CN103983936B - A kind of single three-phase electric energy meter integration calibration equipment - Google Patents
A kind of single three-phase electric energy meter integration calibration equipment Download PDFInfo
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- CN103983936B CN103983936B CN201410232912.1A CN201410232912A CN103983936B CN 103983936 B CN103983936 B CN 103983936B CN 201410232912 A CN201410232912 A CN 201410232912A CN 103983936 B CN103983936 B CN 103983936B
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- 230000010354 integration Effects 0.000 title claims abstract description 17
- 238000005259 measurement Methods 0.000 claims abstract description 26
- 238000012360 testing method Methods 0.000 claims abstract description 23
- 238000012795 verification Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention discloses a kind of single three-phase electric energy meter integration calibration equipment, comprise one-chip computer module, and the current measurement circuit be connected with one-chip computer module respectively, voltage measurement circuit, display module, it is characterized in that, described voltage measurement circuit comprises voltage type power amplifier, the output terminal of described voltage type power amplifier is connected with handover module, described handover module is connected with single-phase step-up transformer with three-phase voltage increasing transformer respectively, described three-phase voltage increasing transformer is connected with voltage type power amplifier respectively by handover module with the tickler of single-phase step-up transformer, described three-phase voltage increasing transformer output terminal is provided with the three-phase many taps interface can testing three-phase electric energy meter, described single-phase step-up transformer output terminal is provided with the single-phase multi-tap interface can testing single-phase electric energy meter.Not only adapt to the verification of single-phase electric energy meter but also adapt to the verification demand of three-phase electric energy meter.
Description
Technical field
The present invention relates to a kind of single three-phase electric energy meter integration calibration equipment.
Background technology
Electric energy meter checking device is specially electric system field test electrical network measurement meter kinematic error and fault detect and design.Operating personnel can be rapid by electric energy meter checking device, safe and reliable the measurement meter error recorded and wiring error, for measurement of power personnel correctly measure, remedy electricity and provide effective foundation.Electric energy meter checking device specifically comprises current measurement circuit, voltage measurement circuit, one-chip computer module and display module, drastically increases the convenience of use.
But the electric energy meter checking device of existing design can only verify a kind of electric energy meter of form, namely single-phase electric energy meter calibration equipment can only verify single-phase electric energy meter, and three-phase electric energy meter calibration equipment can only verify three-phase electric energy meter.When needing to verify multi-form electric energy meter, different calibration equipments must be used to test.Adopt two kinds of calibration equipments, not only take up room, affect efficiency, but also add the investment of equipment, use dumb, versatility is low.
Summary of the invention
For the problems referred to above, the invention provides a kind of single three-phase electric energy meter integration calibration equipment, for single-phase electric energy meter or three-phase electric energy meter switch test module, not only can adapt to the verification of single-phase electric energy meter but also adapt to the verification demand of three-phase electric energy meter.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
A kind of single three-phase electric energy meter integration calibration equipment, comprise one-chip computer module, and the current measurement circuit be connected with one-chip computer module respectively, voltage measurement circuit, display module, it is characterized in that, described voltage measurement circuit comprises voltage type power amplifier, the output terminal of described voltage type power amplifier is connected with handover module, described handover module is connected with single-phase step-up transformer with three-phase voltage increasing transformer respectively, described three-phase voltage increasing transformer is connected with voltage type power amplifier respectively by handover module with the tickler of single-phase step-up transformer, described three-phase voltage increasing transformer output terminal is provided with the three-phase many taps interface can testing three-phase electric energy meter, described single-phase step-up transformer output terminal is provided with the single-phase multi-tap interface can testing single-phase electric energy meter.
In single three-phase electric energy meter integration calibration equipment, a single-phase multichannel stepup transformer and a three-phase voltage increasing device are set, the mode that relay switches can be adopted, use two kinds of stepup transformers respectively, thus reach switching of single-phase and three-phase is carried out to the voltage output loop of device.Both can check single-phase electric energy meter, can three-phase electric energy meter be checked again, improve the utilization factor of equipment, decrease the installing space of verifying attachment, save a large amount of man power and materials.Effectively can improve the service efficiency of equipment, reduce production cost.Electric energy measurement center test laboratory can be widely used in.
Further, described current measurement circuit comprises Current-mode Power Amplifier, described Current-mode Power Amplifier is connected with current lifting device, described current lifting device output terminal is provided with the current lifting device tickler be connected with Current-mode Power Amplifier, and described current lifting device output interface is for connecting electric energy meter to be tested.Both can check single-phase electric energy meter, can three-phase electric energy meter be checked again, and automatically switched and complete test event.
The invention has the beneficial effects as follows: can for single-phase electric energy meter or three-phase electric energy meter switch test module, not only adapt to the verification of single-phase electric energy meter but also adapt to the verification demand of three-phase electric energy meter, improve the utilization factor of equipment, electric energy measurement center test laboratory can be widely used in.
Accompanying drawing explanation
Fig. 1 is the voltage measurement circuit schematic diagram of a kind of single three-phase electric energy meter integration calibration equipment of the present invention;
Fig. 2 is the current measurement circuit schematic diagram of a kind of single three-phase electric energy meter integration calibration equipment of the present invention;
The mark implication of accompanying drawing is as follows:
1: voltage type power amplifier; 2: handover module; 3: three-phase voltage increasing transformer; 4: three-phase many taps interface; 5: single-phase multi-tap interface; 6: single-phase step-up transformer; 7: Current-mode Power Amplifier; 8: current lifting device; 9: current lifting device tickler; 10: electric energy meter to be measured; JI-J4: relay.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, technical solution of the present invention is described in further detail, can better understand the present invention to make those skilled in the art and can be implemented, but illustrated embodiment is not as a limitation of the invention.
A kind of single three-phase electric energy meter integration calibration equipment, comprise one-chip computer module, and the current measurement circuit, voltage measurement circuit, the display module that are connected with one-chip computer module respectively, wherein one-chip computer module and display module are all prior aries, do not repeat them here.Because current measurement circuit and voltage measurement circuit do not have versatility, traditional electric energy meter checking device can only verify a kind of electric energy meter of form, namely single-phase electric energy meter calibration equipment can only verify single-phase electric energy meter, and three-phase electric energy meter calibration equipment can only verify three-phase electric energy meter.When needing to verify multi-form electric energy meter, different calibration equipments must be used to test.
The one list three-phase electric energy meter integration calibration equipment that the application provides, not only adapts to the verification of single-phase electric energy meter but also adapts to the verification demand of three-phase electric energy meter.Wherein voltage measurement circuit as shown in Figure 1: voltage measurement circuit comprises voltage type power amplifier 1, handover module 2, three-phase voltage increasing transformer 3, single-phase step-up transformer 6, the tickler of three-phase voltage increasing transformer 3 and the tickler of single-phase step-up transformer 6.The output terminal of described voltage type power amplifier 1 is connected with handover module 2, described handover module 2 is connected with single-phase step-up transformer 6 with three-phase voltage increasing transformer 3 respectively, and described three-phase voltage increasing transformer 3 is connected with voltage type power amplifier 1 respectively by handover module 2 with the tickler of single-phase step-up transformer 6.
As shown in Figure 1, handover module 2 is for switching single-phase test pattern and three-phase test pattern, and preferred handover module 2 comprises four relay J 1, J2, J3 and J4.Such as, relay J 1 is connected with three-phase voltage increasing transformer 3 with the normally closed contact of relay J 2, relay J 1 is connected with single-phase step-up transformer 6 with the normally opened contact of relay J 2, can select three-phase voltage increasing transformer 3 or single-phase step-up transformer 6 by switching J1 and J2.Same, relay J 3 is connected with the tickler of three-phase voltage increasing transformer 3 with the normally closed contact of relay J 4, relay J 3 is connected with the tickler of single-phase step-up transformer 6 with the normally opened contact of relay J 4, can select the tickler of three-phase voltage increasing transformer 3 or single-phase step-up transformer 6 by switching J3 and J4.
Described three-phase voltage increasing transformer 3 output terminal is provided with the three-phase many taps interface 4 can testing three-phase electric energy meter, and described single-phase step-up transformer 6 output terminal is provided with the single-phase multi-tap interface 5 can testing single-phase electric energy meter.Wherein, the test voltage that three-phase electric energy meter is conventional has 57.7V, 100V, 220V, 380V tetra-kind, therefore preferred triple-phase many taps interface 4 respectively corresponding output voltage be: 57.7V, 100V, 220V, 380V, during test, be switched on relevant voltage gear according to the voltage specification of three-phase electric energy meter, use more flexible, convenient.Single-phase multi-tap interface 5 also can be arranged to voltage gear U1, U2 of commonly using ... UN.
On the input coil that the output signal of voltage type power amplifier 1 and feedback signal are connected to three-phase voltage increasing transformer 3 and single-phase step-up transformer 6 by handover module 2 and tickler.According to different electric energy meters to be measured 10 during use, can automatically switch between single-phase voltage loop and three-phase voltage loop, meet single-phase and test request that is three-phase electric energy meter.
Further, current measurement circuit as shown in Figure 2, comprise Current-mode Power Amplifier 7, described Current-mode Power Amplifier 7 is connected with current lifting device 8, described current lifting device 8 output terminal is provided with the current lifting device tickler 9 that is connected with Current-mode Power Amplifier 7 (for the ease of distinguishing with the tickler in voltage measurement circuit, tickler in Fig. 2 is ordered as current lifting device tickler 9), described current lifting device 8 output interface is for connecting electric energy meter to be tested.Namely the output of Current-mode Power Amplifier 7 is connected on the up-flow coil of current lifting device 8, and output current is added on electric energy meter 10 to be measured, for electric energy meter test provides testing current standard.And electric current output accuracy is sampled by the tickler of current lifting device 8, send into Current-mode Power Amplifier 7 and carry out closed loop guarantee.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in the technical field that other are relevant, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. a single three-phase electric energy meter integration calibration equipment, comprise one-chip computer module, and the current measurement circuit be connected with one-chip computer module respectively, voltage measurement circuit, display module, it is characterized in that, described voltage measurement circuit comprises voltage type power amplifier, the output terminal of described voltage type power amplifier is connected with handover module, described handover module is connected with single-phase step-up transformer with three-phase voltage increasing transformer respectively, described three-phase voltage increasing transformer is connected with voltage type power amplifier respectively by handover module with the tickler of single-phase step-up transformer, described three-phase voltage increasing transformer output terminal is provided with three-phase many taps interface of test three-phase electric energy meter, described single-phase step-up transformer output terminal is provided with the single-phase multi-tap interface of test single-phase electric energy meter.
2. one according to claim 1 single three-phase electric energy meter integration calibration equipment, it is characterized in that, described current measurement circuit comprises Current-mode Power Amplifier, described Current-mode Power Amplifier is connected with current lifting device, described current lifting device output terminal is provided with the current lifting device tickler be connected with Current-mode Power Amplifier, and described current lifting device output interface is for connecting electric energy meter to be tested.
3. one according to claim 1 single three-phase electric energy meter integration calibration equipment, it is characterized in that, described handover module comprises four relay J 1, J2, J3 and J4.
4. one according to claim 3 single three-phase electric energy meter integration calibration equipment, it is characterized in that, described relay J 1 is connected with three-phase voltage increasing transformer with the normally closed contact of relay J 2, and relay J 1 is connected with single-phase step-up transformer with the normally opened contact of relay J 2.
5. one according to claim 4 single three-phase electric energy meter integration calibration equipment, it is characterized in that, described relay J 3 is connected with the tickler of three-phase voltage increasing transformer with the normally closed contact of relay J 4, and relay J 3 is connected with the tickler of single-phase step-up transformer with the normally opened contact of relay J 4.
6. one according to claim 5 single three-phase electric energy meter integration calibration equipment, it is characterized in that, described three-phase many taps interface respectively corresponding output voltage is: 57.7V, 100V, 220V, 380V.
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| CN201410232912.1A CN103983936B (en) | 2014-05-29 | 2014-05-29 | A kind of single three-phase electric energy meter integration calibration equipment |
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| CN201410232912.1A CN103983936B (en) | 2014-05-29 | 2014-05-29 | A kind of single three-phase electric energy meter integration calibration equipment |
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| CN103983936B true CN103983936B (en) | 2016-04-20 |
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| CN113238182B (en) * | 2021-04-12 | 2023-07-25 | 国网河南省电力公司鹤壁供电公司 | On-spot electric energy meter load calibration equipment that uses |
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