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In realm of Flexible AC Transmission Systems (FACTS), Distributed Power Flow Controller (DPFC) emerges as an innovative device offering same control capabilities as Unified Power Flow Controller (UPFC), but at a reduced cost and with enhanced reliability. DPFC’s reliability is bolstered by redundancy of its multiple series converters. However, presence of a single shunt converter in the DPFC system poses a challenge to its overall reliability. If shunt converter fails, DPFC functions as a controlled impedance, managing active power flow through line. This paper highlights DPFC’s control capacity, demonstrating how the system remains stable even when the shunt converter fails. The overall reliability of DPFC system is further enhanced through an accustomed force scheme used for each series converter. This scheme facilitates automatic switching in full/limited control mode of series converters and its effectiveness is validated in MATLAB/Simulink environment.

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Supplementary Control Enhances DPFC Performances During Shunt Converter Failure

  • 会议论文

  • 发表日期：

    2025年

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  • Vikash Anand,
  • S. K. Mallik,
  • Chetna Sinha

摘要

In realm of Flexible AC Transmission Systems (FACTS), Distributed Power Flow Controller (DPFC) emerges as an innovative device offering same control capabilities as Unified Power Flow Controller (UPFC), but at a reduced cost and with enhanced reliability. DPFC’s reliability is bolstered by redundancy of its multiple series converters. However, presence of a single shunt converter in the DPFC system poses a challenge to its overall reliability. If shunt converter fails, DPFC functions as a controlled impedance, managing active power flow through line. This paper highlights DPFC’s control capacity, demonstrating how the system remains stable even when the shunt converter fails. The overall reliability of DPFC system is further enhanced through an accustomed force scheme used for each series converter. This scheme facilitates automatic switching in full/limited control mode of series converters and its effectiveness is validated in MATLAB/Simulink environment.