Surge and extended overvoltage testing of HVDC cable systems

In this contribution we give a short status update of the Cigré JWG B4/B1/C4.73. This joint working group deals with investigating the surge and extended overvoltage testing of HVDC cable systems. We present a historic overview over the standardization situation for HVDC cable systems. This is followed by summarizing some findings and trends from data of the HVDC project collection, which are used for prioritization of the work tasks. Moreover, we give some first simulation results on the topic. Since the JWG B4/B1/C4.73 is still in operation mode no firm conclusions on standardization should yet be drawn by the investigations presented here. Instead the relating brochure and/or Electra publication should be awaited.