Development Of Digital Multifunction Electrical Energy Metering System

The development of threephase electronic multifunction electrical energy metering system applied in the digital power system is a new task in measuring industry now.Based on CCS,with electronic instrument transformer,merge cells and DSP as the main component,a digital electric energy metering system is developed,with it,the metering function,the multi-rate function,the demand function and the event-record function are realized.The method how to get the network data is introduced.The communication with upper computer is completed,and simple calibration method of metering system and the method of process cure are introduced.At last,the source of error and error in theory are presented based on the comparement between the electronic metering system and the traditional metering system,and give a new check program.