Method for measuring electric quantity of electric energy meter

Abstract

The invention relates to a power metering method of an electric energy meter. By introducing a CRC check and a data backup mechanism, a backup area is set correspondingly for each main area divided into the power RAM area, and a backup area is also set for the main EEPROM area of ​​the EEPROM area. In the EEPROM area, data backup is realized to avoid the loss of the original energy data stored in the main area; after the energy meter is powered on, after the anti-fly away processing mechanism is executed for the read energy data, and the power failure of the energy meter is detected The CRC verification process is performed every time, so as to ensure that the power data before entering the next step is the normal power data that has passed the CRC verification, so as to ensure that the subsequent measured power is accurate; and for the power that has not passed the CRC verification The data introduces an error correction mechanism, that is, uses the power data in the backup area to update the power data in the corresponding main area to ensure that the power data in the main area is correct.

Description

technical field [0001] The invention relates to the field of electric energy meters, in particular to an electric quantity measuring method for the electric energy meter. Background technique [0002] With the continuous development of my country's power system and the continuous improvement of science and technology, the equipment used in the power grid system is becoming more and more advanced, and the power system is also developing towards intelligence and automation. During the operation of the power system, the reliable and accurate measurement of the electricity by the electric energy meter is an important work content for the power grid to ensure safe production and improve the quality of service. [0003] However, in the actual measurement work of the electric energy meter, the electric energy meter will have the problem of abnormal power measurement due to many factors. For example, the power RAM area is subject to abnormal coverage, tampering, or the entire syste...

AI Technical Summary

Problems solved by technology

[0003] However, in the actual measurement work of the electric energy meter, the electric energy meter will have the problem of abnormal power measurement due to many factors

For example, the power RAM area is subject to abnormal coverage, tampering, or the entire system of the energy meter is out of power, resulting in abnormal power values, but the power RAM area does not make timely control of these abnormal power values, resulting in inaccurate power measurement

Of course, the reading and writing process of the EEPROM area will also be affected by external interference such as overwriting and tampering, which will make the power value abnormal, resulting in inaccurate power measurement

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