User line checking device

A technology for user lines and users, which is applied in the direction of measuring devices, digital measurement technology for measurement, instruments, etc., can solve the problems of affecting the user's power consumption and low accuracy, and achieve the effect of accurate, fast and simple operation

Pending Publication Date: 2018-01-26
STATE GRID CORP OF CHINA +2
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  • Abstract
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Problems solved by technology

[0003] In view of this, the embodiment of the present invention provides a user line checking device to sol

Method used

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specific Embodiment approach

[0054] Further, see figure 2 , as a specific implementation manner, the characteristic signal generation unit 200 may include a power conversion module 201 , a single-chip microcomputer control module 202 , a photoelectric isolation protection module 203 and a current injection module 204 .

[0055] Specifically, the power conversion module 201 is connected to the single-chip control module 202 and is used to convert the user's alternating current into direct current and supply power to the single-chip control module 202 . The single-chip microcomputer control module 202 is connected with the photoelectric isolation protection module 203, and is used to control the current injection module 204 to generate a corresponding characteristic signal according to the trigger button. The photoelectric isolation protection module 203 is connected with the current injection module 204 and is used to complete the mutual isolation between the electrical signal output by the single-chip co...

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Abstract

The invention is suitable for the technical field of electric power detection and provides a user line checking device. The user line checking device comprises a feature signal generation unit, whichis connected with an alternating current of a user to be detected and is used for generating feature signals according to the alternating current, wherein the feature signal generation unit can trigger to generate a plurality of feature signals; a triggering unit, which comprises a plurality of trigger keys, wherein each trigger key triggers one of the feature signals correspondingly; and a signaldetection unit, which is connected with a live wire or a null wire connected with an electric energy meter of the user to be detected, and is used for detecting current waveform of the live wire or the null wire, and displaying a detection result when detecting that the current waveform has the feature signals. The user line checking device can check correspondence relation between users and lines without cutting off the power, and improves user line checking accuracy.

Description

technical field [0001] The invention belongs to the technical field of electric power detection, and in particular relates to a subscriber line checking device. Background technique [0002] With the promotion of smart grids, fault replacement and batch transformation of smart energy meters have become an important part of the work of power supply companies. It is necessary to determine the corresponding relationship between the electric meter and the user before the fault replacement and batch transformation of the electric meter. The prior art needs to judge the corresponding relationship between the electric meter and the user by pulling off the main switch of the user and observing the change of the electric meter. The above method has the following problems: (1) when other users around are also pulling off the main switch, the detection result It is easy to make mistakes and the accuracy is not high; (2) It affects the normal power consumption of users. Contents of t...

Claims

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Application Information

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IPC IPC(8): G01R19/25G01R1/28G01R35/04
Inventor 王子奇刘卫强吕杨州张康杨贤丁同同王建生
Owner STATE GRID CORP OF CHINA
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