CN213602192U - Anti-tripping control circuit of SF6 full-insulation totally-enclosed looped network switch cabinet - Google Patents
Anti-tripping control circuit of SF6 full-insulation totally-enclosed looped network switch cabinet Download PDFInfo
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- CN213602192U CN213602192U CN202022063906.1U CN202022063906U CN213602192U CN 213602192 U CN213602192 U CN 213602192U CN 202022063906 U CN202022063906 U CN 202022063906U CN 213602192 U CN213602192 U CN 213602192U
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Abstract
The utility model discloses a totally closed looped netowrk cubical switchboard of SF6 all insulation prevents jumping control circuit, the totally closed looped netowrk cubical switchboard of SF6 prevent jumping control circuit and include: the device comprises a power supply control unit, a switching-off loop, a switching-on loop, an energy storage motor unit and an indicating unit; the switching-on loop comprises an on-site switching-on unit, a remote control switching-on unit, an anti-tripping unit and a protection unit; the power supply control unit is electrically connected with a switching-off loop, the local switching-on unit is electrically connected with the switching-off loop, the remote control switching-on unit, the anti-tripping unit, the protection unit and the local switching-on unit are sequentially and electrically connected, the energy storage motor unit is electrically connected with the protection unit, and the indication unit is respectively and electrically connected with the switching-off loop and the switching-on loop. The utility model discloses when can effectively prevent under the unexpected condition that the combined floodgate contact of circuit breaker mechanism fails in time to return to cause circuit breaker mechanism to take place the leap formula combined floodgate, security and reliability are high.
Description
Technical Field
The utility model relates to an electrical control technical field especially relates to a totally closed looped netowrk cubical switchboard of SF6 full insulation prevents jumping control circuit.
Background
At present, a V unit (circuit breaker mechanism) in an SF6 (sulfur hexafluoride) full-insulation fully-closed ring network switch cabinet adopts a pre-energy-storage circuit breaker mechanism. When the circuit breaker mechanism is electrically switched on, the circuit breaker mechanism can automatically store energy and prepare for the next action. The electric energy storage rear circuit breaker mechanism can perform actions such as electric closing and opening of a control switch, closing and opening of the control switch and the like. The traditional circuit breaker mechanism is directly additionally provided with an opening and closing control switch in an opening and closing loop, and the opening and closing operation of the circuit breaker mechanism is directly controlled by the opening and closing control switch. Because the circuit breaker mechanism is generally provided with the comprehensive protector, the comprehensive protector has the function that when faults such as interphase short circuit, grounding and the like occur on a lower-level line of the circuit breaker mechanism, the comprehensive protector can automatically send a tripping command to further expand the opening and closing accidents of the circuit breaker mechanism. If the operator does not loosen the handle, the closing contact of the automatic device is adhered, and the breaker mechanism is closed on a fault line and equipment due to the fact that the opening and closing control switch or the closing contact of the automatic device cannot return timely (for example, the operator does not loosen the handle, and the closing contact of the automatic device is adhered), and the breaker mechanism is continuously closed and cut. Therefore, the invention provides an anti-tripping control circuit of an SF6 fully-insulated and fully-closed ring network switch cabinet, which has high reliability and can better prevent accidents from happening, and the anti-tripping control circuit becomes a problem to be solved by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a totally closed looped netowrk cubical switchboard of SF6 full insulation prevents jumping control circuit is provided.
The utility model discloses an anti-tripping control circuit of SF6 full-insulation totally-enclosed looped network switch cabinet, which comprises a power supply control unit, a brake separating loop, a closing loop, an energy storage motor unit and an indicating unit; the switching-on loop comprises an on-site switching-on unit, a remote control switching-on unit, an anti-tripping unit and a protection unit; the power supply control unit is electrically connected with a switching-off loop, the local switching-on unit is electrically connected with the switching-off loop, the remote control switching-on unit, the anti-tripping unit, the protection unit and the local switching-on unit are sequentially and electrically connected, the energy storage motor unit is electrically connected with the protection unit, and the indication unit is respectively and electrically connected with the switching-off loop and the switching-on loop.
Preferably, the anti-tripping unit comprises an intermediate relay and an auxiliary switch; the normally closed point of the intermediate relay is electrically connected with the on-site switching-on unit, the normally open point of the intermediate relay is electrically connected with the first end of the auxiliary switch, and the second end of the auxiliary switch is electrically connected with the on-site switching-on unit.
Preferably, the opening circuit comprises an external trip unit, a protection trip unit, a local opening unit and a remote control opening unit; the external tripping unit is electrically connected with the power control unit, the external tripping unit, the protection tripping unit, the local switching-off unit and the remote control switching-off unit are electrically connected at one time, and the remote control switching-off unit is electrically connected with the local switching-on unit.
Preferably, the power control unit comprises a control power supply and air switch subunit; the air switch subunit is electrically connected with the control unit.
Preferably, the indicating unit comprises a closing indicating subunit and an opening indicating subunit; the switching-on indicating subunit is electrically connected with the switching-on loop, and the switching-off indicating subunit is electrically connected with the switching-off loop.
The utility model discloses a totally closed looped netowrk cubical switchboard of SF6 all insulation prevents that jump control circuit has following beneficial effect, the utility model discloses a totally closed looped netowrk cubical switchboard of SF6 all insulation prevents that jump control circuit includes: the device comprises a power supply control unit, a switching-off loop, a switching-on loop, an energy storage motor unit and an indicating unit; the switching-on loop comprises an on-site switching-on unit, a remote control switching-on unit, an anti-tripping unit and a protection unit; the power supply control unit is electrically connected with a switching-off loop, the local switching-on unit is electrically connected with the switching-off loop, the remote control switching-on unit, the anti-tripping unit, the protection unit and the local switching-on unit are sequentially and electrically connected, the energy storage motor unit is electrically connected with the protection unit, and the indication unit is respectively and electrically connected with the switching-off loop and the switching-on loop. The power supply control unit is used for controlling power supply output; the energy storage motor unit is used for stretching a spring in the switching-on loop or the switching-off loop to enable the spring to have corresponding potential energy to perform switching-on action or switching-off action; the indicating unit is used for indicating the switching-on state and the switching-off state of the circuit breaker mechanism; when the utility model provides a when SF6 full insulation totally closed looped netowrk cubical switchboard V unit subordinate line broke down, outside integrated protection ware passes through the input tripping operation instruction of integrated protection input, controls the utility model provides a tripping operation of SF6 full insulation totally closed looped netowrk cubical switchboard V unit, in time the protection prevents that the circuit from further damaging. And if the operator operates accidentally, the closing control signal input by the local closing unit or the remote closing unit is just closed on the fault line, and the V unit at the moment can be continuously switched. At the moment, the anti-tripping unit automatically cuts off a switching-on loop, so that repeated switching-on and switching-off actions of the switch cabinet equipment are effectively avoided, further damage to the equipment is protected, and accidents such as personnel injury are prevented. Therefore, the utility model discloses effectively prevent under the unexpected condition when the combined floodgate contact of circuit breaker mechanism fails in time to return to cause the circuit breaker to take place the leap formula combined floodgate, security and reliability are high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the drawings:
fig. 1 is a schematic block diagram of an anti-trip control circuit of an SF6 fully insulated and fully closed ring main unit according to a preferred embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an anti-trip control circuit of the SF6 fully insulated and fully closed ring main unit according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of protection of the present invention.
The preferred embodiment of the present invention is shown in fig. 1, and includes a power control unit 1, a switching-off loop 2, a switching-on loop 3, an energy storage motor unit 4 and an indication unit 5; the closing loop 3 comprises an on-site closing unit 31, a remote control closing unit 32, an anti-tripping unit 33 and a protection unit 34; the power supply control unit 1 is electrically connected with the opening loop 2, the local closing unit 31 is electrically connected with the opening loop 2, the remote control closing unit 32, the anti-tripping unit 33, the protection unit 34 and the local closing unit 31 are sequentially and electrically connected, the energy storage motor unit 4 is electrically connected with the protection unit 34, and the indication unit 5 is respectively and electrically connected with the opening loop 2 and the closing loop 3. The power supply control unit 1 is used for controlling power supply output; the energy storage motor unit 4 is used for stretching a spring in the closing loop 3 or the opening loop 2 to enable the spring to have corresponding potential energy to perform closing action or opening action; the indicating unit 5 is used for indicating the switching-on state and the switching-off state of the circuit breaker mechanism; when the utility model provides a when SF6 full insulation totally closed looped netowrk cubical switchboard V unit subordinate line broke down, outside integrated protection ware passes through the input tripping operation instruction of integrated protection input, controls the utility model provides a tripping operation of SF6 full insulation totally closed looped netowrk cubical switchboard V unit, in time the protection prevents that the circuit from further damaging. At this time, if the operator accidentally operates, the closing control signal input by the local closing unit 31 or the remote closing unit 32 is just closed on the fault line, and then the V unit at this time may have a continuous switching phenomenon. At this time, the anti-tripping unit 33 automatically cuts off a switching-on loop, so that repeated switching-on and switching-off actions of the switch cabinet equipment are effectively avoided, further damage to the equipment is protected, and accidents such as personal injury and the like are also prevented. Therefore, the utility model discloses effectively prevent under the unexpected condition when the combined floodgate contact of circuit breaker mechanism fails in time to return to cause circuit breaker mechanism to take place the leap formula combined floodgate, security and reliability are high.
Preferably, referring to fig. 2, the anti-jump unit 33 includes an intermediate relay KA1 and an auxiliary switch QF 1; the normally closed point of the intermediate relay KA1 is electrically connected with the local closing unit 31, the normally open point of the intermediate relay KA1 is electrically connected with the first end of the auxiliary switch QF1, and the second end of the auxiliary switch QF1 is electrically connected with the local closing unit 31. It can be understood that, in the present embodiment, after the auxiliary switch QF1 and the intermediate relay KA1 are connected in series, the auxiliary switch AF1 and the intermediate relay KA1 are connected in parallel with the local closing unit 31. Therefore, when the integrated protector inputs a trip instruction through the opening loop 2 and the local closing unit 31 is in a closing state due to an accident condition, and the breaker mechanism is in a continuous closing and opening action, the normally-closed point of the intermediate relay KA1 is disconnected, and the local closing unit 31 is cut off, so that the closing and opening are disconnected, and the continuous closing and opening phenomenon is prevented.
Preferably, the opening circuit 2 comprises an external trip unit 21, a protection trip unit 22, a local opening unit 23 and a remote opening unit 24; the external trip unit 21 is electrically connected to the power control unit 1, the external trip unit 21, the protection trip unit 22, the local breaking unit 23, and the remote breaking unit 24 are electrically connected at one time, and the remote breaking unit 24 is electrically connected to the local closing unit 31. It is understood that TM is the external trip contact, I N is the integrated protection input, SA is the remote/local transfer switch, SBO is the local opening contact, SBC is the local closing contact, YF is the remote opening contact, YH is the remote closing contact. In the present embodiment, the local closing unit 31 or the remote closing unit 32, the local opening unit or the remote opening unit is controlled to switch through the remote/local transfer switch SA.
Preferably, the power control unit 1 includes a control power source 11 and an air switch subunit 12; the air switch subunit 11 is electrically connected to the control unit 12. In this embodiment, the control power supply 11 is an external DC48V power supply, and the control switch subunit 12 plays a further role in protecting the control power supply 11, so the utility model has high reliability.
Preferably, the indicating unit comprises a closing indicating subunit 51 and an opening indicating subunit 52; the closing indication subunit 51 is electrically connected to the closing loop 3, and the opening indication subunit 52 is electrically connected to the opening loop 2. In this embodiment, the switching-off state and the switching-on state of the circuit breaker mechanism are respectively indicated by the indicator lamp HR and the indicator lamp HG.
In summary, in the anti-tripping control circuit of the SF6 fully-insulated and fully-closed ring network switch cabinet provided by the present invention, the power control unit 1 is used for controlling the power output; the energy storage motor unit 4 is used for stretching a spring in the closing loop 3 or the opening loop 2 to enable the spring to have corresponding potential energy to perform closing action or opening action; the indicating unit 5 is used for indicating the switching-on state and the switching-off state of the circuit breaker mechanism; when the utility model provides a when SF6 full insulation totally closed looped netowrk cubical switchboard V unit subordinate line broke down, outside integrated protection ware passes through the input tripping operation instruction of integrated protection input, controls the utility model provides a tripping operation of SF6 full insulation totally closed looped netowrk cubical switchboard V unit, in time the protection prevents that the circuit from further damaging. At this time, if the operator accidentally operates, the closing control signal input by the local closing unit 31 or the remote closing unit 32 is just closed on the fault line, and then the V unit at this time may have a continuous switching phenomenon. At this time, the anti-tripping unit 33 automatically cuts off a switching-on loop, so that repeated switching-on and switching-off actions of the switch cabinet equipment are effectively avoided, further damage to the equipment is protected, and accidents such as personal injury and the like are also prevented. Therefore, the utility model discloses effectively prevent under the unexpected condition when the combined floodgate contact of circuit breaker mechanism fails in time to return to cause circuit breaker mechanism leap formula combined floodgate, security and reliability are high.
The anti-tripping control circuit of the SF6 fully-insulated and fully-closed ring main unit provided by the present invention is introduced in detail, and a specific example is applied to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, to the general technical personnel in this field, according to the utility model discloses an idea, all can have the change part on concrete implementation and application scope, to sum up, this description content only is the utility model discloses an embodiment, does not consequently restrict the utility model discloses a patent scope, all utilize the equivalent structure or the equivalent flow transform that the content of the description and the attached drawing did, or directly or indirectly use in other relevant technical fields, all the same reason is included in the utility model discloses a patent protection scope. And should not be construed as limiting the invention.
Claims (4)
1. The utility model provides a totally closed looped netowrk cubical switchboard of SF6 all insulation prevents jumping control circuit which characterized in that includes: the device comprises a power supply control unit, a switching-off loop, a switching-on loop, an energy storage motor unit and an indicating unit; the switching-on loop comprises an on-site switching-on unit, a remote control switching-on unit, an anti-tripping unit and a protection unit; the power supply control unit is electrically connected with a switching-off loop, the local switching-on unit is electrically connected with the switching-off loop, the remote control switching-on unit, the anti-tripping unit, the protection unit and the local switching-on unit are sequentially and electrically connected, the energy storage motor unit is electrically connected with the protection unit, and the indication unit is respectively and electrically connected with the switching-off loop and the switching-on loop.
2. The anti-tripping control circuit of an SF6 fully insulated and fully enclosed ring main unit as claimed in claim 1, wherein said anti-tripping unit includes an intermediate relay and an auxiliary switch; the normally closed point of the intermediate relay is electrically connected with the on-site switching-on unit, the normally open point of the intermediate relay is electrically connected with the first end of the auxiliary switch, and the second end of the auxiliary switch is electrically connected with the on-site switching-on unit.
3. The anti-tripping control circuit of an SF6 fully insulated and fully enclosed ring main unit as claimed in claim 1, wherein said trip circuit includes an external trip unit, a protection trip unit, a local trip unit and a remote control trip unit; the external tripping unit is electrically connected with the power control unit, the external tripping unit, the protection tripping unit, the local switching-off unit and the remote control switching-off unit are electrically connected at one time, and the remote control switching-off unit is electrically connected with the local switching-on unit.
4. The anti-trip control circuit of an SF6 fully insulated and fully enclosed ring main unit as claimed in claim 1, wherein said power control unit includes a control power and air switch subunit; the air switch subunit is electrically connected with the control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022063906.1U CN213602192U (en) | 2020-09-18 | 2020-09-18 | Anti-tripping control circuit of SF6 full-insulation totally-enclosed looped network switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022063906.1U CN213602192U (en) | 2020-09-18 | 2020-09-18 | Anti-tripping control circuit of SF6 full-insulation totally-enclosed looped network switch cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN213602192U true CN213602192U (en) | 2021-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022063906.1U Active CN213602192U (en) | 2020-09-18 | 2020-09-18 | Anti-tripping control circuit of SF6 full-insulation totally-enclosed looped network switch cabinet |
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| Country | Link |
|---|---|
| CN (1) | CN213602192U (en) |
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- 2020-09-18 CN CN202022063906.1U patent/CN213602192U/en active Active
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