Università degli Studi di Napoli "Parthenope"

Teaching schedule

2016/2017
Teaching:
Belonging course:
Course of Master's Degree Programme on MANAGEMENT ENGINEERING
Location:
Napoli
Disciplinary sector:
ELECTRIC AND ELECTRONIC MEASUREMENTS (ING-INF/07)
Credits:
6
Year of study:
2
Teachers:
Cycle:
First Semester
Hours of front activity:
48

ITALIAN

Course description

The course aims to provide the basic concepts related to metrology and power quality problems as well as tools needed to analyze the problems of electrical safety.

DUBLIN DESCRIPTORS

1.Knowledge and understanding
The student must know:
-the general criteria of measurement and evaluation of power quality disturbances
-the laws on the electrical safety.
-the general criteria for designing the protections against overcurrent and against direct and indirect contacts.

2.Applying knowledge and understanding
The student must demonstrate to be able
-to integrate knowledge in the field of power quality disturbances and electrical power systems.
-to apply the criteria for the selection and use of protective installation against electrical risk.

3.Making judgments
The student must demonstrate that he has the basic knowledge for dealing and deepening in an autonomous way the issues related to the power quality and electrical safety problems.

4.Communication skills
The student must demonstrate the ability to easily explain to people
- the methodologies for the evaluation and reduction of the power quality disturbances
- the solutions adopted in the electrical distribution systems for the achievement of prefixed safety levels.

5.Learning skills
The student must be able to update information about power quality and electrical safety problems through texts, standards and publications in order to acquire the ability to undertake further courses, specialized seminars and master

Prerequisites

The student must have acquired the following knowledge provided by the courses of "Electrical circuits and Network Analysis" and "Electrical power systems":
The circuit model: ideal circuit elements, voltage and current. Kirchhoff’s laws. Linear resistive circuits: series and parallel equivalence, superposition principle, Thevénin-Norton’s theorem. Linear circuits in DC and AC steady state. Complex power, active power, reactive power, and conservation properties. Dynamical circuits, general methods of solution. Symmetric three-phase circuits: balanced, unbalanced.
Normal and abnormal operating conditions of an electrical power system; overcurrent and over voltage protection systems

Syllabus

Electrical measurementsDefinitions and basic concepts of measurements. (1 ECTS – 8 hours)Classification of signals and analog to digital converters. (0,5 ECTS – 4 hours) Main power quality disturbances (0,5 ECTS – 4 hours)Harmonic distortions: definitions, evaluation methods, indices and objectives (1,5 ECTS – 12 hours). Main solutions to minimize disturbance levels. (0,5 ECTS – 4 hours)Interruptions: definitions, evaluation methods, indices and objectives (1 ECTS – 8 hours). Voltage sags: definitions, evaluation methods, indices and objectives (0,5 ECTS – 4 hours). Main solutions to minimize interruptions and voltage sags. (0,5 ECTS – 4 hours)Electrical safetyIntroduction on Electrical safety (0.5 CFU - 4 hours)Definition of security and risk. Security of a system. Reliability and security. The acceptable level of security. The legislative bases of security (0.5 CFU - 4 hours)CEI Standards. The DM 37/08. Overload protection devices (0.75 CFU - 6 hours)Current rating of the cableOverload capability curve of a cableTime-current characteristic curves of protection devicesCircuit breakersFusesRequirements for the overload protection deviceShort-circuit protection devices (0.75 CFU - 6 hours)Recalls on the short-circuit currentThermal stress on a cable in short circuit conditionsShort circuit current calculationRequirements for the short-circuit protection deviceFuses and Circuit breakersEffect of current on the human body (1.25 CFU - 10 hours)Introduction to electrical shock Limits of the electric currentElectrical resistance of the human bodyThe earth resistanceResistance to earth of a personFull voltage and touch voltage.Protection against direct contact (0.25 CFU - 2 hours)Total and partial protection measuresTT system - Protection against indirect contact (1.0 CFU - 8 hours)Protection by means of maximum current devicesLimits of maximum current protectionProtection by means of a differential circuit breakerSelective Coordination Earthing system (0.25 CFU - 2 hours)Components and technical specificationsTN system - Protection against indirect contact (0.5 CFU – 4 hours)Equivalent circuitDistribution circuits and terminalsDifferential circuit breakersSizing of the Earthing Resistance of HV/MV Transformer Testing and inspection (0.5 CFU – 4 hours)DPR 462Measuring Earth Resistance Test of differential circuit breaker

Electrical measurements and safety course includes are the following: description of the electronic measurement systems and of the fundamentals on measurement uncertainty.Power quality: fundamental definitions, methods for disturbance levels evaluation, indices, objectives and technical solutions for disturbance limitation.Electrical safety: legislation and regulations on electrical safety.Design of protection systems against overcurrentsProtection against direct contact and indirect contactElectrical safety testingExtended programElectrical measurementsDefinitions and basic concepts of measurements. (1 ECTS – 8 hours)Classification of signals and analog to digital converters. (0,5 ECTS – 4 hours) Main power quality disturbances (0,5 ECTS – 4 hours)Harmonic distortions: definitions, evaluation methods, indices and objectives (1,5 ECTS – 12 hours). Main solutions to minimize disturbance levels. (0,5 ECTS – 4 hours)Interruptions: definitions, evaluation methods, indices and objectives (1 ECTS – 8 hours). Voltage sags: definitions, evaluation methods, indices and objectives (0,5 ECTS – 4 hours). Main solutions to minimize interruptions and voltage sags. (0,5 ECTS – 4 hours)Electrical safetyIntroduction on Electrical safety (0.5 CFU - 4 hours)Definition of security and risk. Security of a system. Reliability and security. The acceptable level of security. The legislative bases of security (0.5 CFU - 4 hours)CEI Standards. The DM 37/08. Overload protection devices (0.75 CFU - 6 hours)Current rating of the cableOverload capability curve of a cableTime-current characteristic curves of protection devicesCircuit breakersFusesRequirements for the overload protection deviceShort-circuit protection devices (0.75 CFU - 6 hours)Recalls on the short-circuit currentThermal stress on a cable in short circuit conditionsShort circuit current calculationRequirements for the short-circuit protection deviceFuses and Circuit breakersEffect of current on the human body (1.25 CFU - 10 hours)Introduction to electrical shock Limits of the electric currentElectrical resistance of the human bodyThe earth resistanceResistance to earth of a personFull voltage and touch voltage.Protection against direct contact (0.25 CFU - 2 hours)Total and partial protection measuresTT system - Protection against indirect contact (1.0 CFU - 8 hours)Protection by means of maximum current devicesLimits of maximum current protectionProtection by means of a differential circuit breakerSelective Coordination Earthing system (0.25 CFU - 2 hours)Components and technical specificationsTN system - Protection against indirect contact (0.5 CFU – 4 hours)Equivalent circuitDistribution circuits and terminalsDifferential circuit breakersSizing of the Earthing Resistance of HV/MV Transformer Testing and inspection (0.5 CFU – 4 hours)DPR 462Measuring Earth Resistance Test of differential circuit breaker

Teaching Methods

Lectures, classroom exercises

Textbooks

Caramia, P., Carpinelli, G. and Verde, P. Power Quality Indices in Liberalized Markets, John Wiley & Sons, Ltd, Chichester, UK, 2009
V. Carrescia, Fondamenti di sicurezza elettrica, TNE, Torino.
Peter E. Sutherland: Principles of Electrical Safety, John Wiley & Sons
Notes provided by the teacher

Learning assessment

The exam consists in an oral test in which the level of knowledge of the topics addressed during the course will be assessed.The oral exam typically involves two questions: one on definitions, causes and effects of power quality disturbances; the other one on power quality indices and compensation methods. The exam has a total duration of about thirty minutes. The final grade is the average of the grades obtained by the student for the two questions.