Distributed PLL-based control of offshore wind turbines connected with diode-rectifier based HVDC systems

Yu, Lujie and Li, Rui and Xu, Lie (2017) Distributed PLL-based control of offshore wind turbines connected with diode-rectifier based HVDC systems. IEEE Transactions on Power Delivery. ISSN 0885-8977 (https://doi.org/10.1109/TPWRD.2017.2772342)

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Abstract

A distributed PLL-based frequency control is proposed in this paper for offshore wind turbine converters connected with diode-rectifier based high-voltage-direct-current (HVDC) systems. The proposed control enables a large number of wind turbines to work autonomously to contribute to the offshore AC frequency and voltage regulation. The proposed control also provides automatic synchronization of the offline wind turbines to the offshore AC grid. Stability of the proposed frequency control is analyzed using root locus method. Moreover, an active dc voltage control of the onshore modular multilevel converter (MMC) is proposed to ride-through onshore AC fault, where the onshore MMC converter quickly increases the dc voltage by adding additional submodules in each phase, in order to rapidly reduce wind farm active power generation so as to achieve quick active power re-balance between the offshore and onshore sides. Thus the overvoltage of the submodule capacitor is alleviated during the onshore fault, reducing the possibility of system disconnection. Simulation results in PSCAD verify the proposed control strategy during start-up, synchronization and under onshore and offshore fault conditions.

ORCID iDs

Yu, Lujie ORCID logoORCID: https://orcid.org/0000-0002-0889-7751, Li, Rui ORCID logoORCID: https://orcid.org/0000-0001-8990-7546 and Xu, Lie ORCID logoORCID: https://orcid.org/0000-0001-5633-7866;
  • Item type:Article
    ID code:62289
    Dates:
    Date
    Event
    10 November 2017
    Published
    6 November 2017
    Accepted
    Notes:© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:09 Nov 2017 09:47
    Last modified:11 Nov 2024 11:50
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/62289
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