High Voltage Engineering

Course description

The electric field in high voltage engineering, methods and procedures to determine the electric field. Dielectric strength and insulation withstand. Discharges in homogeneous and inhomogeneous field. Partial discharges, atmospheric discharges, origin and type of lighting strokes. Insulating materials, gaseous dielectrics, solid and liquid insulating materials. Methods for isolation quality assessment. Distribution of potential along the long structures, ceramic type suspension insulators, transformer windings.

Generation and measurement of high AC voltages. Generation and measurement of high DC voltages. Generation and measurement of high impulse voltages. The formation of overvoltage, lightning overvoltage, system overvoltage.

Surge arresters and insulation coordination. Modeling of high voltage devices and networks and analysis of high voltage transients.

Course is carried out on study programme

Elektrotehnika 1. stopnja

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.

Learning and teaching methods

Lectures, tutorials and laboratory practice.

Intended learning outcomes

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

– describe the processes within insulators exposed to high voltage,

– understand the procedures of high voltage and currents generation and 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 concept of high-voltage protection in power networks,

– advise on the procedure for the selection of the equipment insulation level.

Reference nosilca

1. HERMAN, Leopold, PAPIČ, Igor, BLAŽIČ, Boštjan. A proportional-resonant current controller for selective harmonic compensation in a hybrid active power filter. IEEE transactions on power delivery, Oct. 2014, vol. 29, no. 5, str. 2055-2065.

2. KOLENC, Marko, PAPIČ, Igor, BLAŽIČ, Boštjan. Minimization of losses in smart grids using coordinated voltage control. Energies, Oct. 2012, vol. 5, no. 10, str. 3768-3787.

3. MAKSIĆ, Miloš, PAPIČ, Igor. Calculating flicker propagation in a meshed high voltage network with interharmonics and representative voltage samples. International journal of electrical power & energy systems, Nov. 2012, vol. 42, no. 1, str. 179-187.

4. BOŽIČEK, Ambrož, BLAŽIČ, Boštjan, PAPIČ, Igor. Performance evaluation of a time-optimal current controller for a voltage-source converter and comparison with a hysteresis controller. IEEE transactions on power delivery, 2011, vol. 26, no. 2, str. 859-868.

5. HROBAT, Primož, PAPIČ, Igor. An oscilloscope method for eliminating the interference and disturbance voltages for the earthing measurements of large earthing systems in substations. Electric power systems research, Feb. 2011, vol. 81, iss. 2, str. 510-517.

Study materials

  1. M. Babuder, Visokonapetostna tehnika, skripta, Ljubljana 2004.
  2. J. Voršič, J. Pihler, Tehnika visokih napetosti in velikih tokov, Univerza v Mariboru, FERI, Maribor 2008.

Bodi na tekočem

Univerza v Ljubljani, Fakulteta za elektrotehniko, Tržaška cesta 25, 1000 Ljubljana

E:  dekanat@fe.uni-lj.si T:  01 4768 411