A metering method for electric energy meter anti-stealing

Abstract

The invention provides a metering method for anti-stealing electric energy meters, comprising the following steps: S1, the electric energy meter starts to run; S2, judges whether the preset electricity stealing condition is satisfied, that is, the magnetic field strength of the electric energy meter is greater than 150m'T; if satisfied , then enter S3; if not satisfied, return to S1; S3, whether the preset selection compensation mode is automatically activated, if activated, then enter S4; if not, then enter S6; S4, use the compensation measurement formula P=U*I max Calculate the pulse output, and record the voltage and current parameters, enter S5; S5, exit the compensation mode, use the normal measurement formula P=U*I to calculate the pulse output, enter S7; S6, record the time to meet the preset electricity stealing conditions segment start time T 3 and end time T 4 , record T 3 ~T 4 Instantaneous maximum value of current within I max , voltage value U; S7, end. The present invention is provided with a compensation mode, which can automatically calculate the power loss of the electric energy meter during the electricity theft time period, or record various parameters of the electric energy meter during the electricity theft time period, so as to facilitate subsequent recovery.

Description

technical field [0001] The invention relates to the technical field of electric energy meters, in particular to a metering method for electric energy meters to prevent electricity theft. Background technique [0002] With the improvement of electric energy meter technology, power bureaus and users have higher and higher requirements for the quality and reliability of electric energy meters, but there are still some users who use certain technical means to interfere with electric energy meters, for example, on electric energy meters Magnets are installed to generate a strong magnetic field, which affects the normal measurement of the electric energy meter and steals electricity, so as to achieve the purpose of paying less electricity bills for individuals, which makes the power bureau face great losses. like figure 1 As shown, most of the current energy meters use the combination of manganese copper and current transformers for sampling and measurement. Under external interf...

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Problems solved by technology

[0002] With the improvement of electric energy meter technology, power bureaus and users have higher and higher requirements for the quality and reliability of electric energy meters, but there are still some users who use certain technical means to interfere with electric energy meters, for example, on electric energy meters Install magnets to generate a strong magnetic field, which affects the normal measurement of the electric energy meter and implements the act of stealing electricity, so as to achieve the purpose of paying less electricity bills for individuals, which makes the power bureau face great losses

like figure 1 As shown, most of the current energy meters use the combination of manganese copper and current transformers for sampling and measurement. Under external interference such as strong magnetism, the current transformers are easily affected by the magnetic field due to their own characteristics, which will lead to changes in pulse output. , so that the electric energy meter measures less electricity, and the existing electric energy meter cannot record various parameters of the electric energy meter during the period of strong magnetic interference, so the subsequent electric power bureau cannot recover, so the existence of a strong magnetic field will greatly affect the electric power bureau At the same time, this kind of stealing behavior is also unfair to normal users, which may cause some users to follow suit, thus forming a vicious circle. Therefore, it is necessary to improve the measurement method of the existing electric energy meter

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