AIMS

The laboratory is primarily aiming to provide laboratory training to students in order for them  to deeply understand and consolidate the theoretical part of ongoing courses and to familiarize them with the requirements of practical applications. Furthermore, the laboratory serves to conduct undergraduate and postgraduate research work, research projects or other independent research work.

ACTIVITIES

EDUCATION

The following laboratory courses of the undergraduate program in Energy Technology Engineering are taught  :

• Electrical Network Analysis (2nd Semester)
• Measurement Systems (4th Semester)
• Electrical Installations (7th Semester)

Course description:

• Electrical Network Analysis
  The student becomes familiar with the measuring devices and the use of instruments used for measuring and monitoring electrical quantities in AC or DC Networks. These quantities include voltage, current, frequency, impedance, real, reactive and apparent power, power factor et.c., emphasizing in the energy aspects of electrical circuits and networks. The course objective is to help the students understand the theoretical part of the course of electrical networks analysis and acquire the necessary background for all forthcoming classes in electrical energy engineering topics.
• Measuring Systems
  This course is referring to the study of  principles, methods and circuits used for measurements of basic electrical and other physical quantities. Reference is made to the analog and digital measuring systems as well as to various transducers and sensors which are commonly used in energy systems or installations. Also the basic  factors affecting the accuracy of a measurements are introduced and typical terms such as precision, random or systematic error and resolution are examined.
• Electrical Installations
  This  laboratory course familiarizes students with basic principles in design, operation and safety of Electrical Installations in Energy Systems. The students acquire the necessary background for the design and the selection of equipment in  typical Electrical Installations, emphasizing in  protection and safety. Standard testing methods are introduced and practiced,  in accordance with the national and international standards (ELOT HD384, IEC etc.). In addition, typical control systems in Electrical Installations are introduced, engaging programmable logic controllers (PLCs).

DISSERTATIONS - THESES

Undergraduate students are working in the laboratory in order to prepare their dissertations. Various dissertations have already been carried out, within the scientific areas covered  by the laboratory, including energy electrical systems, electrical installations, electrical circuits and networks and measuring systems.

In addition, a number of MSc theses has been carried out in the laboratory, under the postgraduate program  “MSc in Energy” which is held in cooperation of TEI Athens with the Heriot-Watt University of Edinbourgh, Scotland.

At present, the laboratory also supports PhD students.

RESEARCH

The laboratory is supporting the research activities of the laboratory staff  and participates  in funded research projects, such as:

• Research project in the framework EPEAEK ARCHIMEDES II, entitled "Developement of modern measurement and simulation techniques in electrical grounding systems, implementing new technologies"

This project has been organized in cooperation of the Department of Energy Technology Engineering  of TEI Authens with the Laboratory of High Voltage Engineering of the School of Electrical and Computer Engineering of the National Technical University of Athens and  has been co-funded by the EU and the Greek Goverment. The behavior of electrical grounding systems over time has been investigated and a new methodology has been developed for the calculation of the soil multilayer structure parameters, based on a genetic algorithm. The change in resistivity of the ground has been also studied and the dependency on the ambient temperature and the frequency of rainfall intensity (which is indicative of the soil moisture) has been shown. The analysis of experimental results for ground resistivity and ground resistance, based on a large number of measurements, has shown that the soil in which measurements have been performed may be optimally simulated as a two-layer ground. The calculation of critical soil parameters (resistivities p1, p2 and depth of the surface layer h1), has been carried out with high accuracy by the implementation of prototype software based on a genetic algorithm, developed within the aims of the project.

• Research project in the framework EPEAEK ARCHIMEDES, entitled "Implementation of Artificial Intelligence Techniques in Power System

This project has been organized in cooperation of the Department of Energy Technology Engineering  of TEI Authens with the Laboratory of High Voltage Engineering of the School of Electrical and Computer Engineering of the National Technical University of Athens and  has been co-funded by the EU and the Greek Goverment. The aim of the research project was the development of modern methods and tools for systematic monitoring, fault diagnosis and optimization of Power Systems Equipment with emphasis on Electrical Machines and Power Transformers. Within the scope of the project, two prototype expert system applications have been developed for fault diagnosis and maintenance of electrical machinery and power transformers.

• EPEAEK II Project entitled "Reformation of Undergraduate Studies Programs" regarding the implementation of a modern energy auditing system comprising an on-line communications platform and a data acquisition system connected with powermeters, for monitoring, recording and analysis of electrical energy consumption data and power quality data  in real industrial or commercial installations for research or educational purposes.

LABORATORY EQUIPMENT

The available equipment comprises :

• Analog and digital ampmeters or votmeters
• Hand-held or bench multimeters
• Analog and digital Wattmeters (single-phase or three-phase)
• Digital Powermeters
• Communication platform for powermeters
• Electrical Motors
• Generators
• AC-DC power sypplies
• Oscilloscopes, waveform generators
• Power Inductors, Resistors and Capacitors
• Transformers (single phase-three phase)
• Adjustable resistors, phase shifters
• Wheatstone Bridges
• Temperature, humidity and air speed sensors
• Adjustable 40kV dc high voltage generator
• Electrical Insulation Testers
• Thermographic Camera
• Electrical Installations Simulation and Measuring Board, for the conduction of typical tests under the ELOT HD384 National Standard
• Programmable Logic Controllers (PLC)
• Ground resistivity and ground resistance measuring system.

STAFF

ACADEMIC STAFF

Dr. Antonios Moronis, Professor, Lab Director
Dr. John Rampias, Professor

Technical Staff

Lambros Skoufoulas

Part-time Staff

1.      George Tsekouras, Electrical Engineer, PhD

2.      Demetrios Tsalemis, Electrical Engineer, PhD

3.      Stylianos Papadopoulos, Electrical Engineer, MSc

4.      Stylianos Kampanaros, Electrical Engineer

CONTACT

ADDRESS:

LABORATORY OF ELECTROTECHNOLOGY AND MEASURING SYSTEMS
Department of Energy Technology Engineering
Faculty of Technological Applications
Τechnological Educational Institute (TEI) of Athens
Ag. Spyridonos, 12210 Egaleo