Fault current limiter of VSC-HVDC systems using variable resistive bridge controller
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AL-Ismail, FS
Abido, MA
Hossain, MA
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Abstract
This paper proposes a fuzzy logic controller (FLC) based variable resistive bridge type fault current limiter (VR-BFCL) to minimize the impact of faults on voltage source converter high voltage direct current (VSC-HVDC) systems. FLC for VR-BFCL is developed to dynamically insert the appropriate current limiting resistance during contingencies to maintain the fault currents within the acceptable limit. The proposed controller effectively provides variable duties to generate and insert controllable resistance in the system based on fluctuation of direct current (DC) link voltage and point of common coupling (PCC) voltage. The efficacy of the proposed controller is justified through simulations work for balanced and unbalanced faults. The results demonstrate that oscillations in PCC voltage and DC link voltage can be maintained within the acceptable range by controlling fault current through the insertion of the appropriate resistance. It is also found that the proposed controller outperforms the existing method.
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Ain Shams Engineering Journal
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© 2021 The Author(s). Published by Elsevier BV on behalf of Faculty of Engineering, Ain Shams University. This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Electrical engineering
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Alam, MS; AL-Ismail, FS; Abido, MA; Hossain, MA, Fault current limiter of VSC-HVDC systems using variable resistive bridge controller, Ain Shams Engineering Journal, 2021