Fault detection method and device, computer equipment and storage medium thereof

The invention relates to a fault detection method and device, computer equipment and a storage medium thereof, and relates to the technical field of line detection. The method comprises the following steps: acquiring a leakage current signal in a to-be-detected line, and determining a first leakage current corresponding to a loop in the to-be-detected line according to the leakage current signal; determining a second leakage current corresponding to the surface of the cable in the to-be-detected line; and according to the first leakage current and the second leakage current, performing ground fault detection on the to-be-detected line to obtain a fault detection result corresponding to the to-be-detected line. When ground fault detection is carried out on the to-be-detected line, not only the first leakage current corresponding to the loop in the to-be-detected line is considered, but also the second leakage current corresponding to the surface of the cable in the to-be-detected line is considered, so that th