Method and system for testing stepping stress of electric energy meter under combined action of temperature and humidity stress

The invention discloses an electric energy meter stepping stress test method and system under the combined action of temperature and humidity stress. A degradation model in an electric energy meter temperature and humidity accelerated stress model and an acceleration model in the electric energy meter temperature and humidity accelerated stress model are established according to temperature and humidity information; obtaining the temperature and humidity stress limit of the electric energy meter through a pre-experiment; determining each test applied stress according to the temperature and humidity stress limit of the electric energy meter; determining the minimum application time of each test stress according to the acceleration model; and according to the determined degradation model, the stress applied to each test and the minimum time for applying the stress to each test, carrying out a double-cross stepping stress test. According to the method, the defects that a traditional constant stress test method i