oa Interim : Interdisciplinary Journal - Clearing of transient faults in MV networks

Volume 14, Issue 1
  • ISSN : 1684-498X



This paper contains research performed on the effectiveness of methods that aims to clear transient faults on MV networks without causing momentary supply loss to customers due to ARC operations, which is achieved by "instantaneous" interruption of fault currents. This is done by momentarily disconnecting the NECR's neutral earth connection. Currently the research also includes the implementation of single pole breakers which are able to trip independently from each other within 25ms. Implementing these methods of clearing transient faults will result in less stress being placed on breakers, joints, conductors and transformers within the MV network. It will also yield a better QoS performance with regards to dips and momentary interruptions. Lastly, the scheme will result in up to 50 times less burn wounds on people or animals in the unfortunate case of making contact with the MV network.

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