Scholarlink

<p>The increasing penetration of doubly fed induction generator (DFIG)-based wind energy conversion systems (WECS) into modern power grids has raised concerns about their low-voltage ride-through (LVRT) capability, particularly under severe grid disturbances. This study analyzes the LVRT performance of grid-connected DFIG wind systems under line-to-line (LL) and three-phase (LLL) faults for different voltage dips. It investigates the effectiveness of flexible AC transmission system (FACTS) devices, specifically the static VAR compensator (SVC) and thyristor-controlled series capacitor (TCSC), in enhancing system stability. A detailed MATLAB/Simulink-based simulation model is developed to assess the LVRT capability of the proposed system when subjected to a voltage dip for symmetrical and unsymmetrical fault scenarios. The comparative analysis demonstrates that the coordinated operation of the system with TCSC significantly improves fault ride-through capability by enhancing the transient stability of stator and rotor currents, point of common coupling (PCC) voltage, and DC-link voltage. Finally, the effectiveness of the proposed strategies is tested and validated using an OPAL-RT real-time simulation setup, ensuring accurate performance evaluation under practical operating conditions.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

LVRT capability analysis of DFIG-based wind systems under LL and LLL faults using SVC and TCSC

  • 期刊论文

  • 发表日期：

    2025年11月24日

查看全文
  • Pritam Kumar Nirala,
  • Ravi Bhushan,
  • Kushal M. Jagtap

摘要

The increasing penetration of doubly fed induction generator (DFIG)-based wind energy conversion systems (WECS) into modern power grids has raised concerns about their low-voltage ride-through (LVRT) capability, particularly under severe grid disturbances. This study analyzes the LVRT performance of grid-connected DFIG wind systems under line-to-line (LL) and three-phase (LLL) faults for different voltage dips. It investigates the effectiveness of flexible AC transmission system (FACTS) devices, specifically the static VAR compensator (SVC) and thyristor-controlled series capacitor (TCSC), in enhancing system stability. A detailed MATLAB/Simulink-based simulation model is developed to assess the LVRT capability of the proposed system when subjected to a voltage dip for symmetrical and unsymmetrical fault scenarios. The comparative analysis demonstrates that the coordinated operation of the system with TCSC significantly improves fault ride-through capability by enhancing the transient stability of stator and rotor currents, point of common coupling (PCC) voltage, and DC-link voltage. Finally, the effectiveness of the proposed strategies is tested and validated using an OPAL-RT real-time simulation setup, ensuring accurate performance evaluation under practical operating conditions.