High Voltage Engineering


Acquisition of knowledge related to the scientific fundamentals of the establishment and propagation of overvoltages and the establishment of disruption, and knowledge of technical solutions for overvoltage protection.

Acquisition of abilities to analyze and design high voltage related protection systems

Acquisition of knowledge related to finite element simulation tools, focused on high voltage applications

General characterization





Responsible teacher

Nuno Manuel Ortega Amaro


Weekly - 4

Total - 56

Teaching language



Approtiate knowledge related to a masters course, focusing on:

    electrical engineering (electrical machines and associated fundamentals)
    circuit analysis (including three-phase circuits)
    integral calculus


  • Domingos Moura, Técnicas de Alta Tensão, edição “Técnica – A.E.I.S.T.”, Lisboa, 1980
  • Kuffel, E. ; Zaengl, W., High-Voltage Engineering, Pergamon Press, Oxford, 1984
  • Naidu,M.; Karamaju, V., High Voltage Engineering, McGraw-Hill, New York, 1995
  • Hileman, A.R., Insulation Coordination for Power Systems, Marcel Dekker, Inc, 1999
  • Kundur, P., Power System Stability And Control, 1994

Teaching method

The different concepts are explained by the lecturer using adequated multimedia material and using real power systems examples as much as possible

The students will solve problems shared in the course materials in a semiautonomous way. oral communication are incentivized.

The students have contact with a finite element analysis software tool.

Evaluation method

The evaluation in this course follows one of two options:


Option A - 3 Minitests (MT1, MT2 and MT3) + 3 lab works (TL1, TL2 and TL3)

Theoretical Component (CT) = (0,1667*MT1 + 0,50*MT2 + 0,3333*MT3) >= 9,5 val.

     MT3 grade >= 7 val.

Laboratorial Component (CL) = (0,375*TL1 + 0,3125*TL2 + 0,3125*TL3) >= 9,5 val.

Final Grade = 0,60*CT + 0,40*CL >= 9,5 val.


Option B - 1 Final Exam (EF) + 3 lab works (TL1, TL2 and TL3)

Theoretical Component (CT) = l*EF  >= 9,5 val.

Laboratorial Component (CL) = (0,375*TL1 + 0,3125*TL2 + 0,3125*TL3) >= 9,5 val.

Final Grade = 0,60*CT + 0,40*CL >= 9,5 val.


In both options, studens will be approved in the course only if their final grade and also the grades in each one of the two components (CT and CL) is equal or higher than 9,5 values (scale from 0 to 20).

The grade of the laboratorial component (CL) may be subjected to oral discussion with the lecturer.

Subject matter

1. Introduction to power quality and high voltage network assets
2. Magnetic and electric field and potential functions (revision)
3. Study of overhead lines (parametrization of overhead lines)
4. Disruption in gases, solids and liquids. Types of discharges and their characteristics. Corona effect.
5. Altmosferic discharges and electrogeometric model.
6. High voltage measurements.
7. Design of Protection devices


Programs where the course is taught: