Medium-voltage distribution network line-distribution transformer membership identification method

The invention relates to a medium-voltage distribution network line-distribution transformer membership identification method, which comprises the following steps of: acquiring operation condition data of a high-voltage side and a low-voltage side of a distribution transformer at the same moment under the same 10kV bus and the model and the capacity of the distribution transformer in a system file in an electricity utilization information acquisition system; the method comprises the following steps: for a high-power-supply low-metering special transformer user, deducing a high-voltage-side voltage of a distribution transformer according to a collected low-voltage-side measurement value of the distribution transformer based on a transformer equivalent circuit; for a high-voltage power supply and high-voltage metering special transformer user, calculating a B-phase voltage based on the collected A-phase voltage, C-phase voltage and voltage included angle; calculating a correlation coefficient of any two distrib