Course detail

# Electrical Power Distribution

Essential problems of power distribution. Methods of solution of the steady states of distribution networks. Identification of characteristic values of short circuits for both symmetrical and asymmetrical failures.

Language of instruction

English

Number of ECTS credits

6

Mode of study

Not applicable.

Offered to foreign students

Of all faculties

Learning outcomes of the course unit

The students get the basic facts about power distribution.
The students pass out the course are able to:
- describe basic division of power system and their separate parts
- list and describe fundamental parameters of the power network elements and enumeration of basic dependencies of these parameters
- give details of aspect of power network design and verification
- calculate the power network steady state on low and middle voltage levels and current and voltage conditions on the ultra high voltage lines
- design cross-section of line or limited power network based on power losses or voltage drop
- explain principles of parallel and serial compensations
- named type of short-circuits for symmetrical and nonsymmetrical failures
- calculate characteristic values of short circuit current for specified point in power network
- expertly estimate the value ranges of the basic calculated quantity

Prerequisites

The subject knowledge on the secondary school level is required, mainly ability to operate with goniometrical functions, complex numbers, understanding in area of The circuit theory with focus on steady state of circuit and three-phase systems. The successful completion of courses BPC-MA1B, BPC-VMP, BPC-MA2, BPC-FYZ1A, BPC-FYZ2, BPC-EL1 and BPC-EL2 are also required.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Teaching methods depend on the type of course unit as specified in the article 7 of BUT Rules for Studies and Examinations. Techning methods include lectures, computer laboratories and practical laboratories. Course is taking advantage of e-learning (Moodle) system. Students have to write specified number of laboratory protocols during the course.

Assesment methods and criteria linked to learning outcomes

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

Course curriculum

1. Basic terms
2. Equivalent networks replacing the power system (PS) elements and their parameters.
3. Basic aspects for design of electrical network
- power losses
- voltage drop
4. High and low voltage networks
- simple three-phase lines
- meshed three-phase networks
- single-phase lines and DC lines
5. Parallel and serial compensation
6. Very high voltage networks
- PS elements modeling by two-port network
7. Ratio values in three-phase systems
8. Short circuit currents and their impact on the PS elements
9. Mathematical modelling of PS when calculating the characteristic values of short circuit currents for symmetrical failures
10. Characteristic values of short circuit currents calculation for asymmetrical failures

Work placements

Not applicable.

Aims

To let the students make familiar with basic problems of power distribution.

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

BLAŽEK, Vladimír & Petr SKALA. Electrical Power Distribution. Brno: Brno University of Technology, 2006. (EN)

SCHAVEMAKER, Pieter & Lou VAN DER SLUIS. Electrical Power System Essentials. Second edition. Chichester, West Sussex: John Wiley & Sons, 2017. ISBN isbn:978-1-118-80347-9. (EN)
SAADAT, Hadi. Power System Analysis: Third edition. 3rd. PSA Publishing, 2010. ISBN 0984543864. (EN)
KERSTING, William H. Distribution System Modeling and Analysis. Fourth edition. Boca Raton: CRC Press, Taylor & Francis Group, CRC Press is an imprint of the Taylor & Francis Group, an informa business, [2018]. ISBN 9781498772136. (EN)

eLearning

Classification of course in study plans

• Programme BPA-ELE Bachelor's

specialization BPA-PSA , 2. year of study, summer semester, compulsory
specialization BPA-ECT , 3. year of study, summer semester, compulsory-optional

#### Type of course unit

Lecture

39 hours, optionally

Teacher / Lecturer

Syllabus

1. Basic terms
2. Equivalent networks replacing the power system (PS) elements and their parameters.
3. Basic aspects for design of electrical network
- power losses
- operational and momentary temperature rise of overhead and cable power lines
- voltage drop
4. High and low voltage networks
- simple three-phase lines
- meshed three-phase networks
- single-phase lines
5. Parallel and serial compensation
6. Very high voltage networks
- PS elements modeling by two-port network
7. Ratio values in three-phase systems
8. Short circuit currents and their impact on the PS elements
9. Mathematical modelling of PS when calculating the characteristic values of short circuit currents for symmetrical failures
10. Characteristic values of short circuit currents calculation for asymmetrical failures

Fundamentals seminar

12 hours, compulsory

Teacher / Lecturer

Syllabus

1. Basic requirements on power distribution
2. Conductor cross-section dimensioning in simple-type power lines by using the voltage drops and power losses
3. Parallel and series compensation
4. Calculation of symmetrical and asymmetrical short circuits

Exercise in computer lab

2 hours, compulsory

Teacher / Lecturer

Syllabus

1. Design of the cross-section of a meshed network based on voltage drops, by using PC
2. Solution of short circuit relations in power distribution network, by using PC

Laboratory exercise

12 hours, compulsory

Teacher / Lecturer

Syllabus

1. Measurements of model of low-voltage power line
2. Measurements of model of high-voltage power line for no-load state
3. Measurements of model of high-voltage power line for short-circuit state
4. Parallel compensation
5. Serial compensation