410-2317/02 – Failures and Protection of Electrical Networks (PCHES)

Gurantor departmentDepartment of Electrical Power EngineeringCredits6
Subject guarantordoc. Dr. Ing. Zdeněk MedvecSubject version guarantordoc. Dr. Ing. Zdeněk Medvec
Study levelundergraduate or graduateRequirementChoice-compulsory
Year3Semestersummer
Study languageEnglish
Year of introduction2015/2016Year of cancellation
Intended for the facultiesFEIIntended for study typesBachelor
Instruction secured by
LoginNameTuitorTeacher giving lectures
BER306 Ing. Eduard Beránek
FUL0005 Ing. Jan Fulneček, Ph.D.
MAR0341 Ing. Oliver Marcinčin
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
Combined Credit and Examination 10+4

Subject aims expressed by acquired skills and competences

Explaining basic terms and principles of electromechanical transient effects in electric systems. After passing the subject the student is able to calculate symmetric and asymmetric short-circuit in network, ground connection in electric systems and static and dynamic stability of system. The student is also able to practise dimensioning of electric equipment according to effects of short-circuit currents. 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

Lectures
Tutorials
Experimental work in labs
Project work
Other activities

Summary

The subject includes theoretical part of extraordinary states in electric systems. It follows short-circuit in network and ground connection in electric systems. The subject explains basic terms of electromechanical transient effects in electric systems. 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:

1. Blackburn, J. Lewis: Protective relaying-principles and applications. Marcel Dekker, Inc., New York, 1998. 2. Horowitz, S. H., Phaddke, A. G.:Power system relaying. RSP Press Ltd. Tauton, 1992.

Recommended literature:

1. Machowski, J., Bialek, J.W., Bumby, J.R.: Power system dynamics and stability. Wiley, 1997. 2. 1. Anderson, P.M., Fouad, A.A.: Power system control and stability. Iowa, 1977. 3. Sleva, A. F.: Protective relay principles. CRC Press, 2009, ISBN 978-0-8247-5372-6.

Way of continuous check of knowledge in the course of semester

Processing of reports from laboratory works, design of individual projects, test. Credit conditions: Profit minimum 20 points, attendance at laboratory work.

E-learning

Další požadavky na studenta

Additional requirements for the student are not.

Prerequisities

Subject has no prerequisities.

Co-requisities

Subject has no co-requisities.

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

Conditions for subject completion

Full-time form (validity from: 2015/2016 Winter semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of points
Credit and Examination Credit and Examination 100 (100) 51
        Credit Credit 40  20
        Examination Examination 60  11
Mandatory attendence parzicipation:

Show history

Occurrence in study plans

Academic yearProgrammeField of studySpec.FormStudy language Tut. centreYearWSType of duty
2019/2020 (B2649) Electrical Engineering (3907R001) Electrical Power Engineering P English Ostrava 3 Choice-compulsory study plan
2019/2020 (B2649) Electrical Engineering (3907R001) Electrical Power Engineering K English Ostrava 3 Choice-compulsory study plan
2019/2020 (B0713A060006) Electrical Power Engineering P English Ostrava 3 Compulsory study plan
2018/2019 (B2649) Electrical Engineering (3907R001) Electrical Power Engineering P English Ostrava 3 Choice-compulsory study plan
2018/2019 (B2649) Electrical Engineering (3907R001) Electrical Power Engineering K English Ostrava 3 Choice-compulsory study plan
2017/2018 (B2649) Electrical Engineering (3907R001) Electrical Power Engineering P English Ostrava 3 Choice-compulsory study plan
2017/2018 (B2649) Electrical Engineering (3907R001) Electrical Power Engineering K English Ostrava 3 Choice-compulsory study plan
2016/2017 (B2649) Electrical Engineering (3907R001) Electrical Power Engineering P English Ostrava 3 Choice-compulsory study plan
2016/2017 (B2649) Electrical Engineering (3907R001) Electrical Power Engineering K English Ostrava 3 Choice-compulsory study plan
2015/2016 (B2649) Electrical Engineering (3907R001) Electrical Power Engineering P English Ostrava 3 Choice-compulsory study plan
2015/2016 (B2649) Electrical Engineering (3907R001) Electrical Power Engineering K English Ostrava 3 Choice-compulsory study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner