Coordinated Voltage Control of Offshore Wind Farms Combined with AC Grid based on OPF-MPC Method

Pengda Wang, Qiuwei Wu, Sheng Huang, Canbing Li, Bin Zhou

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    This paper proposes a coordinated voltage control (CVC) scheme for the offshore wind farms (OWFs) with AC grid based on the optimal power flow (OPF) and model predictive control (MPC). In the proposed scheme, the AC grid and wind turbine generators (WTGs) are coordinated to keep voltages within the feasible range, reduce the active power losses and optimize reactive power distribution among the OWFs with AC grid. In the upper layer, an OPF-based voltage control method is designed for AC grid, which can achieve the optimal power flow considering the active power outputs of OWFs, to minimize the voltage deviations of all buses. In the lower layer, a MPC-based voltage control method is designed for each OWF, which can optimize reactive power distribution among WTGs inside each OWF with the reactive power output references of each OWF from the upper layer. The analytic sensitivity coefficient calculation method is applied to improve the computation efficiency. Two offshore wind farms with a modified IEEE 5 bus system were used to verify the proposed CVC scheme.
    Original languageEnglish
    Title of host publicationProceedings of 12th IEEE PES Asia-Pacific Power and Energy Engineering Conference
    Number of pages5
    PublisherIEEE
    Publication date2020
    ISBN (Print)9781728157481
    DOIs
    Publication statusPublished - 2020
    Event2020 IEEE PES Asia-Pacific Power and Energy Engineering Conference - Xiamen, China
    Duration: 20 Sep 202023 Sep 2020
    Conference number: 12
    https://ieeexplore.ieee.org/xpl/conhome/9212309/proceeding

    Conference

    Conference2020 IEEE PES Asia-Pacific Power and Energy Engineering Conference
    Number12
    Country/TerritoryChina
    CityXiamen
    Period20/09/202023/09/2020
    Internet address
    SeriesAsia-pacific Power and Energy Engineering Conference, Appeec
    ISSN2157-4847

    Keywords

    • Optimal power flow
    • Model predictive control
    • Coordinated voltage control
    • Reactive power dispatch

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