Energija, Vol. 58 No. 5, 2009.
Pregledni rad
CHANGES OF THE CONCEPT OF NEUTRAL POINT EARTHING OF MID-VOLTAGE GRIDS
M. Puharić
Sažetak
Neutral point earthing of mid-voltage grids is implemented variously
around the world, depending on the practice of individual countries with
the emphasis on the technical regulations in force. Croatia is in the process
of transition from star-point earthing through resistors to resonant
earthing. Questions on the choice of arc suppression coil technology and the
consequences for the operation of relay protection in transformer stations
arise in relation to that. It is necessary to view all technical-economic
aspects in order to reach an appropriate solution, while at the same time
acknowledging the reliable operations of star-point earthing devices, and
ensuring a satisfactory quality of electric energy supply.
Ključne riječi
arc suppression coil; mid-voltage grid; neutral point earthing
Hrčak ID:
198602
URI
Datum izdavanja:
15.12.2009.
Posjeta: 4.151 *