Research on the Suppression Method of Inrush Current in Industrial Factory Distribution Transformer
In response to the impact of transformer excitation inrush current on actual operation projects,this study analyzes the causes of transformer excitation inrush current,the negative effects of grid voltage sag,ferromagnetic resonance overvoltage,and relay protectionmisoperation caused by excitation inrush current,and combines the problems existing in the actual operation process of a certain factory to conduct research.By analyzing the existing methods for suppressing transformer excitation inrush current.The actual data after the implementation of a certain project has verified that the time of power transformer input can be controlled through phase controlled switch technology,which can effectively reduce the excitation inrush current of the transformer,thereby improving power supply reliability and reducing the potential adverse effects of transformer input.
inrush currenttransformer closingvoltage fluctuationsovervoltagevoltage sag
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