Equipment fault positioning and abnormal state discrimination method

The invention discloses an equipment fault positioning and abnormal state discrimination method. The method comprises the following steps: S1, preprocessing data of a charging and discharging system of an electric vehicle; s2, evaluating the preprocessed data, and constructing a quality evaluation index system and a quality evaluation model oriented to the charging and discharging data of the electric vehicle according to the characteristics of the charging and discharging data of the electric vehicle; s3, performing data conversion through data generalization, data standardization and data attribute construction, and providing a standard database access interface and a file transmission interface; s4, making simplification and hypothesis for a specific data mining purpose, and obtaining an effective mining model by using a data mining technology; s5, performing visualization processing after data processing; and S6, data anomaly detection. According to the equipment fault positioning and abnormal state discr