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A smart energy meter capable of detecting switch state

A technology of smart electric energy meter and electric energy meter, which is applied in the field of intelligent electric energy meter

Active Publication Date: 2020-11-03
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is a lack of smart energy meters with this function

Method used

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  • A smart energy meter capable of detecting switch state

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The specific embodiment of the present invention is as figure 1 shown.

[0012] In this embodiment, a smart energy meter capable of detecting switch states includes a first switch K1, a first voltage sensor 1, a first current transformer CT1, a first resistor R1, a second switch K2, a second voltage sensor 2, a first Two current transformer CT2, second resistor R2, A / D converter, DSP, control unit and display unit.

[0013] The first switch K1 is connected in series with the phase line N, the two terminals of the input terminal of the first voltage sensor 1 are connected with the two terminals of the first switch K1, and the output terminal of the first voltage sensor 1 is connected with the input terminal of the A / D converter; One end of the primary winding of the first current transformer CT1 is connected to one end of the first switch K1, and one end of the primary winding of the first current transformer CT1 is connected to one terminal of the load; the secondary w...

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Abstract

An intelligent electric energy meter capable of detecting the switch state comprises a first switch, a first voltage sensor, a first current transformer, a first resistor, a second switch, a second voltage sensor, a second current transformer, a second resistor, an A / D converter, a DSP, a control unit and a display unit. According to the intelligent electric energy meter capable of detecting the switch state, the state of a built-in relay switch can be monitored in real time, the state of the relay switch can be automatically judged, faults of the built-in relay switch can be found in time, and therefore the fault relay switch can be maintained or replaced.

Description

technical field [0001] The invention relates to an intelligent electric energy meter capable of detecting switch states, belonging to the technical field of electric energy measurement. Background technique [0002] With the development of the smart grid, smart energy meters, as one of its important components, are widely used in the grid to measure and intelligently control the electric energy used by power users. A relay switch can be set inside or outside the electric energy meter. The electric energy meter collects and stores the electric energy consumed by the load carried by the electric energy user. If the electricity user fails to pay the electricity fee in time, the power grid can stop supplying power to the load used by the electricity user by controlling the shutdown of the relay switch; after the electricity user pays off the electricity fee, the power grid can be restored by controlling the closure of the relay switch Supply power to loads used by power consume...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R11/02G01R31/327
CPCG01R11/02G01R31/3278
Inventor 王琼朱亮梅贱生陈志文李婷
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST