State estimation method and system for electric energy metering devices

The invention discloses a state estimation method and system for electric energy metering devices. The method comprises steps as follows: relevant estimated parameters of each electric energy metering device in a virtual network model are acquired; a domain model of all the electric energy metering devices in the virtual network model is built by utilizing all relevant estimated parameters; whether the state of each electric energy metering device is normal is judged by referring to the preset state estimation rule according to the domain model; when the states of all electric energy metering devices are normal, the state estimation result is normal; otherwise, the state estimation result is abnormal. The overall estimation process is automated and is automatically executed by relative programs in actual application, further, a computing method is simple, and the problems that the conventional state estimation method requires a large amount of manual intervention and complex computing process, the work efficiency is low and the reliability of the state estimation result is low are solved effectively.