Course detail

Protection of electrical Power Equipment

FEKT-COJZAcad. year: 2019/2020

Electrical power systems protection at failure state. Line, busbar, transformer, generator and motor protection. Digital protection integrated systems.

Language of instruction

English

Number of ECTS credits

6

Mode of study

Not applicable.

Learning outcomes of the course unit

The students pass out the course are able to:
- give details of fundamental types of protection relays and its basic characteristics
- explain the principles of main types protection relays
- calculate short circuit situations in the power network
- design of setting overcurrent protection of small systems
- describe automatic reclosing

Prerequisites

The knowledge of the course of Distribution of Electric Energy is required. Student has ability to calculate the three-phase initial short-circuit current in the radial power system.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Teaching methods include lectures, computer laboratories and practical laboratories. Course is taking advantage of e-learning (Moodle) system. Students have to write a single project/assignment during the course.

Assesment methods and criteria linked to learning outcomes

The course is evaluated by student’s activity in the lessons, individual work and it is finished by exam valuation. The exam has practical and theoretical parts.
Students can obtain:
up to 40 points from the tutorial lessons (tests, individual work and protocols from laboratory exercise)
up to 60 points from the exam (30 points practical part and 30 points theoretical part)
Detailed requirements for completion of the course are specified by a regulation issued by the lecturer responsible for the course and updated every year.

Course curriculum

1. Electrical power systems failure state. Sorting of protection (relay, static, digital).
2. Symmetrical and unsymmetrical short circuit fault calculation.
3. Voltage and current transformer.
4. Line protections. Fuses and circuit breakers.
5. Overcurrent relays. Current and time setting.
6. Distance protections. Characteristics and setting.
7. Distance protections supplemental equipment. Wrong measuring cause.
8. Comparative protections. Comparative protection ties.
9. Auto - reclosing automatics. Protection cooperation near auto reclosing.
10. Busbar protections. Transformer protections.
11. Generator protections.
12. Motor protections. Earth fault protections
13. Integrated intelligent systems protection.

Work placements

Not applicable.

Aims

Knowledge of the method of electrical power systems protection at failure state.

Specification of controlled education, way of implementation and compensation for absences

The content and forms of instruction in the evaluated course are specified by a regulation issued by the lecturer responsible for the course and updated for every academic year.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

SLEVA, Anthony F. Protective relay principles. Boca Raton: CRC Press, c2009, xvii, 349 s. ISBN 978-0-8247-5372-6.

Recommended reading

ZIEGLER, Gerhard. Numerical differential protection: principles and applications. 2nd ed. Erlangen [Germany]: Publicis Pub., 2012, 287 s. ISBN 9783895783517.

Classification of course in study plans

  • Programme EEKR-BC Bachelor's

    branch BC-SEE , 3. year of study, summer semester, optional specialized

Type of course unit

 

Lecture

39 hours, optionally

Teacher / Lecturer

Syllabus

Electrical power systems failure state. Sorting of protection (relay, static, digital).
Symmetrical and unsymmetrical short circuit fault calculation.
Voltage and current transformer.
Line protections. Policy and stock.
Overcurrent relays. Current and time setting.
Distance protections. Characteristics and setting.
Distance protections supplemental equipment. Wrong measuring cause.
Comparative protections. Comparative protection ties.
Auto - reclosing automatics. Protection cooperation near auto reclosing.
Busbar protections. Transformer protections.
Generator protections.
Motor protections. Earth fault protections
Integrated intelligent systems protection.

Fundamentals seminar

6 hours, optionally

Teacher / Lecturer

Syllabus

Fault calculations at point of protection - enter data for computer preparation.
Overcurrent protection time and current setting.
Switchgear 110/22 kV protections.

Exercise in computer lab

4 hours, compulsory

Teacher / Lecturer

Syllabus

Fault calculation by PC.
Digital protections setting for laboratory measuring.

Laboratory exercise

16 hours, compulsory

Teacher / Lecturer

Syllabus

Digital overcurrent protection calibration by D/A relay test system.
Static difference protection transformer characteristic measuring.
Distance protection switch characteristics setting control.
Integrated numerical generator protection testing.
Digital motor protection function control.
Differential line protection measuring.