The invention is suitable for the technical field of
edge computing, and relates to an AC charging
pile fault diagnosis method and
system based on
edge computing, and the method comprises the steps: a
transformer area fusion terminal collects the total power of a
transformer area and the charging characteristic power of a charging
pile through HPLC communication; the power and current of the charging
pile during charging, and the residual current and short-circuit characteristic current detected by the residual current protector are measured through the intelligent electric meter. Based on the matching relationship between the total power change of the
transformer area and the charging characteristic power, establishing the mapping relationship between the intelligent electric meter and the corresponding AC charging pile; whether the
alternating current charging pile breaks down or not is judged by combining
sequential logic of the total power change, the residual current change, the short-circuit characteristic current change and the power change of the intelligent electric meter, and the fault type is determined; and after the fault is determined, the transformer area fusion terminal reports the fault information to the
system master station through the communication network. According to the method, additional hardware facilities do not need to be added, the real-time performance, the accuracy and the safety of fault diagnosis of the
alternating current charging pile are high, and the cost is low.