Power distribution network single-phase high-resistance grounding fault line selection method, system and device

The invention discloses a power distribution network single-phase high-resistance grounding fault line selection method, system and device. According to the invention, a plurality of fault characteristic quantities are obtained, a weight is distributed to each fault characteristic quantity, the significance degree of each fault characteristic quantity is quantitatively represented, normalization processing is performed on each fault characteristic quantity after weight distribution, the information of each feeder line when a single-phase high-resistance fault occurs in a system is reflected, and dimensionality reduction processing is performed on each fault characteristic normalization value, so that data redundancy can be reduced, and the calculation speed can be improved; and finally, afinal line selection result is obtained by a fusion line selection model constructed by combining a support vector machine, a Logistic regression classifier and a random forest classifier. The line selection accuracy of the f