Power grid industry classification load automatic statistical method and system

The invention provides a power grid industry classification load automatic statistical method and system. The method includes: acquiring power grid model data, and performing model splicing according to the model boundaries in the power grid model data to obtain a through full model network; performing network topology analysis of the full model network to obtain logic buses, the correspondence of logic buses and devices and association among devices; calculating statistical information of distribution network transformer industry classification loads, feeder industry classification loads and bus, transformer, line, station, area industry classification loads according to the network topology analyzing results. The method and system has the advantages that the economical operation manner of the power grid can be mastered fast by power grid scheduling staff, the operation manner can be arranged reasonably, power supply of important users can be guaranteed, and power supply reliability of the power grid is increased; no manual maintenance is needed, maintenance workload and intensity of the scheduling staff and automatic maintenance staff are relieved, and the method and system are worthy of popularization.