Adaptive unit protection for lines connecting large solar plants using incremental current ratio

Chowdhury, Arghadeep and Paladhi, Subhadeep and Pradhan, Ashok Kumar (2021) Adaptive unit protection for lines connecting large solar plants using incremental current ratio. IEEE Systems Journal. ISSN 1932-8184 (https://doi.org/10.1109/JSYST.2021.3107331)

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Abstract

Control schemes in a solar plant complying with different grid codes modulate the output voltage and current significantly during the fault. In this article, the issue with conventional current differential approaches for the line connecting the large solar plant is analyzed and a new protection technique using both end incremental current phasors is proposed. The proposed method uses two criteria to identify the internal faults in such connectivity. The first criterion is based on the ratio of both end incremental phase current phasors, and the second one uses the magnitude ratio of positive sequence incremental currents. Both the criteria are adaptive to line terminal currents and complement each other enriching the method applicable for any system condition. The performance of the proposed method is tested for different internal and external fault cases and found to be accurate. The compatibility of the proposed method is also validated using a real-time simulator. Comparative assessment with conventional current differential techniques reveals the superiority of the proposed approach.

  • Item type:Article
    ID code:78042
    Dates:
    Date
    Event
    20 September 2021
    Published
    20 September 2021
    Published Online
    19 August 2021
    Accepted
    Notes:© 2021 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:06 Oct 2021 14:53
    Last modified:17 Apr 2024 00:46
    URI:https://strathprints.strath.ac.uk/id/eprint/78042
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