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The study of power system of relays requires some previous experience in this field. Laboratories focusing on teaching and researching the area of power-system protection have therefore been amply reported. However, these facilities require the actual presence of the students in the laboratories. To overcome this problem, a power-system-relaying remote laboratory has been developed. To implement this laboratory, a testing system of the relay operating characteristic, together with Matlab-based software, was developed. This remote laboratory enables real power-system-relaying experiments through the Internet. In fact, the user can remotely test a real relay disoperation. This system will therefore allow proficient analysis of sensitivities to relay settings and network configurations. Index Terms--Distance learning, remote laboratory, testing system of relay operating characteristic.

This paper describes the authors' experience in the assessment of laboratory activities based on an open source software package for power system analysis, namely, Power System Analysis Toolbox (PSAT). PSAT is currently used in several universities for both undergraduate and graduate courses. PSAT has also its own Web forum, which provides support to students and researchers all around the world, thus resulting in an almost unique example of 'virtual laboratory' over the Internet. This paper attempts to answer through a variety of real-life examples the following open questions: What are the practical and pedagogical advantages of using an open source software with respect to proprietary software for power system analysis? What happens if a power system virtual laboratory is freely available on the Web? What is the difference between a class-based and a Web-based virtual laboratory? Index Terms--GNU Octave, Internet, Matlab, power system analysis, stability, time domain simulations, virtual laboratories.

Traditionally, the simulation of transient and voltage stability in power systems has been constrained to domain-specific tools such as Simpow, PSS/E, ETMSP, and EuroStag. While being efficient and thereby able to simulate large systems, their component models are often encapsulated and difficult or impossible to examine and modify. Also, these simulators often require substantial training and are therefore not ideal for normal classroom use. For academic and educational use, it is more important that the component modeling be transparent and flexible, and that students quickly get started with their simulations. This paper describes a freely available power system library called ObjectStab intended for power system stability simulations written in Modelica, a general-purpose object-oriented modeling language. All component models are transparent and can easily be modified or extended. Power system topology and parameter data are entered in one-line diagram form using a graphical editor. The component library has been validated using comparative simulations with EuroStag. Index Terms--Object-oriented methods, power system dynamic stability, power system simulation.

This paper presents a Simulink-based educational tool developed for the purpose of illustrating power system control and stability notions as well as introducing students to realistic, though tractable in size, design problems. Relevant courses are taught to last-year undergraduate as well as graduate students at the University of Liege, Belgium, and the National Technical University of Athens, Greece. After a brief description of the corresponding curricula, the paper describes the simulation tool and gives examples of problems and assignments given to the students. Index Terms--Computer simulation, Matlab, power system control, power system stability, Simulink.

A voltage flicker teaching facility is developed for electric power quality education. The facility consists of a single and three-phase voltage flicker generator, measurement devices, and a lamp test system. The modulation amplitudes and frequencies based on the UIE 10 Hz equivalent voltage flicker value ([Delta]/[V.sub.10]) can be arbitrarily assigned by software with high accuracy. Three experiments can be offered to students, including the introduction of voltage flicker with finite or infinite frequency components and the effect of voltage flicker on lamps. This hardware teaching facility can give students a realistic and practical concept about voltage flicker. Key Word : Electric Power Quality, Voltage Flicker, Lamps, Power Engineering Education.

The Power Systems program at the Naval Postgraduate School is a unique academic endeavor which seeks to both educate Navy officers in relevant advanced technologies and to complement the research efforts on-going at the government laboratories. The move toward incorporating more-electric technology into naval combatant shipboard power systems and the requisite analysis of such finite-inertia, stiffly-connected systems have driven the development of a program that intermixes power electronics, electric machines, and microprocessors. Through work emphasizing analysis, hands-on hardware investigation and simulation, the students are exposed to the diverse issues encountered in power system research. The students are also presented unique opportunities to interact on-site with various government laboratory sponsors to further draw the connection between theory and hardware implementation. Keywords - power engineering education, modeling, simulation and power laboratory.

This paper presents the concept of overall power system reliability evaluation using an educational test system. The paper extends an existing test system by developing the necessary distribution and subtransmission networks. The extended test system has all the main facilities, such as generation, switching stations, transmission, sub transmission and radial distribution networks found in a practical system. The test system, is however, sufficiently small that students can analyze it using hand calculations or by developing small computer programs to fully understand the reliability models and evaluation techniques. Overall power system reliability evaluation is concerned with providing acceptable customer service. This is an important concern in today's electric utility environment. This should therefore be an essential element in teaching power system reliability evaluation at either the graduate or undergraduate level. The extended test system presented in this paper and the concepts presented assist in satisfying this requirement.

This paper describes the main features of four design modules that form part of the curriculum for the final year power engineering students at the Nanyang Technological University, Singapore. Through the use of these modules, the students gain an insight into the various aspects of power engineering including power electronics and drives - and this will hopefully help them in a better understanding of the practical aspects of power engineering, and therefore make them better engineers in the power industry. The four modules described are Generating Capacity Expansion Planning, Rectifier and DC Motor Control, Power Systems Operations Planning, and Security Enhancement using Optimal Power Flow. Keywords: power system design, power engineering education, undergraduate curriculum, power system planning.

The recent availability of Electromagnetic Transient Programs with graphical front ends now makes it possible to put together models for circuits and systems in a manner similar to the connection of components in a laboratory. In the past, the non-graphical EMT Programs required considerable expertise in their use and thus distracted the students into the details of simulation. The introduction of a graphical simulation based laboratory into Undergraduate and Graduate Engineering Programs is presented, based on the PSCAD/EMTDC program. The philosophy behind the design of suitable example cases is presented within the framework of an Undergraduate Power Electronics Course, an HVdc Transmission Course and a course on Power System Protection. Keywords: Electromagnetic Transients Simulation, Graphical User Interface (GUI), Power Systems Curricula, Power Electronics, HVDC Transmission, Power Systems Protection.

Today's power systems have become so complex that it is not easy for the system dispatcher to realistically predict the results of outages. The situation is compounded whenever the power grid is not in its 'normal' configuration due to maintenance switching or equipment failure. The authors feel that the DTS is an excellent tool that can be used to teach the dispatcher how to react under these conditions. In this paper, the authors present an on-line implementation of the DTS which allows the user to * initialize the DTS to an EMS disturbance using data that was captured at the time of the disturbance; and * place the DTS in a playback mode and go back to specific times in the scenario. The former feature allows the analyst to investigate EMS disturbances and then train the various dispatchers to be able to recognize such disturbances and to recover from them when they occur. The latter feature allows the instructor (with the trainee) to review and re-experience desired portions of the scenario. It is the authors' feeling that these two features will help the EMS operational staff understand their power system better and help their dispatchers in dealing with operational problems associated with the proper running of the system. Keywords: Disturbance Data Re-initialization, DTS snapshot, Dispatcher Training Simulator (DTS)

This paper describes a newly installed laboratory module microcomputer-based static reactive power compensator (SVC) in detail to teach students how an SVC affects system voltage, load balancing, power factor, and transmission line losses. The SVC is merged into an old power system simulator for extensive power engineering education. The structure of the SVC is thyristor controlled reactors with fixed capacitors (TCR-FC). Two control algorithms, feedback control and feedforward control, are developed and compared. For the purpose of program flexibility and portability, a VME-Bus based microcomputer is used to synthesize the controller of the SVC. Several suggested experiments are given to show the effects of the SVC on distribution system compensation. The SVC greatly promotes the performance of the power system simulator. keywords: power engineering education, reactive power, microprocessor applications, simulator.

A Microsoft[R] Windows[TM] graphical package to facilitate the teaching and learning of symmetrical component is described in this paper. This package is written in Microsoft Visual Basic 3.0. This software calculates and displays graphically, the ABC sequence and the corresponding symmetrical component phasors. Students can manipulate the graphical displays by keyboard input or by mouse operation. The objective of this package is to help the students to better understand the various aspects of symmetrical components' analysis through a user-friendly Graphical User Interface(GUI). KEYWORDS: WINDOWS, Symmetrical Components, Graphical User Interface(GUI).

This paper describes a user-friendly power simulation program for teaching power system operations and control. The motivation for the development of the program is to provide students with a simple and useable tool for gaining an intuitive feel for power system operations. This Microsoft Windows[TM] based program simulates power system operation over a specified time period (of typically several hours to a day). Students dynamically interact with the simulated system through various windows, including a one-line display. The use of data files and option windows allows the program to simulate a wide variety of different power systems and operating problems. Efficient programming results in a modest program size of just 450k, allowing for easy distribution to students.

This paper presents the design of a laboratory. with software and hardware structures for digital and physical simulation in the area of Power Systems Control Education. The hardware structure includes a physically based model of the power system. The software structure includes a special man-machine interface designed with a graphical user interface approach. This interface allows the user full control over the simulation and provides facilities for the study of the response of the simulated system. This approach is illustrated with the design of a control system for a physically based HVDC transmission system model.

The use of a personal computer based interactive software to aid instruction in power system operation is described in this paper. be used as a teaching aid for the course The software is designed to 'Power System operation' at National Taiwan University. The Main programs included in the package include short term load forecasting and unit commitment. Other supporting routines include power flow analysis, static security assessment, small signal stability analysis, and transient stability analysis. To promote the students' interest in the course, a user friendly interface and interactive windows have been developed. The integrated software package proves to be useful for educational and research purposes.

The University of Florida's electric power engineering program is changing educationally to better train its students. This has come about because electric power systems are being penetrated increasingly by new technologies, such as power electronics, for the purpose of improving their energy performance and control capabilities. At times the introduction of such new technologies in the power system may cause both the utility and its customers operational problems in terms of the quality of power being delivered and its actual energy usage. These problems are addressed in this paper by an examination of the key requirements needed in a lab to assess the power quality and energy performance of devices in the power system, in both a stand alone and systems context, and by computer simulations and physical testing. The power quality area is used as an example of how the lab is used in education.