Temperature compensation method for multifunctional electric energy meter

Abstract

A temperature compensation method for a multifunctional electric energy meter relates to a temperature compensation method for an electric energy information monitoring device, which overcomes the detects that temperature compensation is only performed on parts of the multifunctional electric energy meter in the prior art, solves the problem of the temperature compensation of the multifunctional electric energy meter in the right perspective and improves the precision of the electric energy meter. A temperature data acquiring circuit comprises a digital temperature measuring chip, a processor MCU and a peripheral auxiliary circuit. The temperature measuring chip transfers the acquired digital temperature data to the processor MCU through an I / O port according to the 1-Wire bus protocol, and the processor MCU carries out a pointed compensation to the power data of the multifunctional electric energy meter by a temperature compensation arithmetic. The invention can ensure the measuring precision of the multifunctional electric energy meter under the condition with terrible temperature condition and has the advantages of simple circuit design and comprehensive temperature compensation.

Description

technical field [0001] The invention relates to an electric energy information monitoring device, in particular to a temperature compensation method for a multifunctional electric energy meter. Background technique [0002] The accuracy of the energy meter is directly related to the vital interests of users, especially the key departments with large electricity consumption. The existing high-precision multi-function watt-hour meters, under harsh temperature conditions, especially in the cold weather in the north, the various functional blocks and even components that make up the watt-hour meter are affected by temperature changes. Measurement accuracy is affected to varying degrees. Patent 92203323.4 proposes the temperature compensation method of the NdFeB damping body of the transformer, which only compensates the temperature of the transformer, but does not propose a temperature compensation solution for other parts of the electric energy meter, which cannot guarantee th...

AI Technical Summary

Problems solved by technology

The existing high-precision multi-function watt-hour meters, under harsh temperature conditions, especially in the cold weather in the north, the various functional blocks and even components that make up the watt-hour meter are affected by temperature changes. Measurement accuracy has varying degrees of impact

Patent 92203323.4 proposes the temperature compensation method of the NdFeB damping body of the transformer, which only compensates the temperature of the transformer, but does not propose a temperature compensation solution for other parts of the electric energy meter, which cannot guarantee the overall measurement accuracy of the electric energy meter; The temperature compensation method of the sensitive resistor for the crystal oscillator only ensures the accuracy of the crystal oscillator, and does not consider the temperature compensation of other functional blocks such as signal acquisition, signal transmission, and calculation processing of the electric energy meter.

Therefore, none of the above methods can fully solve the influence of temperature changes on the measurement accuracy of the multi-function electric energy meter. In order to overcome the above problems and solve the temperature compensation problem of the multi-function electric energy meter from the overall perspective of the multi-function electric energy meter, the present invention provides a multi-function electric energy meter. The temperature compensation method of the functional electric energy meter, thereby improving the measurement accuracy of the multifunctional electric energy meter under the influence of temperature, and meeting the needs of users

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