Electrical Transients in Power Systems

Course Description

Basics of power system transients. Introduction to practical problems of power system transients. Analisys of power system transients in EMTP software. Analisys of electromagnetic disturbances in EMTP software.

Learning Outcomes

  1. explain transient phenomena in the electric power system
  2. calculate practical problems of transient phenomena in electrical systems
  3. apply the EMTP program in the analysis of transient phenomena
  4. apply the EMTP program in electromagnetic interference analysis

Forms of Teaching


Two school hours per week.


Two school hours of teaching over seven weeks.

Independent assignments


Week by Week Schedule

  1. Theoretical introduction to electromagnetic transients
  2. Examples of real electromagnetic transients in power systems
  3. Analytical solving of transients in simple electrical networks, Numerical solving of transients in electrical networks
  4. Numerical integration methods in analysis of electromagnetic transients
  5. Transients in circuits with linear and nonlinear elements
  6. Switching off of unloaded transmission line, Switching off of short-circuited transmission line (short line fault)
  7. Inrush currents of an unloaded power transformer and shunt reactor, Switching off an unloaded power transformer and shunt reactor (current chopping phenomena)
  8. Midterm exam
  9. Modeling of high voltage (HV) and low voltage (LV) protection devices
  10. Modeling of instrument and power transformers, Modeling of circuit breaker (electric arc and transient recovery voltages)
  11. Modeling of ferroresonance (power transformers, inductive voltage transformer)
  12. Calculation examples of transients in the Electromagnetic Transients Program EMTP, Laboratory measurements of the transient voltages and currents
  13. Transients as a source of the electromagnetic disturbances, Modeling of influence of the electromagnetic appearances on the current circuits, equipment, systems
  14. Calculation of transients in secondary circuits, Modeling of EMC in the HV substation
  15. Final exam

Study Programmes


Neville Watson, Jos Arrillaga, J. Arrillaga (2003.), Power Systems Electromagnetic Transients Simulation, IET
Peter Hasse, Institution of Electrical Engineers (2000.), Overvoltage Protection of Low-Voltage Systems, Revised Edition, IET
Dehn + Söhne (Neumarkt i.d. OPf.) (2014.), Lightning Protection Guide,

For students


ID 222484
  Winter semester
L3 English Level
L1 e-Learning
30 Lectures
15 Exercises
8 Laboratory exercises

Grading System

85 Excellent
75 Very Good
60 Good
50 Acceptable