Big-data analysis system based on intelligent ammeters

The invention provides a big-data analysis system based on intelligent ammeters, and belongs to the field of an electric power system. The system comprises the following steps: big data composed of feedback information of all the intelligent ammeters installed in a distribution network line is obtained, and according to the big data, a notification list of a distribution network is updated; and a time stamp fed back by each intelligent ammeter after power failure is received, and according to the time stamp, a fault line in the distribution network is obtained. According to the invention, through updating the notification list of the distribution network, the fault line in the distribution network is determined according to the updated notification list, misjudgments brought by intelligent ammeters incapable of normal work are avoided, detection inaccuracy which may occur in a low-current line selection system is solved, and the detection accuracy is improved.