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Projects / Programmes source: ARIS

Research of the integrated surge protective system

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Research activity

Code Science Field Subfield
2.09.02  Engineering sciences and technologies  Electronic components and technologies  Electronic components 

Code Science Field
T170  Technological sciences  Electronics 
T190  Technological sciences  Electrical engineering 
P240  Natural sciences and mathematics  Gases, fluid dynamics, plasmas 
T140  Technological sciences  Energy research 
Keywords
gas discharge overvoltage arrester, spark gap, breakdown voltage, arc quenching, follow-on current, ZnO varistors, treshold voltage, microstructure
Evaluation (rules)
source: COBISS
Evaluation of bibliographic research performance indicators according to ARIS methodology
Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases
source: WoS source: Scopus source: COBISS
Researchers (10)
no. Code Name and surname Research area Role Period No. of publications
1.  07034  PhD Nikola Jelić  Mechanical design  Head  2007 - 2009  129 
2.  19048  PhD Marjan Korošec  Manufacturing technologies and systems  Researcher  2007  28 
3.  01322  VLADIMIR MURKO    Researcher  2007  91 
4.  03066  PhD Vincenc Nemanič  Electronic components and technologies  Researcher  2007 - 2009  245 
5.  06963  MSc Andrej Pirih  Telecommunications  Researcher  2007 - 2009  45 
6.  01737  MSc Andrej Pregelj  Electronic components and technologies  Researcher  2007 - 2009  248 
7.  23224  MSc Aleš Štagoj  Energy engineering  Researcher  2007 - 2009  37 
8.  05652  MSc Alojzij Tavčar  Materials science and technology  Researcher  2007 - 2009  70 
9.  20335  PhD Bojan Zajec  Civil engineering  Researcher  2007 - 2009  182 
10.  03366  Marko Žumer  Electronic components and technologies  Researcher  2007 - 2009  110 
Organisations (2)
no. Code Research organisation City Registration number No. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  90,742 
2.  0782  University of Ljubljana, Faculty of Mechanical Engineering  Ljubljana  1627031  29,252 
Abstract
The needs for reliable protection of the electric devices in networks against the heavy atmospheric lightening discharges (i.e., 25-100 kA) are rapidly increasing during the last decades. The subject of the present proposal is the research and development of an over-voltage protection system which will integrate the capabilities of two basic elements, i.e., the gas arrester and varistor into a compact protection unit. Namely, the varistor during the high external voltage overload is capable to change its resistivity from very high to very low level and, after the external pulse disappears to quickly restore the high resistivity back. However, it is an inherent, still unsolved problem in varistor technology, that their current-voltage characteristics can't be designed for their universal use so as that they could serve autonomously for the over-voltage protection. The main problem arises due to limitations regarding the range of voltages within which they are fully applicable. This problem can be partially solved by the gas arrester which can change its resistivity from very high to very low values in a wide spectrum of external voltages. Unfortunately, this is not possible to assure that gas arrester will work also vice-versa within satisfactorily short response (relaxation) time. The only solution at the moment is to combine the properties of both varistor and gas arrester so as to obtain a resultant current voltage characteristic with desired static and dynamic impedance. This project proposal describes a well defined approach how to achieve this goal. In addition, we will investigate the problems related to thermal and mechanical loads and structural changes regarding the material and gas structure over repetitive current-voltage overloads. The end purpose is to propose an optimum solution for reliable and economically acceptable in praxis components and integrated protector design and production.
Significance for science
The groups involved in the project from Iskra zaščite d.o.o., Varsi, d.o.o., LECAD Laboratory of the University of Ljubljana and Jožef Stefan Institute, employed a wide knowledge and skills on the fields of electrotehnics, electronics, measurement methods and techniques, solid state physics, material sciences, gas physics, vacuum techniques, plasma physics. The results obtained up to now, as well as those which are foreseen before the end of the project, are highly multi and inter disciplinary ones of high interest in various mentioned fields of scientific and technology development for possible application in final production.
Significance for the country
Project is a continuation of the research and development projects (Research project: Research into gas arrester follow current self extinguishing characteristics, Projekt MŠZŠ, contract No.: 3311-04-8226385, ESRR Center of Excellence “Electronic materials of the next generation and of the other coming technologies” 4th. and 5th. frame programme EU, INCO COPERNICUS projekt “High power ZnO based varistors - HIPOVAR” 1998-1999, CRAFT 5 programme -VARESTER- A novel miniaturized high voltage surge arrester (CRAF-1999-71695), 2003-2005). The project results represent a scientific and technology development for possible application in final production. Additional gain is a recruitment of young highly prospective researchers i.e., their employments on various multy- and inter- disciplinary fields which will open new possibilities for further international and domestic projects.
Most important scientific results Annual report 2008, final report, complete report on dLib.si
Most important socioeconomically and culturally relevant results Annual report 2008, final report, complete report on dLib.si
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