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In this work, a low voltage ride-through (LVRT) strategy based on Indian grid code compliance is suggested. In LVRT, the photovoltaic (PV) system stays linked to the grid when any fault occurs on the grid side. During this period, the inverter fed the reactive power to the grid as per the Grid Code in order to restore the voltage profile. Here, a two-stage grid-interfaced solar photovoltaic power plant is incorporated in which the boost converter tracks the MPPT point. A braking chopper has also been incorporated to keep the DC-link voltage below the limit throughout the fault, and a controller has been created to make the operation seamless. Simulations in MATLAB/Simulink are carried out to validate the proposed LVRT control approach in 100 kW double-stage grid interfaced solar PV under balanced sag. The effectiveness of the LVRT strategy is seen in the result waveforms.

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Fault Ride Through Control of Grid-Interfaced Solar Power Plant During Balanced Faults

  • 会议论文

  • 发表日期：

    2025年

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  • Abhishek Kumar Singh,
  • Dinesh Kumar Tiwari,
  • Jiwanjot Singh

摘要

In this work, a low voltage ride-through (LVRT) strategy based on Indian grid code compliance is suggested. In LVRT, the photovoltaic (PV) system stays linked to the grid when any fault occurs on the grid side. During this period, the inverter fed the reactive power to the grid as per the Grid Code in order to restore the voltage profile. Here, a two-stage grid-interfaced solar photovoltaic power plant is incorporated in which the boost converter tracks the MPPT point. A braking chopper has also been incorporated to keep the DC-link voltage below the limit throughout the fault, and a controller has been created to make the operation seamless. Simulations in MATLAB/Simulink are carried out to validate the proposed LVRT control approach in 100 kW double-stage grid interfaced solar PV under balanced sag. The effectiveness of the LVRT strategy is seen in the result waveforms.