Location strategies and evaluation of detection algorithms forearth faults in compensated MV distribution systems

摘要

The compensation of MV distribution systems improves on the onenhand the supply quality and imposes on the other hand higher constraintsnon earth fault detection and location strategies. Three new algorithmsnfor the detection of permanent, resistive single phase earth faults arendiscussed. After a first implementation in the network, model testingnshowed the influence of important parameters on the algorithms accuracy,nalso for transient earth faults. Finally a novel strategy for faultnlocation in compensated systems with a complex radial structure isnoutlined