Substation is always equipped with electric energy metering system which does not have the function of error remote calibration. In this paper, we introduce the error remote calibration system related to energy measuring devices to achieve two functions: on the one hand is to minimize the relevant losses by acquiring and processing the data of voltage transformers and current transformers, real-time monitoring the running status of voltage and current in secondary circuit and measuring the error of watt-hour meters; on the other hand, by means of the remote monitored data which is collected by the mainstream of communications to manage and analyze the data, alarm timely when problems happen and realize the automation management of energy metering devices.