CN110223582B - Combined transformer explosion burning demonstration system and demonstration method - Google Patents
Combined transformer explosion burning demonstration system and demonstration method Download PDFInfo
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Abstract
The invention relates to a combined transformer explosion burning demonstration system and a demonstration method, and belongs to the technical field of electric energy metering training teaching. The invention comprises a combined junction box, a first input/output module, a second input/output module, an upper computer, a switching power supply, a relay unit and an explosion burning effect demonstration unit, wherein an input/output circuit is built by using the upper computer, the first input/output module and the second input/output module, and according to the state change of the indicator lamps of all input ports, the mutual short circuit among a UA wiring terminal, a UB wiring terminal and a UC wiring terminal, the disconnection among an IA+ wiring terminal and an IA-wiring terminal and the disconnection among an IC+ wiring terminal and an IC-wiring terminal can be judged, so that the explosion burning effect demonstration unit is triggered, and the secondary side short circuit of a voltage transformer and the secondary side open circuit of a current transformer inside the combined transformer are simulated, so that the explosion burning effect of the combined transformer can be simulated safely, vividly.
Description
Technical Field
The invention relates to a combined transformer explosion burning demonstration system and a demonstration method, and belongs to the technical field of electric energy metering training teaching.
Background
Along with the construction of the national strong power grid, the construction coverage area of the power grid is wider, the line planning is more reasonable, and branch institutions are more and more. For the division of rights among the power supply stations, an altimeter metering unit based on the combined transformer and the metering box is established at the gateway or the 10kV branch and is used for metering the power consumption in the respective areas, so that the more the combined transformer and the metering box are maintained.
The method is limited by the objective limitations that the secondary side of the current transformer in the combined transformer cannot be opened (high-voltage burnout can be generated after the current transformer is opened) and the secondary side of the voltage transformer cannot be short-circuited, the effect after the fault is demonstrated cannot be demonstrated by using real equipment, in addition, from the safety of safe operation and training of a power grid, the safety education training is not possible to be carried out on a production operation site, and the traditional electric power safety training method is old in content, single in means, mainly uses pictures or videos to explain students, and is not lively and comprehensive.
Therefore, there is a need for a combined transformer explosion-proof demonstration system to safely, realistically and vividly demonstrate the process and phenomenon of combined transformer explosion-proof to students.
Disclosure of Invention
The invention aims to provide a combined transformer explosion burning demonstration system and a demonstration method for safely, vividly and vividly demonstrating the explosion burning process and phenomenon of the combined transformer to students.
The invention provides a combined transformer explosion burning demonstration system for realizing the aim, which comprises a combined junction box, a first input/output module, a second input/output module, an upper computer, a switching power supply, a relay unit and an explosion burning effect demonstration unit, wherein the first input/output module is connected with the upper computer;
the combined junction box comprises a UA binding post, a UB binding post, a UC binding post, an IA+ binding post, an IA-binding post, an IC+ binding post and an IC-binding post;
the switching power supply comprises a reference voltage output end;
the UB wiring terminal is grounded; the input public end of the first input/output module is connected with the reference voltage output end, the first input end of the first input/output module is connected with the UA binding post, the second input end of the first input/output module is connected with the UC binding post, the third input end of the first input/output module is grounded through the IA+ binding post and the IA-binding post, the fourth input end of the first input/output module is grounded through the IC+ binding post and the IC-binding post, and the output end of the first input/output module controls the explosion burning effect demonstration unit through the relay unit;
the input public end of the second input/output module is connected with the UA binding post, the first input end of the second input/output module is connected with the UC binding post, and the input public end of the second input/output module is a pair of dry contacts with the first input end of the second input/output module;
the upper computer is respectively connected with the first input and output module and the second input and output module in a communication way and is used for controlling the output end of the first input and output module to output control signals according to the change of the state of the indicator lights of the first input end, the second input end, the third input end and the fourth input end of the first input and output module and the change of the state of the indicator lights of the first input end of the second input and output module.
Further, the explosion burning effect demonstrating unit includes a smoke generator and a lamp for manufacturing an atmosphere effect.
Further, the relay unit includes a first relay and a second relay; the output end of the first input/output module comprises a first output end and a second output end; the normally open contact of the first relay is connected in series in a power circuit of the lamp, and a coil of the first relay is connected with a first output end of the first input/output module; the normally open contact of the second relay is connected in series in the power circuit of the smoke generator, and the coil of the second relay is connected with the second output end of the first input/output module.
Further, the combined transformer explosion burning demonstration system further comprises a loudspeaker, and the upper computer is connected with the loudspeaker and used for playing the sound effect of the combined transformer explosion burning.
Further, the first input/output module adopts an MR-D0808-KN control module.
Further, the second input/output module adopts an EMR-D0404 control module.
Further, the combined transformer explosion burnout demonstration system also comprises a display screen and a camera, wherein the camera is arranged at the joint junction box and is used for shooting a wiring operation video of a student; the upper computer is connected with the camera and used for acquiring a wiring operation video of a student; the upper computer is connected with the display screen.
The invention also provides a demonstration method based on the combined transformer explosion and burnout demonstration system, when the first input end of the first input/output module, the second input end of the first input/output module or the indication lamp of the first input end of the second input/output module is detected to be turned on from off, the upper computer controls the output end of the first input/output module to output a control signal so as to control the explosion and burnout effect demonstration unit to demonstrate the explosion and burnout of the voltage transformer;
when the indication lamp of the third input end or the fourth input end of the first input and output module is detected to be turned on or off, the upper computer controls the output end of the first input and output module to output a control signal so as to control the explosion burning effect demonstration unit to demonstrate the explosion burning of the current transformer.
Further, the explosion burning effect demonstration unit comprises a smoke generator and a lamp for manufacturing atmosphere effects, the combined transformer explosion burning demonstration system further comprises a loudspeaker, and the upper computer is connected with the loudspeaker and used for playing the sound effect of explosion burning of the combined transformer;
the demonstration process of explosion burning of the voltage transformer comprises the following steps: the control lamp flashes according to a set rule, and after the smoke generator stops working and delays for a first set time, the lamp stops working; after the lamp starts to work, the smoke generator works after a second set time, and stops working after a third set time; after the lamp starts to work, after a fourth set time, the loudspeaker plays the sound effect of the explosion burning of the voltage transformer according to a set program.
Further, the demonstration process of the explosion and burning of the current transformer comprises the following steps: the control lamp flashes according to a set rule, and after the smoke generator stops working and delays for a fifth set time, the lamp stops working; after the lamp starts to work, the smoke generator works after a sixth set time, and stops working after a seventh set time; after the lamp starts to work, after eighth set time, the loudspeaker plays the sound effect of the explosion burning of the current transformer according to the set program.
The beneficial effects of the invention are as follows:
according to the invention, an input/output circuit is built by using an upper computer, a first input/output module and a second input/output module, and according to the state change of the indicator lamps of all input ports, the mutual short circuit among the UA wiring terminal, the UB wiring terminal and the UC wiring terminal, the disconnection among the IA+ wiring terminal and the IA-wiring terminal and the disconnection among the IC+ wiring terminal and the IC-wiring terminal can be judged, so that an explosion burning effect demonstration unit is triggered, the secondary side short circuit of the voltage transformer and the secondary side open circuit of the current transformer in the combined transformer are simulated, and the explosion burning effect demonstration unit can simulate the explosion burning effect of the combined transformer safely, vividly and vividly.
Drawings
FIG. 1 is a schematic diagram of circuit connections of an embodiment of a combined transformer blast burn-out presentation system of the present invention;
fig. 2 is a flowchart of an embodiment of a demonstration method corresponding to the combined transformer explosion burnout demonstration system of the present invention.
Detailed Description
Example 1
The embodiment comprises a combined junction box, a first input/output module, a second input/output module, an upper computer, a switching power supply, a relay unit and an explosion burning effect demonstration unit.
The combined junction box is used for simulating a junction box of a real combined transformer and specifically comprises a UA junction terminal, a UB junction terminal, a UC junction terminal, an IA+ junction terminal, an IA-junction terminal, an IC+ junction terminal and an IC-junction terminal, wherein during demonstration, wires are needed to be used for shorting the UA junction terminal, the UB junction terminal and the UC junction terminal in pairs, or the connection between the IA+ junction terminal and the IA-junction terminal and the connection between the IC+ junction terminal and the IC-junction terminal are disconnected for triggering the demonstration of the burnout explosion of the transformer after demonstration; through the manual wiring operation at each binding post, can simulate the secondary side short circuit of the voltage transformer and the secondary side open circuit of current transformer inside the combination transformer.
The switching power supply includes a reference voltage output.
The UB wiring terminal is grounded; the input public end of the first input and output module is connected with the reference voltage output end, the first input end of the first input and output module is connected with the UA binding post, the second input end of the first input and output module is connected with the UC binding post, the third input end of the first input and output module is grounded through the IA+ binding post and the IA-binding post, the fourth input end of the first input and output module is grounded through the IC+ binding post and the IC-binding post, and the output end of the first input and output module is used for controlling the explosion burning effect demonstration unit through the relay unit.
The input public end of the second input and output module is connected with the UA binding post, the first input end of the second input and output module is connected with the UC binding post, and the input public end of the second input and output module and the first input end of the second input and output module are a pair of dry contacts.
The upper computer is respectively connected with the first input and output module and the second input and output module in a communication way and is used for controlling the output end of the first input and output module to output control signals according to the change of the state of the indicator lights of the first input end, the second input end, the third input end and the fourth input end of the first input and output module and the change of the state of the indicator lights of the first input end of the second input and output module.
Example 2
This embodiment differs from embodiment 1 in that: a specific implementation mode of a combined transformer explosion burnout demonstration system is provided.
Specific connection of the present embodiment
Fig. 1 is a schematic circuit connection diagram of the present embodiment, wherein the first input/output module adopts an MR-D0808-KN control module, and the second input/output module adopts an EMR-D0404 control module. The explosion burning effect demonstration unit comprises a smoke generator and a lamp for manufacturing atmosphere effects, the relay unit comprises a first relay and a second relay, and the upper computer is an integrated machine.
The +12V end of the switching power supply is connected with an input public end COM1 of the MR-D0808-KN; the UB connecting terminal of the combined junction box is grounded; the DI0 port of the input port of the MR-D0808-KN is connected with the UA wiring terminal of the combined junction box; the DI1 port of the input port of the MR-D0808-KN is connected with the UC wiring terminal of the combined junction box; the low phase A current end IA-binding post of the combined junction box is grounded, and is connected with an input port DI2 of MR-D0808-KN through the high phase A current end IA+ binding post; the C-phase current high-end IC-connecting terminal of the combined junction box is grounded, and is connected with an input port DI3 of MR-D0808-KN through the C-phase current high-end IC+ connecting terminal.
The output port DO1 of the MR-D0808-KN is connected with a coil of the relay K1, and then the relay K1 controls the power supply zero line and the fire wire of the atmosphere lamp to enable the atmosphere lamp to act or stop, so that a lamplight effect is created; the output port DO2 of the MR-D0808-KN is connected with a coil of the relay K2, and then the relay K2 controls an external button normally open point of the smoke generator to enable the smoke generator to act or stop, so that a smoke effect is created.
The input common port COM1 of EMR-D0404 is connected to the input port DI0 of D0808, and the input port DI0 of EMR-D0404 is connected to the input port DI1 of MR-D0808-KN.
MR-D0808-KN passes through RS485 communication Port COM2 to be connected the Port1 Port of ethernet transponder, and EMR-D0404 passes through RS485 communication Port COM2 to be connected the Port2 Port of ethernet transponder, then the ethernet transponder uses the net twine to establish the communication with the all-in-one. The integrated machine is also provided with a loudspeaker, and can play the sound effect of explosion burning according to the requirement.
In this embodiment, each input port of the MR-D0808-KN input/output module has a respective indicator lamp, when the input common port has a high level and the output port has a low level, the indicator lamp corresponding to the output port is turned on, and at this time, if the low level of the output port is turned off, the indicator lamp corresponding to the output port is turned off. The input common terminal COM1 of the EMR-D0404 input-output module used in this embodiment and the input port DI0 thereof belong to a pair of dry contacts, the dry contacts belong to a passive switch, and have 2 states of closing and opening, when the input common terminal COM1 communicates with the input port DI0, the dry contacts are in a closed state, and an indicator lamp corresponding to the input port DI0 of the EMR-D0404 is turned on.
The simulation principle of the present embodiment is specifically described below.
Simulation principle of secondary side short circuit of voltage transformer of this embodiment
In the embodiment, since COM1 of MR-D0808-KN is connected with +12V high level and the UB wiring terminal is grounded, when the UB wiring terminal is short-circuited with the UA wiring terminal, the indicator lamp of DI0 of MR-D0808-KN is conducted, so that the indicator lamp is turned on by extinction, and therefore the all-in-one machine can judge whether the UB wiring terminal is short-circuited with the UA wiring terminal or not by detecting the state of the indicator lamp of DI 0; when the UB wiring terminal and the UC wiring terminal are in short circuit, the indicator lamp of DI1 of MR-D0808-KN is conducted, so that the indicator lamp is turned on by extinction, and therefore the integrated machine can judge whether the UB wiring terminal and the UC wiring terminal are in short circuit or not by detecting the state of the indicator lamp of DI 1. The input public end COM1 of the EMR-D0404 and the input port DI0 thereof belong to a pair of dry contacts, when the UA wiring terminal and the UC wiring terminal are in short circuit, the dry contacts are in a closed state, an indicator lamp corresponding to the input port DI0 of the EMR-D0404 is lightened, and the integrated machine can judge whether the UA wiring terminal and the UC wiring terminal are in short circuit or not by detecting the state of the indicator lamp at the input port DI0 of the EMR-D0404. Through the connection, the connection states of the UA binding post, the UB binding post and the UC binding post can be determined effectively. When some two of the UA binding post, UB binding post and UC binding post are short-circuited by human, based on the above-mentioned judging principle, this embodiment can judge the situation, and the simulation of the secondary side short circuit of the voltage transformer is completed.
Simulation principle of secondary side open circuit of current transformer of this embodiment
In the embodiment, the IA-connecting terminal is connected to the ground, and when the IA-connecting terminal is disconnected from the ia+ connecting terminal, the indicator lamp corresponding to the input port DI2 of the MR-D0808-KN is turned on to off, so that the integrated machine can judge the connection state of the IA-end and the ia+ end; the IC-end is connected with the ground, and when the IC-end is disconnected from the IC+ end, the indicator lamp corresponding to the input port DI3 of the MR-D0808-KN is turned on and off, so that the integrated machine can judge the connection state of the IC-end and the IC+ end. When the ia+ wiring terminal and the IA-wiring terminal are disconnected by people or the ic+ wiring terminal and the IC-wiring terminal are disconnected by people, based on the above judgment principle, the embodiment can judge the situation and complete the simulation of the secondary side open circuit of the current transformer.
When the integrated machine judges that short circuit exists between certain two ends of the UA binding post, the UB binding post and the UC binding post which represent the voltage transformer, or the connection between the IA+ binding post and the IA-binding post is broken, or the connection between the IC+ binding post and the IC-binding post is broken, the control MR-D0808-KN or the EMR-D0404 is controlled to output a control signal from the output end of the integrated machine, so that the atmosphere lamp and the smoke generator work, the burning process and the situation of the combined transformer are simulated, and during the period, the integrated machine can simulate the sound effect of burning explosion through a loudspeaker so as to increase the sense of reality.
And a camera is arranged near the joint junction box, is a camera capable of focusing in a short distance and is connected with a USB port of the all-in-one machine through a USB extension line with a signal amplification function. The camera can monitor the condition inside the metering box, can click a video button inside software to record video according to the requirement, and can project the condition inside the metering box onto a large screen or an integrated machine according to the requirement.
Specific demonstration method of this embodiment
Fig. 2 is a flowchart illustrating a method according to the present embodiment.
When the state of the indicator lamp corresponding to DI0 of the MR-D0808-KN control module is changed from off to on, the integrated machine judges that the UA wiring terminal and the UB wiring terminal in the combined wiring box are in short circuit.
When the state of the indicator lamp corresponding to DI1 of the MR-D0808-KN control module is changed from off to on, the integrated machine judges that the UB wiring terminal and the UC wiring terminal in the combined wiring box are in short circuit.
When the state of the indicator lamp corresponding to DI0 of the EMR-D0404 control module is changed from off to on, the integrated machine judges that the UA wiring terminal and the UC wiring terminal in the combined wiring box are in short circuit;
at this time, the explosion burning effect demonstration unit is controlled to demonstrate the explosion burning of the voltage transformer:
1) The K1 relay controlled by DO1 of the MR-D0808-KN control module acts, the atmosphere lamp flashes according to a certain rule, and the atmosphere lamp stops working after 3 seconds after the smoke machine stops;
2) The PC software of the all-in-one machine is provided with an audio plug-in unit, and the audio of the voltage transformer burnout explosion is played by a program of ringing once every 1 second, ringing once every 3 seconds, ringing once every 4 seconds and stopping afterwards;
3) The K2 relay controlled by the output port DO2 of the MR-D0808-KN control module acts after 3 seconds of time delay, the smoke generator sprays a large amount of smoke outwards, the smoke generator stops after 3 seconds of operation, and the voltage transformer is simulated to be burnt.
4) The animation curve configured in the PC software on the all-in-one machine is automatically played, and the voltage indicated by the curve is gradually reduced to 0V from high.
When the state of the indicator lamp corresponding to DI2 of the MR-D0808-KN control module is changed from on to off, the integrated machine judges that the IA+ wiring terminal and the IA-wiring terminal in the combined wiring box are disconnected.
When the state of the indicator lamp corresponding to DI3 of the MR-D0808-KN control module is changed from on to off, the integrated machine judges that the IC+ wiring terminal and the IC-wiring terminal in the combined wiring box are disconnected.
At this time, the control explosion burning effect demonstration unit carries out demonstration of current transformer explosion burning:
1) The K1 relay controlled by the output port DO1 of the MR-D0808-KN control module acts, the light generator flashes according to a certain rule until 3 seconds passes after the smoke machine stops, and the light generator stops working;
2) The PC software with the sound effect plug-in unit plays the sound effect of the current transformer burning explosion according to the procedures of delaying 2s later action, 3s sound once, 4s sound once, 5s sound once, 4 times in every 0.5s sound after, and stopping (7 s sound 7 times in total);
3) The K2 relay controlled by DO2 of the MR-D0808-KN control module acts after 3 seconds, the smoke generator sprays a large amount of smoke outwards, the smoke generator stops after 3 seconds of operation, and the transformer is simulated to be burnt.
4) The animation curve configured in the PC software on the all-in-one machine is automatically played, the voltage indicated by the curve is gradually increased from 0V, and the trend of the gradual increase of the voltage after the secondary open circuit of the current transformer is simulated.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (10)
1. The combined transformer explosion burning demonstration system is characterized by comprising a combined junction box, a first input/output module, a second input/output module, an upper computer, a switching power supply, a relay unit and an explosion burning effect demonstration unit;
the combined junction box comprises a UA binding post, a UB binding post, a UC binding post, an IA+ binding post, an IA-binding post, an IC+ binding post and an IC-binding post;
the switching power supply comprises a reference voltage output end;
the UB wiring terminal is grounded; the input public end of the first input/output module is connected with the reference voltage output end, the first input end of the first input/output module is connected with the UA binding post, the second input end of the first input/output module is connected with the UC binding post, the third input end of the first input/output module is grounded through the IA+ binding post and the IA-binding post, the fourth input end of the first input/output module is grounded through the IC+ binding post and the IC-binding post, and the output end of the first input/output module controls the explosion burning effect demonstration unit through the relay unit;
the input public end of the second input/output module is connected with the UA binding post, the first input end of the second input/output module is connected with the UC binding post, and the input public end of the second input/output module is a pair of dry contacts with the first input end of the second input/output module;
the upper computer is respectively connected with the first input and output module and the second input and output module in a communication way and is used for controlling the output end of the first input and output module to output control signals according to the change of the state of the indicator lights of the first input end, the second input end, the third input end and the fourth input end of the first input and output module and the change of the state of the indicator lights of the first input end of the second input and output module;
when the UB wiring terminal is short-circuited with the UA wiring terminal, the indicator light at the first input end of the first input/output module is turned on by extinction, when the UB wiring terminal is short-circuited with the UC wiring terminal, the indicator light at the second input end of the first input/output module is turned on by extinction, when the UA wiring terminal is short-circuited with the UC wiring terminal, the dry contact is in a closed state, the indicator light at the first input end of the second input/output module is turned on by extinction, after the IA-wiring terminal is disconnected with the IA+ wiring terminal, the indicator light at the third input end of the first input/output module is turned on to off, and when the IC-end is disconnected with the IC+ end, the indicator light at the fourth input end of the first input/output module is turned on to off.
2. The combination transformer blast presentation system of claim 1, wherein said blast effect presentation unit comprises a smoke generator and a lamp for creating an atmosphere effect.
3. The combination transformer blast presentation system of claim 2, wherein said relay unit comprises a first relay and a second relay; the output end of the first input/output module comprises a first output end and a second output end; the normally open contact of the first relay is connected in series in a power circuit of the lamp, and a coil of the first relay is connected with a first output end of the first input/output module; the normally open contact of the second relay is connected in series in the power circuit of the smoke generator, and the coil of the second relay is connected with the second output end of the first input/output module.
4. The combined transformer explosion burning demonstration system according to any one of claims 1 to 3, further comprising a speaker, wherein the upper computer is connected with the speaker, and is used for playing the sound effect of the combined transformer explosion burning.
5. The combined transformer blast burning demonstration system of claim 1, wherein the first input-output module is an MR-D0808-KN control module.
6. The combination transformer blast burn-out presentation system of claim 1 wherein the second input output module employs an EMR-D0404 control module.
7. The combined transformer explosion burning demonstration system according to claim 1, further comprising a display screen and a camera, wherein the camera is arranged at the combined junction box and is used for shooting a wiring operation video of a student; the upper computer is connected with the camera and used for acquiring a wiring operation video of a student; the upper computer is connected with the display screen.
8. The demonstration method based on the combined transformer explosion burning demonstration system as set forth in claim 1, wherein when the first input end of the first input/output module, the second input end of the first input/output module or the indication lamp of the first input end of the second input/output module is detected to be turned on from off, the upper computer controls the output end of the first input/output module to output a control signal to control the explosion burning effect demonstration unit to carry out demonstration of the explosion burning of the voltage transformer;
when the indication lamp of the third input end or the fourth input end of the first input and output module is detected to be turned on or off, the upper computer controls the output end of the first input and output module to output a control signal so as to control the explosion burning effect demonstration unit to demonstrate the explosion burning of the current transformer.
9. The demonstration method according to claim 8, wherein the explosion-burnout effect demonstration unit comprises a smoke generator and a lamp for manufacturing an atmosphere effect, the combined transformer explosion-burnout demonstration system further comprises a speaker, and the upper computer is connected with the speaker for playing the sound effect of the explosion burnout of the combined transformer;
the demonstration process of explosion burning of the voltage transformer comprises the following steps: the control lamp flashes according to a set rule, and after the smoke generator stops working and delays for a first set time, the lamp stops working; after the lamp starts to work, the smoke generator works after a second set time, and stops working after a third set time; after the lamp starts to work, after a fourth set time, the loudspeaker plays the sound effect of the explosion burning of the voltage transformer according to a set program.
10. The demonstration method according to claim 9, wherein the demonstration process of the explosion burnout of the current transformer is as follows: the control lamp flashes according to a set rule, and after the smoke generator stops working and delays for a fifth set time, the lamp stops working; after the lamp starts to work, the smoke generator works after a sixth set time, and stops working after a seventh set time; after the lamp starts to work, after eighth set time, the loudspeaker plays the sound effect of the explosion burning of the current transformer according to the set program.
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Citations (10)
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| CN210402869U (en) * | 2019-07-09 | 2020-04-24 | 郑州万特电气股份有限公司 | Explosion burning demonstration system for combined transformer |
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| CN201623477U (en) * | 2010-01-21 | 2010-11-03 | 保定市创新恒瑞测控有限公司 | Overvoltage protection device of current transformer |
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| CN110223582A (en) | 2019-09-10 |
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