Patent ID: 11874317
Assignee: SCHNEIDER ELECTRIC INDUSTRIES SAS
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 0:
1. A ground fault directivity detection method, comprising:
sampling at least a part of a current signal to obtain a numerical matrix;
detecting whether a maximum value in the numerical matrix is greater than a preset enabling threshold;
providing the numerical matrix as an input to a ground fault directionality detection neural network to predict whether the current signal is an upstream fault current signal or a downstream fault current signal in a case that the maximum value in the numerical matrix is greater than or equal to the preset enabling threshold, and detecting whether a maximum value in a next numerical matrix is greater than the preset enabling threshold in a case that the maximum value in the numerical matrix is smaller than the preset enabling threshold;
calculating a label vector corresponding to the input by the ground fault directionality detection neural network in response to the input provided to the ground fault directionality detection neural network, wherein the label vector indicates whether the current signal is an upstream fault current signal or a downstream fault current signal;
receiving a ground fault confirmation signal by the ground fault directionality detection neural network; and
outputting the label vector by the ground fault directionality detection neural network when the ground fault confirmation signal indicates that the current signal is a ground fault current signal.