Cable partial discharge positioning system and method based on travelling wave principle

Provided is a cable partial discharge positioning system and method based on the travelling wave principle. A cable line (1) is included. The system is characterized in that the two ends of the cable line (1) are respectively provided with travelling wave collectors (4) which are used for collecting travelling wave pulse signals, the travelling wave collector (4) at each end is connected with a time synchronization unit used for time synchronization, and the travelling wave collectors (4) at the two ends of the cable line (1) are connected via a communication network (2). According to the system, the travelling wave collectors are used for collecting fault travelling-wave pulse waveforms in the cable line, and time synchronization signals provided by a GPS time synchronization device are used to accurately determine fault points, so that positioning time is short, and the cable line is prevented from secondary damage.