变电站仿真系统中的智能评价系统设计

文中针对目前计算机自动评分功能的现状,对变电站仿真系统的几种评判方案的可行性进行了分析,提出一种人机结合的变电站仿真智能评价方法。该方法通过设置串行规则、并行规则、主干规则和细化规则来实现对学员操作的复杂性、顺序不一致性等做出准确的判断,从而灵活地完成诸如变电站正常和事故巡视、倒闸操作等培训任务,给予学员全面、客观的操作评价,进一步提高了评判的客观性。该系统的构建有效地提高了变电站仿真培训的效果。     

基于PLC和紫金桥变电所倒闸操作培训系统的设计

在电力生产中,变电所的倒闸操作是一项非常重要的工作,操作错误会导致严重的设备损坏和人员伤亡,模拟倒闸操作培训系统的设计对操作人员和安全供电具有重要意义.采用可编程控制器( Programmable LogicController,简称PLC)和紫金桥组态软件对倒闸操作所涉及的开关量和控制原理提出相应的程序设计,并利用软件自身仿真和模拟屏按键操作功能实现模拟变电所倒闸操作.     

变电站智能故障仿真系统实现

仿真变电站以先进的计算机技术构建了一个“真实”、“节能”的变电站，系统采用人工智能技术和基于HLA（高层体系结构）的分布交互式仿真技术相结合的方法，研究开发变电站智能故障仿真系统，系统收集了大量变电站事故类型，如倒闸操作失误、运行中意外事故使保护动作及单相接地等异常情况，并对这些常见现象进行仿真模拟，软件采用平台设计，在画面上进行操作和事故处理时，模拟声音动画，增强了真实感。     

关于变电站变电运行中倒闸操作的思考

所谓变电站倒闸操作指的是电力系统、电气设备从某种状态改变为另外一种运行状态。其中变电站中从某种运行方式改变成其他运行方式的有序操作,一直是变电运行工作中的一个难点和重点。因此,本文分析了变电站中变电运行过程中实行倒闸操作工作的相关工作原则、操作规定、流程,从而为今后变电站中的倒闸操作提供一些参考。     

基于220kV集控变电站的仿真培训系统

随着变电站集中监控运行管理模式的发展.为满足变电站集控中心运行人员培训需求,开发了一套基于220kV集控变电站的仿真培训系统.本系统采用纯软件模式实现.以自主开发的SDSS2000支撑环境为开发平台,使用模块化建模、三维虚拟现实等技术,实现了集控中心仿真培训和变电站仿真培训功能.该系统具有运行稳定、功能完善、操作简单、培训效果良好等特点.     

论变电运维人员提高倒闸操作效率对策

倒闸操作作为变电站变电运维工作中的重要组成部分,其效率的高低对变电网运行的安全性、稳定性具有直接影响作用。本文在基于变电运维人员倒闸操作现状的基础上,对变电运维人员倒闸操作效率提升意义、存在的影响因素进行了探索,通过原因总结提出了提高倒闸操作效率的对策,以供参考。     

变电所操作票图形辅助开票系统的设计与实现

介绍了变电所操作票图形辅助开票系统的设计原理与实现方法,通过该系统,变电所操作人员可以用图形直观地描述变电所的设备线路图,并在几乎不用输入数据的情况下用鼠标或实时监控系统方便直观地改变设备状态,系统会自动生成倒闸操作语句并能模拟执行过程。该系统还具备防止误开操作票的功能,当运行人员在开操作开票时违反了设置的设备操作顺序的逻辑关系,系统会立刻报警提示,保证了变电所的安全运行,操作票条款的自动生成,大     

仿真培训中的操作票专家系统研究与应用

介绍一种应用于仿真培训的操作票系统。除了智能自动开票的功能之外,还引入了培训和考核功能。利用仿真变电站的半实物仿真环境,引入了在线培训的培训方法,允许学员对仿真设备进行实物操作,可以大大提高培训效果,具有重大的现实意义。     

具有语音提示功能的倒闸自动操作控制器

针对国内中小型变电所存在的时常发生带负荷误操作倒闸或有故障而不能即时准确操作倒闸等问题,从安全、可靠、即时准确而又经济的角度出发,提出了采用单片机AT89C51为核心的具有语音提示功能的倒闸自动操作控制系统的方案,并且给出一个具有四个主要用户的小型终端变电所的倒闸自动操作控制器原理框图、关键部分电路及程序流程图。     

PGC-IOM2000智能电气倒闸操作票专家系统在大亚湾核电站的应用

PGC—IOM2000智能操作票专家系统,目前已经在地调、县调、变电站、发电站等场所得到了广泛应用。本文介绍该PGC—IOM2000智能电气倒闸操作票专家系统在广东大亚湾核电站的应用的设计开发过程和应用效果。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。