Fundamentals of High Voltage Engineering

Subject description

The electric field in high-voltage engineering, methods and procedures for determination of the of electric field intensity. Dielectric strength of the insulation. Discharge in homogeneous and non-homogeneous fields. Partial discharges, discharges occurring in nature, origin and types of lightning. Insulating materials, gaseous dielectrics and hard insulating materials. Methods for determination of insulation condition. Distribution of potential along long structures, insulator chains and transformer coils.

The generation and measurement of high alternating voltages. Generation and measurement of high dc voltages. Generation and measurement of impulse voltages.

The sources of overvoltage, lightning overvoltage, system overvoltage. Surge arresters and insulation coordination. Modelling of high-voltage devices and networks, analysis of high-voltage transients.

The subject is taught in programs

Electrical engineering 1st level

Objectives and competences

The student will learn the importance of high voltage in the design and operation of electricity networks and devices and will also acquire the basic knowledge of high-voltage technology and methods for testing high-voltage electric power equipment in the lab.

Teaching and learning methods

Lectures, tutorials (laboratory work).

Expected study results

After successful completion of the course, students should be able to:

– describe the processes within insulators exposed to high voltage,

– describe the procedures for insulators testing,

– use the knowledge for practical application in high-voltage equipment testing,

– analyze the voltage distribution on long structures,

– explain the importance of high voltage for planning and operation of the power network,

– summarize the procedure for the selection of the equipment insulation level.

Basic sources and literature

  1. M. Babuder, Visokonapetostna tehnika, skripta, 2004.
  2. J. Voršič, J. Pihler, Tehnika visokih napetosti in velikih tokov, Univerza v Mariboru, FERI, Maribor 2008.
  3. E. Kuffel, W.S. Zaengl, J. Kuffel: High Voltage Engineering Fundamentals, Newnes, 2000.

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University of Ljubljana, Faculty of Electrical Engineering Tržaška cesta 25, 1000 Ljubljana

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