CN219227280U - Locking control device for preventing high-voltage switch cabinet from mistakenly powering off - Google Patents
Locking control device for preventing high-voltage switch cabinet from mistakenly powering off Download PDFInfo
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- CN219227280U CN219227280U CN202223323486.1U CN202223323486U CN219227280U CN 219227280 U CN219227280 U CN 219227280U CN 202223323486 U CN202223323486 U CN 202223323486U CN 219227280 U CN219227280 U CN 219227280U
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- comprehensive protection
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Abstract
The utility model relates to a locking control device for preventing a high-voltage switch cabinet from being mistakenly powered off, belonging to the technical field of locking control of the high-voltage switch cabinet; the technical problems to be solved are as follows: the hardware structure of the locking control device for preventing the error power failure of the high-voltage switch cabinet is improved; the technical scheme adopted for solving the technical problems is as follows: the control device comprises a switch cabinet comprehensive protection device, a remote control comprehensive protection device and a circuit breaker, wherein a manual switching-on input end of the switch cabinet comprehensive protection device is sequentially connected with a switching-on button and a local remote change-over switch in series and then is connected with a power input end; the output end of the comprehensive protection device of the switch cabinet is connected with the input end of the breaker opening control loop after being connected with the normally-closed contact of the lower-stage switch in series; the utility model is applied to locking control for preventing the misoperation of the switch cabinet.
Description
Technical Field
The utility model relates to a locking control device for preventing a high-voltage switch cabinet from being mistakenly powered off, and belongs to the technical field of locking control of high-voltage switch cabinets.
Background
The existing high-voltage switch cabinet is designed with a five-prevention system, but a connecting loop with a lower-level transformer station is generally free of locking points, when the high-voltage switch cabinet is overhauled and maintained, if the situation that the high-voltage switch cabinet is not in place is confirmed, the fault electricity is easily stopped due to manual misoperation, the power failure accident is caused, the transformer substation switch cabinet is damaged when the fault is serious, the production accident is caused, the personal safety of operators is even endangered, and the switch cabinet does not have the function of preventing the fault power failure due to the lack of a linkage locking circuit in the control circuit structure of the existing high-voltage switch cabinet.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and solves the technical problems that: the hardware structure of the locking control device for preventing the misoperation of the high-voltage switch cabinet is improved.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a prevent lockout controlling means of mistake power failure of high tension switchgear, includes that the switch cabinet is comprehensive to protect device 1n, remote control is comprehensive to protect device 2n, circuit breaker VS1, the manual combined floodgate input of switch cabinet is comprehensive to protect device 1n concatenates behind switch button KK and the local remote change over switch QK in proper order and links to each other with the power input, the remote control combined floodgate input of switch cabinet comprehensive to protect device 1n links to each other with the output of remote control comprehensive to protect device 2n, the input of remote control comprehensive to protect device 2n concatenates behind local remote change over switch QK and links to each other with the power input;
the output end of the comprehensive protection device 1n of the switch cabinet is connected with the input end of a switching control loop of the breaker VS1 after being connected with a normally-closed contact of a lower-stage switch in series, and the output end of the switching control loop of the breaker VS1 is connected with the output end of a power supply.
The output end of the comprehensive protection device 1n of the switch cabinet is also respectively connected with the input end of the tripping monitoring control loop and the input end of the closing control loop in the circuit breaker VS 1.
The input end of the comprehensive protection device 1n of the switch cabinet is also connected with the output end of the position combining monitoring control loop.
Compared with the prior art, the utility model has the following beneficial effects: according to the utility model, a lower-stage switch normally-closed point is arranged between a comprehensive protection device of a switch cabinet and a circuit breaker, so that the lower-stage switch normally-closed point is used as hard locking control, a remote control opening control end of the comprehensive protection device of an upper-stage high-voltage switch is provided with a switch current and a lower-stage switch position locking point, and is used as soft locking control, a switching-off loop can be conducted only under the condition that the lower-stage switch is opened, a switching-off coil can be powered on, and the comprehensive protection device can send a switching-off command when the switch running current is smaller than an empty circuit current value, so that the switch cabinet is controlled to have a power failure; the improved locking control device has the advantages of simple structure, low transformation cost, simple and convenient use, strong popularization, good running effect through testing, very effective prevention of false switching, guarantee of the reliability of the control power failure of the switch cabinet, guarantee of the safe and stable running of the power system, and effective avoidance of production accidents and personal injury accidents.
Drawings
The utility model is further described below with reference to the accompanying drawings:
fig. 1 is a schematic circuit structure of the present utility model.
Detailed Description
As shown in fig. 1, the utility model specifically provides a locking control device for preventing a high-voltage switch cabinet from mistakenly powering off, which comprises a switch cabinet comprehensive protection device 1n, a remote control comprehensive protection device 2n and a circuit breaker VS1, wherein a manual closing input end of the switch cabinet comprehensive protection device 1n is sequentially connected with a closing button KK and a local remote change-over switch QK in series and then is connected with a power input end, a remote control closing input end of the switch cabinet comprehensive protection device 1n is connected with an output end of the remote control comprehensive protection device 2n, and an input end of the remote control comprehensive protection device 2n is connected with the local remote change-over switch QK in series and then is connected with the power input end;
the output end of the comprehensive protection device 1n of the switch cabinet is connected with the input end of a switching control loop of the breaker VS1 after being connected with a normally-closed contact of a lower-stage switch in series, and the output end of the switching control loop of the breaker VS1 is connected with the output end of a power supply.
The output end of the comprehensive protection device 1n of the switch cabinet is also respectively connected with the input end of the tripping monitoring control loop and the input end of the closing control loop in the circuit breaker VS 1.
The input end of the comprehensive protection device 1n of the switch cabinet is also connected with the output end of the position combining monitoring control loop.
The utility model designs a locking structure for preventing false power failure aiming at a high-voltage switch cabinet, and the false power failure caused by false operation of the high-voltage switch is prevented by arranging a locking control circuit, so that production accidents caused by power interruption of the switch cabinet are avoided; specifically, in order to avoid power failure accidents caused by misclassification of a short-circuiting device, the utility model is characterized in that a hard locking module and a soft locking module are additionally arranged in an upper-level high-voltage switch control loop.
After the hard locking module is installed, the position signal of the lower-stage switch breaker connected with the switching-on loop of the upper-stage high-voltage switch in series can be realized, and the hard locking control is realized by arranging a normally closed point of the lower-stage switch between the comprehensive protection device of the switch cabinet and the breaker.
In addition, a soft locking module is arranged in the remote control comprehensive protection device, and a remote control opening control end of the upper-stage high-voltage switch comprehensive protection device is provided with a switching current and a locking point of a lower-stage switching position to realize soft locking control.
When the switching-off control device is used, the switching-off loop can be conducted only under the condition that the lower-stage switch is switched off, the switching-off coil can be electrified, and when the operating current of the switch is smaller than the current value of the empty circuit, the comprehensive protection device can send out a switching-off command to control the switch cabinet to cut off power.
In addition, the remote control comprehensive protection device provided with the background database is provided with the control structure, through setting the switch numbers, the verification process of manually filling the switch numbers in one step can be added in the remote control switching-off process, and if the switch to be operated is inconsistent with the input switch number, the remote control switching-off cannot be performed, so that the reliability of power failure of the control switch cabinet is further improved.
The specific structure of the utility model needs to be described that the connection relation between the component modules adopted by the utility model is definite and realizable, and besides the specific description in the embodiment, the specific connection relation can bring about corresponding technical effects, and on the premise of not depending on execution of corresponding software programs, the technical problems of the utility model are solved, the types of the components, the modules and the specific components, the connection modes of the components and the expected technical effects brought by the technical characteristics are clear, complete and realizable, and the conventional use method and the expected technical effects brought by the technical characteristics are all disclosed in patents, journal papers, technical manuals, technical dictionaries and textbooks which can be acquired by a person in the field before the application date, or the prior art such as conventional technology, common knowledge in the field, and the like, so that the provided technical scheme is clear, complete and the corresponding entity products can be reproduced or obtained according to the technical means.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (3)
1. The utility model provides a prevent lockout controlling means of high tension switchgear mistake power failure, includes that cubical switchboard is comprehensive to protect device 1n, remote control is comprehensive to protect device 2n, circuit breaker VS1, its characterized in that: the manual closing input end of the comprehensive protection device 1n of the switch cabinet is connected with the power input end after being sequentially connected with a closing button KK and a local remote change-over switch QK in series, the remote closing input end of the comprehensive protection device 1n of the switch cabinet is connected with the output end of the comprehensive protection device 2n of the remote control, and the input end of the comprehensive protection device 2n of the remote control is connected with the power input end after being connected with the local remote change-over switch QK in series;
the output end of the comprehensive protection device 1n of the switch cabinet is connected with the input end of a switching control loop of the breaker VS1 after being connected with a normally-closed contact of a lower-stage switch in series, and the output end of the switching control loop of the breaker VS1 is connected with the output end of a power supply.
2. The lockout control device for preventing false power failure of a high voltage switchgear of claim 1, wherein: the output end of the comprehensive protection device 1n of the switch cabinet is also respectively connected with the input end of the tripping monitoring control loop and the input end of the closing control loop in the circuit breaker VS 1.
3. The lockout control device for preventing false power failure of a high voltage switchgear of claim 1, wherein: the input end of the comprehensive protection device 1n of the switch cabinet is also connected with the output end of the position combining monitoring control loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223323486.1U CN219227280U (en) | 2022-12-12 | 2022-12-12 | Locking control device for preventing high-voltage switch cabinet from mistakenly powering off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223323486.1U CN219227280U (en) | 2022-12-12 | 2022-12-12 | Locking control device for preventing high-voltage switch cabinet from mistakenly powering off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219227280U true CN219227280U (en) | 2023-06-20 |
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ID=86753966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223323486.1U Active CN219227280U (en) | 2022-12-12 | 2022-12-12 | Locking control device for preventing high-voltage switch cabinet from mistakenly powering off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219227280U (en) |
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2022
- 2022-12-12 CN CN202223323486.1U patent/CN219227280U/en active Active
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