- Docente: Marco Landini
- Credits: 6
- SSD: ING-IND/31
- Language: Italian
- Moduli: Marco Landini (Modulo 1) Marco Landini (Modulo 2)
- Teaching Mode: Traditional lectures (Modulo 1) Traditional lectures (Modulo 2)
- Campus: Bologna
- Corso: First cycle degree programme (L) in Electrical Energy Engineering (cod. 5822)
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from Feb 20, 2024 to Apr 18, 2024
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from Apr 23, 2024 to Jun 05, 2024
Learning outcomes
The course aims to provide knowledge of the methods of calculation and measurement of low-frequency electric and magnetic fields produced by electrical devices and infrastructures in the surrounding environment. Several mathematical models are presented that are descriptive of common and less common cases. Furthermore, various problems will be tackled based on concrete cases. Knowledge of the reference legislation.
Course contents
Introduction to the calculation of electric and magnetic fields
Basics of electrical engineering: electrical and magnetic quantities and their methods of calculation. Electrostatics, and magnetostatics. Almost stationary electrodynamics. Examples of calculating the electric and magnetic fields with simple configurations. Choice of the appropriate study hypotheses for the cases of interest.
Calculation of the electric and magnetic fields of power lines
Straight and catenary two-wire DC and AC overhead lines. Three-phase electric lines and double three-phase lines. Double three-phase lines optimization concept. Mechanical calculation of overhead lines to deduce characteristic parameters of the lines. Materials used and laying of the overhead lines. Electric-lines in underground cable and overhead cable. Straight and helical lines configuration. Materials used and laying of the cable lines.
Calculation of the electric and magnetic fields of electrical substation
Study of the various components of the electrical substation. Discretization of the electromagnetic model.
Computer aided calculation
Training in the use of computational codes. Introduction to Matlab. Implementation of some computational codes. Concrete examples of EM impact assessment.
Instrumentations, monitoring and measurement techniques
Electrical metrology requests. Definition and characteristics of an instrument. Introduction to data acquisition systems: A/D conversion of a signal and techniques for numerical processing. Operating principle of instruments for measuring electric and magnetic fields. The problem of the correct estimation of the maximum emission values of magnetic fields; the weighted peak method: implementation of the method in analog and digital instruments. Example of design of an instrument for low frequency magnetic field measurements. Analysis of the characteristics of some commercial instruments.
Electromagnetic shielding
Shielding of electric and magnetic fields. Principles, methods and techniques for mitigating electric and magnetic fields at low frequencies
Laws and Standards
Regional, national and international laws and Standard regarding the limits of exposure to EM fields of workers and the population. Legislation and standard for carrying out measurements of low frequency EM fields.
Readings/Bibliography
Notes provided by the teacher
Teaching methods
Lectures and numerical simulations on the PC
Assessment methods
Oral examinations
Teaching tools
Numerical simulation with the PC
Office hours
See the website of Marco Landini