CN203950029U - The integrated calibration equipment of a kind of novel single three-phase electric energy meter - Google Patents

The integrated calibration equipment of a kind of novel single three-phase electric energy meter Download PDF

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Publication number
CN203950029U
CN203950029U CN201420281000.9U CN201420281000U CN203950029U CN 203950029 U CN203950029 U CN 203950029U CN 201420281000 U CN201420281000 U CN 201420281000U CN 203950029 U CN203950029 U CN 203950029U
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China
Prior art keywords
phase
electric energy
energy meter
transformer
voltage
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CN201420281000.9U
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纪峰
周超
鲍进
田正其
穆小星
丁戌子
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State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
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State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
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Abstract

The utility model discloses the integrated calibration equipment of a kind of novel single three-phase electric energy meter, comprise one-chip computer module, and the current measurement circuit being 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, the tickler of described three-phase voltage increasing transformer and single-phase step-up transformer is connected with voltage type power amplifier by handover module respectively, described three-phase voltage increasing transformer output terminal is provided with many taps of the three-phase interface that can test three-phase electric energy meter, described single-phase step-up transformer output terminal is provided with the single-phase multi-tap interface that can test single-phase electric energy meter.Not only adapt to the verification of single-phase electric energy meter but also adapted to the verification demand of three-phase electric energy meter.

Description

The integrated calibration equipment of a kind of novel single three-phase electric energy meter
Technical field
The utility model relates to the integrated calibration equipment of a kind of novel single three-phase electric energy meter.
Background technology
Electric energy meter checking device is specially for electric system field test electrical network measurement meter kinematic error and fault detect design.Operating personnel can, by electric energy meter checking device rapid, safe and reliable the measurement meter error and the wiring error that record, provide effective foundation for measurement of power personnel correctly measure, remedy electric weight.Electric energy meter checking device specifically comprises current measurement circuit, voltage measurement circuit, one-chip computer module and display module, has greatly improved the convenience using.
But the electric energy meter checking device of existing design can only a kind of form of verification electric energy meter, single-phase electric energy meter calibration equipment can only verification single-phase electric energy meter, three-phase electric energy meter calibration equipment can only verification three-phase electric energy meter.In the time needing the multi-form electric energy meter of verification, must use different calibration equipments to test.Adopt two kinds of calibration equipments, not only take up room, affect efficiency, but also increased the investment of equipment, use dumbly, versatility is low.
Utility model content
For the problems referred to above, the utility model provides a kind of novel single three-phase electric energy meter integrated calibration equipment, can be for single-phase electric energy meter or three-phase electric energy meter switch test module, and not only adapt to the verification of single-phase electric energy meter but also adapted to the verification demand of three-phase electric energy meter.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the utility model is achieved through the following technical solutions:
The integrated calibration equipment of a kind of novel single three-phase electric energy meter, comprise one-chip computer module, and the current measurement circuit being 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, the tickler of described three-phase voltage increasing transformer and single-phase step-up transformer is connected with voltage type power amplifier by handover module respectively, described three-phase voltage increasing transformer output terminal is provided with many taps of the three-phase interface that can test three-phase electric energy meter, described single-phase step-up transformer output terminal is provided with the single-phase multi-tap interface that can test single-phase electric energy meter.
A single-phase multichannel stepup transformer and a three-phase voltage increasing device are set in the integrated calibration equipment of single three-phase electric energy meter, can adopt the mode of relay switch, use respectively two kinds of stepup transformers, thereby reach, switching of single-phase and three-phase carried out in the Voltage-output loop of device.Both can check single-phase electric energy meter, can check again three-phase electric energy meter, improve the utilization factor of equipment, reduce the installing space of verifying attachment, save a large amount of man power and materials.The service efficiency that can effectively improve equipment, reduces production costs.Can be widely used in electric energy measurement center test laboratory.
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 being connected with Current-mode Power Amplifier, and described current lifting device output interface is used for connecting electric energy meter to be tested.Both can check single-phase electric energy meter, can check again three-phase electric energy meter, and automatically switched and complete test event.
The beneficial effects of the utility model are: can be 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 adapted to the verification demand of three-phase electric energy meter, improve the utilization factor of equipment, can be widely used in electric energy measurement center test laboratory.
Brief description of the drawings
Fig. 1 is the voltage measurement circuit schematic diagram of the integrated calibration equipment of a kind of novel single three-phase electric energy meter of the utility model;
Fig. 2 is the current measurement circuit schematic diagram of the integrated calibration equipment of a kind of novel single three-phase electric energy meter of the utility model;
The mark implication of accompanying drawing is as follows:
1: voltage type power amplifier; 2: handover module; 3: three-phase voltage increasing transformer; 4: many taps of three-phase 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 solutions of the utility model are described in further detail, so that those skilled in the art can better understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
The integrated calibration equipment of a kind of novel single three-phase electric energy meter, 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 a kind of form of verification electric energy meter, be that single-phase electric energy meter calibration equipment can only verification single-phase electric energy meter, three-phase electric energy meter calibration equipment can only verification three-phase electric energy meter.In the time needing the multi-form electric energy meter of verification, must use different calibration equipments to test.
The integrated calibration equipment of the novel single three-phase electric energy meter of one that the application provides, had not only adapted to the verification of single-phase electric energy meter but also had adapted to the verification demand of three-phase electric energy meter.Wherein voltage measurement circuit as shown in Figure 1: voltage measurement circuit comprises the tickler of voltage type power amplifier 1, handover module 2, three-phase voltage increasing transformer 3, single-phase step-up transformer 6, 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 the tickler of described three-phase voltage increasing transformer 3 and single-phase step-up transformer 6 is connected with voltage type power amplifier 1 by handover module 2 respectively.
As shown in Figure 1, handover module 2 is for switching single-phase test pattern and three-phase test pattern, and preferably handover module 2 comprises four relay J 1, J2, J3 and J4.Such as, the normally closed contact of relay J 1 and relay J 2 is connected with three-phase voltage increasing transformer 3, the normally opened contact of relay J 1 and relay J 2 is connected with single-phase step-up transformer 6, can select three-phase voltage increasing transformer 3 or single-phase step-up transformer 6 by switching J1 and J2.Same, the normally closed contact of relay J 3 and relay J 4 is connected with the tickler of three-phase voltage increasing transformer 3, the normally opened contact of relay J 3 and relay J 4 is connected with the tickler of single-phase step-up transformer 6, 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 terminals are provided with many taps of the three-phase interface 4 that can test three-phase electric energy meter, and described single-phase step-up transformer 6 output terminals are provided with the single-phase multi-tap interface 5 that can test single-phase electric energy meter.Wherein, the test voltage that three-phase electric energy meter is conventional has 57.7V, 100V, 220V, 380V tetra-kinds, therefore many taps of preferred triple-phase interface 4 respectively corresponding output voltage be: 57.7V, 100V, 220V, 380V, when 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 conventional voltage gear U1, U2 ... UN.
The output signal of voltage type power amplifier 1 and feedback signal are connected on the input coil and tickler of three-phase voltage increasing transformer 3 and single-phase step-up transformer 6 by handover module 2.When use, according to different electric energy meters to be measured 10, can between single-phase voltage loop and three-phase voltage loop, automatically switch, meet single-phase and test request 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 terminals be provided with the current lifting device tickler 9(that is connected with Current-mode Power Amplifier 7 for the ease of with voltage measurement circuit in tickler difference, be current lifting device tickler 9 by the tickler life in Fig. 2), described current lifting device 8 output interfaces are used for connecting electric energy meter to be tested.The output that is 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 by the tickler sampling of current lifting device 8, sends into Current-mode Power Amplifier 7 and carry out closed loop guarantee.
These are only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model instructions and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims (6)

1. the integrated calibration equipment of novel single three-phase electric energy meter, comprise one-chip computer module, and the current measurement circuit being 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, the tickler of described three-phase voltage increasing transformer and single-phase step-up transformer is connected with voltage type power amplifier by handover module respectively, described three-phase voltage increasing transformer output terminal is provided with many taps of the three-phase interface that can test three-phase electric energy meter, described single-phase step-up transformer output terminal is provided with the single-phase multi-tap interface that can test single-phase electric energy meter.
2. the integrated calibration equipment of the novel single three-phase electric energy meter of one according to claim 1, 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 being connected with Current-mode Power Amplifier, and described current lifting device output interface is used for connecting electric energy meter to be tested.
3. the integrated calibration equipment of the novel single three-phase electric energy meter of one according to claim 1, is characterized in that, described handover module comprises four relay J 1, J2, J3 and J4.
4. the integrated calibration equipment of the novel single three-phase electric energy meter of one according to claim 3, it is characterized in that, the normally closed contact of described relay J 1 and relay J 2 is connected with three-phase voltage increasing transformer, and the normally opened contact of relay J 1 and relay J 2 is connected with single-phase step-up transformer.
5. the integrated calibration equipment of the novel single three-phase electric energy meter of one according to claim 4, it is characterized in that, the normally closed contact of described relay J 3 and relay J 4 is connected with the tickler of three-phase voltage increasing transformer, and relay J 3 is connected with the normally opened contact of relay J 4 and the tickler of single-phase step-up transformer.
6. the integrated calibration equipment of the novel single three-phase electric energy meter of one according to claim 5, is characterized in that, described many taps of three-phase interface respectively corresponding output voltage is: 57.7V, 100V, 220V, 380V.
CN201420281000.9U 2014-05-29 2014-05-29 The integrated calibration equipment of a kind of novel single three-phase electric energy meter Active CN203950029U (en)

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Application Number Priority Date Filing Date Title
CN201420281000.9U CN203950029U (en) 2014-05-29 2014-05-29 The integrated calibration equipment of a kind of novel single three-phase electric energy meter

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CN203950029U true CN203950029U (en) 2014-11-19

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103983936A (en) * 2014-05-29 2014-08-13 国家电网公司 Novel single-three-phase electric energy meter integrated verifying unit
CN105301553A (en) * 2015-12-01 2016-02-03 国家电网公司 Multipurpose single/three-phase electric energy meter detector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103983936A (en) * 2014-05-29 2014-08-13 国家电网公司 Novel single-three-phase electric energy meter integrated verifying unit
CN103983936B (en) * 2014-05-29 2016-04-20 国家电网公司 A kind of single three-phase electric energy meter integration calibration equipment
CN105301553A (en) * 2015-12-01 2016-02-03 国家电网公司 Multipurpose single/three-phase electric energy meter detector

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