SCHOOL 
OF ENGINEERING 

ACADEMIC UNIT 
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING 

LEVEL OF STUDIES 
7 

COURSE CODE 
ECE_Υ525 
SEMESTER 
5th 

COURSE TITLE 
Introduction to Power Systems 

INDEPENDENT TEACHING ACTIVITIES 
WEEKLY TEACHING HOURS 
CREDITS 

4 
4 





Add rows if necessary. The organisation of teaching and the teaching methods used are described in detail at (d). 

COURSE TYPE general background, 
SPECIALISE GENERAL KNOWLEDGE 

PREREQUISITE COURSES:

There are no prerequisite courses. It is, however, recommended that students should have at least a basic knowledge on the analysis of electrical circuit. 

LANGUAGE OF INSTRUCTION and EXAMINATIONS: 
Greek. Instructions and examinations may be given in English in case foreign students attended the course. 

IS THE COURSE OFFERED TO ERASMUS STUDENTS 
YES 

COURSE WEBSITE (URL) 
Learning outcomes 

The course learning outcomes, specific knowledge, skills and competences of an appropriate level, which the students will acquire with the successful completion of the course are described. Consult Appendix A · Description of the level of learning outcomes for each qualifications cycle, according to the Qualifications Framework of the European Higher Education Area · Descriptors for Levels 6, 7 & 8 of the European Qualifications Framework for Lifelong Learning and Appendix B · Guidelines for writing Learning Outcomes 

By the specific knowledge of this course, the student who will attend It, will be able to: 1. Understand the concepts of complex power, power factor, power factor angle and conservation of power. Solve simple threephase circuits, using the per phase analysis, to calculate any system voltage, current or power. Use the per unit system to solve single and three phase circuits. 2. Understand all different types of conventional and unconventional electric power sources including renewable generation. 3. Understand the basics of synchronous machine operation, derive the constant voltage behind synchronous reactance model and determine the effects of varying the input power and field current on the generator terminal voltage and complex power output. 4. Know the standard model of the real transformer and understand how winding losses, eddy currents, hysteresis losses, leakage flux and finite magnetic permeability affect the model parameters. Derive the voltage and current relationships for a transformer and determine the parameters of the real transformer model from opencircuit and shortcircuit tests. Use per phase analysis to solve simple systems with three phase transformers. Have basic familiarity with loadtapchanging and regulating transformers. 5. Apply concepts from basic electromagnetics to determine the inductance and capacitance of three phase transmission lines, including lines with conductor bundling. Derive the relationships between the voltage and current on a transmission line and use hyperbolic functions to solve for the voltage or current at any point along the line. Derive the π equivalent model for a line and use this model to calculate the power flow through a line. Know the limits affecting the maximum amount of power that can be transferred through a line. 6. Form the model of an interconnected power system combining the models of the individual components. 7. Have an elementary knowledge of the basic studies used to estimate the behavior of a power system under both steady state and transient operating conditions. At the end of this course, the student who will attend It, will have further developed the following skills and competences: 1. Ability to demonstrate knowledge and understanding of essential facts, concepts and theories related to the operation of the basic components of an interconnected power system. 2. Ability to exploit such knowledge and understanding to develop appropriate models of the system components. 3. Ability to exploit such knowledge and understanding to the solution of synthetic problems related to the operation of interconnected power systems under steady state conditions. 4. Ability to adopt and apply the teaching methodologies to the solution of unfamiliar advanced problems. 5. Study skills needed for continuing professional development. 6. Ability to interact with others scientist on inter or multidisciplinary problems. 7. To elaborate reliable and safe for humans and environment studies for electrical installations.


General Competences 

Taking into consideration the general competences that the degreeholder must acquire (as these appear in the Diploma Supplement and appear below), at which of the following does the course aim? 

Search for, analysis and synthesis of data and information, with the use of the necessary technology Adapting to new situations Decisionmaking Working independently Team work Working in an international environment Working in an interdisciplinary environment Production of new research ideas 
Project planning and management Respect for difference and multiculturalism Respect for the natural environment Showing social, professional and ethical responsibility and sensitivity to gender issues Criticism and selfcriticism Production of free, creative and inductive thinking …… Others… ……. 

History of Electric Power Systems. Basic operations, structure and representation of Electric Power Systems. The Greek (Hellenic) Electric Power System. Sinusoidal steady state circuit analysis, balanced threephase networks, per phase analysis. The concepts of active, reactive and complex power. Per unit system. Conventional and unconventional electric power sources: steamelectric power station, hydropower station, gas power station, combined cycle gas power station, magnetohydrodynamic generation, nuclear power station, unconventional (renewable) power sources. The synchronous machine: principle of operation, construction characteristics, induction parameters, voltage equations, Park transformation, circuit model, power relations, operating limits. Power transformer: formation of the transformers, equivalent circuits of a single phase two winding transformer, threephase transformers, multiwinding transformers, autotransformers. The transformer as a device for controlling the voltage and the flow of active and reactive power. Transmission line parameters: resistance, inductance, capacitance. Representation and performance of transmission lines. Short, medium and longlength transmission lines. Lines with distributed parameters. Equivalent circuits of lines. Powerflow through transmission lines, power circle diagrams. Transmission lines loadability. Voltage regulation of transmission lines, shunt compensation. Directcurrent power transmission. System model: singlephase equivalent, one line diagram. Elements of power system analysis: load flow analysis, fault analysis, stability analysis, voltage instability, economic operation. 
DELIVERY 
Faceto face. 

USE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY 
Lectures supported by the PowerPoint presentations. Tutorials for the solution of representative problems to clarify the special issues of the theory. All presentations are accessible by the students in the eclass platform together with solved problems. 

TEACHING METHODS The manner and methods of teaching are described in detail. Lectures, seminars, laboratory practice, fieldwork, study and analysis of bibliography, tutorials, placements, clinical practice, art workshop, interactive teaching, educational visits, project, essay writing, artistic creativity, etc.
The student's study hours for each learning activity are given as well as the hours of nondirected study according to the principles of the ECTS 


STUDENT PERFORMANCE EVALUATION Description of the evaluation procedure
Language of evaluation, methods of evaluation, summative or conclusive, multiple choice questionnaires, shortanswer questions, openended questions, problem solving, written work, essay/report, oral examination, public presentation, laboratory work, clinical examination of patient, art interpretation, other
Specificallydefined evaluation criteria are given, and if and where they are accessible to students. 
Greek language is used in the examination procedure. Examinations may be given in English in case of foreign students attended the course. Exams are written and include theoretical questions and problems. Marks are given to each and every question in order to achieve precise comparative evaluation between students. Students are also receiving pages with the basic relations of the theory. Greek grading scale: 1 to 10. Minimum passing grade: 5. Grades ≤ 3 correspond to ECTS grade F. Grade 4 corresponds to ECTS grade FX. For the passing grades, the following correspondence holds: 5 (or 5.5)↔E, 6 (or 6.5)↔D, 7 (or 7.5)↔C, 8 (or 8.5)↔B, And ≥ 910 ↔ A 
