451-0021/01 – Protections And Automatics In Electric Power Distribution (dm-OAR)

Gurantor departmentDepartment of Electrical Power EngineeringCredits4
Subject guarantordoc. Dr. Ing. Zdeněk MedvecSubject version guarantordoc. Dr. Ing. Zdeněk Medvec
Study levelundergraduate or graduateRequirementChoice-compulsory
Year5Semesterwinter
Study languageCzech
Year of introduction1992/1993Year of cancellation2006/2007
Intended for the facultiesFEIIntended for study typesMaster
Instruction secured by
LoginNameTuitorTeacher giving lectures
MED40 doc. Dr. Ing. Zdeněk Medvec
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 2+2

Subject aims expressed by acquired skills and competences

Explaining basic terms, principles and functions of electromechanical, transistor and digital protections. After passing the subject the student is able to apply the theory of protections and automatics in electric power distribution into the design of protection systems.

Teaching methods

Summary

The subject includes theoretical part of protections and automatics in electric power distribution. It follows line protections, transformer protections and anti-breakdown automatics. The subject explains basic terms, principles and functions of electromechanical, transistor and digital protections.

Compulsory literature:

Blackburn, J. Lewis: Protective relaying-principles and applications. Marcel Dekker, Inc. New York 1998. Horowitz, S. H., Phaddke, A. G.:Power system relaying. RSP Press Ltd. Tauton, 1992.

Recommended literature:

Way of continuous check of knowledge in the course of semester

E-learning

Další požadavky na studenta

Prerequisities

Subject has no prerequisities.

Co-requisities

Subject has no co-requisities.

Subject syllabus:

Lectures: Calculation of short-circuit currents for setting of protections. Basic terms of protections, operation of protections. Basic elements of protections, electromechanical and statical relays. 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: Calculation of symmetric and asymetric short-circuit currents for setting of protections. Laboratory electrical measurement at over-current protection AT31X1. Laboratory electrical measurement at impedance protection D114. Laboratory electrical measurement at transistor protection ALOX A100. Laboratory electrical measurement at digital voltage protection SPAU 330 C5. Laboratory electrical measurement at digital current protection SPAA 341 C2. Laboratory electrical measurement at digital differential protection SPAD 346 C. Setting of line over-current protections and of line short-circuit protections. Setting of line voltage protections and of line impedance protections. Setting of line earth-fault protections. Setting of transformer protections. Instrument voltage transformers and current transformers. Dimensioning of instrument current transformers. Credit exercise.

Conditions for subject completion

Full-time form (validity from: 1960/1961 Summer semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of points
Exercises evaluation and Examination Credit and Examination 100 (100) 51
        Exercises evaluation Credit 40 (40) 0
                Laboratory work Laboratory work 24  0
                Written exam Written test 16  0
        Examination Examination 60 (60) 0
                Oral Oral examination 60  0
Mandatory attendence parzicipation:

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