CN220381198U - Electrified display device applied to transformer protection tripping outlet - Google Patents
Electrified display device applied to transformer protection tripping outlet Download PDFInfo
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- CN220381198U CN220381198U CN202321441485.9U CN202321441485U CN220381198U CN 220381198 U CN220381198 U CN 220381198U CN 202321441485 U CN202321441485 U CN 202321441485U CN 220381198 U CN220381198 U CN 220381198U
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- 101100235014 Capsicum annuum LCY1 gene Proteins 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 5
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- 238000005259 measurement Methods 0.000 abstract description 2
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Abstract
The utility model relates to the field of overhauling of transformer protection devices, in particular to an electrified display device applied to a transformer protection tripping outlet, which comprises a shell and a panel arranged on one side of the shell, wherein a port and an indicator lamp are arranged on the panel, and one end of the port is provided with a connecting device for being connected with a transformer protection tripping outlet pressing plate; a control circuit module is arranged in the shell; the control circuit module is connected with the other end of the port to acquire the output voltage of the transformer protection tripping outlet; the control circuit module is connected with the indicator lamp, and based on the received output voltage, the flicker of the indicator lamp is controlled to reflect whether the corresponding tripping outlet pressing plate is electrified or not, so that the flicker sequence of the indicator lamp is controlled to reflect the tripping matrix action, the situation that the transformer protection maintenance work needs multiple switching on/off switch transmission or multiple repeated measurement operation is effectively avoided, the operation time is shortened, the manpower is saved to a certain extent, and the working efficiency is improved.
Description
Technical Field
The utility model relates to the field of overhauling of transformer protection devices, in particular to an electrified display device applied to a transformer protection tripping outlet.
Background
When an electric power person performs work verification on the transformer protection device with the integrated main and backup, each transformer protection device at least needs to verify the opening state of the three-side switch twice, therefore, when the transformer protection device with the integrated main and backup is verified, at least needs to verify the opening state (including differential, backup and non-electric quantity protection) of the three-side switch with 6 times, so frequent opening and closing operations are easy to burn the opening coil and/or closing coil of the switch, especially in a transformer substation with longer operation time, the opening and closing coil is seriously aged, and frequent operation is unfavorable for safe and stable operation of equipment.
The electric personnel usually adopts a mode of 'switch tripping + measuring the voltage of the lower opening of a tripping outlet pressing plate of a three-side switch' to check whether a protection tripping circuit has a protection outlet. The method for measuring the voltage of the lower opening of the pressing plate is to measure the voltage of two outlet pressing plates respectively in tripping time limit by at least two universal meters, and observe the action condition of the transformer protection device to check the accuracy of the tripping matrix. However, as the interval between the backup protection time and the two tripping time of the transformer protection device is shorter (usually 0.3S-0.5S), the outlet pressing plate is instantly electrified, and an electric power person cannot immediately catch the instant electrified change of the voltage of the universal meter when measuring the lower opening of the outlet pressing plate by the universal meter, namely the tripping condition of the outlet of the transformer, therefore, the transformer needs to be measured for multiple times, the operation time is increased, and the working efficiency is reduced.
In addition, because the on-site operation team is more, considering team personnel and main transformer setting inspection personnel arrangement, only observing the transformer protection outlet clamp plate and getting the electricity phenomenon needs at least 2 people to cooperate, faces the problems of tight on-site maintenance operation time, heavy check task, few personnel and the like, and is difficult to ensure the integral propulsion of maintenance work.
Disclosure of Invention
In view of the above problems, the present utility model provides a live display device applied to a transformer protection trip outlet, which is helpful to reduce the operation time to a certain extent, save the manpower and improve the working efficiency.
The specific technical scheme provided by the utility model is as follows: the live display device comprises a shell and a panel arranged on one side of the shell, wherein a port and an indicator lamp are arranged on the panel, and a connecting device is arranged at one end of the port and is used for being connected with a pressure plate of the transformer protection tripping outlet;
a control circuit module is arranged in the shell;
the control circuit module is connected with the other end of the port to acquire the output voltage of the transformer protection tripping outlet;
the control circuit module is connected with the indicator lamp and controls the flashing of the indicator lamp based on the received output voltage so as to reflect whether the tripping outlet has the output voltage or not, and further controls the flashing sequence of the indicator lamp so as to reflect whether the tripping matrix acts correctly or not.
Further, at least four ports and four indicator lamps are arranged on the panel, and the ports and the indicator lamps are in one-to-one correspondence.
Further, the indicator light adopts a light emitting diode D1.
Further, the control circuit module comprises a trigger chip IC1, and a THR pin of the trigger chip IC1 is connected with the port;
the OUT pin of the trigger chip IC1 is connected with the A pin of the NAND gate chip IC 2;
the F pin of the non-gate chip IC2 is connected with the first end of the resistor R1 and the anode of the voltage stabilizing tube ZD 1;
the cathode of the voltage stabilizing tube ZD1 is connected with the anode D1 of the light-emitting diode D1;
the second end of the resistor R1 is connected with the first end of the capacitor C1;
the cathode of the light emitting diode D1 and the second end of the capacitor C1 are grounded;
the CRTL pin of the trigger chip IC1 is grounded through a capacitor C2;
both the RESET pin of the flip-flop chip IC1 and the VCC pin of the flip-flop chip IC1 are connected to the power supply VCC.
Further, the connecting device comprises a connecting wire and a clamping device, one end of the connecting wire is connected to the port, and the other end of the connecting wire is provided with the clamping device.
Further, the clamping device adopts crocodile clips.
Further, the flip-flop chip IC1 employs 555 monostable flip-flops.
The utility model has the beneficial effects that:
according to the utility model, the port of the transformer live display device is connected with the corresponding tripping outlet pressing plate through the connecting device, so that the voltage of the tripping outlet pressing plate is acquired, the control circuit module controls the lighting of the indicating lamp based on the acquired voltage to reflect whether the corresponding tripping outlet pressing plate is electrified or not, and reflects the sequence of the transformer based on the lighting sequence of the indicating lamp, so that an electric staff can judge whether the action of the tripping matrix is consistent with that of the tripping matrix or not through naked eyes, thereby judging whether the tripping matrix is correct or not, effectively avoiding the need of multiple switching on and off switch transmission or multiple repeated measuring outlet pressing plate operation in transformer protection maintenance work, reducing the operation time, saving manpower to a certain extent and improving the working efficiency.
In addition, the utility model has reliable design principle, simple structure and very wide application prospect.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic connection diagram of a transformer live display device panel and a main protection screen connection according to an embodiment of the present utility model.
Fig. 2 is a circuit schematic diagram of a control circuit module of a transformer live display device according to another embodiment of the present utility model.
1-a panel; 2-port; 3-indicator lights; 4-connecting means; 5-trip outlet hold-down.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
The embodiment provides an embodiment of a live display device applied to a transformer protection tripping outlet, as shown in fig. 1, the live display device comprises a shell and a panel 1 arranged on one side of the shell, a port 2 and an indicator lamp 3 are arranged on the panel 1, and a connecting device 4 is arranged at one end of the port 2 and used for being connected with a protection tripping outlet pressing plate 5 on a transformer protection screen. A control circuit module is arranged in the shell.
The control circuit module is connected with the other end of the port 2 to obtain the output voltage of a transformer protection tripping outlet;
the control circuit module is connected with the indicator lamp and controls the flickering of the indicator lamp based on the received output voltage.
It should be noted that the drawings are only exemplary, and a user may set the number of ports 2 and the number of indicator lamps on the panel of the transformer charging display device according to actual needs.
The protective tripping outlet pressing plate 5 on the protective screen of the transformer is normally provided with an upper opening of-110V to the ground and a lower opening of 0V, so that the protective tripping outlet pressing plate is protected from being exported; if the upper opening is to the ground-110V and the lower opening is +110V, the protection outlet is protected, and therefore whether the protection is operated is judged through the potential of the lower opening of the tripping outlet pressing plate 5.
When the utility model is used, the live display device of the transformer is connected with the protective tripping outlet pressing plate 5 on the main transformer protective screen through the connecting device 4, when the transformer is in protective action, the tripping relay contact is closed, the potential at the lower opening of the tripping outlet pressing plate 5 is suddenly changed to +110V, the control circuit module controls the indicator lamp to be lightened based on the suddenly changed voltage, and after the indicator lamp is lightened for a preset holding period (the induction time of the relay in the current market is about 200ms, and the preset period is set to be 200 ms), the indicator lamp is controlled to be extinguished, so that whether the tripping outlet pressing plate 5 is electrified or not is reflected through the flickering of the indicator lamp 3.
Because the interval of the two tripping time limits of the main and backup protection devices of the transformer is generally 300-500 ms, which is larger than the preset holding time period for the control indicator lamp to be lighted, the control indicator lamp can accurately reflect the lighting sequences of different outlets of the two tripping time limits, so that electric personnel can judge whether the tripping matrix actions are consistent with each other or not by naked eyes, thereby judging whether the tripping matrix actions are correct or not, effectively avoiding the need of multiple switching-on and switching-off transmission or repeated measurement operations in the transformer protection maintenance work, reducing the operation time, saving the manpower to a certain extent and improving the working efficiency.
Illustratively, at least four ports 2 and four indicator lamps 3 are arranged on the panel 1, and the ports 2 are in one-to-one correspondence with the indicator lamps 3.
For example, the first port, the second port, the third port and the fourth port are electrically connected with the corresponding protection trip outlet pressing plate 5 on the transformer protection screen through the connecting device 4. According to the selection of the ports, three rolls are taken as an example according to specific test requirements, differential protection needs to jump off the three-side switch of the main transformer, tests are carried out only on the first port to the third port (or 3 optional ports) corresponding to the outlet of the three-side switch, and tests are carried out on at least 4 ports corresponding to the outlet to be tested when the low-voltage section, the low-voltage side switch and the three-side switch are needed to jump off for low-backup tests.
Judging the sequence of outlets to be tested of each tripping time limit of the transformer according to the sequence of the indicator lamps. For example, if the main transformer differential protection simultaneously trips the main transformer three-side switch, it can be observed that the 3 ports correspond to the indicator lamps and flash simultaneously. If the backup protection is low, the corresponding four indicator lights may be observed to flash, such as a first indicator light flashing, then a second indicator light flashing, then a third and fourth indicator lights flashing simultaneously.
The utility model provides another embodiment of the live display device applied to the transformer protection tripping outlet, as shown in fig. 2, and the indicator light adopts a light emitting diode D1.
The control circuit module comprises a trigger chip IC1, and the trigger chip IC1 adopts a 555 monostable trigger for example.
The THR pin of the trigger chip IC1 is connected with the port 2;
the OUT pin of the trigger chip IC1 is connected with the A pin of the NAND gate chip IC 2;
the F pin of the non-gate chip IC2 is connected with the first end of the resistor R1 and the anode of the voltage stabilizing tube ZD 1;
the cathode of the voltage stabilizing tube ZD1 is connected with the anode D1 of the light-emitting diode D1;
the second end of the resistor R1 is connected with the first end of the capacitor C1;
the cathode of the light emitting diode D1 and the second end of the capacitor C1 are grounded;
the CRTL pin of the trigger chip IC1 is grounded through a capacitor C2;
both the RESET pin of the flip-flop chip IC1 and the VCC pin of the flip-flop chip IC1 are connected to the power supply VCC.
Wherein, the capacitor C1 is a delay capacitor and the resistor R1 is a delay resistor.
When the trigger device is used, the crocodile clamp of the connecting device 4 is clamped on the protective tripping outlet pressing plate 5, when the transformer is in protective action, the tripping relay is connected, the potential at the lower opening of the tripping outlet pressing plate 5 is suddenly changed to +110V, the potential is transmitted to the THR pin 6 pin of the trigger chip IC1 through the port by the connecting device 4, the trigger chip IC1 is in a communication state under the action of a trigger signal due to the action of the potential suddenly changed rising edge, the trigger chip IC1 is turned from a steady state (without the trigger signal) to a temporary steady state (with the trigger signal), the OUT pin 7 pin of the trigger chip IC1 outputs a low level, and the high level is output after passing through the non-gate chip IC2, and then the indicator lamp 6 of the electrified display device is lightened through the voltage stabilizing tube 9. Due to the action of the delay resistor R1 and the delay capacitor C1 in the circuit, after the trigger pulse is kept for 200ms (the induction time of a relay in the current market is about 200 ms), the trigger 8 can be restored to a steady state, the OUT pin of the trigger chip IC1 outputs a low level, the relay is in an off state, and the indicator lamp of the electrified display device is not lighted. The charged state of the trip outlet pressure plate is then reflected by the display lamp being on. The interval between the two tripping time limits of the main transformer backup protection is usually 300-500 ms, which is longer than the holding time of each lighting of the trigger relay, the trigger chip IC1 can drive the indicator lamps to flash sequentially, and whether the sequence of the actions of the indicator lamps is consistent with that of the tripping matrix is judged to correct the tripping matrix of the main transformer.
The connection means 4 comprise, for example, a connection line with one end connected to a port and a clamping means provided at the other end. The clamping device adopts crocodile clamps.
Although the present utility model has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present utility model is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present utility model by those skilled in the art without departing from the spirit and scope of the present utility model, and it is intended that all such modifications and substitutions be within the scope of the present utility model/be within the scope of the present utility model as defined by the appended claims. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (7)
1. An electrified display device applied to a transformer protection trip outlet, comprising: the transformer protection tripping device comprises a shell and a panel arranged on one side of the shell, wherein a port and an indicator lamp are arranged on the panel, and a connecting device is arranged at one end of the port and used for being connected with a transformer protection tripping outlet pressing plate;
a control circuit module is arranged in the shell;
the control circuit module is connected with the other end of the port to acquire the output voltage of the transformer protection tripping outlet;
the control circuit module is connected with the indicator lamp and controls the flashing of the indicator lamp based on the received output voltage so as to reflect whether the tripping outlet has the output voltage or not, and further controls the flashing sequence of the indicator lamp so as to reflect whether the tripping matrix acts correctly or not.
2. The live display device for a transformer protection trip outlet according to claim 1, wherein at least four ports and four indicator lamps are provided on the panel, the ports being in one-to-one correspondence with the indicator lamps.
3. The live display device for a transformer protection trip outlet according to claim 2, wherein the indicator light employs a light emitting diode D1.
4. The live display device applied to a transformer protection trip outlet according to claim 3, wherein the control circuit module comprises a trigger chip IC1, the THR pin of the trigger chip IC1 being connected to a port;
the OUT pin of the trigger chip IC1 is connected with the A pin of the NAND gate chip IC 2;
the F pin of the non-gate chip IC2 is connected with the first end of the resistor R1 and the anode of the voltage stabilizing tube ZD 1;
the cathode of the voltage stabilizing tube ZD1 is connected with the anode D1 of the light-emitting diode D1;
the second end of the resistor R1 is connected with the first end of the capacitor C1;
the cathode of the light emitting diode D1 and the second end of the capacitor C1 are grounded;
the CRTL pin of the trigger chip IC1 is grounded through a capacitor C2;
both the RESET pin of the flip-flop chip IC1 and the VCC pin of the flip-flop chip IC1 are connected to the power supply VCC.
5. The live display device for a transformer protection trip outlet according to claim 1, wherein the connection means comprises a connection wire and a clamping means, one end of the connection wire is connected to the port, and the other end is provided with the clamping means.
6. The live display device for a transformer protection trip outlet of claim 5 wherein the clamping means is a crocodile clip.
7. The live display device for a transformer protection trip outlet according to claim 4 wherein the trigger chip IC1 employs a 555 monostable trigger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321441485.9U CN220381198U (en) | 2023-06-07 | 2023-06-07 | Electrified display device applied to transformer protection tripping outlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321441485.9U CN220381198U (en) | 2023-06-07 | 2023-06-07 | Electrified display device applied to transformer protection tripping outlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220381198U true CN220381198U (en) | 2024-01-23 |
Family
ID=89565267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321441485.9U Active CN220381198U (en) | 2023-06-07 | 2023-06-07 | Electrified display device applied to transformer protection tripping outlet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220381198U (en) |
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2023
- 2023-06-07 CN CN202321441485.9U patent/CN220381198U/en active Active
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