Course program
Introduction, objectives and organization of the course
Load analysis
Power analysis
Sizing of power sources
Emergency power supply
UPS and Generator Sets
Short circuit impedance representation in P.U.
Calculation of short circuit current with P.U. method
Line cross section calculation for voltage drop
Thermal cross section calculation
Cross section calculation for short circuit withstand
Fault protection system requirements
Magnetic relay, thermal relay, magneto-thermic combination
Voltage relay, directional, line differential - CT and VT
Selectivity
Electric arc interruption in alternating and direct current
Fuses and extreme breaking capacity breakers
Special features of protection systems in the presence of UPS and Generator Sets
MV line protection with radial connection between MV/LV substations
MV line ring protection
Logic selectivity protection of MV switchgear busbar
Functional schemes
MV ring logic selectivity protection
Selective protection of parallel transformers
Electrocution
Protection from direct contact
Grounding Systems
Protection from indirect contacts
Lightning
Lightning protection
Examples of faults and protection trip
Summary exercise, load analysis, circuit sizing and protection coordination
Airside and groundside airport systems
Special systems in intermodal area
Possible architectures of airport systems distribution networks
Navigational aids systems
Installations for radio-electric navigational aid equipment supply
Aeronautical ground lighting
Normalized geometries of ground lighting aids
Ground lighting aids management - SMGCS and ASMGCS
Ground lighting aids for TW and Apron
Series circuits for lighting aids
Calculation of series circuits
Examples of airport facilities
Lighting aids with LED sources
Luggage system
Introduction of electrical system for commercial aircraft
Electricity generation on board
Special features frequency at 400Hz - Synchronous generator - CSD and IDG
Example: IDG 767 - Brushless structure
Power source management: main generator, APU, TRU and battery
On-board electrical systems example diagrams
Electric system components: switches, relays, contactors, cables and junctions (laboratory)
Components for airport lighting aid systems (laboratory)
Prerequisites
Know the basic laws of electrical engineering;
Know the methods of analysis and representation of direct current circuits;
Know the methods of analysis in alternating current of both single-phase and three-phase circuits;
Know the basic characteristics of electrical machines, motors and generators, both in direct and alternating current.
Books
Power-point documents , articles , data sheets , airport regulations , provided by the teacher in the first lessons as PDF documents on a CD .
Frequency
face-to-face classroom lessons according to the faculty calendar
Exam mode
The valuation is based on an oral exam typically divided into three questions.
The student's answers must show the following learning outcomes.
Knowledge of the topic with correct framework with respect to the aspects most linked by system constraints.
Demonstrate full understanding of the physical laws that are applicable in the particular case.
Lesson mode
The lessons are based on an iterative process that develops in the following phases.
We present the topic that will be treated by highlighting the system's links with the other topics already analysed or that will follow.
The physical bases are highlighted by highlighting the difference in schematization three a purely electrotechnical analysis and power system sizing.
The typical formulations of literature are presented, and when possible the presented formulations are used by carrying out simple example calculations to show their operations.
At this point, students are invited to ask questions, possibly stimulating attention on aspects known for their greater difficulty of full immediate understanding.
With the next topic, the system problems are presented, returning to the concept that the individual problems analysed will then have to be managed together by optimizing the choices and sizing.
With this process the individual topics are analysed and at the same time a critical evaluation approach is provided that helps the full understanding of the main problems encountered in the design of an electrical system.
The aeronautical area is therefore used not only as an objective of knowledge of its particularities but also as an example of the highest quality and performance requirement for an electrical system.
In this teaching process, the calculation process develops in two ways.
A tool to help understand the particular problems with individual applications of the formulas just analysed.
Summary exercises where not only all possible formulations are applied but also above all the systemic aspect intrinsic to the sizing process is highlighted.