Sistemas de Energia Elétrica

Linear Algebra, Calculus, Electromagnetism, Electrical Circuit Theory 

The teaching methodologies, that promote active and collaborative learning, follow a temporal sequence that enables students to acquire theoretical concepts, solve a set of exercises and carry out practical case studies.

Goals: Electrical Power Systems (EPS) is a course designed for students of all branches of electrical engineering, and it’s a standard content. Students begin by learning a general description of an EPS in the aspects of production, transmission, distribution and consumption. Then, mathematical models of the major components are developed. That will allow the learning of basic analysis tools, in this case the power flow analysis. Finally, protection systems and SCADA is studied in a more descriptive way. In practical classes, are presented and studied problems that allow the students gradually consolidate the knowledge that was given in theoretical lectures. Here, concepts of financial and economic analysis are also presented, that allow students to understand how the electricity price it’s formed.

Skills: Understand the organization, operating principles and mode of operation of an Electric Power System (EPS). Know the basic tools for modelling and analysis of an EPS. Know how to model the different components of an EPS (transformers, synchronous machines, electric power lines and loads). Learn how to solve the power flow problem (Gauss-Seidel method, Newton-Raphson method, Fast Decouple Load Flow method and DC model). Know the equipment and operating principles of the protection systems of an EPS. Understand and apply concepts of financial and economic analysis in determining the costs of producing electricity.

1. Fundamental concepts of Electric Power Systems (EPS): overview of an EPS; organization of the electric sector; forms of electricity production and its environmental impacts; load diagrams; fundamentals of analysis of power grids.
2. Study and modelling of the system components: transformers; synchronous machine; transmission lines; loads.
3. Analysis of power flow: per unit system; construction of admittance matrix; basic equations of a power flow; Gauss-Seidel method; Newton-Raphson method; decoupling principle and Fast Decoupled Power Flow (FDLF) method; DC model.
4. Protection systems fundamentals: types of short-circuits; protection systems; surges; protection with voltage dischargers; insulation coordination.
5. Concepts of economic and financial analysis: value for money; cost of energy produced; market prices; economic evaluation of investment.
6. Introduction to SCADA and Control Centres, EMS/DMS, importance and functions.

NAO

Mandatory literature (available in the ISEC library)

Sucena Paiva, J. P. (2007). Redes de Energia Eléctrica, uma Análise Sistémica (2ª ed.). Lisboa: IST Press
Grainger, J. J., & Stevenson, W. D. (1994). Power System Analysis. New York: McGraw-Hill

Complementary Bibliography

Saadat, H. (2011). Power System Analysis (2^nd ed.). Boston: McGraw-Hill
Weedy, B. M., Cory, J., Jenkins, N., Ekanayake, J. B., & Strbac, G. (2012). Electric Power Systems ( 5^th ed). Chichester: Wiley
Castro, R., & Pedro, E. (2015). Exercício de Redes e Sistemas de Energia Eléctrica (2ª ed.). Lisboa: IST Press

Available Support Material
Lecture notes, notes of practical classes and examples of practical exercises.