Intelligent power distribution network ground fault monitoring method and system

The invention discloses an intelligent power distribution network grounding fault monitoring method and system, and relates to the technical field of power grid faults. Acquiring an instantaneous current signal sequence, a current harmonic signal sequence, a load parameter signal sequence and a ground wire temperature signal sequence of the distribution line and the ground wire in a plurality of time windows; carrying out kurtosis analysis; acquiring a ground fault integrated recognizer; through a cost analysis module, cost analysis of ground fault monitoring and identification is carried out to acquire cost information; obtaining four pieces of signal data cost information and four pieces of signal kurtosis data cost information; according to the ground fault integrated recognizer, integrated ground fault recognition is carried out, an integrated recognition result is corrected and calculated, and a ground fault recognition result is obtained. According to the invention, the technical problems of low accurac