Fault Detection and Clearance in DC Distributed Power Systems

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding


This paper treats fault detection in DC distributed power systems, with emphasis on ground faults. The difficulty of detecting ground faults arises from the fact that the AC sources and loads are ungrounded or have heavy impedance to ground, on the converter side, to effectively block zero sequence currents otherwise flowing between the AC systems. A grounding scheme for the DC distribution system together with algorithms for detection of ground faults is presented. The proposed method detects ground faults on both the AC and DC sides and is extended to cover also short circuit faults with a minor work effort, which is also discussed.


  • Per Karlsson
  • Jörgen Svensson
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Other Electrical Engineering, Electronic Engineering, Information Engineering


  • DC power distribution, grounding, power system protection, fault currents
Original languageEnglish
Title of host publicationNorpie 2002 Conference Proceedings
PublisherEPE Association
Number of pages6
Publication statusPublished - 2002
Publication categoryResearch
EventNORPIE 2002 Conference - Stockholm, Sweden
Duration: 0001 Jan 2 → …


ConferenceNORPIE 2002 Conference
Period0001/01/02 → …