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Low Voltage Ride through Enhancement Using Grey Wolf Optimizer to Reduce Overshoot Current in the Grid-Connected PV System

Author

Listed:
  • N. Jaalam
  • A.Z. Ahmad
  • A. M. A. Khalid
  • R. Abdullah
  • N. M. Saad
  • S. A. Ghani
  • L. N. Muhammad
  • Amin Jajarmi

Abstract

In today’s world, the DG should not be disconnected in the event of a power outage but should instead remain linked to the grid and supported by reactive power. This can be accomplished by implementing the low voltage ride through (LVRT) with a proportional integral (PI) controller. As a result, the voltage profile can be enhanced. The PI controller, on the other hand, has drawbacks in that setting the gain takes a long time and results in an overshoot current on the grid, which could trigger the protection relay. To address this issue, this paper proposes employing a grey-wolf optimizer (GWO) to enhance the LVRT in a 5 MW three-phase grid-connected PV system. A MATLAB simulation was carried out then under a three-phase fault and load disturbance to verify the efficiency. It is found that, even with a 70% voltage sag, the PV system can remain connected to the electrical grid while minimising overshoot current on the grid side.

Suggested Citation

  • N. Jaalam & A.Z. Ahmad & A. M. A. Khalid & R. Abdullah & N. M. Saad & S. A. Ghani & L. N. Muhammad & Amin Jajarmi, 2022. "Low Voltage Ride through Enhancement Using Grey Wolf Optimizer to Reduce Overshoot Current in the Grid-Connected PV System," Mathematical Problems in Engineering, Hindawi, vol. 2022, pages 1-12, May.
    • Handle: RePEc:hin:jnlmpe:3917775
    DOI: 10.1155/2022/3917775
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