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Electrical Transients in Power Systems
| Code: | M.EEC022 | Acronym: | RTSEE |
| Keywords | |
|---|---|
| Classification | Keyword |
| OFICIAL | Power |
Instance: 2024/2025 - 2S 
| Active? | Yes |
| Responsible unit: | Department of Electrical and Computer Engineering |
| Course/CS Responsible: | Master in Electrical and Computer Engineering |
Cycles of Study/Courses
| Acronym | No. of Students | Study Plan | Curricular Years | Credits UCN | Credits ECTS | Contact hours | Total Time |
|---|---|---|---|---|---|---|---|
| M.EEC | 70 | Syllabus | 1 | - | 6 | 45,5 | 162 |
Teaching Staff - Responsibilities
| Teacher | Responsibility |
|---|---|
| João Abel Peças Lopes |
Teaching - Hours
| Lectures: | 2,00 |
| Recitations: | 1,50 |
| Type | Teacher | Classes | Hour |
|---|---|---|---|
| Lectures | Totals | 1 | 2,00 |
| João Abel Peças Lopes | 2,00 | ||
| Recitations | Totals | 3 | 4,50 |
| Maria Helena Osório Pestana de Vasconcelos | 3,00 | ||
| João Abel Peças Lopes | 1,50 |
Teaching language
Suitable for English-speaking studentsObjectives
1- Understand the dynamic behavior of the electric power system when facing system disturbances.
2- Understand the mechanisms that assure stability of the system when facing disturbances.
3- Master the methodologies for the solution of the main problems related with transient phenomena in power systems, including the usage of direct methods and numerical methods.
4- Master the know-how about voltage and frequency control loops in stability studies.
5- Understand the functionalities of the AGC and the adjustments on its control parameters.
6- Understand the fast transient phenomena related with overvoltage’s and overcurrent’s that follow switching actions in the power system.
6- Understand the fast transient phenomena related with overvoltage’s and overcurrent’s that follow switching actions in the power system.
Learning outcomes and competences
The course aims to develop students' interest and knowledge and understanding of tools and methods for system stability analysis and control of power systems and analysis of switching overvoltages. The course covers, in depth, stability and switching overvoltages.
Students will develop knowledge and understanding of:
1- Acquisition and demonstration of advanced knowledge of transient phenomena and the dynamic behavior of electrical equipment and systems.
2- Acquisition and demonstration of knowledge of methodologies for solving the main problems associated with transient phenomena in electrical systems.
Working method
PresencialProgram
1- Power System Stability.
2- Synchronous generator swing equation.
3- Principles of dynamic stability.
4- Types of stability problems in the electric power system.
5- Equal area criterion for transient stability analysis.
6- Numerical methods for the solution of the swing equation (Euler and Runge-Kutta).
7- Stability of multi-machine systems.
8- Voltage and frequency control. Primary and secondary frequency control. Automatic Generation Control – AGC.
9- Methods of improving power system transient stability.
10- Switching overvoltages in the power system. Transient recovery voltages. First pole factor. Interruption of small inductive currents.
11- Peak currents following the connection of capacitive circuits.
Mandatory literature
Prabha Kundur; Power system stability and control. ISBN: 0-07-035958-XComplementary Bibliography
W. Peter Sauer; Power system dynamics and stability. ISBN: 0-13-678830-0Allan Greenwood; Electrical Transients in Power Systems. ISBN: 0-471-32650-X
Hadi Saadat; Power system analysis. ISBN: 0-07-116758-7
Abdelhay A. Sallam; Power system stability. ISBN: 978-1-84919-944-5
J. Arrillaga; Computer analysis of power systems. ISBN: 0-471-92760-0
José Pedro Sucena Paiva; Redes de energia eléctrica. ISBN: 972-8469-34-9
Teaching methods and learning activities
Theoretical classes are carried out with the support of slides, and by documents covering the entirety contents of the course. In TP classes, some problems that were previously made available to students are solved and discussed. A study of the stability of a small power system is carried out by using computer means.Evaluation Type
Distributed evaluation with final examAssessment Components
| Designation | Weight (%) |
|---|---|
| Exame | 65,00 |
| Teste | 15,00 |
| Trabalho prático ou de projeto | 20,00 |
| Total: | 100,00 |
Amount of time allocated to each course unit
| Designation | Time (hours) |
|---|---|
| Estudo autónomo | 116,50 |
| Frequência das aulas | 45,50 |
| Total: | 162,00 |
Eligibility for exams
Compliance with the attendance rules in force.
Realization of a mini-test, related to the practical part of power systems transient stability, with a minimum grade of 40%.
Fulfillment of an assignment, with a minimum grade of 40%.
Calculation formula of final grade
The evaluation comprises the following two components:
1) Distributed evaluation composed by: a) Mini-test (MT) about the practical part of transient stability; b) Assignment (AS) of a stability problem, to be solved using MatLab, Visual Basic or Excel, for which a report and program must be delivered in digital format;
2) Final exam (FE), consisting of a theoretical part (max grade of 85%) and a practical part (max grade of 15%).
The valorization (from 0 to 20) of the evaluation components is as follows:
- Mini-test (MT) - 3 values;
- Assignment (AS) - 4 values;
- Final Exam (FE) - 13 values.
To pass it is mandatory to obtain a minimum of 40% in the assignment, in the mini-test and in the final exam.
The AS component allows the assessment of CDIO skills - 2.3 and 4.3.
The FE component allows the assessment of CDIO skills - 1.3, 2.1, 2.3, 3.3 and 4.3.
Examinations or Special Assignments
During the practical part of the exams, the use of TI-Nspire (Texas Instruments) calculators is not allowed. As a general rule, it is only permitted the use of calculating machines that cumulatively satisfies the following requirements:
- do not have the ability to read files in pdf format or image (including vector formats);
- do not have the ability to perform distance communication.
Special assessment (TE, DA, ...)
Same as "normal" students. These situations do not eliminate the need for performing the mini-test and the assignment. This assignment has to be done in the same time frame as for "normal" students. Students can only take the exam with a distributed evaluation grade.
Classification improvement
Final exam (with theoretical and practical part). The classification of the distributed evaluation component is valid for all exam periods of the academic year.
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Page generated on: 2025-06-14 at 18:15:37 | Acceptable Use Policy | Data Protection Policy | Complaint Portal
Page generated on: 2025-06-14 at 18:15:37 | Acceptable Use Policy | Data Protection Policy | Complaint Portal