SCHOOL 
OF ENGINEERING 

ACADEMIC UNIT 
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING 

LEVEL OF STUDIES 
7 

COURSE CODE 
ECE_BΚ701 
SEMESTER 
7th 

COURSE TITLE 
Power Systems Analysis 

INDEPENDENT TEACHING ACTIVITIES 
WEEKLY TEACHING HOURS 
CREDITS 

6 
5 





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 from the teaching of this course, the student who will attend It, will be able to: 1. Design the circuit presentation of the basic components of the Power Electric Systems (PES), i.e. synchronous generators, power transformers (one and three phases), regulating transformers, transmission lines, loads and the one phase per unit equivalent circuit of the PES. 2. Construct in a systematic manner the matrix Ybus of the PES and exploit it for the solution of the steady state equations of the PES using the nodal analysis. Learn to use special computerbased techniques to accelerate the solution of largescale PES, such as the method of successive elimination, called Gaussian elimination and the triangular factorization method. 3. Apply methods to solve largescale PES and study their response under specified loading conditions in the sinusoidal steady state operation. This is the load flow study used in the optimum economic operation of the PES and for analyzing the effectiveness of alternative plans for system changes or expansion. 4. Calculate the currents under symmetrical faults and their effects on the PES components. 5. Utilize the symmetrical components method to analyze unsymmetrical faults exploiting the wellknown methods for symmetrical PES. 6. Calculate the currents for all types of unsymmetrical faults using the symmetrical components method. 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, theories and strategies related to the operation of PES in the sinusoidal steady state operation and their operation under the disturbances of faults symmetrical and unsymmetrical. 2. Ability to exploit such knowledge and understanding to the solution of synthetic problems related to the PES, such as the future changes and extension of PES and understanding of their protection. 3. Ability to adopt and apply the teaching methodologies to the solution of unfamiliar advanced problems. 4. Study skills needed for continuing professional development. 5. Ability to interact with others scientist on inter or multidisciplinary problems. 6. To elaborate reliable and safe for humans and environment studies for electrical installations. By the specific knowledge from the laboratory of this course, the student who will attend It, will be able to: 1. Understand and interpret the basic concepts of operation of all basic components (synchronous machine, inductive machine, transmission line, transformer, loads) of a Power System. 2. Familiarize himself with Power System analysis, in practice. 3. Observe and interpret the effect of active and reactive power flows on basic electric quantities of a Power System (bus voltages, currents), and vice versa. 4. Study the operation, reregulate if needed or design Power Systems from the basic level. At the end of this laboratory, 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 in order to suggest improved methods for effective Power System operation. 3. Ability to adopt and apply the teaching methodologies to the solution of unfamiliar advanced problems. 4. Study skills needed for continuing professional development. 5. Ability to interact with others scientist on inter or multidisciplinary problems. 6. 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… ……. 

The syllabus of the lectures includes: Short description of the studies included in the power system analysis. Short review of the models of the basic components of power systems: synchronous generators, power transformers, voltage regulating transformers, transmission lines, loads. Formulation of the model of the system, per unit singlephase equivalent circuit. Admittance model of the system, methods for formulating the bus admittance matrix Ybus, solution of the nodal equations by the method of successive elimination, triangular factorization. Load flow analysis, definition of the load flow problem, formulation of the static load flow equations, types of buses, solution of the load flow equations by the GaussSeidel and NewtonRaphson iterative methods, fast decoupled load flow method. Ultrafast, medium fast and slow transient phenomena in Electric Power Systems. Symmetrical short circuits analysis. Short circuit capacity. Computer method for balanced faults analysis. Symmetrical components transformation. Sequence impedances of synchronous machines, transformers and transmission lines. Connection of sequence networks for all the types of unsymmetrical faults. Analysis of unsymmetrical faults. Computer method for unbalanced faults analysis. The syllabus of the laboratory includes: Main purpose of the laboratory exercises is the practical training of students on the full set of power system analysis studies. Both steadystate and dynamic operation is examined, so that power systems are: 1) properly designed, 2) operated reliably, 3) improved or expanded correctly, 4) properly protected. Lab 1: getting familiar with basic equipment, phase sequence, active and reactive power measurement. Lab 2: active and reactive power flow on a transmission line feeding various load types. Lab 3: system operating parameters affecting active and reactive power flow. Lab 4: dependence of active power flow on delta angle difference between buses. Lab 5: the synchronous machine as a motor and as a generator. Lab 6: the synchronous compensator. Lab 7: Revision lab. Lab 8: Combinational exercise, with questions in theory, measurements and conclusions from laboratory exercises 1 to 6 or a combination of them. 
DELIVERY 
Faceto face. 

USE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY 
In lectures: Lectures are 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. In Labs: In the first, inductive laboratory exercise, students are introduced to all miniaturemodels used in all exercises throughout the semester using a PowerPoint presentation. In the same presentation, good connection practices and health and safety instructions are demonstrated. Finally, there is a portal in eClass for submission, correction and marking of laboratory reports. Furthermore, the book with the theoretical analysis of each exercise for the preparation of the students before the exercise, together with the leaflet for the completion of the lab report can also be found there. 

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. In lectures: Exams are written and include theoretical questions which are answering without further help and problems to be solved by using the book of the course. Marks are given to each and every question in order to achieve precise comparative evaluation between students. In Labs: Assessment takes place with four means: 1) Short written questionnaire (test) before each actual laboratory exercise takes place, about the basic concepts involved. 2) Oral questions assessing the comprehension of each part of the exercise. 3) Correction and marking of written reports submitted within a few days after the lab exercise is completed. 4) Combinatorial questions from all laboratory exercises at the end of the semester, in the framework of a final, revision, lab exercise. 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 
In lectures:
 Related academic journals:
In Labs: 1. Τ. Wildi: “ΈΙectrίc Power Transmission System”, Buck Engineering Co, Fanningdale, U.S.A, 1975. 2. J. J. Graingel, W. D. Stevenson: “Power System AnaIysis”, McGrawHil1, 1994. 3. G. Α. Gross: “Power System AnaIysis”, J. Wil1ey, 1986. 4. Ο. I. Elgerd: “Electric Energy Systems Theory”, McGrawHil1, 1971. 5. Α. R. Van, C. Warrington: “Ρrotective Relays. Their Theory and Practice. Vol. 1 and 2”, Chapman & HalI, 1971. 6. Α. Wright, C. Christopoulos: “Έ1ectrίcaΙ Power System Protection”, Chapman & HalI, 1993. 7. Τ. S. Madhava Rao: “Power System Ρrotectίοn. Static Relays with Microprocessor Applications”, Tata McGIawHilI, 1989. 8. “ΙΕΕΕ Recommended Practice for Protection and Coordination of Industrial and Commercial Power Systems”, ANSI/IEEE std 242, 1986. 9. Electricity Council, “Power System Protection”, Vol. 2. 10. T. Monsetn, P. H. Robinson, “Relay Systems”, McGrawHill, 1935. 11. “Automation Station Control, Supervisory and Telemetering Equipments”, Publ. C37.2, American Standards Association, Inc., 70 East 45^{th }St.,17, N.Y. 12. “Standards for the Installation and Operation of centrifugal fire pumps”, Publ. 20, National fire protection Assoc., 60 Batterymarch St., Boston 10, Mass. 13. R. Van C. Warrington, “Protective Relays. Their theory and practice”, Vol. 2, Chapman and Hall, 1974. 14. C. Mason, “The art and science of protective relaying”, Wiley, 1956. 15. “The Art of Protective Relaying and an introduction to protective relays”, General Electric Co., Schenectady 5, Ν. Υ. C. L. Schuck, “How to fuse potential transformer primary circuits”, General Electric Review, Vol. 44, p. 385, July 1941.
