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Method for judging false wiring of three-phase three-wire electric energy meter

A three-phase three-wire, wrong wiring technology, applied in the direction of measuring electrical variables, instruments, measuring devices, etc., can solve problems such as complex algorithms, large amount of data calculation, and inability to quickly give test results

Active Publication Date: 2014-11-19
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0002] At present, the existing electric energy meter on-site calibrator can judge the wrong wiring of the electric energy meter, the algorithm is complex, the amount of data calculation is large, and the test result cannot be quickly given.

Method used

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  • Method for judging false wiring of three-phase three-wire electric energy meter
  • Method for judging false wiring of three-phase three-wire electric energy meter
  • Method for judging false wiring of three-phase three-wire electric energy meter

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Embodiment Construction

[0028] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0029] refer to Figure 8 As shown, a method for judging wrong wiring of a three-phase three-wire electric energy meter of the present invention comprises the following steps:

[0030] Step 1: Measure the parameters of the first element and the second element in the three-phase two-element electric energy meter, and the voltage of the first element is called Call the voltage of the second element as Define the first phase current as Define the second phase current as here appears as an unknown to be confirmed.

[0031] Step 2: Draw the hexagonal phasor diagram of the voltage phasor motherboard of the three-phase three-wire metering device. Preferably, this step includes:

[0032] Step 2a: Connect the A, B, and C three-phase phase voltages of the three-phase three-wire metering device to the three-phase three-wire electric ener...

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Abstract

The invention discloses a method for judging false wiring of a three-phase three-wire electric energy meter. The method is characterized in that the method comprises the following steps that (1) parameters of a first component and parameters of a second component in the three-phase two-component electric energy meter are obtained; (2) a voltage vector mother board hexagon vector diagram of a three-phase three-wire metering device is drawn; (3) a two-phase current vector diagram of the three-phase three-wire metering device is drawn; (4) a four-wire vector diagram is drawn; (5) the four-wire vector diagram is compared with the voltage vector mother board hexagonal vector diagram and the two-phase current vector diagram in order to obtain correct wiring judgment. According to the method, false wiring of the three-phase three-wire electric energy meter can be quickly judged so that a judgment result can be provided. Meanwhile, field workers can use the method to conduct manual, quick and effective wiring interpretation. The method can be widely applied to algorithms for judging false wiring of field calibration instruments of electric energy metering devices.

Description

technical field [0001] The invention relates to a method for judging wrong wiring of a three-phase three-wire electric energy meter, in particular to a method for checking the wiring of the electric energy meter of a three-phase three-wire electric energy meter and quickly judging wrong wiring. Background technique [0002] At present, the existing electric energy meter on-site calibrator can judge the misconnection of the electric energy meter, the algorithm is complex, the amount of data calculation is large, and the test result cannot be quickly given. Contents of the invention [0003] In order to solve the deficiencies of the prior art, the object of the present invention is to provide a method for judging wrong wiring of a three-phase three-wire electric energy meter. [0004] In order to achieve the above object, the present invention adopts the following technical solutions: [0005] A method for judging wrong wiring of a three-phase three-wire electric energy met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/04
Inventor 陈霄黄奇峰范洁周玉陈刚易永仙蔡奇新金在冬季欣荣
Owner STATE GRID CORP OF CHINA
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