Research on Phasor Test at Start-up of 500 kV Line Protection
The correctness of data sampling directly affects the reliability of relay protection devices.Based on the renovation project of a 500 kV line protection device,this paper uses the capacitive load characteris-tics of distributed capacitance and proposes the phasor test with load at start-up of power transmission,which verifies the correctness of the data sampling of the protection device and ensures the safe and stable operation of the power grid.
500 kVline protectionstart-up of power transmissionphasor test
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