A less-intrusive approach to stabilize VSC transmission against highly variable grid strength

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Zhang, Zehua and Chen, Dong and Givaki, Kamyab and Xu, Lie (2020) A less-intrusive approach to stabilize VSC transmission against highly variable grid strength. IEEE Journal of Emerging and Selected Topics in Power Electronics. 3030362. ISSN 2168-6777 (https://doi.org/10.1109/JESTPE.2020.3030362)

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Abstract

A less-intrusive solution to stabilize a Voltage Source Converter (VSC) over an unknown grid strength is presented in this paper. The existence of equilibrium point is investigated as a pre-requisite to stabilization. By partially imposing grid forming control, a simple auxiliary outer loop is proposed to exhaust the physical limit of power delivery in steady state and provide support to fault-ride-through operations over a wide range of grid strength. The proposed control can be used to upgrade a commissioned VSC with inner current loop intact; it also offers a non-intrusive solution to stabilize VSCs externally. The effectiveness of the proposed schemes are verified by analysis in frequency domain and simulations in Electromagnetic Transient (EMT) time domain considering change of grid strength and fault-ride-through.

ORCID iDs

Zhang, Zehua, Chen, Dong, Givaki, Kamyab and Xu, Lie ORCID logoORCID: https://orcid.org/0000-0001-5633-7866;
  • Item type:Article
    ID code:74147
    Dates:
    Date
    Event
    12 October 2020
    Published
    12 October 2020
    Published Online
    29 September 2020
    Accepted
    Notes:© 2020 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:08 Oct 2020 10:32
    Last modified:11 Nov 2024 12:51
    URI:https://strathprints.strath.ac.uk/id/eprint/74147
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