Rapid detection method for starting and shunt running of intelligent electric energy meter

Abstract

The invention provides a rapid detection method for starting and shunt running of an intelligent electric energy meter. The method comprises the following steps: 1, a preset starting current Ix and apreset time threshold value A are preset; 2, according to nominal parameters of the electric energy meter, calculating a theoretical starting time limit tQ for starting test detection of the electricenergy meter and a theoretical shunt running time limit delta t for shunt running test detection; 3, after the starting test detection or the shunt running test detection is started, the preset starting current Ix is applied in the front A*tQ or A*delta t of the theoretical starting time limit tQ or the theoretical shunt running time limit delta t of the shunt running test detection, and a theoretical starting current IQ is applied in the back (1-A)*Tx or (1-A)*delta t of the theoretical starting time limit tQ or the theoretical shunt running time limit delta t of the shunt running test detection; and 4, after the theoretical starting time limit tQ or the theoretical shunt running time limit delta t is ended, according to the change of an actual pulse of the electric energy meter, and in combination with starting test detection standards or shunt running test detection standards, a detection result of a starting test or a shunt running test is judged.

Description

technical field [0001] The invention relates to the field of intelligent electric energy meter detection, in particular to a quick detection method for the start and creep of the intelligent electric energy meter. Background technique [0002] It takes a long time for the existing smart energy meters of different grades to perform the start-up test and creep test of the energy meter according to the requirements of the State Grid, and it often takes tens of minutes to complete. Starting current I applied during starting test and creep test Q Requirements are as follows: [0003] 【Starting current IQ】 [0004] According to the national metrology verification regulations JJG 596-2012, the starting current I Q As shown in Table 1: [0005] [0006] 【Starting test detection】 [0007] Add reference voltage U to the voltage line n and power factor Under the conditions, the current of the current line rises to the starting current I specified in Table 1 Q After that, th...

AI Technical Summary

Problems solved by technology

[0021] At present, domestic electric energy meter manufacturers and electric energy meter verification departments often need to spend a long time in the assessment of the two indicators of electric energy meter starting test and creep test, and enterprises that produce electric energy meter verification devices have no such Too much research is only done step by step according to the requirements of the State Grid, which greatly reduces the production efficiency of relevant departments

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