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Review article

CHANGES OF THE CONCEPT OF NEUTRAL POINT EARTHING OF MID-VOLTAGE GRIDS

M. Puharić


Full text: croatian pdf 1.142 Kb

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Full text: english pdf 1.142 Kb

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Abstract

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.

Keywords

arc suppression coil; mid-voltage grid; neutral point earthing

Hrčak ID:

198602

URI

https://hrcak.srce.hr/198602

Publication date:

15.12.2009.

Article data in other languages: croatian

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