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

A technology of a smart electric energy meter and a detection method, which is applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of reducing production efficiency and not having too much research.

Inactive Publication Date: 2019-04-09
ZHENGZHOU WONDER ELECTRICAL POWER
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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

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

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Embodiment Construction

[0033] The technical solutions of the present invention will be described in further detail below through specific implementation methods.

[0034] The invention provides a quick detection method for start-up and creep of an intelligent electric energy meter, comprising the following steps:

[0035] Step 1, pre-set the preset starting current I x And the preset time threshold A, the preset time threshold A is to apply the preset starting current I during the starting test inspection or creep test inspection x The time accounts for the percentage of the starting test detection cycle or the sneak test detection cycle, preferably, the preset time threshold is 80%;

[0036] The calculation process of the preset start-up current is: the preset electric energy meter at the set time T x Output a pulse signal within, preferably, the set time T x for 1min, according to the set time T x Calculate the preset starting current I that the energy meter needs to apply x :

[0037]

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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...

Claims

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Application Information

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IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 马朝辉李建新王雅宾黄晓飞王晓飞贺东升
Owner ZHENGZHOU WONDER ELECTRICAL POWER
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