Building intelligent tutorial systems for teaching simulation inengineering education

A framework for building intelligent tutoring systems (ITSs) to teach students the use of various simulation systems used in engineering education is described. Case studies to two widely used simulators in electronics education (LASAR, a digital logic simulator, and SPICE, an integrated circuit simulator) provide the basis of pedagogical methodology for teaching the use of simulators. This methodology is used to develop a tutorial environment which includes: an authoring system that enables an instructor to develop and tailor the course contents; and a course presentation system that communicates this information via a direct manipulation interface to the user. The student perceives the tutorial as a hypertext network which can be freely explored; however, the tutoring system monitors and dynamically reconfigures the accessible information according to the level and attainment of expertise by the student. The environment includes components to monitor and evaluate the performance of the student. This tutorial framework is used to create intelligent tutorial systems for SPICE and LASAR     

Automated system for measuring electrical three-phase powercomponents

This paper describes an automated system, using the software LabVIEW and an experimental setup including a digital oscilloscope equipped with general purpose interface bus (GPIB) interface, to measure the instantaneous and average power components of generic three-phase electrical systems. The system is being used as an academic laboratory tool for teaching concepts on generic three-phase electrical power systems to third-year electrical engineering students. The method is based on a generalized instantaneous power theory and can be applied to balanced or unbalanced three-phase power systems feeding linear or nonlinear loads. Details of the methodology, comprising acquisition, and signal processing are presented. Examples of three-phase balanced and unbalanced power system measurements are displayed     

Computer assisted learning in power system relaying

A computer package developed for power system protection design is used to teach protection coordination at City University, London. Examples of package use and experience gained from computer assisted learning in this subject are described. The simulation of protection systems gives students an opportunity to observe the actions of each device after they complete their protection schemes. In order to preserve flexibility within this self-learning environment, an expert system is included in the package. The use of an expert system is to make learning as effective as possible by providing guidance on the teaching material. It plays its role only if it is invoked. In other words, the expert system does not supervise learning, but can provide the necessary guidance if a request is made. If there is any error, the result of the simulation will also show the nature of the problem. The debugging function can help the students to detect the errors they have made and know how the devices work in the power system. The potential of a well-designed computer package is not only to strengthen teaching and learning, but also lead to creative contributions to the educational process. This benefit is not available through traditional lectures and textbooks     

基于Matlab的Powergui性能在电力工程教学中的应用

根据<电力系统分析>课程工程性较强的特点,结合Matlab的Powergui模块的性能,提出了将Powergui引入电力工程的教学中,并用实例分析了利用Powergui的图形化和交互功能在教学中不仅能使抽象的理论课生动、形象,而且可以使学生获得更具有实践意义的理论知识.同时,教师也可以为学生设计一些与实际工程相关的复杂问题,增强学生分析实际工程的能力.     

电力系统CAI程序包(PSATSP)的实现

本文叙述了一个新的电力系统CAI软件包的特点及其实现过程。通过算例的测试，表明此教学软件具有运行稳定、结果准确、使用方便、界面友好等优点，可用于教学、电气培训及科研工作。     

Learning benefits of structural example-based adaptive tutoring systems

This paper illustrates and evaluates a generic adaptive tutoring environment, structural example-based adaptive tutoring system (SEATS), based on the theory of cognitive knowledge acquisition. The system teaches by presenting side-by-side examples and highlighting their common structural components. This technique assists the process of generalization and reduces mapping by surface features, allowing students to apply their newly gained knowledge to different sets of problems. SEATS also implements adaptive presentation based on a straightforward model of student/user performance. SEATS was evaluated with a recursion tutorial used by 117 students in a 1-hour tutorial session. Results indicate that using adaptation in combination with the structural example-based feature produces an effect on rate and extent of learning significantly greater than when the features are used alone, or when both are absent. The study further points out that future evaluations will have to take students' curiosity into account, since many of them are likely to give at least some incorrect answers on purpose, to test the response of the system. The results indicate that building SEATS with simple adaptive mechanisms is an efficient way of teaching electronically.     

A tutoring strategy supporting system for distance learning oncomputer networks

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     

实用的可视化电力系统软件的开发与应用

随着电力系统规模的不断扩大．运用手算方法解决电力系统计算已不可能。传统的编程技术大多是基于文本操作界面的，其计算复杂且结果不直观。为此利用MATLAB与Visual C 计算机技术开发了电力系统的可视化软件。它包括电力系统短路电流计算、潮流计算、稳定分析计算等电力系统常用的13个程序．具有较强的交互性、可视性和可开发性．具有强大的矩阵处理功能和绘图功能。此软件已应用于高等院校的教学中．通过计算机软件对电力系统的模拟，加深了学生对课程内容的理解．提高了学生的计算机应用能力．是有效的计算机辅助教学手段。此软件也可用于电力系统相关部门、在职人员培训及科研人员科技开发工作中。     

数字仿真工具在《电力系统分析》教学的应用

结合《电力系统分析》的教学经验,对课程的教学改革进行了有益的探索。在课堂中引入数字仿真,通过计算机实现理论推导、计算和分析以及结果的可视化,使抽象艰深的理论能以所见即所得的形式展示。提出应用数字仿真工具辅助教学,结合工程实践和学科前沿进行讲授,并开发学生第二课堂。改革有助于加深学生对理论和工程的认识,提高学生学习兴趣,启发学生的创新性。     

一个综合智能化电力短期负荷预测系统的研究

介绍了一个模块化的综合智能化电力短期负荷预测系统,第一个愉采用人工神经网络建模,第二个模块采用自适应最优模糊逻辑系统建模,第三个模块是实现前地预测的基础上,针对其预测方法的不足,辅以模糊专家系统的修正机制,在天气变化不大且没有特殊事件发生时,可直接用自自适应最模糊逻辑系统预测方法和人工神经网络方法预测星期二到星期六的负荷,不必用模糊专家系统进行修正,对于星期日和星期一的负荷,或当天气突变,有特殊     

电力系统CAI多媒体软件的开发与应用

以电力系统的教学为研究对象,利用计算机技术开发了电力系统潮流、短路、稳定分析计算演示软件包。叙述了利用计算机交互及多媒体技术实现计算机辅助教学（CAI）教学的方法及过程。通过算例的测试,表明此软件系统具有运行稳定、结果准确、使用方便、界面友好等优点,可用于高等院校教学、在职人员培训及相关科研工作。     

电力变压器优化设计系统构建

基于综合设计、类比设计、优化设计三种设计方式构建了电力变压器优化设计系统。分析了三种设计方式的特点和相互间的联系,并以工程数据库系统为支撑,实现了各设计模块之间的数据传递。将专家系统混合推理机制融合到综合设计模块中,并采用改进遗传算法实现了优化设计模块。三种设计方式配合使用,可以灵活、可靠地获得优化设计方案。并基于本文构建的软件系统对一台110kV三绕组电力变压器进行了类比设计、综合设计和优化设计,结果表明了该软件系统的有效性。     

试论加强专业外语教学与提高高校整体教学水平及科研水平的关系

本文对电力系统及其自动化专业的专业外语教学方式、教材的选用等进行了一些初步探讨,并提出加强专业外语教学不但对培养高素质的专业人才,而且对提高高校整体教学水平,科研水平及加强学生思想工作都有不可忽视的作用。     

基于模糊互补AHP的负荷预测模拟决策

对于快速发展的地区,不同的预测方法所得的中长期负荷预测结果会相去甚远,某些预测结果甚至是无效且不可信的。所以规划决策支持系统中不仅要有多种方法的预测,还应增加其模拟决策模块。文章提出负荷预测的模拟决策,将改进的模糊互补AHP方法应用于预测模拟决策系统。计及影响电力负荷预测的各相关因素,建立电力负荷预测的多层次、多因素的决策分析结构,利用专家知识,构造具有模糊互补性的个体或群体决策的判断矩阵,并简洁而准确地计算特征向量。进一步处理特征向量作为预测决策权重,获得了满意预测决策。该方法用于规划决策支持系统中的模     

基于专家系统的城市电网规划进程智能化控制系统

城市电网规划是一项复杂的系统工程，一项完整的规划工作可能需要数十个步骤。为能更好地完成规划工作，结合关系数据库的特定存储机制和专家系统的规则推理与案例推理方法，开发了基于专家系统的城市电网规划进程智能化控制系统，对规划进程和用户工作状态进行智能化管理，从而显著提高了城市电网规划的效率。     

Impacting the future of power engineering: a focus at thepre-college level

The power industry is undergoing many new and exciting challenges. It is expected that these challenges will continue to exist and new ones will arise as the systems are pushed for greater efficiencies and economics. Therefore, as the workforce evolves from one generation to the next, it will be of paramount importance to have a continuing flow of competent power engineers available for the industry. However, to accomplish this is no small matter. The power industry must compete for students among declining engineering enrollments and what some students may view as more “glamorous” engineering professions. Therefore, it is incumbent upon the power engineering educators to seek methods of ensuring that the flow of competent power engineers is there to meet the needs of the future power industry. The purpose of this paper is to illustrate an approach taken to start to attract students at the pre-college level (high school) to careers in electric power engineering. This paper summarizes the results of a workshop designed to work with science teachers to help them better understand electricity and magnetism, show them ways of teaching these basic sciences, and relate how these skills are used by practicing electrical power engineers     

浅谈用FOXPR08．0开发电力系统潮流计算教学软件

以牛顿-拉夫逊法为例，说明了使用Visual Foxpr08．0制作电力系统潮流计算软件的过程，从而实现了电力系统潮流计算微机化。最后给出了一个算例，并将计算结果与PSASP计算结果进行对比，说明此潮流计算软件可用于教学实践与科学研究中，具有一定的实际意义。     

电磁式交流接触器CAD专家系统的研究

研究了专家系统在交流接触器设计领域中应用.本系统集电磁式交流接触器技术、专家系统技术、计算机技术和软件工程技术、三维造型技术为一体,是专家系统应用于电器设计领域内的一次尝试.实践结果表明,应用本专家系统可以有效降低交流接触器的开发周期和开发成本.