阅读说明：本技术 一种智能电能表检测装置 (A kind of intelligent electric energy meter detection device ) 是由 陈杰 于 2018-05-23 设计创作，主要内容包括：本发明公开了一种智能电能表检测装置,包括计算机、电表检定单元、直流源控制板、直流电流源、步进电机控制板、三坐标步进电机和电磁铁；通过计算机对直流电流源控制,调节励磁电流,实现磁场强度程控调节；控制三坐标系步进电机,实现电磁铁相对电能表位置的任意控制,满足标准要求。同时通过电表检定单元对被测电能表在磁场大小、位置和方向可程控调节的外部恒定磁场作用下,进行计量误差检测,并能自动判断试验结果。实现了智能电能表外部恒定磁场影响量试验的自动检测,全面检验不同磁场对电能表计量的影响,测试磁场强度准确性高、过程自动化、操作简便,提高了检测效率。(The invention discloses a kind of intelligent electric energy meter detection devices, including computer, ammeter calibrating unit, DC source control panel, DC current source, step motor control plate, three coordinate stepper motors and electromagnet；DC current source is controlled by computer, exciting current is adjusted, realizes the program-controlled adjusting of magnetic field strength；Three-coordinate stepper motor is controlled, realizes that electromagnet with respect to any control of electric energy meter position, meets standard requirements.Unit is examined and determine to tested electric energy meter under magnetic field size, the effect of the external constant magnetic field of the program-controlled adjusting of position and direction by ammeter simultaneously, progress measurement error detection, and test result can be judged automatically.Realize the automatic detection of intelligent electric energy meter external constant magnetic field influence amount test, influence measure to electric energy meter of complete examination different magnetic field tests magnetic field strength accuracy height, process automation, easy to operate, improves detection efficiency.)

1. a kind of intelligent electric energy meter detection device, which is characterized in that including computer, ammeter calibrating unit, DC source control panel, DC current source, step motor control plate, three coordinate stepper motors and electromagnet；The computer respectively with DC source control panel It is connected with step motor control plate, DC source control panel connects electromagnet by DC current source；Step motor control plate passes through Three coordinate stepper motors connect electromagnet；Computer is connect with ammeter calibrating unit, and ammeter examines and determine unit and tested electric energy meter connects It connects.

2. a kind of intelligent electric energy meter detection device according to claim 1, which is characterized in that the electromagnet generates constant Magnetic fields realize the relatively tested electric energy meter position of electromagnet in tested electric energy meter, by three coordinate stepper motor SERVO CONTROLs Any control.

3. a kind of intelligent electric energy meter detection device according to claim 1, which is characterized in that the computer is by encouraging The setting of magnetoelectricity stream and to three coordinate positions control, program-controlled adjusting magnetic field strength, the position and direction in magnetic field.

Technical field

The present invention relates to power equipment the field of test technology, and in particular to a kind of intelligent electric energy meter detection device.

Background technique

External constant magnetic field has larger impact to electric energy meter metering performance, main to influence ammeter internal electric source module, electric current Mutual inductor, sampling unit cause accurately to measure.The many illegal users of discovered in recent years interfere electric energy expression by strong magnet To stealing purpose, current transformer inside magnet and ammeter close to when so that the power measurement values of ammeter change.For Guarantee the safe and reliable of intelligent electric energy meter operation and accurately measure, need to carry out external constant magnetic field to electric energy meter influences test.

Standard GB/T/T17215.321-2008 regulation: DC electromagnet acquisition can be used in stationary magnetic field, and magnetic field should be made All accessible surfaces for the instrument installed when for by normal use, magnetic potential value should be 1000At (ampere-turn).Guo Wang enterprise Standard Q/GDW1364-2013 single-phase intelligent electric energy meter technical specification, Q/GDW1827-2013- three-phase intelligent electric-energy meter technology rule Model respectively dictates the anti-external constant magnetic field ability of single three-phase intelligent table: single-phase electric energy meter passes to reference voltage, reference The permanent magnet that 50mm × 50mm × 50mm Surface field intensity is 200mT is individually positioned in electric energy meter front, side by electric current Close to the position of power module, each flat test continues 20min for face, bottom surface, and electric energy meter should not crash, not blank screen.By magnetic field Electric energy meter front, side, bottom surface are individually positioned in close to the position of metering sampling unit, is missed in Ib, the metering that power factor is 1 Poor knots modification should be no more than 1.0%.Three-phase kilowatt-hour meter is the magnetic for the use of 50mm × 50mm × 50mm Surface field intensity being 300mT Iron is not to be exceeded 2.0% in Ib (In), the measurement error knots modification that power factor is 1.

Traditional experimental rig is inconvenient for operation, accuracy is low.Currently, the intelligent electric energy meter inspection not met the requirements of the standard The external constant magnetic field generating device of survey.Existing apparatus, which is primarily present, to be had the disadvantage that: 1, be unable to satisfy standard GB/T/ The external constant magnetic field that T17215.321-2008 is required is applied to all accessible surfaces of tested table；2, test process does not have It realizes automatic operation, not can avoid the injury to operator；3, the position of external magnetic field, size and Orientation are not adjustable, The influence that different magnetic field can not be examined to measure electric energy meter.

Summary of the invention

In order to overcome the shortcomings of the prior art, the present invention provides a kind of intelligent electric energy meter detection devices.

The present invention is achieved through the following technical solutions:

A kind of intelligent electric energy meter detection device, including computer, ammeter examine and determine unit, DC source control panel, DC current Source, step motor control plate, three coordinate stepper motors and electromagnet；The computer is electric with DC source control panel and stepping respectively Machine control panel is connected, and DC source control panel connects electromagnet by DC current source；Step motor control plate is walked by three coordinates Electromagnet is connected into motor；Computer is connect with ammeter calibrating unit, and ammeter calibrating unit is connect with tested electric energy meter.

Preferably, the electromagnet generates stationary magnetic field and acts on tested electric energy meter, passes through three coordinate stepper motor servos Any control of the relatively tested electric energy meter position of electromagnet is realized in control.

Preferably, the computer is controlled by the setting to exciting current and to three coordinate positions, program-controlled adjusting magnetic field Intensity, the position and direction in magnetic field.

The present invention has the advantage that and the utility model has the advantages that

The present invention controls DC current source by computer, adjusts exciting current, realizes the program-controlled adjusting of magnetic field strength；Control Three-coordinate stepper motor processed realizes that electromagnet with respect to any control of electric energy meter position, meets standard requirements.Pass through electricity simultaneously Table examines and determine unit to tested electric energy meter under magnetic field size, the effect of the external constant magnetic field of the program-controlled adjusting of position and direction, into The detection of row measurement error, and test result can be judged automatically.Realize the test of intelligent electric energy meter external constant magnetic field influence amount Automatic detection, the influence that complete examination different magnetic field measure electric energy meter, test magnetic field strength accuracy height, process automation, It is easy to operate, improve detection efficiency.

Detailed description of the invention

Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:

Fig. 1 is the device of the invention structure principle chart.

Specific embodiment

To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made For limitation of the invention.

As shown in Figure 1, the detection device of the present embodiment uses separate structure, including ammeter testing stand and two, console Point.Ammeter testing stand includes DC source control panel, DC current source, step motor control plate, three-coordinate stepper motor and electricity Magnet；Console includes computer and ammeter calibrating unit.

Computer in console is connected with the DC source control panel in electric energy meter testing stand, and the access of DC source control panel is straight Current source is flowed, the setting of exciting current is realized in control DC current source output；DC current source uses the constant current of Serial regulation electric current Source, Switching Power Supply power supply are realized DC current constant-current source by linear regulation circuit, are put using differential operational amplifier AD629 Big feedback signal, anti-interference ability is good, and stability is high, and export DC current: 0-5A is adjustable, is arranged by computer program-control and is controlled System.Simultaneous computer connects the step motor control plate in electric energy meter testing stand, and step motor control plate accesses three-coordinate step Into in motor, three coordinate electromagnet position displacements are controlled, using the linear modular structure form of Three-coordinate type, pass through servo control It makes and any control of the electromagnet with respect to electric energy meter position can be achieved；DC current source output terminal accesses electromagnet, and electromagnet generates Stationary magnetic field acts on tested electric energy meter, and computer is controlled by the setting to exciting current and to three coordinate positions, program-controlled tune Save magnetic field strength, the position and direction in magnetic field.Tested electric energy meter provides voltage and current, quilt by the ammeter calibrating unit in console It surveys the electrical energy pulse that electric energy meter generates to be input in ammeter calibrating unit, ammeter examines and determine unit and uses portable threephase switch power amplifier Calibrating power supply, including error calculation provides the routine calibrating to tested electric energy meter.Computer and ammeter examine and determine the two-way friendship of unit It connects, parameter setting, Error processing etc. is carried out to ammeter calibrating unit, to judge influence knot of the stationary magnetic field to electric energy meter Fruit.