DocumentCode :
3636517
Title :
Selective detection of simple grounding faults in medium voltage power networks with resonant earthed neutral system
Author :
Dumitru Toader;Petru Ruşeţ;Ştefan Hărăguş;Constantin Blaj;Ioan Haţegan;Nicolae Pinte;Iulia Căta
Author_Institution :
University “
fYear :
2010
Firstpage :
1285
Lastpage :
1293
Abstract :
In this paper the influence of the medium voltage lines insulation ageing on some network parameters, namely the capacitive zero-sequence impedance of the network, the zero-sequence impedance of the grounding and arc-suppression coils taken together, as well as the equivalent zero-sequence impedance as seen from the grounding fault location, is analyzed. As a result of the analysis useful criteria to selectively detect faulty lines during a single grounding fault are formulated. These criteria are implemented by a digital protection block BYCD - 2. Measurements done in a real medium voltage network, during purposely provoked faults, validate the concepts the block is based on.
Keywords :
"Fault detection","Grounding","Medium voltage","Resonance","Impedance","Insulation","Aging","Coils","Fault location","Protection"
Publisher :
ieee
Conference_Titel :
Optimization of Electrical and Electronic Equipment (OPTIM), 2010 12th International Conference on
ISSN :
1842-0133
Print_ISBN :
978-1-4244-7019-8
Type :
conf
DOI :
10.1109/OPTIM.2010.5510512
Filename :
5510512
Link To Document :
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