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