Lightning stroke fault positioning method and system

The embodiment of the invention discloses a lightning stroke fault positioning method and system, and the method comprises the steps: obtaining corresponding fault tripping data according to a lightning stroke time period and a lightning stroke influence radius, a fault tripping line section, a lightning stroke tripping line section, a lightning stroke fault line and a first monitoring sensor and a second monitoring sensor at two sides of a lightning stroke fault point are determined in sequence; that is, the third distance between the lightning stroke fault point and the first monitoring sensor and/or the fourth distance between the lightning stroke fault point and the second monitoring sensor are/is determined by continuously reducing the range, so that the accurate position of the lightning stroke fault point is determined, the lightning stroke fault positioning cost is low, the positioning precision is high, and the positioning accuracy is high. The method does not need manual data confirmation and analys