Design of a New Three-Phase Multi-rate Watt-Hour Meter Based on AT89S52

In order to adjust electric power burthen with reason and save energy, we put forward the design of a novel multi-rate three-phase watt-hour meter aiming at the phenomena of bigger demand of electric power and unbalanced electricity in different time. The design principle of a novel multi-rate three-phase watt-hour meter based on AT89S52 is proposed in this paper. The designs of hardware and software flow, as well as the analysis of experiment data are presented in detail. By trial manufacturing in Zibo Billion Electron Limited Company, it demonstrates that this multi-rate three-phase watt-hour meter has the characteristics which are accurate measurement, walking precision, flexible time period setting, automatic meter reading and low cost. Therefore, this novel multi-rate watt-hour meter has a broad application prospect.