Power transmission line lightning stroke fault positioning system and method

The invention discloses a power transmission line lightning stroke fault positioning system, which comprises a host module and a slave module, and each of the host module and the slave module comprises a light source, an attenuator, a polarizer, a detector, an acquisition module, a time synchronization module with a built-in optical module, an optical communication module, a wavelength division multiplexer and an industrial personal computer. A high-power light source is adopted, the measurement range of the system can be effectively expanded, the detection sensitivity of the optical fiber during long-distance detection is guaranteed, and meanwhile the lightning stroke fault positioning precision of the system is improved by means of the high-precision time synchronization performance of the optical communication time synchronization module. 本发明公开了一种输电线路雷击故障定位系统，包括主机模块和从机模块，主机模块和从机模块均包括光源、衰减器、起偏器、探测器、采集模块、内置光模块的对时模块、光通信模块、波分复用器、工控机。本发明采用高功率光源，可有效提高系统测量范围，并保证光纤在长距离探测时的探测灵敏度，同时利用光通信对时模块的高精度时间对时性能，提升系统雷击故障定位精度。