Simulation method and system based on electric energy meter power-down data storage

Abstract

The invention provides a simulation method and system based on electric energy meter power-down data storage. The simulation method includes: according to preset capacitance capacity, preset load current and preset voltage amplitude, calculating power-down time, and generating simulation waveform; outputting the simulation waveform to an electric energy meter, and receiving and storing power-downdata fed back by the electric energy meter, wherein the power-down data are generated by the electric energy meter; judging whether the power-down data are complete or not; if not, increasing power-down time. By the simulation method and system, whether the power-down data stored by the electric energy meter are complete or not can be evaluated effectively.

Description

technical field [0001] The invention relates to the field of simulation, in particular to a simulation method and system based on power-off data storage of electric energy meters. Background technique [0002] The battery of the electric energy meter frequently fails, and the electric energy meter needs to store the power-off data after a power failure, which completely depends on the capacitance in the electric energy meter. However, the following problems may exist in the design of the electric energy meter: [0003] 1. Considering the low cost, the use of low-priced unknown capacitors cannot ensure enough time to store power-down data. [0004] 2. There is not enough margin. Because many electric energy meters use electrolytic capacitors, the error is 20%. The time for electricity to store data is greatly reduced. [0005] 3. The use of supercapacitors is derated. Some electric energy meters use supercapacitors in the design circuit. In order to make the life of the sup...

AI Technical Summary

Problems solved by technology

[0003] 1. Considering the low cost, the use of low-priced unknown capacitors cannot ensure enough time to store power-down data

[0004] 2. There is not enough margin. Because many electric energy meters use electrolytic capacitors, the error is 20%. The time for electricity to store data is greatly reduced

[0005] 3. The use of supercapacitors is derated. Some electric energy meters use supercapacitors in the design circuit. In order to make the life of the supercapacitors conform to the double 85 design, the method of reducing the voltage and reducing the charging current is carried out, which leads to the small charging current of the capacitor and the charging time is too long. Long time, failed to save enough power in a short time, the capacitor was powered off before it was fully charged, and there was not enough time to save data

[0007] The existing technology can only perform a simple power-on and power-on test, and cannot accurately simulate the charge and discharge control of the capacitor, nor can it simulate the program problem of the ammeter caused by the unexpected power failure during the operation of the FLASH.

Images