Neutral Earthing Method Selection and Earth Fault Handling for Substations in the Distribution Networks

The method of neutral earthing selected for a galvanic separated network is decisive for the supply reliability and safety of operation. It has a large impact on details in substation design. The report gives classification of methods and required equipment for fault protection, localisation as well as detailed equipment design and selection.  Furthermore, the worldwide practise is reflected in the results of a worldwide survey.