Method for calculating pulse constant of standard electric energy meter in testing process
A standard electric energy meter and pulse constant technology, applied in the direction of measuring electric variables, measuring devices, instruments, etc., can solve the problem that the electric energy meter under inspection cannot be detected, and achieve the effect of reducing time
Inactive Publication Date: 2018-01-19
ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +2
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[0002] At present, in the detection process of the standard electric energy meter and the electric energy meter verification device at this stage, the standard meter method is usually used for detection, that is, the comparison between the high-level standard electric energy meter and the electric energy meter to be inspected, which requires the knowledge of the standard electric energy meter to be inspected. The pulse constant of the electric energy meter, although the pulse constant is described in detail in the instruction manual, but in the verification process, due to various reasons, many times the electric energy meter submitted for inspection will have no instruction manual at hand, and there is no information on the nameplate of the meter. If the pulse constant is marked, it will cause the electric energy meter under test to fail to detect
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[0019] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.
[0020] A method for calculating the pulse constant of a standard electric energy meter in a test process, the following steps are performed:
[0021] When testing a standard electric energy meter or an electric energy meter verification device, the standard meter method is usually used, that is, a high-level standard electric energy meter is compared with the tested meter, and the pulse constant C of the checked meter is input. b , set n pulses to generate an error, and the relative error γ is automatically calculated by the error counter;
[0022] The error γ of the electric energy meter is expressed by relative error, therefore, γ=(W b -W n ) / W n ; where: γ—the relative error of the watt-hour meter to be tested, W b —The electric energ...
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The invention discloses a method for calculating a pulse constant of a standard electric energy meter in a testing process, and the method comprises the steps: estimating a pulse constant Cx under thecondition that a pulse constant of a tested meter is unknown, setting that n pulses causes one error, wherein there is one relative error gamma*x corresponding to the error; expressing the error gamma*x of the electric energy meter through the relative error, wherein the pulse constant of the standard electric energy meter is Cb=Cx*(1+gamma*x). According to the invention, the method achieves theestimation of the pulse constant of the tested electric energy meter, achieves the detection of the tested meter according to the estimated pules constant through the standard electric energy meter method, and achieves the calculation of the correct pulse constant of the standard electric energy meter through the test error generated in a testing process. In the detection process of the standard electric energy meter, the method reduces the time in searching a specification through the correct calculation of the pulse constant, and guarantees the quick and smooth execution detection of the electric energy meter.
Description
technical field [0001] The invention belongs to the technical field of electric energy measurement, in particular to a method for calculating the pulse constant of a standard electric energy meter in the testing process. Background technique [0002] At present, in the detection process of the standard electric energy meter and the electric energy meter verification device at this stage, the standard meter method is usually used for detection, that is, the comparison between the high-level standard electric energy meter and the electric energy meter to be inspected, which requires the knowledge of the standard electric energy meter to be inspected. The pulse constant of the electric energy meter, although the pulse constant is described in detail in the instruction manual, but in the verification process, due to various reasons, many times the electric energy meter submitted for inspection will have no instruction manual at hand, and there is no information on the nameplate o...
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IPC IPC(8): G01R35/04
Inventor 刘洋洋顾强邹琪李常春李磊
Owner ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO