Decreasing the commutation failure frequency in HVDC transmission systems

Arne Hansen (retired June, 2000), Henrik Havemann (retired June, 2000)

    Research output: Contribution to journalJournal articleResearchpeer-review

    721 Downloads (Pure)


    In this paper we show how a fairly large proportion of those commutation failures that are due to single-phased short circuits to earth can be avoided. In a control circuit based on a digital signal processor (DSP) it is possible, with instantaneous results, to switch from a normal control strategy with equidistant firing pulses to a strategy that takes into consideration the potentially dangerous voltage changes on the supply lines, If the supply voltages are monitored continuously, it is possible to calculate the necessity of advancing the firing pulses to avoid commutation failures. In the paper such a calculation technique is described. The monitoring times may be approximately 50 μsec apart corresponding to a distance of 0.016 radians or about 1.
    Original languageEnglish
    JournalI E E E Transactions on Power Delivery
    Issue number3
    Pages (from-to)1022-1026
    Publication statusPublished - 2000

    Bibliographical note

    Copyright: 2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE


    Dive into the research topics of 'Decreasing the commutation failure frequency in HVDC transmission systems'. Together they form a unique fingerprint.

    Cite this