In order to ensure the stable operation of relay devices in different operating scenarios,a method for verifying the correctness of relay protection setting areas in power grids considering multi scenarios operation was proposed.Based on the instantaneous flow rate of the relay protection device,the operation mode of the device was calculated,and the impedance of each scene was calculated by combing the correlation matrix,branch impedance matrix,information matrix,and multi scenario area matrix,and the correctness of the relay protection setting area was checked by using the principle of phase-to-phase distance.The experimental results show that the proposed method has small verification error,short time,and strong verification ability.The proposed method is beneficial for improving the speed and accuracy of fault handling,ensuring the stable operation of the power grid.
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