CN111308409A - Training device for wiring teaching - Google Patents
Training device for wiring teaching Download PDFInfo
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- CN111308409A CN111308409A CN201911067339.2A CN201911067339A CN111308409A CN 111308409 A CN111308409 A CN 111308409A CN 201911067339 A CN201911067339 A CN 201911067339A CN 111308409 A CN111308409 A CN 111308409A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
Abstract
The application discloses a training set for wiring teaching includes: the metering cabinet comprises a front door arranged on the front side and a rear door arranged on the back side; the front door is provided with an observation window; the front side of the metering cabinet is provided with an electric energy meter tail and a combined junction box; the back of the metering cabinet is provided with a voltage bus and a mutual inductor; the tail of the electric energy meter, the joint junction box, the voltage bus and the mutual inductor are all provided with pluggable interfaces; the meter tail is detachably connected with the signal sampling points corresponding to the serial numbers; two ends of the mutual inductor are respectively connected with two adjacent signal source points; the voltage bus bars are respectively connected with different signal source points. This application is through setting up pluggable socket for at the teaching in-process, the student can in time correct after carrying out wrong line, improves student's learning efficiency, and through the observation window, can see the internal connection, makes the student when carrying out wrong line, can understand the reason of wiring mistake and where, further promotes student's learning effect.
Description
Technical Field
The application belongs to the technical field of electric energy metering, and particularly relates to a training device for wiring teaching.
Background
The safe, reliable and accurate operation of electric energy metering must be guaranteed through the instrument and meter of electricity parameter such as measuring voltage, electric current, power factor, frequency. Therefore, accurate acquisition of parameters and wiring correctness in the electric energy metering work are important. All of these tasks require electrical energy meters to perform, so the expertise of the electrical energy meters is important.
At present, most of the work of detection and verification of electric energy metering is to perform analysis around an electric energy metering device, such as detection of a voltage transformer (TV or PT), a current transformer (TA or CT), an electric energy meter (active or reactive electric energy meter), and the like. However, no matter which type of electric energy metering device is selected for detection, the wiring in the metering device is ensured to be correct, and if the wiring is incorrect, the metering device which is accurate cannot meter correctly.
The currently used meter-installing and power-connecting training device can only carry out wiring operation, and whether wiring is correct or not is judged by a trained person or a student self-check, but the student often does not have a trained person in the process of self-training, and the self-check capability of the student can be established after a period of training. The existing meter-installing and electricity-connecting training device is closed on a circuit, and a student sees a part of a front panel with a connected wire and judges whether the wire is correctly connected or the wrong type of the wrong wire connection by measuring related voltage and current. However, the specific situation of the wiring when the corresponding error occurs cannot be intuitively reflected. Such as: when the secondary terminal K1K2 of the current transformer is connected reversely, the current can be judged to be reversely connected from the measurement, but the reverse connection is not directly seen. Alternatively, if the voltage defect is found through measurement, but it is not known from the actual wiring where the specific problem occurs, the voltage line may be disconnected, or the voltage line may be disconnected but the contact is poor. In the working environment, the error points of a voltage loop can be many in the meter installation and power connection process, and only the error effect is shown when the wire is wrongly connected. In addition, the simulation environment of the current wrong wiring simulation training device is that the voltage value is 220V or 100V, the voltage is high, the current is high, and potential safety hazards exist in the training.
Disclosure of Invention
In view of this, this application provides a training device for wiring teaching, through setting up pluggable socket for in teaching process, the student can in time correct after carrying out wrong line, improves student's learning efficiency, and through the observation window, can see the internal connection, makes the student when carrying out wrong line, can understand the reason of wiring mistake and where, further promotes student's learning effect.
The application provides a training set for wiring teaching includes:
the measuring cabinet comprises a front door arranged on the front side and a rear door arranged on the back side;
the front door is provided with an observation window;
the front side of the metering cabinet is provided with an electric energy meter tail and a combined junction box;
a voltage bus and a mutual inductor are arranged on the back of the metering cabinet;
the tail of the electric energy meter, the joint junction box, the voltage bus and the mutual inductor are all provided with pluggable interfaces;
the meter tail is detachably connected with the signal sampling points with corresponding serial numbers;
two ends of the mutual inductor are respectively connected with two adjacent signal source points;
the voltage bus bars are respectively connected with different signal source points.
Optionally, the number of the voltage busbars is four, and the transformers are respectively arranged on three of the voltage busbars.
Optionally, the metering cabinet further comprises a direct current power supply, and the direct current power supply is connected with the metering cabinet.
Optionally, the number of the signal source points and the number of the signal sampling points are sixteen, and the end points, which are numbered from 11 to 16, of the signal source points are respectively and fixedly connected with the end points of the corresponding serial numbers of the signal acquisition points.
Optionally, the signal source points, reference numerals 11-16, are used to generate a reference signal for signal analysis.
Optionally, the mutual inductors are respectively connected with indicator lamps with different colors.
Alternatively, the signal source of the signal origin is generated by NI9264 or NI 9263.
To sum up, the application provides a training set for wiring teaching, includes: the measuring cabinet comprises a front door arranged on the front side and a rear door arranged on the back side; the front door is provided with an observation window; the front side of the metering cabinet is provided with an electric energy meter tail and a combined junction box; a voltage bus and a mutual inductor are arranged on the back of the metering cabinet; the tail of the electric energy meter, the joint junction box, the voltage bus and the mutual inductor are all provided with pluggable interfaces; ten end values are arranged at the tail of the meter and are respectively detachably connected with signal sampling points corresponding to the serial numbers; two ends of the mutual inductor are respectively connected with two adjacent signal source points; the voltage bus bars are respectively connected with different signal source points.
The utility model provides a training device for wiring teaching through setting up pluggable socket for at the teaching in-process, the student can in time correct after carrying out wrong line, improves student's learning efficiency, and through the observation window, can see the internal connection line, makes the student when carrying out wrong line, can understand the reason of wiring mistake and where, further promotes student's learning effect.
Drawings
Fig. 1 is a schematic structural diagram of a front side of a metering cabinet of a training device for wiring teaching according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a back side of a metering cabinet of a training device for wiring teaching according to an embodiment of the present application;
fig. 3 is a three-phase four-wire connection schematic diagram of an electric energy meter of a training device for connection teaching provided by an embodiment of the application.
Detailed Description
The training device for wiring teaching provided by the embodiment of the application can be plugged in and pulled out through the socket, so that in the teaching process, a student can correct in time after carrying out wrong connection, the learning efficiency of the student is improved, and the internal connection can be seen through the observation window, so that the student can understand where the reason of wiring error is when carrying out wrong connection, and the learning effect of the student is further improved.
The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless explicitly stated or limited otherwise; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-3, fig. 1 is a schematic structural diagram of a front side of a measurement cabinet of a training device for wiring teaching according to an embodiment of the present application; fig. 2 is a schematic structural diagram of a back side of a metering cabinet of a training device for wiring teaching according to an embodiment of the present application; fig. 3 is a three-phase four-wire connection schematic diagram of an electric energy meter of a training device for connection teaching provided by an embodiment of the application.
The embodiment of the application provides a training device for wiring teaching, includes:
the metering cabinet comprises a front door arranged on the front side and a rear door arranged on the back side;
the front door is provided with an observation window;
the front side of the metering cabinet is provided with a meter tail and a combined junction box;
the back of the metering cabinet is provided with a voltage bus and a mutual inductor;
the meter tail, the combined junction box, the voltage bus and the mutual inductor are all provided with pluggable interfaces;
the meter tail is detachably connected with the signal sampling points corresponding to the serial numbers;
two ends of the mutual inductor are respectively connected with two adjacent signal source points;
the voltage bus bars are respectively connected with different signal source points.
It should be noted that the training device for wiring teaching provided by the embodiment of the application is provided with the metering cabinet, the front and the back of the metering cabinet are respectively provided with a door, and the front door is provided with the observation window. The front side of the metering cabinet is provided with an electric energy meter tail and a combined junction box, and the rear side of the metering cabinet is provided with a voltage busbar and a mutual inductor for collecting, analyzing and processing voltage and current signals of the electric energy meter tail. The electric energy meter tail, the combined junction box, the voltage busbar and the mutual inductor are all provided with plug-in interfaces, and all the interfaces of the electric energy meter tail and the combined junction box are plug-in interfaces. According to fig. 1, ten end values of the tail of the electric energy meter are provided, each end value is provided with a serial number and is connected with an interface with the same serial number in the signal sampling points, and the interfaces of the connected signal sampling points are all plug-in interfaces, so that the connection mode can be adjusted at will. Through the observation window, can observe the inside line mode of measurement cabinet, facilitate for student's study.
Furthermore, the number of the voltage busbars is four, and mutual inductors are respectively arranged on three of the voltage busbars.
It should be noted that four voltage busbars which are uniformly distributed are arranged on the back surface of the metering cabinet, as shown in fig. 2, the four voltage busbars are respectively numbered A, B, C, N, and a current transformer is arranged on the voltage busbar which is numbered A, B, C.
Further, still include DC power supply, DC power supply connects the measurement cabinet.
It should be noted that, in order to ensure the electricity utilization safety of the student in the learning process, the power supply used by the metering cabinet is a direct current power supply, and the voltage is 9-12V.
Furthermore, the number of the signal source points and the number of the signal sampling points are sixteen, and the end points with the numbers of 11-16 of the signal source points are respectively and fixedly connected with the end points of the corresponding serial numbers of the signal acquisition points.
It should be noted that the number of signal source points is 16, the number of signal sampling points is also 16, and the contacts of the signal source points are labeled with reference numbers one by one. Wherein, the 6 interfaces with the labels of 11-16 are respectively and correspondingly connected with the 6 interfaces of 11-16 of the signal sampling points and fixedly connected by adopting a conducting wire.
Further, signal sources, reference numerals 11-16, are used to generate reference signals for signal analysis.
It should be noted that, the signal source point and the signal sampling point are fixedly connected, and the signal flowing between the 6 connecting lines is used as a reference signal for signal analysis. That is, when learning, the trainee can compare the signal generated after connection with the reference signal by operating the connection mode of the other plug-in interface to see whether the signal is correct or not.
Further, the mutual inductors are respectively connected with indicator lamps with different colors.
It should be noted that the current transformers are respectively connected with indicator lights with different colors. For example, the color of the indicator light of the current transformer located on the voltage bus marked as a is yellow, the color of the indicator light of the current transformer located on the voltage bus marked as B is green, and the color of the indicator light of the current transformer located on the voltage bus marked as C is red. The color of the indicator light is only used as an example, and in practical application, the color of the indicator light is different between the current transformers, and is not limited to a certain color. Specific color-related identification referring to fig. 3, it is sufficient to distinguish between the line connections so that the trainee can learn and distinguish the connection manner. The circuit of the whole metering cabinet comprises a voltage path and a current loop, wherein the starting point of the voltage path is positioned at a voltage bus bar, and the end point is positioned at the tail of the electric energy meter; the starting point of the current loop starts from the secondary end (s1) of the current transformer, goes to the joint junction box through the conducting wire, then goes to the tail of the electric energy meter, then goes back to the junction box from the other terminal of the tail of the electric energy meter, and then goes back to the secondary end (s2) of the current transformer to end. Various electrical conditions were simulated in order to more closely approximate the true signal path. Therefore, the starting point of the signal source is arranged on the voltage bus bar and the current transformer. A reference point is arranged on the cabinet body, a reference A phase is arranged on the three-phase four-wire electric energy metering training device, and a reference ground is arranged on the three-phase three-wire electric energy metering training device.
Two connecting terminals of the same phase are connected by resistors on a current connecting terminal of the tail of the electric energy meter so as to simulate a current element in the electric energy meter, and a very small voltage is formed at a current terminal of the tail of the electric energy meter.
The starting point of the signal is provided with 16 signal source points which are respectively: a first element voltage signal source point 1; a first element current signal enters a line signal source point 2; a first element current signal outlet signal source point 3; a second element voltage signal source point 4; a second element current signal incoming signal source point 5; a second element current signal outlet signal source point 6; a third element voltage signal source point 7; a third element current signal incoming line signal source point 8; a third element current signal outgoing line signal source point 9; a zero line signal source point 10; an a-phase voltage signal source point 11; a phase a current signal source point 12; b-phase voltage signal source point 13; b-phase current signal source point 14; a C-phase voltage signal source point 15; the C-phase current signal source point 16.
Also set up 16 signal acquisition points at the table tail: a first element voltage signal sampling point 1; a first element current signal incoming line signal sampling point 2; a first element current signal outgoing line signal sampling point 3; a second element voltage signal sampling point 4; a second element current signal incoming line signal sampling point 5; a second element current signal outgoing line signal sampling point 6; a third element voltage signal sampling point 7; a third element current signal incoming line signal sampling point 8; a third element current signal outgoing line signal sampling point 9; a zero line signal sampling point 10; sampling point 11 of A phase voltage signal; a phase a current signal sampling point 12; b phase voltage signal sampling point 13; b-phase current signal sampling points 14; c-phase voltage signal sampling point 15; the C-phase current signal samples 16.
Further, the signal source of the signal source point is generated by NI9264 or NI 9263.
It should be noted that the source signal may be generated by NI9264 or NI9263, and may be switched to different understanding modes by the software.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (7)
1. A training device for wiring teaching, comprising:
the measuring cabinet comprises a front door arranged on the front side and a rear door arranged on the back side;
the front door is provided with an observation window;
the front side of the metering cabinet is provided with an electric energy meter tail and a combined junction box;
a voltage bus and a mutual inductor are arranged on the back of the metering cabinet;
the tail of the electric energy meter, the joint junction box, the voltage bus and the mutual inductor are all provided with pluggable interfaces;
the tail of the electric energy meter is detachably connected with the signal sampling points with corresponding serial numbers;
two ends of the mutual inductor are respectively connected with two adjacent signal source points;
the voltage bus bars are respectively connected with different signal source points.
2. The training device for wiring teaching of claim 1, wherein the number of the voltage busbars is four, and the transformers are respectively arranged on three of the voltage busbars.
3. The training set for teaching wiring as defined in claim 1, further comprising a dc power source connected to said measuring cabinet.
4. The training device for wiring teaching of claim 1, wherein the number of the signal source points and the number of the signal sampling points are sixteen, and the end points with the signal source points being numbered from 11 to 16 are respectively fixedly connected with the end points of the corresponding serial numbers of the signal acquisition points.
5. Training apparatus for teaching on-the-fly as claimed in claim 1, characterized in that the signal source points, reference numerals 11-16, are used to generate a reference signal as signal analysis.
6. The training device for teaching by wire connection as claimed in claim 1, wherein the transformers are respectively connected with indicator lights of different colors.
7. Training apparatus for wiring education as claimed in claim 1, characterized in that the signal source of the signal origin is generated by NI9264 or NI 9263.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911067339.2A CN111308409A (en) | 2019-11-04 | 2019-11-04 | Training device for wiring teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911067339.2A CN111308409A (en) | 2019-11-04 | 2019-11-04 | Training device for wiring teaching |
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| Publication Number | Publication Date |
|---|---|
| CN111308409A true CN111308409A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911067339.2A Pending CN111308409A (en) | 2019-11-04 | 2019-11-04 | Training device for wiring teaching |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111951648A (en) * | 2020-08-12 | 2020-11-17 | 广东电网有限责任公司广州供电局 | Three-phase four-wire system electric energy meter wiring demonstration device |
| CN112102692A (en) * | 2020-09-04 | 2020-12-18 | 广东电网有限责任公司 | Suspension type fault simulation training box |
| CN113012540A (en) * | 2021-02-25 | 2021-06-22 | 广东电网有限责任公司 | Wiring principle training device |
| CN113345292A (en) * | 2021-06-28 | 2021-09-03 | 广东电网有限责任公司 | Electric energy metering training device and control method thereof |
-
2019
- 2019-11-04 CN CN201911067339.2A patent/CN111308409A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111951648A (en) * | 2020-08-12 | 2020-11-17 | 广东电网有限责任公司广州供电局 | Three-phase four-wire system electric energy meter wiring demonstration device |
| CN112102692A (en) * | 2020-09-04 | 2020-12-18 | 广东电网有限责任公司 | Suspension type fault simulation training box |
| CN113012540A (en) * | 2021-02-25 | 2021-06-22 | 广东电网有限责任公司 | Wiring principle training device |
| CN113345292A (en) * | 2021-06-28 | 2021-09-03 | 广东电网有限责任公司 | Electric energy metering training device and control method thereof |
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