138 / 2019-01-25 14:56:13

The Whole-system Model of Smart Electricity Meter

smart electricity meter,whole-system model,dynamic load,dynamic error

全体主题 > Power and Energy Measurements

In order to analyze the error effect of smart electricity meter under different dynamic load current fluctuation and evaluate the errors of smart electricity meter. At first, the models of four units in smart electricity meter are established based on their mechanism, which include voltage channel model, current channel model with a programmable gain amplifier (PGA), active power measurement model and energy measurement model. Secondly, the whole-system model of smart electricity meter is established base on above four models to reflect the inside ralations causing dynamic errors. Finally, a dynamic error testing system is built to test the dynamic errors of the typical electricity meter, and the correctness of the whole-system model is verified by comparing the measured dynamic errors and simulation errors. The result shows that the whole-system model can be used to evaluate the errors affected by the complicated load current fluctuation.