### Electric Power Systems 2

#### Course Description

Brief overview of the development of electrification and electric power grids. Mechanical calculations on overhead lines. Resistance, inductance and capacitance of lines. Carson formulae. Transmission Theory. Transmission equations. Ideal lines. Mathematical models of lines. Power line transients. Distribution networks. Cable Networks. Cable dimensioning and selection.

#### Learning Outcomes

1. define the main principles of electric power transmission
2. define the main principles of electric power transmission
3. explain the function of electric transmission system elements
4. analyze and calculate electric parameters of the elements of electric transmission system
5. analyze the electric circumstances of electric transmission system
6. plan the development of electric transmission system
7. choose new elements of electric transmission system

#### Forms of Teaching

Lectures

Lectrures are given with the use of powerpoint presentations published on the web pages. The lectures are organized through 2 cycles. The first cycle consists of 7 weeks of lectures and 1st midter. Second cycle has 6 weeks of lectures and final exam. The lectures are given in total of 13 weeks, four hours per week.

Exercises

The exercises follow the lectures with practical and numerical examples. The focus is on the implementation of the solution methods.

Field work

Substation visitation

Independent assignments

Project

Laboratory

4 laboratory exercises

Continuous Assessment Exam
Type Threshold Percent of Grade Threshold Percent of Grade
Laboratory Exercises 0 % 10 % 0 % 10 %
Homeworks 0 % 10 % 0 % 10 %
Mid Term Exam: Written 34 % 25 % 0 %
Final Exam: Written 34 % 35 %
Final Exam: Oral 20 %
Exam: Written 50 % 50 %
Exam: Oral 30 %

#### Week by Week Schedule

1. Historical overview of power systems, General characteristics of power systems, Croatian power system, European power system, Development directions
2. Classification of overhead lines by their function, positions, materials and construction, Basic parts of overhead lines
3. Composite conductors, Tower construction, Modern insulators, Advanced supporting equipment
4. Conductor state equation, Critical conductor span, Critical conductor temperature
5. Electric parameters of power cables, Electrical fields in power cables, Power cable construction, materials and dimensioning
6. Carson formulae, Line resistance, Seminar, Project
7. Inductance of single and composite conductors, Inductance of three-phase transmission lines, Line capacitance, Capacitance of three-phase transmission lines, Effect of bundling, Effect of earth, Seminar, Project
8. Midterm exam
9. The long transmission line: solution of the differential equations, The long transmission line: interpretation of the equations, The long transmission line: three forms of the equations
10. Short, medium-lenght and long transmission line models, Î  and T transmission line models, Voltage, current and power calculations using the line models, Correction factors
11. Equivalent circuit of a power transformer, Determination of equivalent circuit parameters, Transformer performance
12. Transmission equations using the ideal transmission lines, Ferranti effect, Voltage and current waveforms with different loadin conditions
13. Power system elements for reactive power compensation and voltage regulation, The principles of reactive power compensation devices, Dimensioning of reactive power compensation and location selection, Seminar, Project
14. Integration of renewable power sources, AC and DC transmission line comparison, Supergrid, Seminar, Project
15. Final exam

#### Study Programmes

Elective Courses (6. semester)
Elective Courses (6. semester)
[FER2-HR] Electrical Power Engineering - module
(6. semester)
[FER3-HR] Audio Technologies and Electroacoustics - profile
Elective Courses (2. semester)
[FER3-HR] Communication and Space Technologies - profile
Elective Courses (2. semester)
[FER3-HR] Computational Modelling in Engineering - profile
Elective Courses (2. semester)
[FER3-HR] Computer Engineering - profile
Elective Courses (2. semester)
[FER3-HR] Computer Science - profile
Elective Courses (2. semester)
[FER3-HR] Control Systems and Robotics - profile
Elective Courses (2. semester)
[FER3-HR] Data Science - profile
Elective Courses (2. semester)
[FER3-HR] Electrical Power Engineering - profile
Core-elective course (2. semester)
[FER3-HR] Electric Machines, Drives and Automation - profile
Elective Courses (2. semester)
[FER3-HR] Electronic and Computer Engineering - profile
Elective Courses (2. semester)
[FER3-HR] Electronics - profile
Elective Courses (2. semester)
[FER3-HR] Information and Communication Engineering - profile
Elective Courses (2. semester)
[FER3-HR] Network Science - profile
Elective Courses (2. semester)
[FER3-HR] Software Engineering and Information Systems - profile
Elective Courses (2. semester)

#### Literature

Marija Ožegović, Karlo Ožegović (1996.), Električne energetske mreže I, FESB Split
Srete Nikolovski (1998.), Elektroenergetske mreže I, Elektrotehnički fakultet Osijek
Atif S. Debs (2012.), Modern Power Systems Control and Operation, Springer Science & Business Media
John J. Grainger, William D. Stevenson, Gary W. Chang (2016.), Power System Analysis,

#### General

ID 229832
Summer semester
5 ECTS
L1 English Level
L1 e-Learning
45 Lectures
5 Seminar
15 Exercises
8 Laboratory exercises
0 Project laboratory