Lectures:
Calculation of short-circuit currents for setting of protections.
Basic terms of protections, operation of protections.
Line protections. Over-current protections, short-circuit protections, directional over-current protections.
Line protections. Voltage protections (undervoltage and overvoltage protections).
Line protections. Distance (impedance) protections.
Line protections. Transverse and lengthwise differential protections.
Transformer protections. Differential protections.
Transformer protections. Frame-leakage protections, Buchholz protection.
Differential bus-bar protections, earth-fault protections.
Instrument transformers. Instrument voltage transformers, instrument current transformers.
Instrument voltage transformers. Static instrument error, instrument error at transient processes, dimensioning of instrument current transformers for differential protections, high-speed impedance protections and slow protections.
Digital distance protections.
Anti-breakdown automatics.
Exercises:
Information about the requirements for passing the exercises. Safety considerations. The organization of the work in the labs. Instructions for elaboration of lab task.
Calculation of short-circuit currents for setting of protections.
Setting of line over-current protections and setting of line impedance protections.
Setting of transformer protections.
Instrument voltage and current transformers
Dimensioning of instrument current transformers.
Credit exercise.
Laboratory:
Laboratory electrical measurement with transformer protection ABB RET630.
Laboratory electrical measurement with feeder protection ABB REF630.
Projects:
Proposal and Setting of Electric Protections Medium Voltage
Proposal and Setting of Electric Protections High Voltage
Calculation of short-circuit currents for setting of protections.
Basic terms of protections, operation of protections.
Line protections. Over-current protections, short-circuit protections, directional over-current protections.
Line protections. Voltage protections (undervoltage and overvoltage protections).
Line protections. Distance (impedance) protections.
Line protections. Transverse and lengthwise differential protections.
Transformer protections. Differential protections.
Transformer protections. Frame-leakage protections, Buchholz protection.
Differential bus-bar protections, earth-fault protections.
Instrument transformers. Instrument voltage transformers, instrument current transformers.
Instrument voltage transformers. Static instrument error, instrument error at transient processes, dimensioning of instrument current transformers for differential protections, high-speed impedance protections and slow protections.
Digital distance protections.
Anti-breakdown automatics.
Exercises:
Information about the requirements for passing the exercises. Safety considerations. The organization of the work in the labs. Instructions for elaboration of lab task.
Calculation of short-circuit currents for setting of protections.
Setting of line over-current protections and setting of line impedance protections.
Setting of transformer protections.
Instrument voltage and current transformers
Dimensioning of instrument current transformers.
Credit exercise.
Laboratory:
Laboratory electrical measurement with transformer protection ABB RET630.
Laboratory electrical measurement with feeder protection ABB REF630.
Projects:
Proposal and Setting of Electric Protections Medium Voltage
Proposal and Setting of Electric Protections High Voltage