Educational guide
IDENTIFYING DATA 2024_25
Subject ELECTRICAL POWER SYSTEMS Code 00712327
Study programme
0712 - GRADO EN INGENIERÍA ELÉCTRICA
Descriptors Credit. Type Year Period
6 Compulsory Fourth First
Language
Castellano
Prerequisites
Department ING.ELECTR.DE SIST. Y AUTOMATI
Coordinador
SIMON MARTIN , MIGUEL DE
E-mail msimm@unileon.es
jjblap@unileon.es
Lecturers
BLANES PEIRÓ , JORGE JUAN
SIMON MARTIN , MIGUEL DE
Web http://calendar.google.com/calendar/embed?src=jbpua05f1sbt2mpdrvjsj5vt1o%40group.calendar.google.com&ctz=Europe%2FMadrid
General description This course aims to provide a rigorous and updated vision of the generation, transport, distribution and consumption systems of high voltage electrical energy. The main objectives of the course are aligned with the practical application of the electrical models of the elements that make up an electrical system (power transmission lines, transformers, electrical machines, systems based on power electronics and others) in the operation of the system, mainly in steady state, with an introduction to the transient state. The course aims to provide the necessary basis for access to specific subjects of control and management of electrical systems, as well as the design of electrical protection systems. Although the analysis of steady state systems will prevail, the particularities of working in transient regime will be exposed, in order to understand the stability conditions and the behavior of the system in case of disruptive events, especially electrical short circuits.
Tribunales de Revisión
Tribunal titular
Cargo Departamento Profesor
Presidente ING.ELECTR.DE SIST. Y AUTOMATI TRAPOTE DEL CANTO , FRANCISCO JAVIER
Secretario ING.ELECTR.DE SIST. Y AUTOMATI DIEZ SUAREZ , ANA MARIA
Vocal ING.ELECTR.DE SIST. Y AUTOMATI GONZALEZ ALONSO , MARIA INMACULADA
Tribunal suplente
Cargo Departamento Profesor
Presidente ING.ELECTR.DE SIST. Y AUTOMATI BORGE DIEZ , DAVID
Secretario ING.ELECTR.DE SIST. Y AUTOMATI LOPEZ DIAZ , CARLOS
Vocal ING.ELECTR.DE SIST. Y AUTOMATI GONZALEZ MARTINEZ , ALBERTO

Competencias
Code  
A17523
A17541
A17550
A17552
B5429
B5430
C4 CMECES4 That students can transmit information, ideas, problems and solutions to both a specialised and non-specialised audience
C5 CMECES5 That students have developed those learning skills necessary to undertake further studies with a high degree of autonomy

Learning aims
Competences
Knows the structure of a modern electrical power system (EPS) and its function and parameters. A17523
 B5429
B5430
 C4
C5
Represents, adopting the appropriate assumptions and simplifications, an EPS based on its topology, the parameters and electrical characteristics of the elements that compose it and the analysis regime. A17523
A17541
A17552
 B5429
B5430
 C4
C5
Calculates the power flow in a given electrical system using the most appropriate algorithm and is able to understand correctly the results obtained. A17523
A17541
A17552
 B5429
B5430
 C4
C5
Knows the degree of safety of an electrical system through the development of a contingency analysis based on power flows. A17523
A17541
A17552
 B5429
B5430
 C4
C5
Knows the function and components of the state estimator of an electrical system and its integration in the supervision and control system. Knows how to estimate the state of a simple electrical system using the Weighted Least Squares Method and understands the results obtained. A17523
A17541
A17552
 B5429
B5430
 C4
C5
Knows the phenomenon of short-circuit in an electrical network, the relationship between the transient and stationary regimes and the effect of the fault impedance in each case. A17523
A17541
A17550
A17552
 B5429
B5430
 C4
C5
Calculates the short-circuit power at any point of an electrical system by applying the appropriate calculation assumptions. A17523
A17541
A17550
A17552
 B5429
B5430
 C4
C5
Calculates the currents and voltages at any point and phase of an electrical system in an unbalanced fault or unbalance condition, applying the appropriate calculation assumptions. A17523
A17541
A17550
A17552
 B5429
B5430
 C4
C5
Understands the problem of angle and voltage stability in an electrical system and the dynamics involved as a function of the disturbance. A17523
A17541
A17550
A17552
 B5429
B5430
 C4
C5

Contents
Topic Sub-topic
I: ELECTRICAL POWER SYSTEMS Unit 1: POWER ELECTRICAL SYSTEMS
Concept and structure of a power electrical system (PES). Permanent vs. transient regime. Balanced electrical systems.

Unit 2: REPRESENTATION OF ELECTRIC POWER SYSTEMS.
Electrical diagrams. Representation and modeling of electrical components. Per unit system.
II: BALANCED STEADY-STATE ANALYSIS Unit 3: POWER FLOW IN ELECTRICAL SYSTEMS
Electrical power. Transmitted power and losses in a link. Net power at a node. Power flow in an AC network.

Unit 4: STATE ESTIMATION
State estimation in electrical systems. State estimation by Weighted Least Squares (WLS). Observability of the network. Measurement consistency.
III: ANALYSIS OF DISTURBED SYSTEMS Unit 5: THREE-PHASE SHORT-CIRCUITS
Components of the three-phase short-circuit current. Short-circuit analysis away from the generators. Short-circuit analysis close to the generators. Three-phase short-circuit currents in electrical networks. Short-circuit power.

Unit 6: ASYMMETRICAL ELECTRICAL FAULTS
Electrical systems in unbalance or asymmetrical conditions. Symmetrical components. Sequence networks. Analysis of asymmetrical faults.

Unit 7: TRANSITIONAL STABILITY.
Stability in electrical systems. Transient angle stability. Transient stability analysis. Transient stability improvement methods.

Planning
Methodologies  ::  Tests
  Class hours Hours outside the classroom Total hours
Problem solving, classroom exercises 24 48.5 72.5
 
Laboratory practicals 4 7 11
Practicals using information and communication technologies (ICTs) in computer rooms 6 10.5 16.5
 
Lecture 20 24 44
 
Mixed tests 6 0 6
 
(*)The information in the planning table is for guidance only and does not take into account the heterogeneity of the students.

Methodologies
Methodologies   ::  
  Description
Problem solving, classroom exercises They are developed in the regular classroom, in the computer classroom or, EXCEPTIONALLY, through specific sessions by group videoconference (through the official mechanisms enabled for this purpose). In the latter case, the sessions may be recorded and, if the faculty deems it appropriate, made EXCLUSIVELY available to students through the Moodle platform of the subject, being EXPRESSLY FORBIDDEN any other type of use or dissemination without the consent of the faculty. The lecturer will guide the procedure of solving problems related to the theoretical content presented in the lectures and may provide, in addition, as many support resources as deemed appropriate (recorded explanations, examples solved step by step, collections of exercises with final solutions, etc.) and will pose questions to students. Students will work in groups or individually (depending on the activity) and will face the resolution of related problems and exercises. For the realization of part or all of the proposed problems, the most appropriate computer programs will be used in each case.
Laboratory practicals Students will complete the practical program of the course in the industrial simulation equipment of the laboratory, organized in small groups. In any case, and in general, unless expressly indicated by the faculty, the attendance and completion of the practices will be MANDATORY for all students and NOT COMPATIBLE WITH THE PRACTICES PERFORMED IN OTHER COURSES. Under the guidance and supervision of the teaching staff, the students will carry out the assemblies proposed in each case, noting down the adjustments, settings and test conditions used, as well as the measurements and any other data required. Subsequently, and usually outside the classroom or laboratory, and without the supervision of the teaching staff, they must collaboratively prepare a report summarizing the activity carried out, including the results obtained and answering the questions formulated in this regard and / or collecting the conclusions reached. In the case of not being able to access the specific facilities, equivalent alternative activities will be carried out, such as virtual laboratories, additional simulation practices or online seminars, as proposed by the faculty. The students would develop the practices on their personal computers, individually or in groups using collaborative ICT tools, always under the indications provided by the teacher and, if deemed appropriate, with a session in the classroom.
Practicals using information and communication technologies (ICTs) in computer rooms They will consist of the use of specific computer programs in the field of the subject. In any case, and in general, unless expressly indicated by the faculty, attendance and completion of the internship will be COMPULSORY for all students and NOT COMPATIBLE WITH THE INTERNSHIPS PERFORMED IN OTHER COURSES OR SUBJECTS. The realization of these practices will be in small groups, sharing the same computer or using several computers, depending on the resources of the computer room and / or the student. By means of the teacher's guide and the material provided during the session, the students will have to use the proposed program and solve a practical case. Subsequently, and usually outside the classroom and without the supervision of the teacher, they must collaboratively prepare a report that summarizes the activity performed, includes the results of the simulation and answers the questions raised in this regard and / or collects the conclusions of the exercise.
Lecture They will consist firstly, in the presentation by the teacher of a theoretical presentation of the main concepts included in the program, its justification and its application to specific cases, as appropriate. Subsequently, the session will focus on answering students' doubts and questions related to the program contents. These sessions will be combined with the resolution of problems and exercises, as appropriate, related to the theoretical contents taught. During the session, the student must take the corresponding notes and participate in the proposed activities. The professor will provide, before or after the session, the material he/she deems necessary to facilitate the learning of the contents of the subject (notes, presentations, manuals, explanatory videos, references to the bibliography, etc.). The development of the lecture sessions will usually take place in the classroom. EXCEPTIONALLY, they can be held by group videoconference (through the official mechanisms enabled for this purpose). In the latter case, the sessions may be recorded and, if the faculty deems it appropriate, made EXCLUSIVELY available to students through the Moodle platform of the subject, being EXPRESSLY FORBIDDEN any other type of use or dissemination without the express consent of the faculty.

Personalized attention
 
Laboratory practicals
Lecture
Problem solving, classroom exercises
Practicals using information and communication technologies (ICTs) in computer rooms
Description
Individual or group tutorials (which may be held in person or by videoconference) may be arranged with the teaching staff by sending an e-mail request to the teacher at least 48 hours in advance.

Assessment
  Description Qualification
Laboratory practicals GROUP Delivery and evaluation (except for the exceptions approved by the faculty of the subject) of an internship report that includes ALL the reports of the laboratory practices, through ICT in computer classrooms and other activities that are proposed (e.g.: reports of seminars carried out).

The report must be structured according to the template and instructions provided by the faculty. It will be evaluated according to the specific evaluation instrument provided. 		20%
Problem solving, classroom exercises INDIVIDUAL delivery and evaluation in a limited time, of the DETAILED AND COMMENTED SOLUTION (and, if done using computer programs, of the corresponding script) of a set of problem statements proposed throughout the development of the course. In general, the solution will be evaluated taking into account the correctness of the approach to the problem and the hypotheses adopted, the resolution methodology and the results obtained, including the units of measurement. In addition, the grade of the exercise will be weighted with the correct, fair and ADEQUATELY COMMENTED co-evaluation of at least 2 exercises per student and statement following the criteria established in this regard by the faculty. 60%
Mixed tests There will be one or several multiple-choice tests or similar, of INDIVIDUAL character, to be answered in a limited time, which will evaluate mainly the theoretical contents taught in the course, although it may also include the resolution of short problems and exercises of application of the theoretical contents. 20%
Others Additionally, in case of performing other evaluable activities not included in the other sections, these may be assessed INDIVIDUALLY to improve the final grade in the subject, but will never serve to pass it. Likewise, regular attendance to the different sessions held with good attitude and ACTIVE PARTICIPATION, interest in the subject and the overall performance of the student may be considered for the rounding of the final grade in the minutes.
 
Other comments and second call
GENERAL CONSIDERATIONS:

During the realization of the face-to-face evaluation tests in the classroom, only bibliographic materials or other resources indicated by the faculty of the subject will be admitted, being expressly forbidden the use and mere possession of electronic devices turned on that enable communication with the outside of the room (cell phones, radio transmitters, etc.).

The detection of plagiarism in a work or delivery, or any irregularity of this type in the test/s or deliverables (including the use of tools based on Artificial Intelligence or any other system not authorized by the faculty of the course) will result in the loss of the right to the evaluation. Likewise, in case of any irregularity during the celebration of any evaluation test or during the evaluation of a deliverable, the faculty will apply the corresponding regulations, reserving the right to withdraw the test to the student/s immediately and seize as many elements as deemed appropriate to make them available to the Faculty Board.

In general, the grades obtained between academic years will not be retained, being mandatory for the student to attend and perform all the evaluable activities of the course.


FIRST CALL FOR EVALUATION:

In order to pass the evaluation of the subject it will be necessary to pass a final grade higher or equal to 5 out of 10, obtained by averaging in a weighted way each of the evaluation activities described. In order to average, a grade higher or equal to 5 out of 10 must be obtained in all the evaluable activities (and their parts if they have them), admitting, exceptionally, to average with an evaluable activity with a lower grade, but in any case, always higher or equal to 3.5 out of 10.

If in one of the evaluation tests the required minimum is not reached in one or more of the parts, the total grade of the test will be the higher of the parts not passed.

In case of not reaching the criteria to pass the subject, the grade will be obtained as a weighted average of the grades obtained, being the maximum grade of 4.9 out of 10.

Failure to complete, deliver or participate in one or more of the evaluable activities of the course will be understood as a waiver of the evaluation and will result in a grade of NOT PRESENTED.


SECOND EVALUATION ROUND:

The same evaluation activities and their weighting in the final grade will be considered as in First Call, with the exception that all tests will be INDIVIDUAL.

In order to be able to average, a grade higher or equal to 5 out of 10 must be obtained in all the evaluable activities (and their parts), with no exceptions allowed. In order to pass the course an overall grade higher or equal to 5 out of 10 must be obtained. 

In case of not reaching the criteria to pass the course, the grade will be obtained as a weighted average of the grades obtained, being the maximum grade of 4.9 out of 10.The student will be considered as NOT PRESENTED if he/she does not attend the totality of the parts that constitute the evaluation test in the Second Call, even if he/she has delivered all the evaluable activities. If at least one of the evaluable activities has been completed or handed in, it will be understood that the student HAS ATTENDED the evaluation exam, and the rest of the activities not submitted or completed will be graded with 0.

If the student has passed one or more of the evaluable activities with a grade higher or equal to 5 out of 10 in the First Call, he/she will be able to keep the grade obtained in them only for the evaluation in the Second Call, having to present the parts not passed and reaching, in each of them, the minimum grade of 5 out of 10. In case of presenting again or delivering any of the evaluable activities passed in the First Call, only the grade of the test or delivery made in the Second Call will be considered.

Sources of information
Access to Recommended Bibliography in the Catalog ULE

Basic A. Gómez Expósito, Análisis y operación de sistemas de energía eléctrica, McGraw-Hill, 2002
J. Duncan Glover et al., Power System Analysis and Design, Cegage Learning, 2012
F. Barrero, Sistemas de Energía Eléctrica, Paraninfo, 2004
A. Gómez Expósito et al., Sistemas Eléctricos de Potencia. Problemas y ejercicios resueltos, Prentice Hall, 2003

Complementary

The bibliography and specific and complementary resources will be indicated in each unit of the Contents Program.

Recommendations


Subjects that it is recommended to have taken before
COMPLEX VARIABLES / 00712317
ELECTRICAL ENGINEERING / 00712323
THEORY OF ELECTRICAL CIRCUITS / 00712324
POWER SUBSTATIONS AND LINES / 00712328
 
Other comments
It is recommended to have basic knowledge of scientific programming and office applications.