Course content

The course presents methods for accurate modeling and calculation of transients in electrical power systems. Main content: - Summary of types of transients. - Modelling of components with focus on overhead lines, cables and transformers, but also machines and circuit breakers are covered. - Analysis of travelling wave problems. Formulation and solutions in time and frequency domain when losses and distortion is taken into account. Fourier transforms, modal analysis, and vector fitting. - Description and analysis of ferro-resonance and inrush currents in transformers.

Learning outcome

Knowledge: After completing the course, the student shall: - understand the principles for accurate modeling and calculation of overvoltages in power systems - understand the feasibility of models for various phenomena - have achieved a detailed understanding in methods for advanced modeling of transmission lines, cables and transformers valid under stationary and transient conditions.

Skills: After completing the course, the student shall be able to: - carry out transient calculations in EMTP programs - evaluate the validity of models for various transient phenomena

Learning methods and activities

Colloquiums and lectures. Calculation and computer excercises, MatLab, Maple, EMTP. Laboratory exercises. The course is given every second year.

Specific conditions

Recommended previous knowledge

Power system transient, basic course

High voltage engineering

Electrical machines, electromagnetics

Required previous knowledge

Basic course in overvoltages or insulation coordination.

Course materials

Power System Transients - Parameter determination, Ed. Juan A. Martinez-Velasco, CRC Press 2010.