Electric energy meter state evaluation method based on abnormal event fault correlation degree

The invention discloses an electric energy meter state evaluation method based on an abnormal event fault correlation degree, and relates to an electric energy meter state evaluation method. At present, alternating of electric energy meters lags behind or is too frequent, alternating and scrapping of the electric energy meters are inaccurate, and manpower and material resources are wasted. The method comprises the following steps: selecting electric energy meter data in which an abnormal event occurs in a certain batch; wherein the data is used as basic data for building an anomaly evaluationmodel; abnormal events are divided into full events and metering abnormal events. And if the occurrence frequency is not related to the electric energy meter fault, calculating the fault correlation degree by using a Bayesian formula, if the occurrence frequency is related to the electric energy meter fault, respectively counting the fault probability according to the occurrence frequency, and establishing a metering abno