Error Analysis and Improved Measures for Centralized Multi-users Electronic Energy Meters

The basic error of ADE7755 and its application in the remote meter reading system were introduced. The error between the remote meter reading data and the register displaying was detailed analyzed in centralized multi-users electronic energy meters. The power down test simulated work-site condition showed that frequent power down was the main factor causing the error. New improved methods of the hardware interface circuit and micro-controller programming were presented to achieve an agreement between the remote meter reading data and the register displaying. The application example analysis showed that the method can be widely applied in centralized multi-users electronic energy meters.