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Projects / Programmes source: ARIS

Research into gas arrester follow current selfextinguishing characteristcs

Research activity

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

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
Evaluation (rules)
source: COBISS
Researchers (16)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  03930  PhD Martin Bizjak  Electric devices  Head  2004 - 2006  93 
2.  06073  PhD Milan Bizjak  Materials science and technology  Researcher  2004 - 2006  465 
3.  17189  Nika Breskvar    Technical associate  2004 - 2006 
4.  16120  MSc Andrej Hanžič  Energy engineering  Researcher  2004 - 2005  124 
5.  17752  MSc Darko Koritnik  Energy engineering  Researcher  2004 - 2006  82 
6.  11667  MSc Vladimir Murko  Engineering sciences and technologies  Researcher  2004 - 2006  52 
7.  03066  PhD Vincenc Nemanič  Electronic components and technologies  Researcher  2004 - 2006  245 
8.  09169  PhD Jože Pihler  Electric devices  Researcher  2004 - 2006  945 
9.  06963  MSc Andrej Pirih  Telecommunications  Researcher  2004 - 2006  45 
10.  01737  MSc Andrej Pregelj  Electronic components and technologies  Researcher  2004 - 2006  248 
11.  00735  PhD Anton Smolej  Materials science and technology  Researcher  2004 - 2006  276 
12.  20965  Marjan Stegne  Electric devices  Researcher  2006  77 
13.  23224  MSc Aleš Štagoj  Energy engineering  Researcher  2004 - 2006  37 
14.  05507  PhD Jože Voršič  Energy engineering  Researcher  2004 - 2006  1,017 
15.  20335  PhD Bojan Zajec  Civil engineering  Researcher  2004 - 2006  184 
16.  03366  Marko Žumer  Electronic components and technologies  Researcher  2004 - 2006  110 
Organisations (4)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  91,882 
2.  0796  University of Maribor, Faculty of Electrical Engineering and Computer Science  Maribor  5089638003  27,664 
3.  1555  University of Ljubljana, Faculty of Natural Sciences and Engeneering  Ljubljana  1627074  19,936 
4.  1864  Power Measurements Centre - Technological centre  Kamnica  1636995  85 
Abstract
Gas discharge overvoltage arresters are applied in overvoltage protection of class I, where besides voltage surges also significantly high current pulses are expected. Gas discharge arresters are found in protection of TN systems as well as in equipotential bonding between N-PE conductors in TT systems. A spark-gap electrode system is enclosed in special gas mixture in the presence of discharge activation agent. At breakdown voltage, which is defined by electrode gap and gas mixture, the electrical conductivity is changed from normaly non-conductive to the conductive state. The conductive state is established by spark discharge followed by intermediate glow discharge and final arc-discharge phase. The conductive state lasts untill discharge current falls below the order of magnitude 1A or voltage in spark gap below 10 V. So in the L-N circuits, where the supply voltage exists in the normal circuit conditions the undesirable short circuit is maintained further by overvoltage arrester even after voltage transient has been already cleared. Due to the existence of power supply voltage in L-N system a considerably high follow-on current can be maintained, which should be broken by other means of interruption. A prospective current in the range up to few kA is expected, which is far above self-interrupting ability of simple spark-gap gas discharge arrester having breaking capacitiy limited to up to approximately 10 A. In order to avoid the neccessitiy of back-up circuit breaker an increase of self-interrupting capacity of gas discharge surge arrester is required up to the value of 1 kA. This task will be achieved by methods of current limiting as applied for low-voltage circuit breakers. For the research purpose the construction of various experimental models of gas discharge protective device with incorporated components for arc quenching are planned, which will be manufactured by methods of vacuum degassing and incapsulation by high-temprature brazing in determined gas. They will be subjected to tests of breaking capacity of follow-on current initiated by high voltage pulse.
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