Electrical Energy Systems

Part of this Programme

Electrotechnical Engineering

Level of Qualification|Semesters|ECTS

Bachelor | Semestral | 6

Year | Type of course unit | Language

3 |Mandatory |Português

Total of Working Hours | Duration of Contact (hours)

168 | 75

Code

ULHT46-1-3010

Recommended complementary curricular units

n/a

Prerequisites and co-requisites

n/a

Precedences

Não

Professional Internship

Não

Syllabus

1. Power sources and electrical power systems. 2. Historical evolution of electric power systems. 3. Fundamental concepts of electric power systems. 4. Operational considerations. 5. Characterization and determination of the electrical parameters of the power transmission lines (longitudinal resistance and inductance, admittance and transverse capacitance); Equations of the long line; Modeling of lines by sports and by circuit equivalent in Pi; Voltage and current profiles along the lines; Power Limit. 6. Introduction to permanent electric power systems. Brief introduction to the criteria underlying energy flow equations.

Objectives

The main objective of this CU is to develop the capacity of analysis and design of three-phase systems from production to the transmission and distribution of electric power: A) the ability to perceive the historical evolution of electric energy systems and the reasons that motivated the current state of art. B) the ability to identify the constituent elements of electricity production and distribution systems, as well as the capacity to use the respective representation symbology. C) the ability to analyze three-phase electrical systems, identifying the main advantages and peculiarities of this type of systems. D) the ability to analyze and determine the electrical parameters of electric power transmission lines. E) the capacity of electrical dimensioning of transmission lines and respective modeling F) the ability to analyze the local and global technical problems associated with the production and transportation of electric energy

Knowledge, abilities and skills to be acquired

It is advised that students have already acquired the knowledge taught in the curricular units of Calculus and Electromagnetism

Teaching methodologies and assessment

We teach 5 hours of face-to-face classes per week: 2h theoretical, expository, 1h theoretical-practical, for problem solving and 2h laboratory, for modeling, numerical resolution and characterization of electrical energy systems. There are two types of assessment: Continuous assessment - two frequencies, in the normal class period, each weighing 40% in the final evaluation. For this modality also contributes the evaluation obtained in the laboratory component, with a weight of 20%. It is noted that, in this area, approval is only possible if the average obtained in the two written frequencies is greater than or equal to 10 values. Assessment by exam - counts the best rated exam grade. There are two normal exam times to which all enrolled students can have access and a special time to which only those students who meet the criteria for accessing the special time, as defined in the evaluation regulations, can be accessed.

References

* Apontamentos dados na disciplina de Sistemas de Energia Eléctrica - Hugo Marques.
* Power System Analysis and Design; J. D. Glover, M. S. Sarma, T. J. Overbye; Fift Edition - Cengage Learning.
* Power Systems Analysis; A. R. Bergen - Prentice-Hall.
* Redes de Energia Eléctrica - uma análise sistémica; J. P. S. Paiva ¿ IST Press.
* Power System Analysis; J. J. Grainger and W. D. Stevenson - McGraw-Hill.
* Electric Energy Systems Theory: an Introduction; O. I. Elgerd - McGraw-Hill.