Point-to-point Two-level Converter System Faults Analysis

Bin Chang, Oliver Cwikowski, M Barnes, Roger Shuttleworth

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


    Voltage Source Converter (VSC) HVDC transmission is receiving significant attention as the UK is trying to meet its renewable energy targets. However, VSC-HVDC is more vulnerable to DC faults compared to more traditional CSC- HVDC transmission techniques, due to the low DC side impedances and sensitive power electronics within the converters. This paper investigates the two-level converter system response under different fault scenarios, i.e., pole-to-pole and pole-to-ground faults. A point-to-point two-level VSC-HVDC system was developed in PSCAD/EMTDC to evaluate the system fault response and to verify the theoretical analysis. The study details the system response of the DC side and AC side to pole-to-pole and pole-to-ground faults. The paper details parameters which are considered to be fundamental in the design of a DC protection system. This work is sponsored by National Grid.
    Original languageEnglish
    Title of host publicationhost publication
    PublisherInstitution of Engineering and Technology
    Publication statusPublished - Apr 2014
    EventConference on Power Electronics, Machines and Drives, PEMD 2014 - Midland Hotel, Manchester, UK
    Duration: 8 Apr 201410 Apr 2014


    ConferenceConference on Power Electronics, Machines and Drives, PEMD 2014
    CityMidland Hotel, Manchester, UK


    • Faults response; HVDC protection; point-to-point system; two-level converter; VSC-HVDC


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