CN211377564U - Circuit breaker capable of automatically reclosing - Google Patents
Circuit breaker capable of automatically reclosing Download PDFInfo
- Publication number
- CN211377564U CN211377564U CN201922074873.8U CN201922074873U CN211377564U CN 211377564 U CN211377564 U CN 211377564U CN 201922074873 U CN201922074873 U CN 201922074873U CN 211377564 U CN211377564 U CN 211377564U
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- controllable switch
- signal
- circuit
- short
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Keying Circuit Devices (AREA)
Abstract
The embodiment of the utility model provides a but circuit breaker of autoeclosing, this circuit breaker includes: circuit breaker body, controller, shunt release and closed electro-magnet, the controller includes: the output end of the first controllable switch is connected to a circuit between the shunt release and the power supply; the output end of the second controllable switch is connected to a circuit between the closed electromagnet and the power supply; the signal receiving and transmitting equipment is used for receiving a first switching trigger signal when a short-time self-eliminating fault occurs, transmitting the first switching trigger signal to the first controllable switch, and triggering the first controllable switch to be closed, so that the shunt release is connected with the power supply, and the circuit breaker is switched off; and the electromagnetic switch is also used for receiving a switch-on trigger signal after a preset time interval of the short-time self-elimination type fault occurs, sending the switch-on trigger signal to the second controllable switch, triggering the second controllable switch to be closed, so that the closed electromagnet is switched on the power supply, and the circuit breaker automatically recloses.
Description
Technical Field
The utility model relates to the field of electric power technology, in particular to circuit breaker that can reclose automatically.
Background
The operation experience of the power system shows that most of the faults of the power grid line are transient faults or current overload which can be automatically eliminated in a short time, when the breaker is opened, the faults can be automatically eliminated in a short time, the line can be quickly recovered to be normal, and if the breaker is reclosed, the normal power supply can be recovered. In addition, a small number of permanent faults, such as short-circuit faults and disconnection faults of the line, cannot be eliminated automatically in a short time, and must be maintained by operation and maintenance personnel. Based on the above characteristics of line faults, the power grid basically adopts an automatic reclosing device, and after the fault trips, the breaker can be automatically reclosed without manual operation of operation and maintenance personnel on site. For short-time self-elimination type faults, reclosing can be successful; for a permanent fault, reclosing will fail. Reclosing has advantages and disadvantages for the system, on one hand, the continuity, stability and reliability of power supply are improved, the power failure loss of the line is reduced, and the workload of operators is reduced; on the other hand, when the fault is superposed on the permanent fault, the system is impacted by the short-circuit current again, and the oscillation of the power system can be caused, so that the system is unstable, and the consequence is serious.
According to the conventional automatic reclosing circuit breaker solution, after an automatic reclosing device detects a fault, the fault cannot be judged and distinguished to be self-eliminated or permanent in a short time, the circuit breaker is uniformly driven to be opened through controlling a magnetic flux converter, meanwhile, a fault reset button of the circuit breaker pops up, the fault reset button needs to be reset before reclosing, a remote electrical reset mechanism needs to be installed on the circuit breaker, so that the fault reset button is automatically reset, and then the action of a closing electromagnet can be controlled to complete automatic reclosing operation. The remote electrical reset mechanism is not a universal accessory of the circuit breaker, needs to be matched with an actuating mechanism of the circuit breaker body, cannot be modularized, and most of the remote electrical reset mechanism needs to be designed by manufacturers by themselves, so that the cost is increased, and the occupied space is occupied. The remote electrical reset mechanism requires electrical control, increasing the number of wires and power consumption. The conventional solution is not in line with the development directions of circuit breaker miniaturization, low power consumption, modularization, wiring simplification and low cost.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a but circuit breaker of autoeclosing to solve among the prior art because set up the wiring that long-range electric reset mechanism leads to complicated, occupation space, consumption are big, problem with high costs. This but circuit breaker of autoreclosing includes:
a circuit breaker body, a controller, a shunt release and a closing electromagnet, wherein,
the controller, the shunt release and the closing electromagnet are arranged in the circuit breaker body;
the controller includes:
the output end of the first controllable switch is connected to a circuit between the shunt release and a power supply;
a second controllable switch, an output of the second controllable switch being connected to a circuit between the closing electromagnet and the power supply;
the signal transceiving equipment is connected with the input end of the first controllable switch and the input end of the second controllable switch, and is used for receiving a first brake triggering signal when a short-time self-eliminating fault occurs, sending the first brake triggering signal to the first controllable switch, and triggering the first controllable switch to be closed so that the shunt release is connected with the power supply and a circuit breaker is switched off; and the automatic switching-on device is also used for receiving a switching-on trigger signal after the preset time length of the short-time self-eliminating type fault occurs, sending the switching-on trigger signal to the second controllable switch, triggering the second controllable switch to be switched on, so that the switching-on electromagnet is switched on the power supply, and the circuit breaker automatically switches on again.
In the embodiment of the present invention, it is proposed to set a first controllable switch on the circuit between the shunt release and the power supply, a second controllable switch on the circuit between the closed electromagnet and the power supply, and then receive a trigger signal through the signal transceiver to trigger the first controllable switch or the second controllable switch to close, for example, when a short-time self-elimination fault occurs, the first controllable switch is triggered to close through the trigger signal, so that the shunt release acts rather than the magnetic flux converter, and finally the circuit breaker is opened, so that the fault reset button of the circuit breaker will not pop up, and no reset operation is needed before the reclosing is executed; after a certain delay time after the circuit breaker is opened, the second controllable switch can be triggered to be closed through the trigger signal, so that the closing electromagnet acts to realize the automatic reclosing of the circuit breaker. Above-mentioned but circuit breaker of reclose need not modify original circuit breaker structure in this application, based on original circuit breaker structure, upgrades the transformation to the controller, increases promptly under the circumstances of first controllable switch, second controllable switch and signal transceiver equipment, can realize the separating brake and the reclose of circuit breaker to the short-time self-elimination type trouble condition. Compared with the prior art, need not to set up long-range electrical reset mechanism, avoided because the defect that sets up long-range electrical reset mechanism and lead to, but the circuit breaker of automatic reclosing of this application has advantages such as miniaturization, low-power consumption, the simplification of wiring, low cost.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural diagram of a circuit breaker capable of automatically reclosing according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a main circuit principle of a preferred controller according to an embodiment of the present invention;
fig. 3 is a flowchart of the operation of the circuit breaker capable of automatically reclosing according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
The embodiment of the utility model provides an in, but provide a circuit breaker of autoeclosing, as shown in fig. 1, this circuit breaker of autoeclosing includes: a circuit breaker body 1, a controller 2, a shunt release 3 and a closing electromagnet 4, wherein,
the controller 2, the shunt release 3 and the closing electromagnet 4 are arranged in the circuit breaker body 1 (the part shown by a dotted line frame in fig. 1 is the circuit breaker body 1);
the controller 2 includes:
a first controllable switch 201, an output end of the first controllable switch 201 is connected to a circuit between the shunt release 3 and a power supply;
a second controllable switch 202, the output of which is connected to the circuit between the closing electromagnet 4 and the power supply;
a signal transceiver (not shown in fig. 1) connected to an input terminal of the first controllable switch 201 and an input terminal of the second controllable switch 202, the signal transceiver being configured to receive a first tripping trigger signal when a short-time self-eliminating fault occurs, send the first tripping trigger signal to the first controllable switch 201, trigger the first controllable switch 201 to close, so that the shunt release 3 switches on the power supply, that is, the shunt release 3 acts, and thus, a circuit breaker is tripped; the automatic reclosing device is also used for receiving a closing trigger signal after a preset time length of a short-time self-eliminating fault occurs, sending the closing trigger signal to the second controllable switch 202, triggering the second controllable switch 202 to be closed, enabling the closing electromagnet 4 to be connected with the power supply, namely closing the electromagnet 4 to act, and then realizing automatic reclosing of the circuit breaker.
As shown in fig. 1, in the embodiment of the present invention, a first controllable switch is disposed on a circuit between the shunt release and the power supply, a second controllable switch is disposed on a circuit between the closed electromagnet and the power supply, and a trigger signal is received by the signal transceiver to trigger the first controllable switch or the second controllable switch to close, for example, when a short-time self-eliminating fault occurs, the first controllable switch is triggered to close by the trigger signal, so that the shunt release acts instead of the magnetic flux converter, and finally the circuit breaker is opened, so that a fault reset button of the circuit breaker does not pop up, and a reset operation is not required before the reclosing is performed; after a certain delay time after the circuit breaker is opened, the second controllable switch can be triggered to be closed through the trigger signal, so that the closing electromagnet acts to realize the automatic reclosing of the circuit breaker. Above-mentioned but circuit breaker of reclose need not modify original circuit breaker structure in this application, based on original circuit breaker structure, upgrades the transformation to the controller, increases promptly under the circumstances of first controllable switch, second controllable switch and signal transceiver equipment, can realize the separating brake and the reclose of circuit breaker to the short-time self-elimination type trouble condition. Compared with the prior art, need not to set up long-range electrical reset mechanism, avoided because the defect that sets up long-range electrical reset mechanism and lead to, but the circuit breaker of automatic reclosing of this application has advantages such as miniaturization, low-power consumption, the simplification of wiring, low cost.
In a specific implementation, the first controllable switch 201 and the second controllable switch 202 may be contactless electronic switches (e.g., transistors, optocouplers, etc.) or contact mechanical switches (e.g., relays), and preferably, the first controllable switch 201 and the second controllable switch 202 are relays.
In specific implementation, the arrangement mode of the shunt release 3 and the closing electromagnet 4 in the circuit breaker body 1 is not specifically limited in this application, and specifically, a circuit breaker provided with the shunt release 3 and the closing electromagnet 4 in the prior art may be adopted; the circuit breaker of the automatic reclosing lock of this application just reforms transform the controller on the foundation structure of current circuit breaker, has increased first controllable switch, second controllable switch and signal transceiver equipment promptly, need not to change the original structure of circuit breaker, can realize the automatic separating brake and the automatic reclosing lock of circuit breaker to the self-elimination class trouble condition in short-term under the condition that does not set up long-range electrical reset mechanism.
During specific implementation, in order to realize the automatic opening of the circuit breaker aiming at the permanent fault, in this embodiment, the signal transceiver device is further connected with a magnetic flux converter in the circuit breaker, the signal transceiver device is further used for receiving a second opening trigger signal when the permanent fault occurs, and the second opening trigger signal is sent to the magnetic flux converter to drive the magnetic flux converter to act, so that the circuit breaker is quickly opened, a fault reset button of the circuit breaker pops out, and at the moment, the circuit breaker can be closed again after the fault reset button is manually reset.
In specific implementation, the signal transceiver may be composed of a plurality of transistor switch circuits, a fet switch circuit, an optocoupler switch circuit, and the like, and preferably, the signal transceiver is composed of two transistor switch circuits and one power fet switch circuit.
In an embodiment, the first opening trigger signal, the second opening trigger signal, and the closing trigger signal may be different types of pulse signals, for example, high-level or low-level pulse signals.
In specific implementation, in order to implement automatic opening of the circuit breaker for different fault types, the signal transceiver device in the controller 2 may directly receive the first opening trigger signal, the second opening trigger signal, and the closing trigger signal sent by the external device of the circuit breaker, for example, the external device of the circuit breaker may be a communication device or a remote control device, and the signal transceiver device directly forwards the first opening trigger signal, the second opening trigger signal, and the closing trigger signal to the first controllable switch or the second controllable switch after receiving the first opening trigger signal, the second opening trigger signal, and the closing trigger signal; in addition, the controller 2 may also distinguish the fault type according to the current magnitude of the circuit breaker, and then output the first switching trigger signal or the second switching trigger signal, for example, in this embodiment, the controller 2 further includes:
a current detection device (not shown in fig. 1, which may be a current sensor) for detecting a current value of the circuit breaker.
A first comparator (not shown in fig. 1), connected to the signal transceiver, and configured to input a current value detected by the current detection device and a preset short-circuit protection current value, compare the current value with the preset short-circuit protection current value, and output the first shunt trigger signal under the condition of a short-circuit self-elimination fault when the current value of the circuit breaker is smaller than the preset short-circuit protection current value (specifically, when the current value of the circuit breaker is smaller than the preset short-circuit protection current value, the first comparator outputs an electrical signal or a pulse signal indicating that the comparison result is that the current value is smaller than the preset short-circuit protection current value, where the electrical signal or the pulse signal is regarded as the first shunt trigger signal) to the signal transceiver; when the current value of the circuit breaker is greater than or equal to the preset short-circuit protection current value (namely, a permanent fault occurs at the moment), the second shunt tripping trigger signal under the condition of the permanent fault is output (specifically, when the current value of the circuit breaker is greater than or equal to the preset short-circuit protection current value, the first comparator outputs an electric signal or a pulse signal representing that the comparison result is the current value is greater than or equal to the preset short-circuit protection current value, and the electric signal or the pulse signal is regarded as the second shunt tripping trigger signal) to the signal transceiving equipment.
In specific implementation, in order to avoid the breaker repeatedly performing switching-on with a fault in a short time, in this embodiment, the controller 2 further includes:
the counter (not shown in fig. 1) is connected with the signal transceiver, and is used for counting the times of receiving the closing trigger signal by the signal transceiver and timing the used time;
a second comparator (not shown in fig. 1) connected to the counter, for inputting the number of times and a preset number of times, comparing the number of times with the preset number of times, and outputting a first pulse signal when the number of times is less than or equal to the preset number of times;
a third comparator (not shown in fig. 1) connected to the counter, for inputting the time length and a preset time length, comparing the time length with the preset time length, and outputting a second pulse signal when the time length is equal to the preset time length;
and the trigger is connected with the second comparator, the third comparator and the signal transceiver and used for outputting the switching-on trigger signal to the signal transceiver after receiving the first pulse signal and the second pulse signal, and the automatic reclosing function is locked if the trigger does not receive the first pulse signal and/or the second pulse signal.
Specifically, when the short-time self-elimination type fault occurs to the protected line, the controller 2 triggers the first controllable switch to be closed, so that the shunt release 3 acts to further open the breaker, after a preset time interval, the controller 2 triggers the second controllable switch to be closed, so that the closed electromagnet 4 acts to further close the breaker automatically, the reclosing can be realized without personnel going to the field for overhauling when the short-time self-elimination type fault occurs, and the preset time length can be determined according to specific conditions. After the circuit breaker automatically recloses, if a short-time self-eliminating fault still exists, the controller 2 triggers the first controllable switch to be closed, so that the shunt release 3 acts to further open the circuit breaker again, and after a preset time interval, the controller 2 triggers the second controllable switch to be closed, so that the closing electromagnet 4 acts to further automatically reclose the circuit breaker. When the times of the automatic reclosing of the circuit breaker reach the preset times and the duration reaches the preset duration, if a fault still exists, the trigger in the controller 2 does not output a closing trigger signal any more, so that the automatic reclosing function is locked, and the circuit breaker is not allowed to automatically reclose again.
In specific implementation, the preset times and the preset time length can be determined according to specific conditions, the preset times is a set value of times that the circuit breaker can be automatically reclosed, the preset time length is delay time from the opening of the circuit breaker to the automatic reclosing, and different times and delay time allowing the automatic reclosing can be set according to different fault types.
In specific implementation, the short-time self-elimination type fault includes any one or any combination of the following: instantaneous loss of voltage of the power grid line, instantaneous undervoltage of the power grid line, instantaneous overvoltage of the power grid line and short-time current overload faults. The permanent fault comprises any one or any combination of the following: short circuit faults and disconnection faults of the power grid lines.
In specific implementation, in order to realize the automatic reclosing function, the power supplies of the controller 2, the shunt release 3 and the closing electromagnet 4 can be still maintained after the breaker is opened, and in this embodiment, the power supply is connected with the upper inlet wire inlet end of the breaker.
In specific implementation, the counter, the first comparator, the second comparator, the third comparator, the trigger, the current detection device, and the like in the controller 2 may be implemented by a digital/analog unit circuit composed of discrete components, or may be implemented by a large-scale integrated circuit, such as a microcontroller (MCU, a single chip microcomputer), an Application Specific Integrated Circuit (ASIC), a Microprocessor (MPU), and the like, and preferably, the main function of the controller 2 is implemented by the single chip microcomputer.
In specific implementation, fig. 2 is a schematic diagram of a main circuit principle of a preferred controller according to an embodiment of the present invention. The main functions of the controller 2 are implemented by a single-chip microcomputer U1, preferably of the model STM32F103C8T 6. The single chip microcomputer can realize a current measuring function, a voltage measuring function, a communication function, a man-machine interaction function, a counter function, a first comparator function, a second comparator function and a third comparator function by matching with necessary peripheral circuits (such as a power supply circuit, a power grid signal sampling circuit and the like, which are not shown in the figure), and provides a trigger signal for the signal receiving and transmitting equipment. The signal transceiver consists of three parts of switch circuits: the resistor R1, the resistor R2 and the transistor Q1 form signal transceiving equipment of a first controllable switch, the relay K1 is the first controllable switch, the signal transceiving equipment receives a first shunt tripping trigger signal and is used for controlling the first controllable switch, and the first controllable switch is closed to enable the shunt release to act to achieve circuit breaker tripping; the resistor R3, the resistor R4 and the transistor Q2 form signal receiving and transmitting equipment of a second controllable switch, the relay K2 is the second controllable switch, the signal receiving and transmitting equipment receives a closing trigger signal to control the second controllable switch, and the second controllable switch is closed to enable the closing electromagnet to act to realize the closing of the circuit breaker; the resistor R5, the resistor R6 and the field effect transistor Q3 form signal receiving and transmitting equipment of the magnetic flux converter, and the signal receiving and transmitting equipment receives a second opening triggering signal and is used for controlling the action of the magnetic flux converter to realize quick opening of the circuit breaker. Parameters such as a short-circuit current protection value, the number of times of allowing automatic reclosing, delay time and the like can be set through communication of the communication interface circuit, and can also be set locally through a human-computer interaction circuit (mainly comprising a display screen and a key).
In specific implementation, as shown in fig. 3, the operation flow of the circuit breaker capable of automatically reclosing is as follows:
when the controller 2 detects a fault, the fault type of the fault is determined according to the magnitude of a fault current value, if the fault current value is greater than or equal to a preset short-circuit protection current value, the fault is determined to be a permanent fault, a magnetic flux converter is driven to act through short delay or instant time, the circuit breaker is ensured to be rapidly switched off, meanwhile, a fault reset button pops up, and the circuit breaker can be manually reset and manually re-switched on after manual maintenance and fault removal are needed; if the fault current value is smaller than the preset short-circuit protection current value, the fault can be determined to be a short-time self-elimination fault, the fault can be a current overload fault, or a voltage fault, such as voltage loss, undervoltage, overvoltage and the like, or other faults which can be automatically eliminated in a short time without manual intervention, the requirement of the faults on the opening speed of the circuit breaker is not high, the controller 2 can trigger the first controllable switch to be closed, so that the opening of the circuit breaker is completed by the action of the opening release tripper 3, the second controllable switch is triggered to be closed by the controller 2 after the opening is completed by the action of the closing electromagnet 4, the automatic reclosing of the circuit breaker is completed, and the automatic reclosing of the fault is completed if the circuit breaker can normally work after the reclosing; if the fault can still be detected even if the normal work can not be carried out, the fault type judgment is continuously carried out, and manual reclosing is still adopted for the permanent fault; for a short-time self-elimination type fault, after a delay time interval t2 is passed after switching-off, the circuit breaker executes second automatic reclosing, if the circuit breaker cannot work normally, the fault is still detected and the circuit breaker is switched off, the controller 2 locks the automatic reclosing function, the automatic reclosing function is not tried any more, and the controller 2 can be manually operated to unlock the automatic reclosing function after manual maintenance and fault elimination.
In the embodiment of the present invention, it is proposed to set a first controllable switch on the circuit between the shunt release and the power supply, a second controllable switch on the circuit between the closed electromagnet and the power supply, and then receive a trigger signal through the signal transceiver to trigger the first controllable switch or the second controllable switch to close, for example, when a short-time self-elimination fault occurs, the first controllable switch is triggered to close through the trigger signal, so that the shunt release acts rather than the magnetic flux converter, and finally the circuit breaker is opened, so that the fault reset button of the circuit breaker will not pop up, and no reset operation is needed before the reclosing is executed; after a certain delay time after the circuit breaker is opened, the second controllable switch can be triggered to be closed through the triggering signal, so that the closed electromagnet acts to realize the automatic reclosing of the circuit breaker. Above-mentioned but circuit breaker of reclose need not modify original circuit breaker structure in this application, based on original circuit breaker structure, upgrades the transformation to the controller, increases promptly under the circumstances of first controllable switch, second controllable switch and signal transceiver equipment, can realize the separating brake and the reclose of circuit breaker to the short-time self-elimination type trouble condition. Compared with the prior art, need not to set up long-range electrical reset mechanism, avoided because the defect that sets up long-range electrical reset mechanism and lead to, but the circuit breaker of automatic reclosing of this application has advantages such as miniaturization, low-power consumption, the simplification of wiring, low cost.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A circuit breaker capable of automatically reclosing, comprising: a circuit breaker body, a controller, a shunt release and a closing electromagnet, wherein,
the controller, the shunt release and the closing electromagnet are arranged in the circuit breaker body;
the controller includes:
the output end of the first controllable switch is connected to a circuit between the shunt release and a power supply;
a second controllable switch, an output of the second controllable switch being connected to a circuit between the closing electromagnet and the power supply;
the signal transceiving equipment is connected with the input end of the first controllable switch and the input end of the second controllable switch, and is used for receiving a first brake triggering signal when a short-time self-eliminating fault occurs, sending the first brake triggering signal to the first controllable switch, and triggering the first controllable switch to be closed so that the shunt release is connected with the power supply and a circuit breaker is switched off; and the automatic switching-on device is also used for receiving a switching-on trigger signal after the preset time length of the short-time self-eliminating type fault occurs, sending the switching-on trigger signal to the second controllable switch, triggering the second controllable switch to be switched on, so that the switching-on electromagnet is switched on the power supply, and the circuit breaker automatically switches on again.
2. The auto-recloseable circuit breaker of claim 1,
the signal transceiver is connected with a magnetic flux converter in the circuit breaker, and is also used for receiving a second switching-off trigger signal when a permanent fault occurs, sending the second switching-off trigger signal to the magnetic flux converter, driving the magnetic flux converter to act, switching off the circuit breaker and popping out a fault reset button of the circuit breaker.
3. The recloseable circuit breaker of claim 2, wherein the controller further comprises:
a current detection device for detecting a current value of the circuit breaker;
the first comparator is connected with the signal transceiving equipment and is used for inputting a current value detected by the current detection equipment and a preset short-circuit protection current value, comparing the current value with the preset short-circuit protection current value, and outputting the first switching trigger signal to the signal transceiving equipment when the current value is smaller than the preset short-circuit protection current value; and when the current value is larger than or equal to the preset short-circuit protection current value, outputting the second shunt triggering signal to the signal transceiving equipment.
4. The auto-recloseable circuit breaker of any of claims 1-3, wherein the controller further comprises:
the counter is used for counting the times of receiving the closing trigger signal by the signal receiving and transmitting equipment and timing the used time;
the second comparator is connected with the counter and used for inputting the times and preset times, comparing the times with the preset times and outputting a first pulse signal when the times are less than or equal to the preset times;
the third comparator is connected with the counter and used for inputting the time length and the preset time length, comparing the time length with the preset time length, and outputting a second pulse signal when the time length is equal to the preset time length;
and the trigger is connected with the second comparator, the third comparator and the signal transceiving equipment and used for outputting the switching-on trigger signal to the signal transceiving equipment after receiving the first pulse signal and the second pulse signal.
5. Auto-recloseable circuit breaker according to any of claims 1 to 3, characterized in that said first controllable switch is a contactless electronic switch or a mechanical switch with contacts.
6. Auto-recloseable circuit breaker according to any of claims 1 to 3, characterized in that said second controllable switch is a contactless electronic switch or a mechanical switch with contacts.
7. The auto-recloseable circuit breaker of any of claims 1-3, wherein the short-time self-clearing type fault comprises any one or any combination of: instantaneous loss of voltage of the power grid line, instantaneous undervoltage of the power grid line, instantaneous overvoltage of the power grid line and short-time current overload faults.
8. The auto-recloseable circuit breaker of any of claims 2-3, wherein the permanent fault comprises any one or any combination of: short circuit faults and disconnection faults of the power grid lines.
9. The auto-recloseable circuit breaker according to any of claims 1-3, wherein said power source is connected to an upper inlet line terminal of said circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922074873.8U CN211377564U (en) | 2019-11-27 | 2019-11-27 | Circuit breaker capable of automatically reclosing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922074873.8U CN211377564U (en) | 2019-11-27 | 2019-11-27 | Circuit breaker capable of automatically reclosing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211377564U true CN211377564U (en) | 2020-08-28 |
Family
ID=72153041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922074873.8U Active CN211377564U (en) | 2019-11-27 | 2019-11-27 | Circuit breaker capable of automatically reclosing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211377564U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542823A (en) * | 2020-11-05 | 2021-03-23 | 上海合凯电气科技有限公司 | Reclosing control method and system and reclosing control equipment |
| CN113097967A (en) * | 2021-03-30 | 2021-07-09 | 金昌平 | Method for automatically locking reclosure to expand terminal adaptation range according to operation condition |
| CN114597105A (en) * | 2022-03-17 | 2022-06-07 | 德力西电气有限公司 | Circuit breaker and control method thereof |
-
2019
- 2019-11-27 CN CN201922074873.8U patent/CN211377564U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542823A (en) * | 2020-11-05 | 2021-03-23 | 上海合凯电气科技有限公司 | Reclosing control method and system and reclosing control equipment |
| CN112542823B (en) * | 2020-11-05 | 2023-03-10 | 上海合凯电气科技有限公司 | Reclosing control method and system and reclosing control equipment |
| CN113097967A (en) * | 2021-03-30 | 2021-07-09 | 金昌平 | Method for automatically locking reclosure to expand terminal adaptation range according to operation condition |
| CN114597105A (en) * | 2022-03-17 | 2022-06-07 | 德力西电气有限公司 | Circuit breaker and control method thereof |
| CN114597105B (en) * | 2022-03-17 | 2024-06-11 | 德力西电气有限公司 | Circuit breaker and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211377564U (en) | Circuit breaker capable of automatically reclosing | |
| WO2020177391A1 (en) | Circuit breaker apparatus and electric energy meter apparatus | |
| CN205427552U (en) | High -voltage switch intelligent control ware | |
| CN101325327B (en) | Intelligent load-limiting breaker with auto-reclosing | |
| CN201877307U (en) | Mechanism for automatically switching operating and test positions of circuit breaker | |
| WO2024041676A1 (en) | Monitoring method for switching-off/switching-on state of isolating switch | |
| EP3896811B1 (en) | Contactor control device and power supply system | |
| CN220066877U (en) | Tripping and closing protection circuit of circuit breaker | |
| CN202102988U (en) | Intelligent miniature circuit breaker with bus system | |
| CN101055814B (en) | High voltage vacuum breaker | |
| CN218161771U (en) | Automatic reclosing device and circuit breaker | |
| CN202455038U (en) | Main circuit earth leakage lockout device for coal mine explosion-proof high-voltage frequency converter | |
| CN210120060U (en) | External circuit breaker structure of electric energy meter with wireless communication | |
| EP1146645B1 (en) | A contactless intellectual switch | |
| CN214956721U (en) | Solid-state direct current breaker | |
| CN202103400U (en) | Electronic release for intelligent MCCB | |
| CN115132544A (en) | Solid-state direct-current circuit breaker and control method thereof | |
| CN212784893U (en) | Remote charge control automatic closing relay and system | |
| WO2014008857A1 (en) | Protection module for control and protective switching device | |
| CN114498549A (en) | Control circuit and method for circuit breaker and electronic equipment | |
| CN210110667U (en) | Handle anti-misoperation device of automatic reclosing circuit breaker | |
| CN204760332U (en) | Circuit breaker operating device controlgear and control box thereof | |
| CN202102989U (en) | Control system for accessory module of miniature circuit breaker | |
| CN211629854U (en) | Circuit breaker protection trip circuit | |
| US6728087B1 (en) | Method and apparatus for remotely actuating a circuit protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |