Lecturer: Paolo Marannino  

Course name: Elementi di sistemi elettrici
Course code: 064123
Degree course: Ingegneria per l'Ambiente e il Territorio
Disciplinary field of science: ING-IND/33
L'insegnamento è caratterizzante per: Ingegneria per l'Ambiente e il Territorio
University credits: CFU 6
Course website: n.d.

Specific course objectives

At the end of the course the student will acquire the basic knowledges of the production transmission and distribution of the electric energy. Must also be present to the student as a careful planning of the system components and the coordinated exercise of the entire system can ensure the reliability required for an orderly development of the modern industrial civilization.

Course programme

OVERVIEW OF ELECTRICAL ENGINEERING

• Operational definition of voltage, current, power.
• Electrical Resistive Networks. Bipoles, Kirchhoff's laws.
• Sinusoidal voltages and currents, vectors and phasors in the complex plane, impedance and admittance, apparent power.
• Three-phase symmetric and balanced systems, single-phase equivalent network.
• Fundamental of electrical machines.

STRUCTURE OF ELECTRICAL SYSTEMS

• Electricity demand and providing coverage requirements. Development of electrical systems in Italy and worldwide.
• The transition from vertically integrated monopoly structures to the competition in the electricity market.
• Generation, transmission and distribution systems: DC systems, AC mono- and three-phase systems. Structure of electric systems: generation plants, transformers, transmission lines, loads.
• Generation: primary sources for electricity generation, demand for electricity, energy balances, load diagrams and their cover by different generation technologies. Run-of-the-river, reservoir and pumped-storage hydroelectric power plants. Steam power plants, gas and combined cycle. Wind farms, solar plants and other plants that exploit other renewable sources, green certificates.
• Number of hours of use and power losses. Production costs. Interaction between generation plants and environment.
• Transmission: overhead power lines and cables, design features, equivalent two-port networks of lines and transformers.
• Distribution: medium and low voltage networks.

NETWORK CALCULATIONS

• Power flow calculations: power flow equations of lines and transformers. Nodal power balance equations.
• Simplified method in direct current (DC load flow).
• Dispatching: dispatching at equal incremental costs.
• The competition in the electricity market: supply and demand curves. The role of market participants.
• The security in electric power systems: the role of the transmission network.
• Short circuit calculations.

Voltage and Frequency Control

Course entry requirements

To have an adeguate knowledge of the mathematics and phisics.

Course structure and teaching

Lectures (hours/year in lecture theatre): 32
Practical class (hours/year in lecture theatre): 26
Practicals / Workshops (hours/year in lecture theatre): 0
Project work (hours/year in lecture theatre): 0

Suggested reading materials

[1] F. Iliceto. Impianti elettrici, Vol. 1. P.

[2] N. Faletti, P. Chizzolini. Trasmissione e distribuzione dell'energia elettrica. Vol. 1 e 2. P.

[3] Olle Elgerd. Electric Energy Systems Theory - An Introduction. McGraw-Hill.

[4] Lecture notes, articles from national and international journals, information from the websites of the national transmission system operator (Terna) .

Testing and exams

The assessment of students knowledge will be made as well as with ongoing testing and at completion of the course with the oral examination.