Power distribution network fault positioning system

The utility model discloses a power distribution network fault positioning system. The power distribution network fault positioning system comprises a main station, fault indicators with built-in micro-power wireless modules, the built-in micro-power wireless modules and an acquisition terminal of a GPRS module; and communication is performed between the fault indicators in a micro-power wireless manner, the fault indicators is in wireless communication with the acquisition terminal in a micro-power wireless manner, and the acquisition terminal is in communication with the main station in a GPRS manner. The fault indicators having a micro-power communication function can perform wireless communication with the acquisition terminal, and the communication can also be performed between the fault indicators in the micro-power wireless manner; in the condition that the fault indicators are damaged or increased, the matching proportional number of acquisition terminals are not needed to be increased, and information of the fault indicators in the system can also be received through adjustments of the communication path main station, so equipment installation and maintenance are simple; and the GPRS communication expense is also greatly reduced, and the overall cost performance of the system is improved.