CN220820904U - Simulation experiment device for anti-electricity-stealing teaching - Google Patents
Simulation experiment device for anti-electricity-stealing teaching Download PDFInfo
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- CN220820904U CN220820904U CN202322101866.9U CN202322101866U CN220820904U CN 220820904 U CN220820904 U CN 220820904U CN 202322101866 U CN202322101866 U CN 202322101866U CN 220820904 U CN220820904 U CN 220820904U
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- 238000004088 simulation Methods 0.000 title claims abstract description 38
- 230000009466 transformation Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 21
- 238000012549 training Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 241000234295 Musa Species 0.000 description 6
- 235000018290 Musa x paradisiaca Nutrition 0.000 description 6
- 238000005070 sampling Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a simulation experiment device for anti-electricity-stealing teaching, which comprises: the device comprises a power supply, a metering device, a current transformer and a load; the current transformer is connected with the metering device, the wire inlet end and the wire outlet end of the metering device are connected through a first switch, and the closing of the first switch is used for shorting the metering device; the current transformer is connected with a power supply and a load, the inlet end of the power supply connection side of the current transformer is connected with the outlet end of the load connection side of the current transformer through a second switch, the second switch is closed and used for short-circuiting the current transformer and the metering device, and one set of device can demonstrate the principle and effect of various electricity larceny and improve the efficiency of anti-electricity larceny training.
Description
Technical Field
The utility model relates to the technical field related to electrical equipment, in particular to a simulation experiment device for anti-electricity-stealing teaching.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
At present, the on-site electricity larceny checking and dealing actions are mostly reserved only by the experience and knowledge of staff, but the anti-electricity larceny teaching equipment is not popularized in a large quantity.
The teaching experiment for preventing electricity larceny also has the following four defects: firstly, the related teaching equipment is expensive, which is not beneficial to large-scale popularization; secondly, the related teaching equipment has huge volume, and a plurality of inconveniences exist in the teaching use process; thirdly, related equipment is too complex, the installation process is long, and specialized personnel are required to debug the equipment; fourth, the expansibility of the related equipment is poor, the related equipment does not have a modularized function, the related complicated and changeable electricity stealing mode can not be updated timely and effectively, and the updating price is high.
Disclosure of utility model
In order to solve the problems, the utility model provides a simulation experiment device for anti-electricity-theft teaching, one set of device can demonstrate various principles and effects of electricity theft, and the efficiency of the anti-electricity-theft training is improved.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
In a first aspect, the present utility model provides a simulation experiment apparatus for anti-electricity-theft teaching, including: the device comprises a power supply, a metering device, a current transformer and a load;
The current transformer is connected with the metering device, the wire inlet end and the wire outlet end of the metering device are connected through a first switch, and the closing of the first switch is used for shorting the metering device;
The current transformer is connected with a power supply and a load, a wire inlet end at the connection side of the current transformer and the power supply and a wire outlet end at the connection side of the current transformer and the load are connected through a second switch, and the closing of the second switch is used for short-circuiting the current transformer and the metering device.
As an alternative implementation mode, one end of the power supply is connected with the incoming line end of the current transformer, the other end of the power supply is connected with the zero line end of the metering device, the zero line end of the metering device is connected with the load, and the outgoing line end of the current transformer is connected with the load.
As an alternative implementation mode, the inlet wire end of the metering device is connected with the current outlet wire end of the current transformer, the outlet wire end of the metering device is connected with the current inlet wire end of the current transformer, and the voltage wire end of the metering device is connected with the inlet wire end of the current transformer.
As an alternative implementation manner, the first switch and the second switch adopt a socket and a plug with a wire, and after the plug is plugged into the socket, the switches are closed and conducted.
As an alternative embodiment, the current transformer adopts a transformation ratio of 1: 1.
As an alternative implementation manner, the primary side and the secondary side of the current transformer are respectively connected in series with an open-close type current transformer for signal acquisition, and the open-close type current transformer adopts a transformation ratio of 1000:1, and an open-close type current transformer.
As an alternative implementation manner, after the first switch is closed and the second switch is opened, the incoming line end and the outgoing line end of the metering device are directly connected, so that the metering device is in short circuit.
As an alternative embodiment, after the second switch is closed and the first switch is opened, the current transformer is directly connected with the inlet wire end of the power supply connection side and the outlet wire end of the load connection side, so that the current transformer and the metering device are short-circuited.
As an alternative embodiment, the simulation experiment device for the anti-electricity-theft teaching further comprises a voltage regulator, wherein the voltage regulator is connected with the current transformer in series and is arranged between the current transformer and the power supply.
As an alternative embodiment, the voltage regulator is configured to change the multiplying power of the current transformer after the first switch and the second switch are opened.
As an alternative implementation mode, the simulation experiment device for the anti-electricity-theft teaching further comprises a speed-adjustable direct current motor connected to the load side, wherein the direct current motor is used for conducting electricity-theft simulation of different electricity-theft amounts through speed adjustment of the direct current motor after the first switch and the second switch are disconnected.
Compared with the prior art, the utility model has the beneficial effects that:
The utility model provides a simulation experiment device for anti-electricity-theft teaching, which is characterized in that a first switch is arranged between an inlet end and an outlet end of a metering device so as to short-circuit the metering device through the first switch, thereby simulating an electricity-theft mode of a meter tail short-circuit method; a second switch is arranged between the inlet end and the outlet end of the current transformer so as to short-circuit the current transformer and the metering device through the second switch, thereby the model cannot be used for electricity stealing in a meter-free mode; the method comprises the steps of connecting a direct current motor with adjustable speed to a load side, and carrying out electricity larceny simulation of different electricity larceny amounts through speed adjustment and gear selection of the direct current motor; the device is flexible, the line current is small, and the safety is higher than that of the traditional vertical electricity stealing simulation cabinet; the device has the advantages of multiple simulation of one set of device, and the device has the advantages of easily available, easily detachable, portable and economical materials, and can improve the efficiency and the teaching quality of anti-electricity-stealing training.
Additional aspects of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
Fig. 1 is a schematic diagram of a simulation experiment device for anti-electricity-theft teaching provided in embodiment 1 of the present utility model;
Fig. 2 is a schematic diagram of a simulation experiment device for anti-electricity-theft teaching including a voltage regulator according to embodiment 1 of the present utility model;
wherein, 1, the wire inlet end of the metering device, 2, the voltage wire end, 3, the wire outlet end of the metering device, 4, the metering device, 5, the current transformer, S1, the current wire outlet end, S2, the current wire inlet end, P1, the inlet end of the current transformer, P2, the outlet end of the current transformer, 6, a load, 7, a first switch, 8, a second switch, 9, a voltage regulator, 10 and a zero line end.
Detailed Description
The utility model is further described below with reference to the drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, unless the context clearly indicates otherwise, the singular forms also are intended to include the plural forms, and furthermore, it is to be understood that the terms "comprises" and "comprising" and any variations thereof are intended to cover non-exclusive inclusions, such as, for example, processes, methods, systems, products or devices that comprise a series of steps or units, are not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or inherent to such processes, methods, products or devices.
Embodiments of the utility model and features of the embodiments may be combined with each other without conflict.
Example 1
As shown in fig. 1, this embodiment provides a simulation experiment device for anti-electricity-theft teaching, including: a power supply, a metering device 4, a current transformer 5 and a load 6;
The current transformer 5 is connected with the metering device 4, the inlet end and the outlet end of the metering device 4 are connected through a first switch 7, and the closing of the first switch 7 is used for shorting the metering device 4;
The current transformer 5 is connected with a power supply and a load 6, a wire inlet end at the side of connecting the current transformer 5 with the power supply and a wire outlet end at the side of connecting the current transformer 5 with the load are connected through a second switch 8, and the closing of the second switch 8 is used for short-circuiting the current transformer 5 and the metering device 4.
In this embodiment, one end of the power supply is connected to the wire inlet end P1 of the current transformer, the other end of the power supply is connected to the zero wire end 10 of the metering device 4, the zero wire end 10 of the metering device 4 is connected to the load 6, and the wire outlet end P2 of the current transformer is connected to the load 6.
Alternatively, the power supply may use 220V.
Alternatively, the simulation of the power supply may be achieved by connecting one phase of the power grid bus with one phase of the hot wire of the bus through the power switch.
As an alternative implementation manner, the power switch may be an air switch, and an isolation switch at the front end of the analog metering device may be used to duplicate the incoming line of the main power line and the user side.
In this embodiment, the wire inlet end 1 of the metering device is connected to the current outlet end S1 of the current transformer, the wire outlet end 3 of the metering device is connected to the current inlet end S2 of the current transformer, the voltage wire end 2 of the metering device is connected to the wire inlet end P1 of the current transformer, and the wire inlet end and the wire outlet end of the metering device 4 are both used for passing current and are current wires.
As an alternative embodiment, the metering device 4 adopts a three-phase four-wire electric energy meter;
Further, the three-phase four-wire electric energy meter has various types, and can be DTZY545 type electric energy meters.
In this embodiment, the first switch 7 and the second switch 8 adopt a socket and a plug with a wire, and after the plug is plugged into the socket, the switches are closed and turned on.
It can be understood that the first switch 7 and the second switch 8 can be banana sockets and banana plugs with wires, and after the banana plugs are plugged into the banana sockets, the switches are closed and conducted;
alternatively, the first switch 7 and the second switch 8 may be other types of switches, not limited to banana sockets and banana plugs, as long as the same function is achieved.
As an alternative implementation manner, the load 6 is, for example, a light bulb, a multi-gear warmer, etc., and is mainly used for simulating the electricity consumption situation of the user, and is not limited in particular.
In this embodiment, the current transformer 5 adopts a transformation ratio of 1:1, and the current transformer is simulated to reproduce a current line and a voltage line connected to the metering device 4 under the condition of using 220V single-phase electricity.
It can be understood that the type of the current transformer 5 is not limited as long as the transformation ratio is 1:1, so that the high voltage metering device with the current transformer can be simulated when the ordinary 220V household power consumption is used, the customization can be carried out according to actual conditions, and detailed description is omitted.
In this embodiment, the primary side and the secondary side of the current transformer may be connected in series with an open-close type current transformer for signal acquisition, and the output end of the secondary side of the open-close type current transformer is connected to a sampling resistor.
As an alternative embodiment, the switching current transformer adopts two transformation ratios of 1000:1, the use of the open-close type current transformer has the characteristics of convenient installation and accurate measurement, the collection part can be freely selected according to the needs during teaching, the lead is put into the open-close type current transformer after being opened, the current can be detected after being closed, and the teaching is simpler and more convenient when the safety is improved.
As an alternative implementation mode, the sampling resistor adopts a 100 omega sampling resistor, and the sampling resistor is respectively connected to the secondary output ends of the two open-close type current transformers to collect current data, so that the current data is input more accurately while the signal collection is safer by using small current and small voltage, and errors and distortion are reduced to the greatest extent.
In this embodiment, the simulation experiment device for anti-electricity-theft teaching further includes a voltage regulator 9, as shown in fig. 2, the voltage regulator 9 is connected in series with the current transformer 5, and is disposed between the current transformer 5 and the power supply;
the multiplying power of the current transformer 5 is simulated and changed through the voltage regulator 9 to influence the accuracy of the metering device 4, so that electricity stealing simulation for changing the multiplying power of the current transformer is performed.
As an alternative implementation mode, the power switch is closed, the first switch 7 and the second switch 8 are opened, and the multiplying power of the current transformer 5 is changed through rotating the knob on the voltage regulator 9 in a simulation mode, so that the ratio of the current on the first side and the current on the second side of the current transformer is greatly different from the rated transformation ratio.
In this embodiment, the following describes in detail different electricity stealing simulations in combination with the above-described device.
(1) Electricity theft simulation of the tail short-cut method:
the power switch and the first switch are closed, the second switch is opened, the inlet end and the outlet end of the metering device are directly connected to short-circuit the metering device, load current is split to cause short circuit of a current coil, the purpose of enabling the metering device to slowly rotate or even not rotate is achieved, current flowing through the metering device is reduced, and then a certain gap exists between the reading of the metering device and the actual current.
(2) Electricity theft simulation without meter method:
Closing the power switch and the second switch, opening the first switch, and directly connecting the current transformer with the inlet wire end of the power connection side and the outlet wire end of the load connection side;
Namely, the live wire and the zero wire of the power supply at the inlet end of the current transformer are directly connected with the live wire and the zero wire of the load so as to bypass the metering device;
The whole metering device is in short circuit, the metering device cannot work normally after being in short circuit, and the current is close to zero; the load is not short-circuited and still can work normally, so that the purpose of electricity stealing is achieved.
(3) Electricity theft simulation of changing current transformer multiplying power:
And the power switch is closed, the first switch and the second switch are opened, and the multiplying power of the current transformer is simulated and changed by rotating a knob on the voltage regulator so as to influence the accuracy of the metering device.
In this embodiment, in addition to the above several kinds of electricity stealing simulations, direct current electricity stealing simulation is also involved, specifically:
Closing a power switch, opening the first switch and the second switch, connecting a 220V speed-adjustable direct current motor with a rectifying module at the load side, and carrying out direct current injection electricity larceny simulation of different electric larceny amounts through speed adjustment and gear selection of the direct current motor;
In this case, the current actually used by the load has a larger difference from the reading in the metering device, the current waveform is close to half wave, the harmonic content in the current is abnormal, and an abnormal direct current component exists.
The speed regulation and gear selection of the direct current motor can be manually operated, and if the direct current motor is rotated quickly, more direct current components are indicated, and larger electricity stealing quantity is indicated.
While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.
Claims (10)
1. The utility model provides a simulation experiment device of anti-electricity-theft teaching which characterized in that includes: the device comprises a power supply, a metering device, a current transformer and a load;
The current transformer is connected with the metering device, the wire inlet end and the wire outlet end of the metering device are connected through a first switch, and the closing of the first switch is used for shorting the metering device;
The current transformer is connected with a power supply and a load, a wire inlet end at the connection side of the current transformer and the power supply and a wire outlet end at the connection side of the current transformer and the load are connected through a second switch, and the closing of the second switch is used for short-circuiting the current transformer and the metering device.
2. A simulation experiment apparatus for anti-electricity-theft teaching according to claim 1, wherein,
One end of the power supply is connected with the wire inlet end of the current transformer, the other end of the power supply is connected with the zero wire end of the metering device, the zero wire end of the metering device is connected with the load, and the wire outlet end of the current transformer is connected with the load;
The wire inlet end of the metering device is connected with the current wire outlet end of the current transformer, the wire outlet end of the metering device is connected with the current wire inlet end of the current transformer, and the voltage wire end of the metering device is connected with the wire inlet end of the current transformer.
3. The simulation experiment device for anti-electricity-theft teaching according to claim 1, wherein the first switch and the second switch adopt a socket and a plug with a wire, and the switch is closed and conducted after the plug is plugged into the socket.
4. The simulation experiment device for anti-electricity-theft teaching of claim 1, wherein the current transformer adopts a transformation ratio of 1: 1.
5. The simulation experiment device for anti-electricity-theft teaching of claim 1, wherein the primary side and the secondary side of the current transformer are respectively connected in series with an open-close type current transformer for signal acquisition, and the open-close type current transformer adopts a transformation ratio of 1000:1, and an open-close type current transformer.
6. The simulation experiment device for anti-electricity-theft teaching according to claim 1, wherein after the first switch is closed and the second switch is opened, the incoming line end and the outgoing line end of the metering device are directly connected, so that the metering device is short-circuited.
7. A simulation experiment apparatus for anti-electricity-theft teaching according to claim 1, wherein after the second switch is closed and the first switch is opened, the current transformer is directly connected with the inlet terminal of the power connection side and the outlet terminal of the load connection side, thereby short-circuiting the current transformer and the metering device.
8. The simulation experiment device for anti-electricity-theft teaching according to claim 1, further comprising a voltage regulator connected in series with the current transformer and arranged between the current transformer and the power supply.
9. The simulation experiment apparatus for anti-electricity-theft teaching according to claim 8, wherein the voltage regulator is configured to change the multiplying power of the current transformer after the first switch and the second switch are turned off.
10. The simulation experiment device for anti-electricity-theft teaching according to claim 1, further comprising a speed-adjustable direct current motor connected to the load side, wherein the direct current motor is used for conducting electricity-theft simulation of different electricity-theft amounts through speed adjustment of the direct current motor after the first switch and the second switch are disconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322101866.9U CN220820904U (en) | 2023-08-04 | 2023-08-04 | Simulation experiment device for anti-electricity-stealing teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322101866.9U CN220820904U (en) | 2023-08-04 | 2023-08-04 | Simulation experiment device for anti-electricity-stealing teaching |
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| Publication Number | Publication Date |
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| CN220820904U true CN220820904U (en) | 2024-04-19 |
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| CN202322101866.9U Active CN220820904U (en) | 2023-08-04 | 2023-08-04 | Simulation experiment device for anti-electricity-stealing teaching |
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| CN (1) | CN220820904U (en) |
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2023
- 2023-08-04 CN CN202322101866.9U patent/CN220820904U/en active Active
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