Electric Power Systems Quality

lelec2595  2020-2021  Louvain-la-Neuve

Electric Power Systems Quality
Due to the COVID-19 crisis, the information below is subject to change, in particular that concerning the teaching mode (presential, distance or in a comodal or hybrid format).
5 credits
30.0 h + 30.0 h
Q2
Teacher(s)
Language
English
Prerequisites
Students are expected to master the following skills : knowledge and practical application of electrical and electromechanical converters theory, as they are covered within the courses LELEC1370 and LELEC1310
Main themes
  • The topic of voltage disturbances and quality of electric power supply, positioned in the general context of electromagnetic compatibility (EMC)
  • Types and characteristics of the main disturbances, disturbance sources, methods of measurement and evaluation, propagation mechanisms, adverse effects, immunity
  • Modelling and calculation of electrical power networks (public or industrial) and electrical installations in disturbed operation
  • Technical solutions to solve power quality problems
Aims

At the end of this learning unit, the student is able to :

1 In consideration of the reference table AA of the program "master in electrical engineering ", this course contributes to the development, to the acquisition and to the evaluation of the following experiences of learning:
  • AA2.1, AA2.2, AA2.3
  • AA3.3
  • AA5.4, AA5.6
  • AA6.1
Specifically, at the end of the course, studens will be able to :
  • Identify, describe and analyze a problematic situation regarding electrical voltage disturbances (diagnosis, curative approach)
  • Prevent problematic situations at the project stage of electrical installations (preventive approach)
  • Propose realistic solutions from the technical and economic perspectives Spe
To this end, they wil be able to :
  • Describe precisely and explain physical phenomena and mechanisms underlying power quality,
  • Select measurement techniques, adequate analysis and assessment methods,
  • Model and quantify problematic situations,
  • Interpret and correctly apply the standardization concepts,
  • Analyze and interpret information from technical and scientific literature relating to issues addressed in the course
Transversal learning outcomes:
  • Be familiar with standardization practices in electrotechnology,
  • Structure, detail and present an engineering calculation report
 
Content
- Generalities about electromagnetic compatibility and basic concepts used in voltage quality (short-circuit power concept, types of networks - TN, TT, IT ... - Basic concepts of standardization, compatibility levels, immunity levels, general principles of measuring methods, basics of quality statistical analysis, quality indices etc.)
- Reliability and continuity of power supply
- Rapid changes of the load; voltage fluctuations and frequency deviations
- Voltage distortion, harmonics, transients and interharmonics (in the frequency range from 0 to 150 kHz)
- Unsymmetrical three-phase systems (voltage unbalance)
- Voltage dips and short interruptions
- Voltage swells and overvoltages
- For each family of studied phenomena: sources and disturbances generating mechanisms, modelling, special techniques of measurement and evaluation, propagation of disturbances in the network, adverse effects, immunity of sensitive loads, choice of technological solutions (at the source, in the network or at the level of disturbed installations).
Teaching methods

Due to the COVID-19 crisis, the information in this section is particularly likely to change.

- The course consists of lectures that aim to describe the general context, key concepts, methods of calculation and evaluation as well as give and discuss some specific technological information.
- Practical sessions (supervised exercise sessions) are organized. These exercises can make use of dedicated software tools
Evaluation methods

Due to the COVID-19 crisis, the information in this section is particularly likely to change.

Students are assessed during an oral examination comprising:
  • The resolution of a problem, sketching a realistic but inevitably simplified situation compared to a complex real industrial case (numerical exercise, aiming primarily to assess understanding phenomena, mastering modelling and computational techniques, together with the fast quantified assessment of a situation)
  • A discussion realizing a broad sweep of the whole matter, starting from relatively general questions or typical industrial case studies.
Students may have the courses and their personal notes supports.
Homework is proposed during the semester and is evaluated. It counts for half of the points of the final grade, provided that the student has obtained at least 50% of the points for the exam.
In case the student does not obtain at least 50% of the points for the exam, the final grade is equal to the grade obtained for the exam.
Other information
It is recommended to have previously completed the course LELEC2520 or an equivalent
According to the opportunities and practical availability, the course can be completed by a technical visit and / or seminars given by experts from industry
Bibliography
Transparents du cours, recueil de documentation, liens sur Moodle
Faculty or entity


Programmes / formations proposant cette unité d'enseignement (UE)

Title of the programme
Sigle
Credits
Prerequisites
Aims
Master [120] in Electrical Engineering

Master [120] in Electro-mechanical Engineering