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Enhancing Commutation Failure Immunity of LCC-HVDC Systems with a Fuzzy Adaptive PI Scheme and STATCOM Integration.

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Title: Enhancing Commutation Failure Immunity of LCC-HVDC Systems with a Fuzzy Adaptive PI Scheme and STATCOM Integration.
Authors: Amari, Abderrahmane1 (AUTHOR), Moussa, Mohamed Ali2 (AUTHOR), Kherfane, Samir1,3 (AUTHOR), M'hamdi, Benalia3,4 (AUTHOR), Benaissa, Tahar1,5 (AUTHOR), Elbar, Mohamed1,3 (AUTHOR), Zaitsev, Ievgen2,4 (AUTHOR) zaitsev@i.ua, Kuchansky, Vladislav3,5 (AUTHOR)
Source: Energies (19961073). May2026, Vol. 19 Issue 9, p2047. 18p.
Subject Terms: *Adaptive fuzzy control, *Reactive power control, *Electric power system faults, *Fault tolerance (Engineering), *Electric power system stability, *Direct currents
Abstract: Commutation failures (CFs), which occur when current transfer between valves in line-commutated converter high-voltage direct current (LCC-HVDC) systems is disrupted, pose a challenge in weak alternating current (AC) networks. This paper introduces a coordinated control strategy that combines a fuzzy self-tuning proportional-integral (PI) controller (FSTPIC) and a static synchronous compensator (STATCOM) device to mitigate CFs and enhance system stability. The approach applies the FSTPIC to both converters of the HVDC link, while the STATCOM at the inverter side delivers dynamic reactive power and voltage support during AC faults. We test this strategy on the CIGRE HVDC benchmark system using MATLAB/SIMULINK simulations. The results demonstrate that the proposed method significantly reduces CFs, mitigates transient oscillations, and shortens recovery time compared to conventional control techniques. This coordinated control boosts voltage stability and the system's ability to ride through faults, confirming its superiority under various fault scenarios in weak-grid conditions. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 193715943
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Enhancing Commutation Failure Immunity of LCC-HVDC Systems with a Fuzzy Adaptive PI Scheme and STATCOM Integration.
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  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. May2026, Vol. 19 Issue 9, p2047. 18p.
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  Data: *<searchLink fieldCode="DE" term="%22Adaptive+fuzzy+control%22">Adaptive fuzzy control</searchLink><br />*<searchLink fieldCode="DE" term="%22Reactive+power+control%22">Reactive power control</searchLink><br />*<searchLink fieldCode="DE" term="%22Electric+power+system+faults%22">Electric power system faults</searchLink><br />*<searchLink fieldCode="DE" term="%22Fault+tolerance+%28Engineering%29%22">Fault tolerance (Engineering)</searchLink><br />*<searchLink fieldCode="DE" term="%22Electric+power+system+stability%22">Electric power system stability</searchLink><br />*<searchLink fieldCode="DE" term="%22Direct+currents%22">Direct currents</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Commutation failures (CFs), which occur when current transfer between valves in line-commutated converter high-voltage direct current (LCC-HVDC) systems is disrupted, pose a challenge in weak alternating current (AC) networks. This paper introduces a coordinated control strategy that combines a fuzzy self-tuning proportional-integral (PI) controller (FSTPIC) and a static synchronous compensator (STATCOM) device to mitigate CFs and enhance system stability. The approach applies the FSTPIC to both converters of the HVDC link, while the STATCOM at the inverter side delivers dynamic reactive power and voltage support during AC faults. We test this strategy on the CIGRE HVDC benchmark system using MATLAB/SIMULINK simulations. The results demonstrate that the proposed method significantly reduces CFs, mitigates transient oscillations, and shortens recovery time compared to conventional control techniques. This coordinated control boosts voltage stability and the system's ability to ride through faults, confirming its superiority under various fault scenarios in weak-grid conditions. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=193715943
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        Value: 10.3390/en19092047
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        Text: English
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        PageCount: 18
        StartPage: 2047
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      – SubjectFull: Adaptive fuzzy control
        Type: general
      – SubjectFull: Reactive power control
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      – SubjectFull: Electric power system faults
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      – SubjectFull: Fault tolerance (Engineering)
        Type: general
      – SubjectFull: Electric power system stability
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      – SubjectFull: Direct currents
        Type: general
    Titles:
      – TitleFull: Enhancing Commutation Failure Immunity of LCC-HVDC Systems with a Fuzzy Adaptive PI Scheme and STATCOM Integration.
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            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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              Value: 19
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              Value: 9
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