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Method and system for testing error self-detection function of electric energy meter

A test method and self-testing technology, which is applied in the direction of information technology support system, measuring device, measuring electric variables, etc., can solve the problem that the self-testing function of the electric energy meter measurement error cannot be automatically tested, and achieve the effect of automatic testing

Active Publication Date: 2020-07-14
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology

[0005] This application provides a test method and system for the error self-detection function of the electric energy meter, so as to solve the problem that the electric energy meter measurement error self-detection function cannot be automatically tested

Method used

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  • Method and system for testing error self-detection function of electric energy meter
  • Method and system for testing error self-detection function of electric energy meter
  • Method and system for testing error self-detection function of electric energy meter

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Embodiment Construction

[0042] The embodiments will be described in detail hereinafter, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples do not represent all implementations consistent with this application. These are merely examples of systems and methods consistent with aspects of the present application as recited in the claims.

[0043] Such as figure 1 As shown, it is a flow chart of a test method for an electric energy meter error self-detection function, and the method includes the following steps:

[0044] S1: the main controller sets the control signal, and sends the control signal to the waveform generation module and the signal amplification module.

[0045] The master controller is the command controller that plays the main role in a given time ...

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Abstract

The invention provides a method and a system for testing an error self-detection function of an electric energy meter. A main controller sets a control signal; the control signal is sent to a waveformgeneration module and a signal amplification module; the waveform generation module generates a basic electric wave signal in response to the control signal; the basic electric wave signal is sent toa signal superposition module; the signal amplification module extracts a self-detection signal of the electric energy meter; the amplitude of the self-detection signal of the electric energy meter is amplified or reduced in response to the control signal, an adjusting signal is generated, and the adjusting signal is sent to the signal superposition module; the signal superposition module receives the basic electric wave signal and the adjusting signal, superposes the basic electric wave signal and the adjusting signal to generate a sampling signal, and inputs the sampling signal into the electric energy meter for error self-detection function test. And after a theoretical result value and a self-detection result value are obtained, the difference between the two values is compared with apreset difference range, so that the automatic test of the error self-detection function of the electric energy meter is realized.

Description

technical field [0001] The application relates to the technical field of testing the error self-detection function of an electric energy meter, in particular to a test method and system for the error self-detection function of an electric energy meter. Background technique [0002] The error self-detection function of the electric energy meter is a self-inspection function provided by the smart electric energy meter by setting the self-test chip. The ADC (Analog-to-Digital Converter) samples, extracts the self-detection signal, and performs calculations based on the amplitude and phase of the self-detection signal. [0003] In practical applications, there is no system and method for automatic detection of whether the error self-detection function of the electric energy meter is operating normally. Usually, it is necessary to modify the circuit of the electric energy meter. By artificially modifying the connection circuit, the test is carried out in a series-parallel manner...

Claims

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Application Information

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IPC IPC(8): G01R35/04
CPCG01R35/04Y04S20/30
Inventor 陈叶韩彤刘光界王恩廖耀华程富勇李博
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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