulation of interfaces and microstructure evolution during high-speed sliding

Three-dimensional nonequilibrium molecular dynamics simulations are performed to investigate the tribological characteristics of the high-speed sliding system. A sliding simulation model with two blocks is built. The friction force, the evolution of the structure of interface and the temperature profiles of the sliding system are obtained. The relationship among tribological characteristic, friction heat, and interface structure is studied. The influence of the sliding velocity is investigated. The velocity field of the interface is also considered. The theoretical analysis of the mixing layer is also built to study the flow and heat transfer characteristics in the interface. The results show that structure of the interface can greatly affect the friction force and temperature rising. The structure factors and the velocity field of the interface evidently suggest that atomic flow during sliding is similar to fluid flow, which is beneficial to reduce the friction force and heat dissipation. With the increase of sliding velocity, the thickness of the mixing layer increases, the steady state friction force decreases. The atom distribution and the radial distribution function of the interface indicate that the degree of short-range disorder of the mixing layer increases.     

一种新型柴油机的热功参数分布式检测系统的设计

介绍了以８０５１单片机为基础,５８６为主机的多功能柴油机热功参数分布式检测系统的设计思想和工作流程,分析了系统的模拟电路和数字接口电路,并给出了接口硬件电路和实例。     

水电工程EPC项目接口管理的灰色聚类评价模型研究

鉴于水电工程EPC项目中接口管理的重要性与复杂性,在分析水电工程EPC项目接口管理的概念与分类的基础上,建立了接口管理评价指标体系,并引入灰色聚类理论建立接口管理的评价模型,通过案例验证了该模型的有效性。     

微电网对上级电网频率及电压的支持

基于美国西部联合电网(Western Systems Coordinating Council,WSCC)三机九节点系统,建立了一个带有逆变并网接口的输电网模型。以光伏发电为例,利用逆变并网接口模型模拟了微电网与上级输电网的连接。结果表明在上级输电网的有功与无功负荷发生突变时,微电网的接入使上级输电系统的有功与无功功率能够实现就地平衡,并保持系统频率与电压幅值的稳定。     

Suppression of melt convection in a proposed Bridgman crystal growth system

Numerical simulations are performed for Bridgman crystal growth of several semiconductor materials, such as InAs, InSb, GaSe, CdTe, PbTe, and GaP. For materials with low Prandtl and low Grashof numbers, melt convection is weak and the traditional Bridgman technique is a suitable growth process. For the materials with high Prandtl numbers in their melt status and the growth system with high Grashof number, the temperature field and the growth interface are significantly influenced by melt flow, resulting in the complicated flow pattern and curved interface shape. A new Bridgman crystal growth system is proposed to suppress convection and improve solidification interface shape by cooling of the top melt. The results obtained from the proposed design demonstrate that melt convection may be controlled by adjusting the design parameters. Further, parametric studies are performed to determine the influence of the control parameters on melt flow and solidification interface.     

Application of artificial neural networks to the condition monitoring and diagnosis of a combined heat and power plant

The objective of this study has been to create an online system for condition monitoring and diagnosis of a combined heat and power plant in Sweden. The system in question consisted of artificial neural network models, representing each main component of the combined heat and power plant, connected to a graphical user interface. The artificial neural network models were integrated on a power generation information manager server in the computer system of the combined heat and power plant, and the graphical user interface was made available on workstations connected to this server.