1. Network Protection & Automation Guide, Alstom Grid, 2011. ISBN: 978-0-9568678-0-
2. IEC 60909-0 (2016): Short-circuit currents in three-phase AC systems. Part 0: Calculation of currents.
Terminated in academic year 2021/2022
Failures and Protection of Electrical Networks
| Type of study | Bachelor |
|---|---|
| Language of instruction | English |
| Code | 410-2317/02 |
| Abbreviation | PCHS |
| Course title | Failures and Protection of Electrical Networks |
| Credits | 6 |
| Coordinating department | Department of Electrical Power Engineering |
| Course coordinator | Ing. Matouš Vrzala, Ph.D. |
Subject syllabus
Lectures:
1. Definition and distribution of transient effects.
2. Calculation of short-circuit currents in complicated electric systems.
3. Characteristic values of short-circuit in general network. Parameters of elements of electric system in symmetrical systems.
4. Asymmetrical operating status of electric system. Dimensioning of electric equipment according to effects of short-circuit currents.
5. Ground connection in electric systems.
6. Basic terms of protections, operation of protections. Basic elements of protections, electromechanical and statical relays.
7. Line protections. Over-current protections, short-circuit protections, directional over-current protections.
8. Line protections. Distance (impedance) protections.
9. Line protections. Transverse and lengthwise differential protections.
10. Transformer protections. Differential protections. Frame-leakage protections, Buchholz protection.
Exercises:
1. Information about the requirements for passing the exercises. Safety considerations. The organization of the work in the labs. Instructions for elaboration of lab task.
2. Calculation of short-circuit currents according to ČSN EN 60909.
3. Calculation of symmetric and asymmetric short-circuit currents.
4. Dimensioning of electric equipment according to effects of short-circuit currents.
5. Calculation of ground connection in electric systems.
6. Setting of line over-current protections, Setting of transformer protections.
7. Laboratory electrical measurement of short-circuit currents at model.
8. Laboratory electrical measurement at digital protection.
9. Setting of line impedance protections.
10. Credit exercise.
Projects:
Calculation of symmetric and asymetric short-circuit currents
Proposal and Setting of Elektric Protections Medium Voltage
1. Definition and distribution of transient effects.
2. Calculation of short-circuit currents in complicated electric systems.
3. Characteristic values of short-circuit in general network. Parameters of elements of electric system in symmetrical systems.
4. Asymmetrical operating status of electric system. Dimensioning of electric equipment according to effects of short-circuit currents.
5. Ground connection in electric systems.
6. Basic terms of protections, operation of protections. Basic elements of protections, electromechanical and statical relays.
7. Line protections. Over-current protections, short-circuit protections, directional over-current protections.
8. Line protections. Distance (impedance) protections.
9. Line protections. Transverse and lengthwise differential protections.
10. Transformer protections. Differential protections. Frame-leakage protections, Buchholz protection.
Exercises:
1. Information about the requirements for passing the exercises. Safety considerations. The organization of the work in the labs. Instructions for elaboration of lab task.
2. Calculation of short-circuit currents according to ČSN EN 60909.
3. Calculation of symmetric and asymmetric short-circuit currents.
4. Dimensioning of electric equipment according to effects of short-circuit currents.
5. Calculation of ground connection in electric systems.
6. Setting of line over-current protections, Setting of transformer protections.
7. Laboratory electrical measurement of short-circuit currents at model.
8. Laboratory electrical measurement at digital protection.
9. Setting of line impedance protections.
10. Credit exercise.
Projects:
Calculation of symmetric and asymetric short-circuit currents
Proposal and Setting of Elektric Protections Medium Voltage
Literature
Advised literature
1. Sleva, A. F.: Protective relay principles. CRC Press, 2009, ISBN 978-0-8247-5372-6 .
2. Blackkburn, J.L., Domin T. J.: Protective Relaying Principles and Applications, CRC Press, 2006, ISBN 978-1-57444-716-3 .
3. RELION® protection and control 630 series Technical Manual. ABB Library. VAASA, Finland: ABB Distribution Solutions Distribution Automation, 2019.
4. IEEE Application Guide for AC High-Voltage Circuit Breakers > 1000 Vac Rated on a Symmetrical Current Basis. IEE Power and Energy Society. New York, USA, 2016
2. Blackkburn, J.L., Domin T. J.: Protective Relaying Principles and Applications, CRC Press, 2006, ISBN 978-1-57444-716-3 .
3. RELION® protection and control 630 series Technical Manual. ABB Library. VAASA, Finland: ABB Distribution Solutions Distribution Automation, 2019.
4. IEEE Application Guide for AC High-Voltage Circuit Breakers > 1000 Vac Rated on a Symmetrical Current Basis. IEE Power and Energy Society. New York, USA, 2016