Method for performing temperature compensation on metering chip and manganin sheet in electric meter
A metering chip and temperature compensation technology, applied in the direction of measuring electrical variables, measuring devices, measuring time integration, etc., can solve the problems that the accuracy of the meter is difficult to control, the resistance of the manganin sheet is affected by temperature, and the heating of the manganese copper is not perfect, etc., to achieve Effect of overcoming influence and effective control of meter accuracy
Inactive Publication Date: 2012-05-09
BEIJIG YUPONT ELECTRIC POWER TECH
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Problems solved by technology
The manganese-copper sheet completes the current sampling in the ammeter, and the resistance of the manganese-bronze sheet is seriously affected by temperature, which makes it difficult to control the accuracy of the ammeter during the temperature rise process
At present, there is no perfect treatment method for manganese-copper heating. Generally, the accuracy of the manganese-copper sheet itself is used to ensure the accuracy of the meter.
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[0017] An embodiment of the present invention provides a method for temperature compensation of a metering chip and a manganin sheet in an electric meter. In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0018] Through the heating experiment of the ammeter, it is concluded that the high contact resistance of the relay in the ammeter leads to a relatively large heat generation of the ammeter, which...
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The embodiment of the invention provides a method for performing temperature compensation on a metering chip and a manganin sheet in an electric meter. The method comprises the following steps of: determining temperature rise error delta of the metering chip according to a current temperature value of the metering chip; determining temperature rise error alpha of the manganin sheet according to a current effective value of the manganin sheet and a temperature rise error curve of the manganin sheet; converting the temperature rise error delta of the chip and the temperature rise error alpha of the manganin sheet into a temperature compensation value err of the electric meter; and performing the temperature compensation on output power of the electric meter by using the temperature compensation value err of the electric meter. In the method provided by the embodiment of the invention, the temperature rise error delta of the metering chip and the temperature rise error alpha of the manganin sheet are comprehensively considered, the output power of the electric meter can be dynamically adjusted under different temperature conditions, the influence caused to the accuracy of the electric meter by the temperature is overcome, and the accuracy of the electric meter in a temperature rise process is effectively controlled.
Description
technical field [0001] The invention relates to the technical field of electric energy measurement in data services, in particular to a method for performing temperature compensation on a metering chip and a manganin sheet in an electric meter. Background technique [0002] With the continuous advancement of the national smart grid, smart meters are gradually becoming popular, and higher requirements are placed on the measurement accuracy of the meters. The manganese-copper sheet completes the current sampling in the ammeter, and the resistance of the manganese-bronze sheet is seriously affected by temperature, which makes it difficult to control the accuracy of the ammeter during the temperature rise process. At present, there is no perfect treatment method for manganese-copper heating. Generally, the accuracy of the manganese-copper sheet itself is used to ensure the accuracy of the meter. Contents of the invention [0003] In order to solve the defects of the prior art...
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IPC IPC(8): G01R11/185
Inventor 李鹏
Owner BEIJIG YUPONT ELECTRIC POWER TECH
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