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为了监测断路器操作回路中跳/合闸回路、压板和保护出口接点的状态,并对其薄弱环节故障进行预警以避免断路器误动或拒动,设计了断路器操作回路的智能化监测系统。该系统改进了现有跳/合闸回路,并给出了系统中元件的选型与参数整定依据,能够实现跳/合闸回路的全工况监视和保护。为了实时监测断路器操作回路压板和保护出口接点的状态,实现压板误操作和保护出口接点故障报警,该系统采取了配合使用电感式接近开关和霍尔电压传感器的方法,并给出了传感器的具体安装位置。该系统采用单片机处理并上传传感器采集的现场信息,利用LabVIEW编写后台软件界面,能够实现实时状态显示、人机交互、历史数据存储和故障报警等功能。 相似文献
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PLC智能化电力设备故障诊断系统 总被引:1,自引:0,他引:1
设计了基于PLC的智能化电力设备故障民系统,结构上可分为信息模块,输入模块,处理模块,控制模块和输出模块,控制模块是故障民系统的核心,它根据控制指令,利用专家知识,完成从特征到故障原因的识别工作,PLC的开关量输入模块作为开关量故障信号的输入装置,模拟量输入模块可用作模拟量故障信号的输入装置,这两种模块都有方便地实现对设备的在线监测。 相似文献
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卢流发 《国外电子测量技术》2006,25(10):65-67
电路模块是电子设备中不可或缺的核心组成部件,是电子设备功能和品质的决定因素.保证电路模块具有完整的功能和良好的性能因此成了一个非常关键的课题.在科研生产中,对电路模块的检测通常是一项费时费力的工作,需要消耗大量的人力、物力和时间,而且质量难以得到保证.针对在各种不同电路模块进行全面检测过程中所存在的困难,本文讨论了如何利用虚拟仪器构架一个智能检测系统,不但能够满足这种复杂的检测要求,而且能够最大程度实现自动化、智能化,提高检测质量和检测效率,并详尽地记录检测结果. 相似文献
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论述了快速和善充对光伏充电器的重要性,分析了铅酸蓄电池充放电过程的化学反应机理以及光伏电池的输出特性,提出了一种由单片机控制并始终处于脉冲式充电方式下的光伏智能控制系统,其能在晴朗的白天充分利用阳光,从而实现快速充电;也能有效避免蓄电池的极化和硫化,从而延长蓄电池使用寿命,减小更换蓄电池的成本。仿真和实验结果表明,该充电系统可智能地实现光伏快充和善充。 相似文献
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《Electric Power Systems Research》2002,62(3):161-171
In this paper, an intelligent tutoring system (ITS) is proposed for a power plant simulator. With a well designed ITS, the need for an instructor is minimized and the operator may readily and efficiently take, in real-time, the control of simulator with appropriate messages he(she) gets from the tutoring system. Using SIMULINK and based on object oriented programming (OOP) and C programming language, a fossil-fuelled power plant simulator with an ITS is proposed. Promising results are demonstrated for a typical power plant. 相似文献
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A knowledge based tutoring system is used to support the education of power engineering students. The aim of this project is to make teaching and learning more productive and efficient by employing modern technologies. It seeks to find new methods to teach large numbers of students with no increase in staff. The tutoring system is based on an expert system shell. It provides a functionally interacting set of theory and problems, and supports student progress through monitoring and assessment. This paper describes the development of the tutoring system for teaching electrical engineering subjects, and in particular, fault analysis in power systems. The expert system based software has been successfully used by power engineering students. They found this software easy to use and understand, and it has become an extra teaching tool 相似文献
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基于图论的电力系统短路故障分析方法 总被引:1,自引:0,他引:1
利用图论在分析短路故障中节点间关系的高效率性,通过对节点相互关系进行处理,从而找出与发生故障节点相关联的有效路径.在分析过程中以寻求节点最短路径为基础,介绍了两条图论算法,并且这种算法适用于实际系统中其它节点选取以及关联路径的判断. 相似文献
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设计了双先入先出(FIFO)高速数据传输模型,提出了一种基于可编程逻辑门阵列(FPGA)和先进RISC机器(ARM)的实时数据采集、处理与远程传输的设计方案.该方案采用了ARM+ FPGA+ IPC的体系结构,集数据采集、处理、通信、管理功能于一体,实时监测现场多台SF6高压断路器的温度、电气、机械、绝缘等各项状态参数... 相似文献
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With the fast development of computer networks, people can access information and communicate with others without being constrained by space and time. Through network communications, people can discuss things with others to solve their problems. Therefore, how to implement distance cooperative computer-assisted learning (CAL) systems on computer networks becomes an interesting and challenging issue. In this paper, the authors present their work of applying a fuzzy expert system to support the tutoring strategies of a distance cooperative CAL environment. They analyze the special needs for developing CALs in the distance cooperative environment, and define a set of parameters, which is concerned with effectiveness of learning through networks. They also model the behaviors of the students on networks through their online operations. A theoretical framework and some methodologies are proposed based upon the concepts and the techniques of fuzzy expert systems to cope with the problems. A fuzzy expert system is then implemented to guide the students during the learning processes and to help the CAL system to present feasible subject materials to the students. By evaluating their approach with a small group of college freshmen, they conclude that this research is worth further studying 相似文献
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目前,池州电力通信系统已广泛采用光纤通信,因电力老线路较多而光缆多采用普通光缆,运行中普通光缆线路易受外力破坏,维护量大。为了解决光缆网络快速发展而维护力量薄弱这一矛盾,有必要建设光缆自动监测系统,以便通过对光缆线路的实时监测,及时发现和处理线路故障。文中简要介绍了光缆监测系统的基本原理及目前应用最为广泛的三种实时监测方式,并结合实际,提出了池州电力光缆线路自动监测系统建设方案。 相似文献
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介绍了宁夏电网电能量计量计费系统数据传输方式的数字化改造,此项工程的改造采用了先进的2M数字电路的传输方式,提高了电量计费系统数据采集的及时性和可靠性。 相似文献
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以电动汽车为研究对象,低压5 k W异步电机为控制对象,完成驱动系统设计。以TMS320F2812DSP芯片为控制核心,采用MOSFET并联模块作为逆变器的开关器件,其中还包括了辅助电源、信号采集调理、驱动等电路设计,搭建了一个带速度传感器的电动汽车异步电机控制硬件电路。 相似文献