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.

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 CFY1 and 2, CMA1, 2 and 3 and CEL 1 and 2 are also required.

Co-requisites

Not applicable.

Recommended optional programme components

Not applicable.

SAADAT, Haidi. Power system analysis. 3rd ed. United States of America: PSA Publishing, 2010, xix, 752 s. ISBN 978-0-9845438-0-9.
Blažek,V.,Skala,P.: Electrical Power Distribution, 2006.
KERSTING, William H. Distribution system modeling and analysis. 3rd ed. Boca Raton: Taylor & Francis, c2012, xv, 439 p. ISBN 978-1-4398-5622-2.
Paar, M., Collection of Examples for Exercices for Course CDEE, 2015

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 dispose specified number of homework during the course (recommended).

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 parts.
Students can obtain:
up to 50 points from tutorial lessons (tests, individual work and protocols from laboratory exercise)
up to 50 points from the exam (25 points practical part and 25 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.
The exam of the course could be held both, in presence and online.

Language of instruction

English

Work placements

Not applicable.

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
- 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

Aims

Course aim is to introduce to students the 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.

Classification of course in study plans

• Programme EEKR-BC Bachelor's

branch BC-SEE , 2. year of study, summer semester, 6 credits, compulsory

#### Type of course unit

Lecture

39 hours, compulsory

Teacher / Lecturer

Fundamentals seminar

6 hours, compulsory

Teacher / Lecturer

Exercise in computer lab

4 hours, compulsory

Teacher / Lecturer

Laboratory exercise

16 hours, compulsory

Teacher / Lecturer

eLearning