Assessing the impact of VSC-HVDC on the interdependency of power system dynamic performance in uncertain mixed AC/DC systems

Rian Fatah Mochamad, Robin Preece

    Research output: Contribution to journalArticlepeer-review

    Abstract

    In recent years, VSC-HVDC has emerged as an excellent solution for transmitting offshore renewable energy sources (RES) and strengthening transmission corridors. It is also reported in the literature that VSC-HVDC is able to enhance specific types of stability. With growing capacity of VSC-HVDC and increasing uncertainty in the current power system, it is essential to perform a rigorous analysis of its impact on the interdependency of power system dynamics. This paper presents a methodology for the thorough assessment of the impact of VSCHVDC on interdependency among four types of stability: smalldisturbance rotor angle, large-disturbance rotor angle, frequency and voltage. This analysis is performed assuming uncertain conditions for various VSC-HVDC topologies and system loading and generation conditions. The impact of the VSC-HVDC on the interdependency of dynamic performance is assessed using the Spearman correlation coefficient as a quantification tool. The results obtained show that a significant alteration over the interdependency between power system dynamics occurs with the addition of VSC-HVDC.
    Original languageEnglish
    JournalI E E E Transactions on Power Systems
    DOIs
    Publication statusPublished - 10 Jul 2019

    Keywords

    • VSC-HVDC
    • small-disturbance
    • large-disturbance
    • frequency
    • voltage
    • interdependency

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