Variable gain control scheme of DFIG-based wind farm for over-frequency support

Yujun Li, Zhao Xu, Jianliang Zhang, Kit Po Wong

    Research output: Contribution to journalArticle

    Abstract

    In order to mitigate over-frequency events in the power systems, this paper proposes a new variable gain based control strategy to maximize the frequency support while minimizing impacts to the overall energy production for a wind power plant (WPP). Because of different wind conditions, the energy production by each WT is not equally compromised by adaptively adjusting the droop gains according to the different rotor speeds so that minimal reduction of energy production can be ensured. The control performance was fully investigated in a doubly fed induction generator (DFIG) based WPP and the results clearly indicate the proposed variable droop gain scheme can harness more wind energy than the conventional same droop gain scheme while providing similar frequency support.

    LanguageEnglish
    Pages379-391
    Number of pages13
    JournalRenewable Energy
    Volume120
    DOIs
    StatePublished - 1 May 2018

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    Asynchronous generators
    Gain control
    Farms
    Wind power
    Power plants
    Rotors

    Cite this

    Li, Yujun ; Xu, Zhao ; Zhang, Jianliang ; Wong, Kit Po. / Variable gain control scheme of DFIG-based wind farm for over-frequency support. In: Renewable Energy. 2018 ; Vol. 120. pp. 379-391
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    abstract = "In order to mitigate over-frequency events in the power systems, this paper proposes a new variable gain based control strategy to maximize the frequency support while minimizing impacts to the overall energy production for a wind power plant (WPP). Because of different wind conditions, the energy production by each WT is not equally compromised by adaptively adjusting the droop gains according to the different rotor speeds so that minimal reduction of energy production can be ensured. The control performance was fully investigated in a doubly fed induction generator (DFIG) based WPP and the results clearly indicate the proposed variable droop gain scheme can harness more wind energy than the conventional same droop gain scheme while providing similar frequency support.",
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    Variable gain control scheme of DFIG-based wind farm for over-frequency support. / Li, Yujun; Xu, Zhao; Zhang, Jianliang; Wong, Kit Po.

    In: Renewable Energy, Vol. 120, 01.05.2018, p. 379-391.

    Research output: Contribution to journalArticle

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    AU - Xu,Zhao

    AU - Zhang,Jianliang

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    AB - In order to mitigate over-frequency events in the power systems, this paper proposes a new variable gain based control strategy to maximize the frequency support while minimizing impacts to the overall energy production for a wind power plant (WPP). Because of different wind conditions, the energy production by each WT is not equally compromised by adaptively adjusting the droop gains according to the different rotor speeds so that minimal reduction of energy production can be ensured. The control performance was fully investigated in a doubly fed induction generator (DFIG) based WPP and the results clearly indicate the proposed variable droop gain scheme can harness more wind energy than the conventional same droop gain scheme while providing similar frequency support.

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