Swedish distribution networks-aspects on neutral treatment, earthfault clearance and related matters

The Swedish State Power Board has been studying different earthfault protection schemes in order to improve the existing concepts. A number of its current research projects are also related to the question of neutral treatment in distribution networks. The authors discusses some general views on the matter and gives a short presentation of one of the current projects. The project in question deals with the aspect of high impedance fault detection in plants with covered overhead lines