Method and system for determining electric energy abnormity of metering box

The invention provides a metering box electric energy abnormity determination method and a metering box electric energy abnormity determination system. The extraction module is used for extracting electric energy characteristic data from the electricity consumption practical data of the metering box, wherein the electric energy characteristic data comprises total electricity consumption in unit time, peak range electricity consumption duration, internal peak range electricity consumption times, valley range electricity consumption duration and valley range electricity consumption times; the electric energy anomaly detection module is used for learning through the electric energy characteristic data to generate a preset condition, and comparing the electric energy characteristic data with the preset condition to judge whether the electricity consumption is normal or not; the storage module is used for storing and managing the electric energy characteristic data, the preset condition and the electric energy sta