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Evaluation method for setting value coordination of time-step protections using sensitivity centre analysis
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DOI：10.1016/j.ijepes.2026.111743.png)
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Abstract
En 中文
• A sensitivity graph signal model for the protection coordination of the power grid is constructed. • The graph Fourier transform is used to assess the shift of the sensitivity centre of the protections. • An evaluation method for risk points and hidden faults in relay coordination is proposed. • The performance is validated on the distance relays of an actual 220 kV grid.
Keywords:
Sensitivity centre
Time-step protection
Protection coordination
GFT
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