Calibration method for automatically compensating electric energy metering error of electric energy meter according to temperature
An automatic compensation and electric energy measurement technology, applied in the measurement of electric variables, measuring devices, instruments, etc., can solve the problems of deviation of electric energy consumption data, affecting the fairness of electric energy measurement, and the accuracy of electric energy measurement being greatly affected by changes in ambient temperature, etc. To achieve the effect of improving fairness and small deviation
Active Publication Date: 2015-10-07
HANGZHOU XILI INTELLIGENT TECH CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem that the electric energy measurement accuracy of the existing electric energy meter is greatly affected by the change of the ambient temperature, which leads to the occurrence of the obtained electric energy metering data and the user's actual electric energy consumption when the electric energy meter is used in an environment with large temperature changes There is a large deviation in the electric energy consumption data, which affects the fairness of electric energy measurement. Provide a new calibration value of the power overflow correction register that can be calculated in time according to the ambient temperature to replace the original power in the power overflow correction register in the electric energy metering chip. The calibration value of
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[0047] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0048] Embodiment, according to the calibration method of automatically compensating the electric energy measurement error of the electric energy meter according to the temperature, see figure 1 shown. Including a calibration device; the calibration device includes: a temperature detection sensor S11, a memory S12, a current signal sampling circuit S14, a voltage signal sampling circuit S15, a microprocessor S9 with a timer S10 inside and a power overflow correction register inside The electric energy metering chip S7 of S8, wherein the electric energy metering chip, the temperature detection sensor and the memory are respectively connected to the microprocessor, and the current signal sampling circuit and the voltage signal sampling circuit are respectively connected to the electric energy metering chip;
[0049] The calibration method compatible with...
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The invention discloses a calibration method for automatically compensating an electric energy metering error of an electric energy meter according to temperature. The calibration method may timely compute a new power gain correcting register calibration value according to environment temperature and replaces an original power gain correcting register calibration value in a power gain correcting register so as to enable a low difference between the actual electric energy consumption of a user and the electric energy metering of the electric energy meter. A calibration device and a calibration method adaptive to the same are included. The calibration device comprises a temperature detecting sensor, a memory, a current signal sampling circuit, a voltage signal sampling circuit, a microprocessor, and an electric energy metering chip with a built-in power gain correcting register. The electric energy metering chip, the temperature detecting sensor, and the memory are connected with the microprocessor. The current signal sampling circuit and the voltage signal sampling circuit are connected with the electric energy metering chip. The calibration method is mainly used in electric energy meter automatic compensation calibration technology according to temperature variation.
Description
technical field [0001] The invention relates to the technical field of electric energy measurement error compensation of electric energy meters, in particular to a calibration method for automatically compensating electric energy measurement errors of electric energy meters according to temperature. Background technique [0002] An electric energy meter is an instrument used to measure electric energy consumption in a circuit. In the production of electric energy meters, the accuracy of electric energy measurement of electric energy meters is calibrated and inspected according to the normal temperature working environment with reference temperature of 20°C when the electric energy meters leave the factory, and the electric energy measurement accuracy of electric energy meters is related to the ambient temperature. Due to the influence of temperature changes in the actual use environment, the accuracy of electric energy measurement of the electric energy meter will have a rel...
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Inventor 朱永丰周小蕾杨兴马骥沈学良
Owner HANGZHOU XILI INTELLIGENT TECH CO LTD
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