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High Voltage Engineering Education Using PSCAD/EMTDC Program Preecha Sakarung

High Voltage Engineering Education Using PSCAD/EMTDC Program Preecha Sakarung Section of Electrical Engineering, Rajamangala University of Technology Suvarnabhumi, Supanburi, Thailand. Contents. INTRODUCTION MATERIALS AND METHODS Impulse Voltage Generator

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High Voltage Engineering Education Using PSCAD/EMTDC Program Preecha Sakarung

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  1. High Voltage Engineering Education Using PSCAD/EMTDC Program Preecha Sakarung Sectionof Electrical Engineering, Rajamangala University of Technology Suvarnabhumi, Supanburi, Thailand

  2. Contents • INTRODUCTION • MATERIALS AND METHODS • Impulse Voltage Generator • Multi-stage Impulse Generator • Voltage Multiplier • RESULTS • Basic Impulse Voltage • Multi-stage Impulse Generator • Voltage Multiplier • DISCUSSION July 9-11, 2012, Thailand

  3. INTRODUCTION Problems of high voltage laboratory : • The actual HV test equipment is expensive. • The set-up process is time-consuming. • The laboratory activities are somehow dangerous. • HV technicians team is not easy to form. July 9-11, 2012, Thailand

  4. INTRODUCTION Even though an actual HV laboratory seems impractical, using a computer program to simulate high voltage circuits and demonstrate them in class is therefore an advisable solution. July 9-11, 2012, Thailand

  5. INTRODUCTION Advantage of using computer program : • different output responses can be monitored by changing parameters. • Transient phenomena (including steady-state phenomena) of each circuit component are clearly shown. • it can be recorded in high quality graphics. July 9-11, 2012, Thailand

  6. INTRODUCTION Why using PSCAD/EMTDC ? • The widely used computer software to simulate in transient phenomena is Electro-Magnetic Transients Program (EMTP). • PSCAD/EMTDC, which is developed from EMTP, is a time domain digital simulation using the trapezoidal rule of variable integration. • EMTDC thus allows more realistic representation of a system through its physical components. July 9-11, 2012, Thailand

  7. INTRODUCTION In this paper, three illustrations of HV generating circuits supported by the PSCAD/EMTDC in evaluation version 4.2.1 are shown. July 9-11, 2012, Thailand

  8. MATERIALS AND METHODS Impulse Voltage Generator Two types of impulse representing natural lightning strokes can be simulated. • impulse voltage • impulse current July 9-11, 2012, Thailand

  9. Impulse voltage & Impulse current Impulse voltage which is used in various standard techniques to study or test whether or which level the electric equipments can withstand lightning strokes and switching operations. Impulse current which is used not only to test surge arrester but to study the electric-arc and electric-plasma. July 9-11, 2012, Thailand

  10. General impulse waveform July 9-11, 2012, Thailand

  11. General impulse waveform July 9-11, 2012, Thailand

  12. Impulse voltage & Impulse current The basic circuit of a single-stage impulse generator is shown in Fig. 2 and the double exponential equation which depends on values of R and C variables is shown in equation (2). July 9-11, 2012, Thailand

  13. Impulse voltage & Impulse current July 9-11, 2012, Thailand

  14. Multi-stage Impulse Generator The corona discharge is the problem of a single-stage impulse circuit. In 1923, Marx therefore proposed a multi-stage impulse circuit. The modified three-stage circuit is presented in Fig. 3. July 9-11, 2012, Thailand

  15. Multi-stage Impulse Generator July 9-11, 2012, Thailand

  16. Voltage Multiplier July 9-11, 2012, Thailand

  17. RESULTS Basic Impulse Voltage July 9-11, 2012, Thailand

  18. RESULTS Multi-stage Impulse Generator July 9-11, 2012, Thailand

  19. RESULTS Voltage Multiplier July 9-11, 2012, Thailand

  20. RESULTS Voltage Multiplier July 9-11, 2012, Thailand

  21. DISCUSSION • The computer software like PSCAD/EMTDC is an important tool for high voltage engineering education in Thailand. • It is certain that both students and teachers will gain more experience in designing and testing the simulations in dynamic practice. July 9-11, 2012, Thailand

  22. DISCUSSION • For classroom benefits, the application of this program can simulate and present phenomena that are difficult or impossible to see even in a real HV laboratory. July 9-11, 2012, Thailand

  23. DISCUSSION • Moreover, for laboratory benefits, the preparation for laboratory activities can be done prior to the actual laboratory sessions by using the program for simulations and this results in better time management as it allows no wasting time for setting up. July 9-11, 2012, Thailand

  24. DISCUSSION • For further research, the application of this software on different topics regarding High Voltage theory should be taken into account. July 9-11, 2012, Thailand

  25. Question Please

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