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Electric control system and method applied to automatic meter verification table of electric energy meter

A technology of automatic inspection and electric energy meter, applied in the field of meter inspection table, can solve the problems of operator trouble, low efficiency, wrong access method, etc., and achieve the effect of improving service life

Active Publication Date: 2013-07-31
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there is no automatic switching module, it will bring a lot of trouble to the operator, and the efficiency is also low. Moreover, it may cause wrong connection due to the use of electric energy meters with different connection methods on the assembly line or the error of the PC software operator. into the way to cause overcurrent or short circuit

Method used

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  • Electric control system and method applied to automatic meter verification table of electric energy meter

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Embodiment Construction

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] like figure 1 The electric control system shown in the electric energy meter automatic meter inspection platform includes a PC 1, a micro control unit 2, a control module 3 and a verification station 4. The control unit 3 includes a main relay 31, a switching relay 32, a main relay pull-in / off acceleration circuit 33, a switching relay control circuit 34, a bistable trigger circuit 35, a filter sampling circuit 36, an isolation conversion circuit 37 and a state feedback circuit 38.

[0017] The PC 1 is connected with the micro control unit 2 . The micro control unit 2 is provided with a main relay control signal input terminal, a switching relay control signal input terminal and a feedback signal terminal.

[0018] The external power input terminal 5 is set on the total relay 31 and the filter sampling circuit 36; the output...

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Abstract

The invention discloses an electric control system and an electric control method which are applied to an automatic meter verification table of an electric energy meter. The electric control system comprises a PC (Personal Computer) machine, a micro control unit, a control module and a verification station, wherein the PC machine controls the work of the control module through the micro control unit; the verification station is connected to the control module; the control module is provided with an external power input end; the control module comprises a master relay, a switching relay, a master relay operating / break accelerating circuit, a switching relay control circuit, a flip and flop generator, a filtering sampling circuit and an isolation switching circuit. The electric control system and the electric control method can automatically switch an electric energy meter with different access modes and has an overcurrent protection function, thereby prolonging the service life of the meter verification table.

Description

technical field [0001] The invention relates to a meter inspection platform for an electric energy meter, in particular to an electric control system and an electric control method on the meter inspection platform. Background technique [0002] In the power system, all kinds of electric energy meters need to check their electric energy measurement errors before they are connected to the network, and the electric energy meters with qualified electric energy errors are allowed to be connected to the network. Due to the large amount of electric energy meters used, in order to calibrate more electric energy meters at one time and improve the work efficiency of the metering department, a special electric energy meter inspection table is currently used. In this kind of meter inspection station, it is mainly to test the electric energy meters with two different connection methods of "directly connected electric energy meter" and "transformer connected electric energy meter". Meter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H11/00H02H3/08G01R35/04
Inventor 刘宁生
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO