Low voltage ride through enhancement using grey wolf optimizer to reduce overshoot current in the grid-connected PV system
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...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Hindawi Publishing Corporation
2022
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| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/45433/1/Low%20voltage%20ride%20through%20enhancement%20using%20grey%20wolf%20optimizer.pdf http://umpir.ump.edu.my/id/eprint/45433/ https://doi.org/10.1155/2022/3917775 |
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| Summary: | 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. |
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