CN215580552U - Opening and closing control system based on circuit breaker - Google Patents
Opening and closing control system based on circuit breaker Download PDFInfo
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- CN215580552U CN215580552U CN202122157882.0U CN202122157882U CN215580552U CN 215580552 U CN215580552 U CN 215580552U CN 202122157882 U CN202122157882 U CN 202122157882U CN 215580552 U CN215580552 U CN 215580552U
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Abstract
The utility model discloses a circuit breaker-based opening and closing control system, which comprises a three-phase voltage detection unit, an ammeter signal detection unit, a switching-off circuit unit, a switching-on circuit unit, a circuit breaker and a main control unit, wherein the three-phase voltage detection unit is connected with the ammeter signal detection unit; the voltage detection ends of the three-phase voltage detection unit are respectively and electrically connected with the three-phase wire outlet end of the circuit breaker, and the output end of the three-phase voltage detection unit is respectively and electrically connected with the first signal input end of the main control unit; the ammeter signal detection unit comprises at least one mutual inductance type ammeter, and each mutual inductance type ammeter in the at least one mutual inductance type ammeter is electrically connected with the second signal input end of the main control unit respectively; the first output end of the main control unit is electrically connected with the controlled end of the switching-off circuit unit, and the second output end of the main control unit is electrically connected with the controlled end of the switching-on circuit unit; the utility model can automatically control the opening and closing of the circuit breaker through the state of the circuit breaker and the mutual inductance type ammeter, thereby avoiding manual operation, saving time and labor and reducing workload.
Description
Technical Field
The utility model belongs to the technical field of breaker opening and closing control, and particularly relates to an opening and closing control system based on a breaker.
Background
The breaker is a switching device which can close, carry and open/close the current under the condition of a normal loop and can close, carry and open/close the circuit under the condition of an abnormal loop within a specified time; the circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power line, a motor and the like, automatically cutting off a circuit when faults such as serious overload, short circuit or undervoltage occur, has the function equivalent to the combination of a fuse type switch, an over-under-heat relay and the like, does not need to change parts after breaking fault current, and is widely applied at present.
At present, the operation of the circuit breaker can only be manually operated and controlled on site, and can not be automatically switched on, and can not be connected with a charge control ammeter, so that the circuit breaker has large operation workload, wastes time and labor, and can not automatically cut off a power supply loop according to the state of the ammeter; therefore, it is urgent to provide a switching control system for a circuit breaker.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a switching-on and switching-off control system based on a circuit breaker, and the switching-on and switching-off control system is used for solving the problems that the existing circuit breaker is large in operation workload, time-consuming and labor-consuming, and cannot automatically cut off a power supply loop according to the state of an ammeter.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a switching-on and switching-off control system based on a circuit breaker, which comprises: the system comprises a three-phase voltage detection unit, an ammeter signal detection unit, a switching-off circuit unit, a switching-on circuit unit, a circuit breaker and a main control unit;
the voltage detection ends of the three-phase voltage detection unit are respectively and electrically connected with the three-phase wire outlet end of the circuit breaker, and the output end of the three-phase voltage detection unit is respectively and electrically connected with the first signal input end of the main control unit;
the ammeter signal detection unit comprises at least one mutual inductance type ammeter, wherein each mutual inductance type ammeter in the at least one mutual inductance type ammeter is electrically connected with the second signal input end of the main control unit respectively;
the first output end of the main control unit is electrically connected with the controlled end of the switching-off circuit unit, and the second output end of the main control unit is electrically connected with the controlled end of the switching-on circuit unit, so that the switching-off circuit unit is controlled to cut off the power supply of the power utilization branch or the switching-on circuit unit is controlled to switch on the power supply of the power utilization branch.
Based on the disclosure, the utility model detects the state of the circuit breaker (such as whether abnormal circuit breaking, voltage loss and the like) in real time through the three-phase voltage detection unit, thereby controlling the power supply of the power branch circuit for switching on or switching off the closing circuit unit and the opening circuit unit according to the state of the circuit breaker (such as power supply side incoming call, circuit breaker capable of tripping under voltage automatically closes); therefore, the automatic operation of the circuit breaker can be realized, the workload of the circuit breaker operation is reduced, and time and labor are saved; meanwhile, the main control unit is electrically connected with the mutual inductance type electric meter, so that the switching-on circuit unit and the switching-off circuit unit can be controlled to switch on or switch off according to the state (such as whether the mutual inductance type electric meter is arreared or not and/or whether the mutual inductance type electric meter is charged or not), and the automatic switching-off and switching-on of the power utilization branch circuit are realized.
Through the design, the on-off of the circuit breaker can be automatically controlled through the state of the circuit breaker and the mutual inductance type electric meter, so that manual operation is not needed, time and labor are saved, and the workload is reduced.
In one possible design, the three-phase voltage detection unit includes a first voltage sensor, a second voltage sensor, and a third voltage sensor, and the first signal input terminal includes a second terminal, a third terminal, and a fourth terminal;
the detection end of the first voltage sensor is electrically connected with the phase A outgoing line end of the circuit breaker, the detection end of the second voltage sensor is electrically connected with the phase B outgoing line end of the circuit breaker, and the detection end of the third voltage sensor is electrically connected with the phase C outgoing line end of the circuit breaker;
and the signal output ends of the first voltage sensor, the second voltage sensor and the third voltage sensor are respectively and electrically connected with a second terminal, a third terminal and a fourth terminal of the main control unit.
In one possible design, the opening circuit unit includes: and the first output end of the main control unit is electrically connected with the coil end of the opening relay.
In one possible design, the closing circuit unit includes: and the second output end of the main control unit is electrically connected with the coil end of the closing relay.
In one possible design, the switching-closing control system further includes: and the signal input end of the man-machine interaction unit is electrically connected with the third signal input end of the main control unit, and the third output end of the main control unit is electrically connected with the signal receiving end of the man-machine interaction unit.
Based on the disclosure, the real-time display of each state of the circuit breaker can be realized through the human-computer interaction unit, the input of user instructions, the initialization of the system and/or the setting of system functions can be realized, and the convenience in use is improved.
In one possible design, the switching-closing control system further includes: and the fourth output end of the main control unit is electrically connected with the controlled end of the alarm circuit unit.
Based on the disclosure, by arranging the alarm circuit unit, alarm prompt can be performed to warn management personnel when abnormal switching-on and switching-off occur; for example, when the three-phase detection unit detects that the reverse power transmission signal exists in the circuit breaker, the main control unit refuses to output a closing instruction, and at the moment, the alarm circuit unit alarms until the reverse power transmission fault is relieved.
In one possible design, the switching-closing control system further includes: the power supply circuit unit, wherein, the voltage input end electricity of power supply circuit unit is connected the live wire inlet wire end of circuit breaker, the voltage output end electricity of power supply circuit unit is connected the power supply end of main control unit.
In one possible design, the master control unit employs an RT2107 type controller.
In one possible design, the closing time of the closing circuit unit is between 3 and 999 s.
The utility model has the beneficial effects that:
(1) the utility model can automatically control the opening and closing of the circuit breaker through the state of the circuit breaker and the mutual inductance type ammeter, thereby avoiding manual operation, saving time and labor and reducing workload.
(2) According to the utility model, through the human-computer interaction unit, real-time display of each state of the circuit breaker can be realized, and input of user instructions, initialization of the system and/or setting of system functions can be realized.
(3) By arranging the alarm circuit unit, the alarm prompt can be carried out when the situation of reverse power transmission occurs when the switch-on is unsuccessful or the switch-on is carried out after the voltage loss and the tripping is carried out, and the switch-on is refused, so that casualty accidents and property loss caused by the reverse power transmission are avoided.
Drawings
Fig. 1 is a schematic structural diagram of a switching-on/off control system based on a circuit breaker provided by the utility model.
Detailed Description
The utility model is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the utility model. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
Examples
As shown in fig. 1, the switching-on/off control system based on the circuit breaker provided by this embodiment can realize automatic switching-on/off of the circuit breaker through the state of the circuit breaker, thereby avoiding manual operation and saving switching-on time; meanwhile, the switching-on and switching-off control system can control the circuit breakers to automatically switch on and switch off according to the state of the mutual inductance type electric meter, and the controllable current of the mutual inductance type electric meter is less than 100A, so that the switching-on and switching-off control system can control the switching-on and switching-off of any circuit breaker of more than 100A through the mutual inductance type electric meter, and the workload of the collection of electric charges is greatly reduced; in addition, through setting up human-computer interaction unit and alarm unit, can realize human-computer interaction and fault alarm, improve the practicality of using, be convenient for extensively promote and use.
As shown in fig. 1, the opening/closing control system based on a circuit breaker provided in the first aspect of this embodiment may include, but is not limited to: the device comprises a three-phase voltage detection unit, an ammeter signal detection unit, a switching-off circuit unit, a switching-on circuit unit, a circuit breaker and a main control unit.
In this embodiment, a three-phase voltage detection unit is used to detect the state of the circuit breaker, that is, the voltage detection terminals of the three-phase voltage detection unit are respectively electrically connected to the three-phase outgoing line terminals of the circuit breaker, and the output terminals of the three-phase voltage detection unit are respectively electrically connected to the first signal input terminal of the main control unit; thereby transmitting a voltage detection signal of the circuit breaker to the main control unit.
The first output end of the main control unit is electrically connected with the controlled end of the opening circuit unit, and the second output end of the main control unit is electrically connected with the controlled end of the closing circuit unit, namely the main control unit obtains a voltage detection result according to the voltage detection signal transmitted by the three-phase voltage detection unit so as to control the opening circuit unit to cut off the power supply of the power utilization branch circuit or control the closing circuit unit to switch on the power supply of the power utilization branch circuit.
In this embodiment, for example, the closing time of the closing circuit unit is between 3s and 999 s; specifically, 3s is taken as an optimal scheme.
Meanwhile, the embodiment is also provided with an ammeter signal detection unit which is used for detecting the state of the ammeter and transmitting the ammeter signal to the main control unit, so that the main control unit automatically controls the opening and closing of the circuit breaker according to the ammeter signal; the main control unit controls the opening and closing of the breaker through the opening circuit unit and the closing circuit unit, so that the automatic cutting-off and switching-on of the power supply of the power utilization branch circuit are realized.
In this embodiment, for example, the electric meter signal detecting unit may include, but is not limited to, at least one mutual inductance type electric meter, where each mutual inductance type electric meter in the at least one mutual inductance type electric meter is electrically connected to the second signal input terminal of the main control unit, so as to implement input of an electric meter detection signal.
In this embodiment, for example, the second signal input terminal may include, but is not limited to, a ninth terminal and a tenth terminal, and the number of the mutual inductance type electric meters is 2, and output terminals of the mutual inductance type electric meters are respectively electrically connected to the ninth terminal and the tenth terminal of the main control unit.
In this embodiment, for example, the main control unit may be, but is not limited to, an RT2107 type controller.
Therefore, the on-off switch of the circuit breaker can be automatically controlled through the state of the circuit breaker and the mutual inductance type electric meter, so that manual operation is not needed, time and labor are saved, and the workload is reduced.
Referring to fig. 1, one of the circuit configurations of the three-phase voltage detecting unit is provided as follows:
in this embodiment, the three-phase voltage detection unit may include, but is not limited to: first voltage sensor, second voltage sensor and third voltage sensor, first signal input part includes second terminal, third terminal and fourth terminal, and the connection structure of above-mentioned each electron device and main control unit and circuit breaker is:
the detection end of the first voltage sensor is electrically connected with the phase A outgoing line end of the circuit breaker, the detection end of the second voltage sensor is electrically connected with the phase B outgoing line end of the circuit breaker, and the detection end of the third voltage sensor is electrically connected with the phase C outgoing line end of the circuit breaker; and the signal output ends of the first voltage sensor, the second voltage sensor and the third voltage sensor are respectively and electrically connected with a second terminal, a third terminal and a third fourth terminal of the main control unit.
The three voltage sensors are used for detecting voltage signals of the circuit breaker in real time and transmitting the voltage signals to the main control unit, and the main control unit analyzes the three-phase connection condition of the circuit breaker according to the voltage signals and judges whether the circuit breaker is in a state of voltage loss or phase loss and the like, so that whether the circuit breaker is in a switching-off state or a switching-on state is obtained; if the circuit breaker is in a voltage loss tripping state or a phase loss state, the main control unit outputs a switching-off instruction, and the circuit breaker is switched off through the switching-off circuit unit to cut off the power supply of the power utilization branch circuit; if the voltage signal of the circuit breaker is judged to be normal, the main control unit outputs a closing instruction, so that the circuit breaker is closed through the closing circuit unit, and the power supply of the power utilization branch circuit is switched on.
Referring to fig. 1, one of the circuit structures of the opening circuit unit and the closing circuit unit is provided as follows:
in this embodiment, for example, the opening circuit unit may include, but is not limited to: a switching-off relay; and the closing circuit unit may include, but is not limited to: a switching-on relay; the first output end of the main control unit is electrically connected with the coil end of the opening relay; and the second output end of the main control unit is electrically connected with the coil end of the switching-on relay.
Therefore, the main control unit can control whether coil ends of the closing relay and the opening relay are electrified or not, and closing and opening of the circuit breaker are achieved.
In this embodiment, a human-computer interaction unit is further provided, wherein a signal input end of the human-computer interaction unit is electrically connected to a third signal input end of the main control unit, and a third output end of the main control unit is electrically connected to a signal receiving end of the human-computer interaction unit.
By arranging the human-computer interaction unit, the real-time display of each state of the circuit breaker can be realized, and the management personnel can conveniently check the states in real time, so that the working state of the circuit breaker can be mastered in time, and the abnormity can be found in time, so that corresponding maintenance measures can be taken; meanwhile, the input of user instructions, the initialization of the system and/or the setting of system functions can be realized, and the use convenience can be improved.
In this embodiment, the example human-computer interaction unit employs a touch display screen.
In this embodiment, an alarm circuit unit is further provided, wherein a fourth output end of the main control unit is electrically connected to a controlled end of the alarm circuit unit; through the design, when the situation of reverse power transmission is detected to occur when the switch-on is unsuccessful or the switch-on is carried out after the voltage loss tripping, the alarm prompt is carried out to refuse the switch-on, thereby avoiding casualty accidents and property loss caused by reverse power transmission.
In this embodiment, the alarm circuit unit may include, but is not limited to: a buzzer.
The following takes a touch display screen and a buzzer as examples to explain the functions of the human-computer interaction unit:
the key definition is as follows: setting a key: enter or exit the setting mode by long pressing for 2 seconds, subtract the function code, add the key: function code "add", shift key: parameter set "subtract", confirm key: and switching on and off a machine key, and setting 'adding' for parameters.
An initial password 9999, which can be entered into a setting and viewing menu after the password is correctly input, and entered by pressing a setting key for 2 seconds (at this time, a corresponding function code, namely a code n, is prompted for prompting a manager to input the password); the prompt of beep after the password is input indicates that the unlocking is successful, and the following functions can be set and the content can be viewed:
and (3) entering rt-0030, setting the code as the switching-on duration, setting the initial switching-on time to be 3 seconds, and setting the range as follows: 3-999 seconds.
Entering 2-0010, wherein the code is the time setting of the switching-off times, the specified time range is 5 minutes-5 x 9999 minutes, and the initial time is 10 minutes.
Entering 3-0003, wherein the code is the brake-separating times within the specified time range, the initial brake-separating times are 3 times, and the specified times range from 3 times to 9999 times.
Entering 4-0000, and checking the total brake opening times by the code number in the range of 0-9999 times.
Entering 5-0000, the code is checked for the number of power failure, and the range is 0-9999.
And entering 6-0000, and checking the code number for the number of switching-on failure times in the range of 0-9999 times.
And 7-0000, checking the number for the number of the returned electricity, wherein the range is 0-9999 times.
And 8-0000, checking the code for exceeding the upper limit of the specified time for opening.
9, the code needs to press the shift and confirm all zero at the same time for restoring the initial setting.
The function code lookup table is provided below, as shown in table 1:
TABLE 1
Meanwhile, the touch display screen can also display the state of the circuit breaker, which can be but is not limited to as shown in table 2:
therefore, through the explanation, the man-machine interaction, the content display and the fault alarm of the control system can be realized, and the use convenience is improved.
In this embodiment, a power supply circuit unit is further provided to supply power to the main control unit, that is, a voltage input end of the power supply circuit unit is electrically connected to a live wire inlet end of the circuit breaker, and a voltage output end of the power supply circuit unit is electrically connected to a power supply end of the main control unit.
In this embodiment, the exemplary power circuit unit may include, but is not limited to: the AC-DC power supply conversion module and the voltage reduction module; the AC-DC power conversion module can adopt but is not limited to an LNK305DN OP-7 type AD-DC conversion chip and peripheral circuits thereof; and the voltage reduction module can adopt but not limited to a ZDM400 type voltage reduction chip and peripheral circuits thereof.
The control functions of the switching-on and switching-off control system are briefly described as follows:
when the RT2107 type controller detects that the circuit breaker is in voltage loss, a brake opening instruction is output, and the circuit breaker is enabled to trip and automatically open the brake; when a power supply side receives a call, the RT2107 type controller judges the voltage state of the circuit breaker through voltage detection signals input by the 2 nd, 3 rd and 4 th terminals, and outputs a closing instruction through electric meter detection signals input by the 9 th and 10 th terminals to enable the circuit breaker to be closed again.
Mutual inductance type ammeter divide-shut brake: when the RT2107 type controller detects that the signal at the output end of the mutual inductance type ammeter is abnormal, a switching-off instruction is output, and a switching-on instruction is output when the signal is normal.
The automatic reclosing device detects voltage detection signals transmitted by the 2 nd, 3 rd and 4 th terminals so as to detect the state of the breaker and analyze whether reclosing is needed or not; the RT2107 type controller analyzes and judges the output command to be sent to the switching-off unit or the switching-on circuit unit according to the input voltage detection signal, and the human-computer interface displays various states.
If the mutual inductance type electric meter is charged, the circuit breaker is placed at a corresponding position through the RT2107 type controller, whether the circuit breaker is at a switching-on position or a switching-off position is detected through the three-phase voltage detection unit, if the circuit breaker is at the switching-on position, the RT2107 type controller does not output an instruction, and if the circuit breaker is at the switching-off position, a switching-on command is output; and if the mutual inductance type ammeter arrears, a brake-opening instruction is output through the controller.
After the power failure maintenance circuit breaker is manually dried, the RT2107 type controller quits the automatic function until the circuit breaker can be automatically switched in after manual closing; and when the detection is carried out, the man-machine interface displays STOP characters, and the power failure can not be relieved.
If the RT2107 type controller detects that a circuit breaker has a reverse power transmission signal during incoming call through a three-phase voltage detection unit, the controller refuses to output a closing instruction until a reverse power transmission fault is relieved, and a human-computer interface displays a P (ABC)0000 character, wherein ABC represents a reverse power transmission phase sequence; the power failure can not be relieved; only after the password is manually output, the automatic function can be released and entered.
Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope 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. The utility model provides a divide-shut brake control system based on circuit breaker which characterized in that includes: the system comprises a three-phase voltage detection unit, an ammeter signal detection unit, a switching-off circuit unit, a switching-on circuit unit, a circuit breaker and a main control unit;
the voltage detection ends of the three-phase voltage detection unit are respectively and electrically connected with the three-phase wire outlet end of the circuit breaker, and the output end of the three-phase voltage detection unit is respectively and electrically connected with the first signal input end of the main control unit;
the ammeter signal detection unit comprises at least one mutual inductance type ammeter, wherein each mutual inductance type ammeter in the at least one mutual inductance type ammeter is electrically connected with the second signal input end of the main control unit respectively;
the first output end of the main control unit is electrically connected with the controlled end of the switching-off circuit unit, and the second output end of the main control unit is electrically connected with the controlled end of the switching-on circuit unit, so that the switching-off circuit unit is controlled to cut off the power supply of the power utilization branch or the switching-on circuit unit is controlled to switch on the power supply of the power utilization branch.
2. The circuit breaker-based switching on/off control system according to claim 1, wherein the three-phase voltage detection unit includes a first voltage sensor, a second voltage sensor, and a third voltage sensor, and the first signal input terminal includes a second terminal, a third terminal, and a fourth terminal;
the detection end of the first voltage sensor is electrically connected with the phase A outgoing line end of the circuit breaker, the detection end of the second voltage sensor is electrically connected with the phase B outgoing line end of the circuit breaker, and the detection end of the third voltage sensor is electrically connected with the phase C outgoing line end of the circuit breaker;
and the signal output ends of the first voltage sensor, the second voltage sensor and the third voltage sensor are respectively and electrically connected with a second terminal, a third terminal and a fourth terminal of the main control unit.
3. The circuit breaker-based switching-closing control system according to claim 1, wherein the switching-off circuit unit includes: and the first output end of the main control unit is electrically connected with the coil end of the opening relay.
4. The circuit breaker-based switching-on/off control system according to claim 1, wherein the switching-on circuit unit includes: and the second output end of the main control unit is electrically connected with the coil end of the closing relay.
5. The circuit breaker-based switching-off and switching-on control system of claim 1, further comprising: and the signal input end of the man-machine interaction unit is electrically connected with the third signal input end of the main control unit, and the third output end of the main control unit is electrically connected with the signal receiving end of the man-machine interaction unit.
6. The circuit breaker-based switching-off and switching-on control system of claim 1, further comprising: and the fourth output end of the main control unit is electrically connected with the controlled end of the alarm circuit unit.
7. The circuit breaker-based switching-off and switching-on control system of claim 1, further comprising: the power supply circuit unit, wherein, the voltage input end electricity of power supply circuit unit is connected the live wire inlet wire end of circuit breaker, the voltage output end electricity of power supply circuit unit is connected the power supply end of main control unit.
8. The circuit breaker-based switching-closing control system according to claim 1, wherein the main control unit adopts an RT2107 type controller.
9. The circuit breaker-based switching-on/switching-off control system according to claim 1, wherein the switching-on time of the switching-on circuit unit is between 3s and 999 s.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122157882.0U CN215580552U (en) | 2021-09-07 | 2021-09-07 | Opening and closing control system based on circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122157882.0U CN215580552U (en) | 2021-09-07 | 2021-09-07 | Opening and closing control system based on circuit breaker |
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| CN215580552U true CN215580552U (en) | 2022-01-18 |
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| CN202122157882.0U Active CN215580552U (en) | 2021-09-07 | 2021-09-07 | Opening and closing control system based on circuit breaker |
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