The invention discloses a fault on-line monitoring and real-
time distance measurement method for an armored
power cable. Cable fault
distance measurement is carried out through a return circuit formed by a cable armored layer and the ground. Due to the fact that no direct electric connection exits between a
distance measurement system and a core wire of the high-
voltage cable, safety and reliability are achieved, and the normal
power transmission task of the cable is not affected in the working process. According to the fault on-line monitoring and real-
time distance measurement method for the armored
power cable, through the return circuit formed by the cable armored layer and the ground,
distance measurement of a cable fault point is carried out through the
wavelet analysis technology, two functions of on-line monitoring and real-
time distance measurement of the cable fault are achieved, the complexity of equipment and the complexity of the operation are simplified, the fault detection efficiency and distance measurement efficiency are improved, the technical problem that the
power cable fault is generally short of an effective on-line monitoring and real-time distance measurement method is resolved, the two functions of fault detection and fault distance measurement are combined, the complexity and cost of the equipment are lowered, the complexity of the operation is reduced, and the fault detection efficiency and distance measurement efficiency are improved.