Basic knowledge of electrical engineering , basics knowledge of three-phase alternating current systems, structure of electrical transmission and delivery systems, power delivery principles and relationship, physics of operation of high- and medium voltage transformers and switchgear, calculation methods for asymmetrical operation of three-phase networks, neutral grounding methods, relationship between fault currents and voltages. 

A kötelező előtanulmányi rend az adott szak honlapján és képzési programjában található.

Understanding physics processes of electromagnetic transients in power systems, being familiar with the origin of transients and their consequences to the operation of electrical energy system. The aim of the course is to help students in understanding transient phenomena appearing at  abnormal conditions (e.g. switching on or off, during short-circuit and fault clearing), to be familiar with design practices and protection principles against overvoltages and to get deep understanding about operation of advanced solution methods to reduce the risk of failures. Practical lectures are dedicated to develop simplified equivalent circuits and calculation methods. Students will have an opportunity to learn how to operate modern power system transient simulation software tools and how to create digital models and evaluate results obtained by computer simulation.

The role of electromagnetic transients in the operation and reliability of the electric power systems.

a) Electromagnetic wave propagation

- Ideal single phase – earth return system: Laws governing wave propagation in an ideal single-phase-ground return system. Characteristics and calculation methods of transients resulting from multiple reflexion of electromagnetic waves.

- Exercise: Characteristics of electrical circuits composed by lumped and distributed parameter elements, transients on transmission lines caused by line energization, de-energization and reclosing, protection measures against over-stresses, discharging lines and cables, transients caused by short distance fault current interruption.

- The purpose and construction rules of reference-circuits. Reference circuits of electrical systems of mixed structure with lumped inductance and capacitance.

+week: 1x2 hours lectures

#week: 1x2 hours lectures, 1x2 hours exercises or computer lab 

During the semester: Personal appearance at least 70% of lectures and 80% of exercises

One mid term test with grade > 40%

At the end of semester: Oral exam. 

Final mark: mid-semester test weighted by 20% + mark of oral exam weighted by 20%

One repeated test for the midterm tests during the semester.

One additional repetition of the mid-term test during the repetition week.

Lecture notes from the homepage of the course at the web page of the Department (EduID login required).

Recommended book: Alan Greenwood: Electrical transients in power system, JWS, 1991