Control-based fault current limiter for modular multilevel voltage-source converters
Lacerda, Vinícius A. and Monaro, Renato M. and Peña Alzola, Rafael and Campos-Gaona, David and Coury, Denis V. and Anaya-Lara, Olimpo (2020) Control-based fault current limiter for modular multilevel voltage-source converters. International Journal of Electrical Power and Energy Systems, 118. 105750. ISSN 0142-0615 (https://doi.org/10.1016/j.ijepes.2019.105750)
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Abstract
The sharp rise in short-circuit currents of voltage-source converters is still a challenge for DC grid reliability, which imposes stringent requirements on DC breakers. Therefore, fault current limiters are used for slowing down the rise in short-circuit currents. This paper proposes a control-based fault current limiter (CbFCL) for modular multilevel converters (MMCs). The proposed method reduces the fault current purely by control action, thus not incurring costs and not leading to reduced stability, energy storage, conduction losses or the need for maintenance as impedancebased fault current limiters do. The CbFCL does not affect the system in normal operation, acting only in the presence of a fault. The CbFCL performance was evaluated performing simulations of a four terminal DC grid. The results confirmed that the CbFCL was able to limit the fault current of the MMC while keeping the AC currents within their nominal limits, and thus producing a minor impact on the grid operation.
ORCID iDs
Lacerda, Vinícius A., Monaro, Renato M., Peña Alzola, Rafael, Campos-Gaona, David ORCID: https://orcid.org/0000-0002-0347-6288, Coury, Denis V. and Anaya-Lara, Olimpo ORCID: https://orcid.org/0000-0001-5250-5877;-
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Item type: Article ID code: 70694 Dates: DateEvent30 June 2020Published10 December 2019Published Online22 November 2019Accepted27 May 2019SubmittedSubjects: Technology > Electrical engineering. Electronics Nuclear engineering Department: Faculty of Engineering > Electronic and Electrical Engineering Depositing user: Pure Administrator Date deposited: 05 Dec 2019 09:43 Last modified: 11 Nov 2024 12:17 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/70694