Identifying Data 2023/24
Subject (*) High-voltage electrical installations Code 770G02027
Study programme
Grao en Enxeñaría Eléctrica
Descriptors Cycle Period Year Type Credits
Graduate 2nd four-month period
 Third Obligatory 6
Language
Spanish
Teaching method Face-to-face
Prerequisites
Department Enxeñaría Industrial
Coordinador
Méndez Sanmartín, Cristian
 E-mail
cristian.mendez@udc.es
Lecturers
Méndez Sanmartín, Cristian
 E-mail
cristian.mendez@udc.es
Web
General description Instalacións Eléctricas de Media e Alta Tensión: Elementos constituyentes. Subestaciones e Aparamenta. Cálculo de Cortocircuitos simétricos e asimétricos. Tratamento do Neutro. Tensión de Restablecimiento. Sobretensiones e Coordinación de Illamento. Proteccións eléctricas. Instalacións de posta a terra.

Study programme competencies
Code Study programme competences
A1 Capacidade para a redacción, firma, desenvolvemento e dirección de proxectos no ámbito da enxeñaría industrial, e en concreto da especialidade de electricidade.
A4 Capacidade de xestión da información, manexo e aplicación das especificacións técnicas e da lexislación necesarias no exercicio da profesión.
A5 Capacidade para analizar e valorar o impacto social e medioambiental das solucións técnicas actuando con ética, responsabilidade profesional e compromiso social, e buscando sempre a calidade e mellora continua.
A26 Capacidade para o cálculo e deseño de instalacións eléctricas de baixa e media tensión.
A27 Capacidade para o cálculo e deseño de instalacións eléctricas de alta tensión.
B1 Capacidade de resolver problemas con iniciativa, toma de decisións, creatividade e razoamento crítico.
B2 Capacidade de comunicar e transmitir coñecementos, habilidades e destrezas no campo da enxeñaría industrial.
B3 Capacidade de traballar nun contorno multilingüe e multidisciplinar.
B4 Capacidade de traballar e aprender de forma autónoma e con iniciativa.
B5 Capacidade para empregar as técnicas, habilidades e ferramentas da enxeñaría necesarias para a práctica desta.
B9 CB2 - Que los estudiantes sepan aplicar sus conocimientos a su trabajo o vocación de una forma profesional y posean las competencias que suelen demostrarse por medio de la elaboración y defensa de argumentos y la resolución de problemas dentro de su área de estudio.
C3 Utilizar as ferramentas básicas das tecnoloxías da información e as comunicacións (TIC) necesarias para o exercicio da súa profesión e para a aprendizaxe ao longo da súa vida.

Learning aims
Learning outcomes Study programme competences
Identifies, classifies and describes electrical installations in BT, MT and AT. Calculates and designs electrical installations in MT and AT. Know and select the characteristics of materials, cables, switchgear and measurement equipment used in MV and AT electrical installations. Understands, selects and properly uses electrical protection techniques. Select and use appropriate tools for the design of electrical installations in MV and AT. Know and use the specific legislation and regulations of MT and AT electrical installations. Select and understand the use of technical literature and other sources of information in Spanish and English. A1
A4
A5
A26
A27
 B1
B2
B3
B4
B5
B9
 C3

Contents
Topic Sub-topic
Summary according to the degree report Medium and high voltage installations. Switchgear
Electrical substations and transformation centers. General characteristics. Protections.
Elements and basic strategies for the protection of electrical systems.
Protection of fundamental elements of electric power systems. Surges and protection.
Introduction to insulation coordination.
Quality of service and electricity supply.
Node Admittance and Impedance Matrices Matrix equations for node analysis by direct inspection of circuits.
Matrix equations for node analysis from the connection matrices.
Definition of the node admittance matrix.
Definition of the node impedance matrix.
Incorporation of magnetic couplings.
Construction of the node impedance matrix step by step.
Symmetrical Short Circuit Calculation Balanced three-phase short circuit of a no-load line.
Balanced three-phase short circuit of a no-load synchronous machine.
Definition of transitory and sub-transitory regimes.
Calculation of symmetrical short circuits by the substitution method.
Application of the node impedance matrix to the calculation of symmetrical short circuits.
Symmetrical Components Fortescue–Stokvys theorem.
Direct and inverse transformation matrices.
Properties of symmetric component systems.
Representation of balanced charges.
Representation of a balanced system with unbalanced charge.
Sequence impedances of synchronous generators, transmission lines and transformers with different connection groups
Calculation of Asymmetric Short Circuits Rules for the construction of direct, inverse and homopolar sequence circuits.
Calculation models with symmetrical components for phase-earth, phase-phase, phase-phase-earth faults.
Open conductor faults.
Load Flows Calculation study of node voltages and load flows.
Iterative resolution methods: Newton-Raphson, Gauss-Seidel.
Substations Elements of the substations.
Bar games.
Operations with the bars in the substations.
Electric Arc Physical foundations.
Static arc characteristic in direct current.
Interruption of the arc in direct current.
Interruption of the arc in alternating current.
Circuit Interruption Disconnectors.
Power switches. Types and operation.
Protection of Power Systems Characteristics and functions of a protection system.
Voltage and current transformers.
relays. Characteristics.
Overcurrent relays.
Timed overcurrent relays.
Relays with two inputs. General formula for activating a relay.
Sequence filters.
Bar protection.
Transformer protection.
Protection of generators and motors.
Line protection.
Overcurrent protection in radial lines
Directional relays.
Distance relays (impedance).
Modified impedance relays.
Relay response to unbalanced faults.
Grounding installations Definitions. Electrodes and ground lines.
Step and touch voltages.
Distributions of potential and grounding resistance of basic electrodes.
Calculations with multi-electrode systems.
Neutral Treatment in Power Systems Definitions.
Study of the single-phase fault in a network with isolated neutral.
Study of the single-phase fault in a network with extinguishing coil.
Study of the single-phase fault in a network with the neutral grounded.
Definition of the grounding coefficient.
Transient Recovery Voltage (TRV) Study of the TRV by the current injection method.
Calculation of the TRV for a short circuit in the generator terminals.
Calculation of the TRV for a kilometer fault.
Calculation of the TRV for a fault on the line.
First pole factor.
Overvoltage and Insulation Coordination Types and origin of surges.
Traveling waves and surge propagation.
Bewley's method for calculating overvoltages.
Generation of surges in transmission lines.
Direct and indirect downloads.
Behavior of lines against lightning.
Protection of lines against lightning.
Lightning rod. Types and behavior of lightning rods.
Isolation Coordination.
Basic level of impulse isolation.
Standardized test waves for the study of overvoltages.
Voltage-time characteristic.

Planning
Methodologies / tests Competencies Ordinary class hours Student’s personal work hours Total hours
Guest lecture / keynote speech A27 A26 B3 C3 21 0 21
Problem solving A27 A26 B1 B4 B5 B9 C3 16.5 0 16.5
Laboratory practice A26 A27 B1 B3 B4 B5 B9 C3 9 0 9
Objective test B1 B5 4 0 4
Student portfolio A1 A4 A5 A26 A27 B1 B2 B3 B4 B5 B9 C3 0 90 90
Events academic / information A1 A4 A5 A26 A27 B1 B2 B3 B4 B5 B9 C3 4.5 0 4.5
 
Personalized attention 5 0 5
 
(*)The information in the planning table is for guidance only and does not take into account the heterogeneity of the students.

Methodologies
Methodologies Description
Guest lecture / keynote speech Introductory session to the subject for the introduction of the subject.
Explanation of content by the teacher.
Problem solving Students solve calculation problems proposed by the teacher.
Laboratory practice Depending on availability / Not confirmed:
-----------------------------------------------
Practices where the students are in charge of carrying out assemblies in the workshop where, according to the practice scripts of the subject, the indicated tests are carried out.

If it is not possible to allocate this bag of hours to practices, they will be reused in the master session and problem solving.
Objective test Answer to questions or solve exercises without means of consultation or with restricted means of consultation, in a specific limited space of time.
Student portfolio Autonomous work:
Study and development of skills related to the subject through the development of material or proposals discussed in the master session.

Seminars:
Presentation of specific topics related to the subject and discussion about them.

Activities that can be carried out during the school period:
In the case of a proposal by the teacher, a series of recoverable intermediate tests and supervised work could be carried out following the teacher's instructions.
Events academic / information Depending on availability / Not confirmed:
-----------------------------------------------
Events of a scientific and/or informative nature.
Lectures or invited classes given by experts or by collaborating companies related to the competencies of each subject.
Visits to industrial facilities related to the competences of each subject.

If it is not possible to allocate this bag of hours to practices, they will be reused in the master session and problem solving.

Personalized attention
Methodologies
Student portfolio
Description
The teacher responds individually or in a group to questions or queries made by students.

Assessment
Methodologies Competencies Description Qualification
Problem solving A27 A26 B1 B4 B5 B9 C3 20% of the evaluation of this section will be included in the case of carrying out an intermediate test if that were the case. If this were not the case, this percentage would be added to the objective test. 20
Student portfolio A1 A4 A5 A26 A27 B1 B2 B3 B4 B5 B9 C3 A 20% valuation of this section will be included in the case of carrying out some supervised work if the case arises. If this were not the case, this percentage would be added to the objective test. 20
Objective test B1 B5 In the correction of objective tests, the following factors may be taken into account, among other things:
- The follow-up of the instructions for its realization.
- The technical correctness of the calculations and results.
- The order, cleanliness and organization of the delivered material.
- The correct expression of the ideas and reasoning used. 		60
 
Assessment comments

The evaluation of the subject will be carried out through the following tests:

Activities that can be carried out during the school period:

    • It may be proposed to carry out intermediate tests with a value of up to 20% of the total value of the subject grade (in the case of the proposed carrying out of these, this score may be recoverable through the final objective test).
    • It may be proposed to carry out supervised work with a value of up to 20% of the total value of the subject grade (in the case of the proposed carrying out of these scores it will not be recoverable).

Final objective test:

    • Completion of this objective test will be mandatory in order to pass the subject, 40% of the test must be presented and passed correctly in order to add up the score for the activities that can be carried out during the academic period. Depending on the organization or not of the activities during the academic period, the evaluation of the punctuation of the same would be added to the final percentage of the final objective test, which could vary between 60% and 100% of the weighting of the final grade, being necessary to exceed 50% of the test to pass the subject. The assessment method will be similar for the first and second opportunities.

Note on the assessment of non-face-to-face activities:

Non-face-to-face activities:

    • The teacher will reserve the right to request additional information by video conference in order to validate the veracity of the authorship of the content presented, reserving the right to a reduction of up to 100% of the score obtained in the case of inconclusive answers that may present doubts about the work done .

Additional conditions:

Condition of not presented:

    • Students who do not present themselves for the first or second opportunity objective test will obtain the status of not presented, regardless of the evaluation of the possible activities carried out during the academic period.

Early call:

    • Students who make an early call may retain the score obtained in the activities carried out during the academic period during a call. After this, if the subject has not been passed or no test has been taken, they will be evaluated through a final objective test, scoring it at 100% of the subject's grade, and it is necessary to pass 50% of the test to pass the subject.

Academic exemption:

    • Students with an academic dispensation will be exempt from class attendance and laboratory practices. The evaluation methods will be equivalent to those used with students enrolled in the face-to-face mode.

Fraudulent performance:

    • Students who fraudulently carry out any type of assessment activity (whether carrying out activities during the academic period or in the objective test), once verified, will automatically be classified as failed (numerical grade 0) in the corresponding call for the academic year, and may not evaluate the subject until the next call for the next academic year.

Sources of information
Basic Grainger J. J., Stevenson W. D. (1996). Análisis de Sistemas de Potencia. McGraw Hill
Kothari D. P., Nagrath I. J. (2008). Modern Power System Analysis. McGraw Hill
Gross C.A. (1986). Power System Analysis. Wiley
Saadat H. (2011). Power System Analysis. PSA Publishing LLC
Bergen A.R., Vittal V. (1986). Power System Analysis. Prentice-Hall International
Suárez Creo, Juan M., Andavira (2011). Protección de Instalaciones y Redes Eléctricas. Andavira

Complementary Simón Comín P., Garnacho Vecino F. et. Al (2011). Cálculo y diseño de líneas eléctricas de alta tensión. Ibergarceta
Glover, J. D., Sarma M.S., Overbye T. J. (2011). Power System Analysis and Design. Cengage Learning
Barrero F. (2004). Sistemas de Energía Eléctrica. Paraninfo


Recommendations
Subjects that it is recommended to have taken before
Electric Machines I/770G02021
Electric Installations low voltage/770G02022
Electrical power circuits/770G02023
Fisíca II/770G02007
Fundamentos de Electricidade/770G02013

Subjects that are recommended to be taken simultaneously
Electric Machines II/770G02026

Subjects that continue the syllabus
Electric Energy Transport/770G02036

Other comments

To help achieve an immediate sustainable environment and fulfill the objective of action number 5: "Teaching and research that is healthy and environmentally and socially sustainable" of the "Green Campus Ferrol Action Plan":

The delivery of the documentary work carried out in this matter:

  • 1.1. It will be requested in virtual format and/or computer support.
  • 1.2. It will be done through Moodle, in digital format without the need to print them.
  • 1.3. If done on paper:

- Plastics will not be used

- Double-sided printing will be carried out.

- Recycled paper will be used.

- The printing of drafts will be avoided.

In addition to this, the full integration of students who, for physical, sensory, psychological or socio-cultural reasons, experience difficulties in having a suitable, equal and profitable access to university life will be facilitated.


(*)The teaching guide is the document in which the URV publishes the information about all its courses. It is a public document and cannot be modified. Only in exceptional cases can it be revised by the competent agent or duly revised so that it is in line with current legislation.