CN218161771U - Automatic reclosing device and circuit breaker - Google Patents
Automatic reclosing device and circuit breaker Download PDFInfo
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- CN218161771U CN218161771U CN202222007538.8U CN202222007538U CN218161771U CN 218161771 U CN218161771 U CN 218161771U CN 202222007538 U CN202222007538 U CN 202222007538U CN 218161771 U CN218161771 U CN 218161771U
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Abstract
The application discloses automatic reclosing device and circuit breaker has realized the safe combined floodgate of circuit breaker. This automatic reclosing device includes: the circuit fault detection device comprises a circuit fault detection module, a main control unit, a breaker opening mechanism and a breaker closing mechanism; the circuit fault detection module is connected with a circuit where the circuit breaker is located and used for sampling circuit operation parameters as a basis for judging whether the circuit is in fault or not; the first input end of the main control unit is connected with the output end of the circuit fault detection module; the second input end of the main control unit is used for receiving a forced closing signal; the first output end of the main control unit is connected with the breaker opening mechanism; and the second output end of the main control unit is connected with the circuit breaker closing mechanism.
Description
Technical Field
The utility model relates to an electrical technology field, more specifically say, relate to an automatic reclosing device and circuit breaker.
Background
Circuit breakers (e.g., conventional circuit breakers) are common circuit protection devices, and are automatically tripped under the condition of circuit faults (e.g., faults such as undervoltage, voltage loss, short circuit, overload, and the like), so as to achieve the purpose of circuit protection. In addition, the circuit breaker should be able to receive and respond to a forced switching on/off command (e.g., a switching on/off command issued on site by manually toggling a switching on/off button on the circuit breaker, or a remote switching on/off command issued by a remote control room) for ease of line maintenance, power scheduling, etc.
However, if the circuit breaker receives a forced closing command in the event of a circuit fault, the circuit breaker is very likely to cause electric shock of a maintainer and damage to lower-level electrical equipment. For example, if a circuit breaker is opened by an automatic control system of the circuit breaker due to the detection of a short circuit, a worker is performing line maintenance on site, and the circuit breaker receives a forced closing command, the circuit breaker will be forcibly closed under the condition of circuit breaking, which may cause the electric shock of the maintainer and the short circuit of the next electrical equipment to be burned.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an automatic reclosing device and circuit breaker to realize circuit breaker safety combined floodgate.
An automatic reclosing device comprising: the circuit fault detection device comprises a circuit fault detection module, a main control unit, a breaker opening mechanism and a breaker closing mechanism;
the circuit fault detection module is connected with a circuit where the circuit breaker is located and used for sampling circuit operation parameters as a basis for judging whether the circuit has a fault or not;
the first input end of the main control unit is connected with the output end of the circuit fault detection module;
the second input end of the main control unit is used for receiving a forced closing signal;
the first output end of the main control unit is connected with the breaker opening mechanism;
and the second output end of the main control unit is connected with the circuit breaker closing mechanism.
Optionally, the forced closing signal is a closing command that is sent locally by manually toggling a closing button on the circuit breaker, or a remote closing command that is sent by a remote control room.
Optionally, the automatic reclosing device further includes: an opening and closing state output module; and the switching-on/off state output module is used for outputting the current switching-on/off state of the circuit breaker under the control of the main control unit.
Optionally, the switching-on/off state output module includes a remote communication module, and is in communication connection with a remote control room capable of sending a forced switching-on/off command.
Optionally, the switching-on/off state output module further includes: and the status indicator lamp is arranged on the automatic reclosing device.
Optionally, the automatic reclosing device further includes: a first delay module; and a first output end of the main control unit is connected to the circuit breaker opening mechanism through the first time delay module.
Optionally, the automatic reclosing device further includes: a second delay module; and a second output end of the main control unit is connected to the circuit breaker closing mechanism through the second time delay module.
Optionally, the circuit fault detection module includes a voltage detection function module.
A circuit breaker, wherein, dispose any kind of automatic reclosing device as disclosed above on the circuit breaker.
Optionally, the circuit breaker is a universal circuit breaker.
According to the above technical scheme, the utility model discloses to force the combined floodgate order to incorporate into the auto-reclosing device, after forcing the combined floodgate order to send, the auto-reclosing device carries out the integrated analysis according to forcing combined floodgate order and circuit fault detection result, decides again whether to carry out the action of circuit breaker combined floodgate. The utility model discloses avoided like among the prior art, when forcing the combined floodgate order to send the back, no matter whether circuit failure all forces the combined floodgate, thereby the utility model discloses a security that the circuit breaker closed a floodgate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that 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 according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of an automatic reclosing device disclosed in an embodiment of the present invention;
fig. 2 is a schematic structural view of another automatic reclosing device disclosed in the embodiment of the present invention;
fig. 3a is a schematic structural diagram of an opening/closing state output module in an automatic reclosing device according to an embodiment of the present invention, which is a remote communication module;
fig. 3b is a schematic structural diagram of an opening/closing state output module in the automatic reclosing device disclosed in the embodiment of the present invention, when the remote communication module and the state indicator lamp are adopted;
fig. 3c is a schematic structural diagram of an opening/closing state output module in the automatic reclosing device disclosed in the embodiment of the present invention when a state indicator lamp is used;
fig. 4 is a schematic structural view of another automatic reclosing device disclosed in the embodiment of the present invention;
fig. 5 is a schematic structural view of another automatic reclosing device disclosed in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the embodiment of the utility model discloses an automatic reclosing device, include: the circuit fault detection device comprises a circuit fault detection module 1, a main control unit 2, a breaker opening mechanism 3 and a breaker closing mechanism 4;
the circuit fault detection module 1 is connected with a circuit (such as a public power grid) where the circuit breaker is located, and is used for sampling circuit operation parameters as a basis for judging whether the circuit fault exists (such as whether undervoltage exists or not, whether voltage is lost or not, whether short circuit exists or not, whether overload exists or not);
the first input end of the main control unit 2 is connected with the output end of the circuit fault detection module 1;
a second input end of the main control unit 2 is used for receiving a forced closing signal; the forced closing signal is, for example, a closing command which is sent locally by manually shifting a closing button on the circuit breaker, or may also be a remote closing command which is sent by a remote control room, and is not limited;
the first output end of the main control unit 2 is connected with a breaker opening mechanism 5; the circuit breaker opening mechanism 5 is a mechanism for driving the circuit breaker to open under the control of the main control unit 2, and is, for example, a release in the circuit breaker;
a second output end of the main control unit 2 is connected with a breaker closing mechanism 6; the circuit breaker closing mechanism 6 is a mechanism for driving the circuit breaker to close under the control of the main control unit 2, and is, for example, a closing electromagnet in the circuit breaker.
As can be seen from the above description, the embodiment of the present invention incorporates the forced closing command into the automatic reclosing device. When the forced switching-on command is not sent out, the main control unit 2 analyzes and makes logic judgment according to the output signal of the circuit fault detection module 1 to control the switching-on and switching-off of the circuit breaker, and the method specifically comprises the following steps: in a closing state of the circuit breaker, if the circuit fault detection module 1 indicates a circuit fault, the main control unit 2 sends a trigger signal to the circuit breaker opening mechanism 5 through the first output end, so that the circuit breaker is automatically opened; when the circuit fault detection module 1 indicates that the circuit is recovered to be normal, the main control unit 2 releases the trigger of the breaker opening mechanism 5 and starts to send a trigger signal to the breaker closing mechanism 6 through the second output end, so that the breaker is automatically closed.
After the forced closing command is sent out, the main control unit 2 performs comprehensive analysis and makes logic judgment according to the forced closing command and the output signal of the circuit fault detection module 1 to control the opening and closing of the circuit breaker, and the method specifically comprises the following steps: in the opening state of the circuit breaker, if the circuit fault detection module 1 indicates that the circuit is normal and the main control unit 2 receives a forced closing command, the main control unit 2 releases the trigger on the opening mechanism 5 of the circuit breaker and starts to send a trigger signal to the closing mechanism 6 of the circuit breaker through a second output end, so that the circuit breaker is automatically closed; in the opening state of the circuit breaker, if the circuit fault detection module 1 indicates a circuit fault and the main control unit 2 receives a forced closing command, the main control unit 2 makes the circuit breaker continuously maintain the opening state.
To sum up, the embodiment of the utility model provides a to force the combined floodgate order to merge into automatic reclosing device, after forcing the combined floodgate order to send, automatic reclosing device carries out the integrated analysis according to forcing combined floodgate order and circuit fault testing result, decides again whether to carry out circuit breaker combined floodgate action (based on the whole framework of the automatic reclosing device that the aforesaid given, follows the principle that circuit breaker safety closed a floodgate, the difficult setting of 2 internal control logics of main control unit). The embodiment of the utility model provides an avoided like among the prior art, when forcing the combined floodgate order to send the back, no matter circuit failure is all forced to close a floodgate, thereby the embodiment of the utility model provides a circuit breaker combined floodgate's security has been realized.
Optionally, referring to fig. 2, the automatic reclosing device further includes: and the switching-on/off state output module 5 is used for outputting the current switching-on/off state of the circuit breaker under the control of the main control unit 2.
In one embodiment, the switching-on/off state output module 5 includes a remote communication module, which is connected to a remote control room capable of sending out a forced switching-on/off command, and one of functions of the remote control room is to feed back the current switching-on/off state of the circuit breaker to the remote control room after the main control unit 2 receives and responds to the forced switching-on command sent out by the remote control room, as shown in fig. 3 a. Further, as shown in fig. 3b, the switching-on/off state output module 5 may further include a state indicator installed on the automatic reclosing device, for example, a red light indicates that the circuit breaker is in the switching-off state, and a green light indicates that the circuit breaker is in the switching-on state, in addition to the remote communication module.
In one embodiment, as shown in fig. 3c, when the forced closing command is generated by manually dialing a closing button on the circuit breaker, the switching-off/closing state output module 5 may also only include a state indicator light installed on the automatic reclosing device, for example, a red light indicates that the circuit breaker is in a switching-off state, and a green light indicates that the circuit breaker is in a closing state.
Optionally, based on any one of the automatic reclosing devices disclosed above, referring to fig. 4, the automatic reclosing device further includes: a first delay module 6; a first output end of the main control unit 2 is connected to the circuit breaker opening mechanism 3 through a first time delay module 6.
Specifically, when the main control unit 2 determines to automatically open the brake of the circuit breaker, the main control unit 2 sends an opening instruction through the first output end, and the first delay module 6 delays the opening instruction output by the main control unit 2 for a first preset time T1 and then sends the opening instruction to the circuit breaker opening mechanism 3, so that the circuit breaker is automatically opened after delaying the first preset time T1. The size of the first preset time T1 can be set according to actual needs.
Consider that circuit state avoids taking place the instantaneous fluctuation, this instantaneous fluctuation probably causes the circuit breaker malfunction through circuit fault detection module 1 conduction for main control unit 2, consequently the embodiment of the utility model provides an it carries out delay control to circuit breaker divide-shut brake action to have add first delay module 6. If the instantaneous fluctuation is confirmed, the circuit state is recovered to be normal after the time T1 is delayed, and therefore misoperation of the circuit breaker is avoided.
Optionally, referring to fig. 5, any of the automatic reclosing devices disclosed above further includes: a second delay module 7; and a second output end of the main control unit 2 is connected to the circuit breaker closing mechanism 4 through a second time delay module 7.
Specifically, when the main control unit 2 determines to automatically switch on the circuit breaker, the main control unit 2 sends a switch-on instruction through the second output end, and the second delay module 7 is configured to delay the switch-on instruction output by the main control unit 2 by a second preset time T2 and send the delayed switch-on instruction to the circuit breaker switch-on mechanism 4. The size of the second preset time T2 can be set according to actual needs.
Because main control unit 2 removes earlier the triggering to circuit breaker separating brake mechanism 5, just sends trigger signal to circuit breaker closing mechanism 6 for circuit breaker automatic closing, so when avoiding circuit breaker separating brake mechanism 5 not yet accomplish to reset, the contradiction of action has just been started to circuit breaker closing mechanism 4, the embodiment of the utility model provides an add second delay module 7 and carried out delay control to circuit breaker closing mechanism 4 action.
Optionally, in any of the automatic reclosing devices disclosed above, the circuit fault detection module 1 includes: and the voltage detection functional module is used for detecting the voltage state of the circuit where the circuit breaker is located.
When the circuit voltage is lower than a first threshold value, the circuit is regarded as undervoltage or voltage loss; and when the circuit voltage is not lower than the second threshold value, the circuit voltage is considered to be recovered to be normal. In order to avoid frequent operation of the circuit breaker when the circuit voltage is unstable, the second threshold is generally set to be greater than the first threshold.
Furthermore, the embodiment of the utility model provides a still disclose a circuit breaker, dispose any kind of automatic reclosing device of above-mentioned disclosure on the circuit breaker.
The circuit breaker may be, for example, a universal circuit breaker, but is not limited thereto.
The universal circuit breaker is also called frame type circuit breaker, and is a mechanical switch electric appliance which can connect, bear and break the current under the normal circuit condition, and can also connect, bear and break the current for a certain time under the specified abnormal circuit condition. The universal circuit breaker has higher breaking capacity and thermal stability, so the universal circuit breaker is commonly used in places requiring high breaking capacity and selective protection.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the circuit breaker disclosed by the embodiment, since the circuit breaker corresponds to the automatic reclosing device disclosed by the embodiment, the description is relatively simple, and relevant points can be referred to the partial description of the automatic reclosing device.
The terms "first," "second," and the like in the description and in the claims, and in the drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, identical element in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the embodiments of the invention. Thus, the present embodiments are not intended to be limited to the embodiments shown herein but are to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides an automatic reclosing device which characterized in that includes: the circuit fault detection device comprises a circuit fault detection module, a main control unit, a breaker opening mechanism and a breaker closing mechanism;
the circuit fault detection module is connected with a circuit where the circuit breaker is located and used for sampling circuit operation parameters as a basis for judging whether the circuit has a fault or not;
the first input end of the main control unit is connected with the output end of the circuit fault detection module;
the second input end of the main control unit is used for receiving a forced closing signal;
the first output end of the main control unit is connected with the circuit breaker opening mechanism;
and the second output end of the main control unit is connected with the circuit breaker closing mechanism.
2. The recloser apparatus of claim 1 wherein the forced close signal is a close command issued on-site by manually toggling a close button on a circuit breaker or a remote close command issued from a remote control room.
3. The recloser apparatus according to claim 1 or 2 further comprising: an opening and closing state output module; and the switching-on/off state output module is used for outputting the current switching-on/off state of the circuit breaker under the control of the main control unit.
4. The recloser apparatus of claim 3 wherein the switching off and on status output module comprises a remote communication module communicatively coupled to a remote control room capable of issuing a forced switching off and on command.
5. The recloser apparatus according to claim 4, wherein the switching-off/switching-on state output module further comprises: and the status indicator lamp is arranged on the automatic reclosing device.
6. The recloser apparatus according to claim 1 or 2, further comprising: a first delay module; and a first output end of the main control unit is connected to the circuit breaker opening mechanism through the first time delay module.
7. The recloser apparatus according to claim 1 or 2, further comprising: a second delay module; and a second output end of the main control unit is connected to the circuit breaker closing mechanism through the second time delay module.
8. The recloser apparatus of claims 1 or 2 wherein the circuit fault detection module comprises a voltage detection function module.
9. A circuit breaker, characterized in that the circuit breaker is provided with an automatic reclosing device according to any one of claims 1 to 8.
10. The circuit breaker of claim 9, wherein the circuit breaker is a universal circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222007538.8U CN218161771U (en) | 2022-08-01 | 2022-08-01 | Automatic reclosing device and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222007538.8U CN218161771U (en) | 2022-08-01 | 2022-08-01 | Automatic reclosing device and circuit breaker |
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| Publication Number | Publication Date |
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| CN218161771U true CN218161771U (en) | 2022-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222007538.8U Active CN218161771U (en) | 2022-08-01 | 2022-08-01 | Automatic reclosing device and circuit breaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117872109A (en) * | 2023-12-18 | 2024-04-12 | 广东柏腾物联科技有限公司 | Automatic-verification Internet of things circuit breaker and verification control method thereof |
-
2022
- 2022-08-01 CN CN202222007538.8U patent/CN218161771U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117872109A (en) * | 2023-12-18 | 2024-04-12 | 广东柏腾物联科技有限公司 | Automatic-verification Internet of things circuit breaker and verification control method thereof |
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