CN115763169A - Electric operation control mechanism and control method - Google Patents
Electric operation control mechanism and control method Download PDFInfo
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- CN115763169A CN115763169A CN202211427984.2A CN202211427984A CN115763169A CN 115763169 A CN115763169 A CN 115763169A CN 202211427984 A CN202211427984 A CN 202211427984A CN 115763169 A CN115763169 A CN 115763169A
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Abstract
The embodiment of the invention provides an electric operation control mechanism and a control method, which comprise the following steps: the circuit breaker is connected with the electric operating device; the relay is provided with a relay switch, a first relay end and a second relay end; the input end of the electric operation device is provided with an electric operation input switching-on end and an electric operation input switching-off end; the first relay end is communicated with the electric operation input switching-on end, and the second relay end is communicated with the electric operation input switching-off end; the relay switch can be selected from the first relay terminal and the second relay terminal to be connected. When a closing signal is received, the relay switch is connected with the first relay end, and at the moment, the electric operation device receives the closing signal; when the opening signal is received, the relay switch is connected with the second relay end, and at the moment, the electric operating device receives the opening signal; the existence of the first relay terminal and the second relay terminal ensures that only one signal of switching-on or switching-off is given to the electric operation device at the same time.
Description
Technical Field
The invention relates to the technical field of electric operation, in particular to an electric operation control mechanism and a control method.
Background
The circuit breaker is a key device for controlling the closing of a main loop in a high-power frequency converter, and the commonly used circuit breaker has two closing modes. One is handle operation, closing the circuit breaker by manually operating the handle; circuit breaker closure by an electrically operated mechanism. The electric operating mechanism is called as electric operation for short, and the electric operation has two states, closing and opening. The normal working logic of the electric operator is to enter a closing state after receiving a closing signal and enter an opening state after receiving an opening signal.
In the existing electric operation control method, a controller respectively gives two control signals, one is used for controlling the electric operation to enter a closing state, and the other is used for controlling the electric operation to enter an opening state. However, once the two signals are interfered or the controller is abnormal, the switching-on and switching-off signals are simultaneously supplied to the electric operator, so that the electric operator controls the circuit breaker in a wrong way, the circuit breaker is blocked, correct switching-on or switching-off operation cannot be carried out, and even the circuit breaker is damaged with probability.
Disclosure of Invention
In view of the above problems, embodiments of the present invention have been made to provide an electrically operated control mechanism and a control method that overcome or at least partially solve the above problems.
In order to solve the above problem, an embodiment of the present invention discloses an electric operation control mechanism, including: relays, electric operators and circuit breakers;
the circuit breaker is connected with the electric operation device;
the relay is provided with a relay switch, a first relay end and a second relay end;
the input end of the electric operation device is provided with an electric operation input switching-on end and an electric operation input switching-off end;
the first relay end is communicated with the electric operation input switching-on end, and the second relay end is communicated with the electric operation input switching-off end;
the relay switch can be selected from the first relay terminal and the second relay terminal to be connected.
Preferably, the device also comprises a frequency conversion cabinet controller and an auxiliary contact component;
the input end of the auxiliary contact component is connected with the output end of the electric operation device;
the input end of the auxiliary contact part is provided with a first auxiliary switch, a second auxiliary switch, a first auxiliary end, a second auxiliary end and a third auxiliary end;
the output end of the electric operator device is provided with an electric operator output switching-on end and an electric operator output switching-off end;
the first auxiliary end is communicated with the electric operation output switching-on end, and the second auxiliary end is communicated with the electric operation output switching-off end;
the frequency conversion cabinet controller is communicated with the second auxiliary switch;
wherein the first auxiliary switch is connectable to one of the first auxiliary terminal and the second auxiliary terminal;
the second auxiliary switch is connectable with the third auxiliary terminal.
Preferably, the power supply further comprises a first power supply, a second power supply and a third power supply;
the relay is communicated with the first power supply;
the electric operator is communicated with the second power supply;
the auxiliary contact member is in communication with the third power source.
Preferably, the second auxiliary switch comprises an electrical terminal and a terminal;
the third auxiliary terminal is connected with the third power supply;
the electric connection end can be connected with the third auxiliary end, and the electric connection end is connected with the variable frequency cabinet controller.
Preferably, one end of the relay switch can be selectively connected to the first relay terminal and the second relay terminal, and the other end of the relay switch is connected to the first power supply.
Preferably, one end of the first auxiliary switch is selectively connectable to one of the first auxiliary terminal and the second auxiliary terminal, and the other end of the first auxiliary switch is grounded.
An electric operation control method based on the device adopts any one of the electric operation control mechanisms;
when the electric operation control mechanism receives a switching-on signal, the relay switch is connected with the first relay end, the first auxiliary switch is connected with the first auxiliary end, the electric operation control mechanism forms a switching-on loop, and the electric operation device controls the circuit breaker to perform switching-on operation;
and when the breaker completes the switching-on operation, the first auxiliary switch is connected with the second auxiliary end, the second auxiliary switch is connected with the third auxiliary end, and the switching-on loop is cut off.
Preferably, after the step of completing the switching operation of the circuit breaker, the first auxiliary switch is connected to the second auxiliary terminal, the second auxiliary switch is connected to the third auxiliary terminal, and after the switching-on circuit is cut off, the method further includes:
when the electrically operated control mechanism receives a brake separating signal, the relay switch is connected with the second relay end, the first auxiliary switch is connected with the second auxiliary end, the electrically operated control mechanism forms a brake separating loop, and the electrically operated device controls the circuit breaker to perform brake separating operation.
Preferably, in step (a) when the electrically operated control mechanism receives a tripping signal, the relay switch is connected to the second relay terminal, the first auxiliary switch is connected to the second auxiliary terminal, the electrically operated control mechanism forms a tripping circuit, and after the electrically operated device controls the circuit breaker to perform a tripping operation, the method further includes:
when the breaker completes the opening operation, the first auxiliary switch is connected with the first auxiliary end, the second auxiliary switch is disconnected with the third auxiliary end, and the opening loop is cut off.
The embodiment of the invention has the following advantages:
when a closing signal is received, the relay switch is connected with the first relay end, and at the moment, the electric operation device receives the closing signal; when the opening signal is received, the relay switch is connected with the second relay end, and at the moment, the electric operating device receives the opening signal; the existence of the first relay terminal and the second relay terminal ensures that only one signal of switching on or switching off is given to the electric operation device at the same time, and the electric operation control error condition can not occur.
Drawings
FIG. 1 is a schematic structural view of an embodiment of an electrically operated control mechanism of the present invention;
fig. 2 is another structural schematic diagram of an embodiment of an electrically operated control mechanism of the present invention.
The reference numbers in the drawings of the specification are as follows:
a relay 1; a circuit breaker 2; an auxiliary contact member 3; a frequency conversion cabinet controller 4; an electric operation device 5; a first power supply 6; a first relay terminal 7; the electric operation input closing end 8; an electrically operated output switching-on end 9; a first auxiliary terminal 10; a first auxiliary switch 11; a second auxiliary switch 12; a third auxiliary terminal 13; a third power supply 14; a second auxiliary terminal 15; an operation output opening end 16; an electrically operated input opening end 17; a second relay terminal 18; a relay switch 19; a second power supply 20.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1-2, fig. 1 is a schematic structural diagram of an embodiment of an electrically operated control mechanism according to the present invention, which may specifically include: the relay 1, the electric operating device 5 and the circuit breaker 2;
the circuit breaker 2 is connected with the electric operating device 5;
the relay 1 is provided with a relay switch 19, a first relay terminal 7 and a second relay terminal 18;
the input end of the electric operation device 5 is provided with an electric operation input switching-on end 8 and an electric operation input switching-off end 17;
the first relay terminal 7 is communicated with the electric operation input switching-on terminal 8, and the second relay terminal 18 is communicated with the electric operation input switching-off terminal 17;
wherein, the relay switch 19 can be alternatively connected between the first relay terminal 7 and the second relay terminal 18. More specifically, when receiving a closing signal, the relay switch 19 is connected to the first relay terminal 7, and at this time, the electric operation device 5 receives the closing signal; when the opening signal is received, the relay switch 19 is connected with the second relay terminal 18, and at the moment, the electric operation device 5 receives the opening signal; the existence of the first relay terminal 7 and the second relay terminal 18 ensures that only one signal of switching-on or switching-off is given to the electric operation device 5 at the same time, and the electric operation control error condition can not occur.
Next, an electrically operated control mechanism in the present exemplary embodiment will be further described.
As an example, the device also comprises a frequency conversion cabinet controller 4 and an auxiliary contact component 3;
the input end of the auxiliary contact component 3 is connected with the output end of the electric operator 5;
a first auxiliary switch 11, a second auxiliary switch 12, a first auxiliary terminal 10, a second auxiliary terminal 15 and a third auxiliary terminal 13 are arranged on the input end of the auxiliary contact component 3;
the output end of the electric operator device 5 is provided with an electric operator output switching-on end 9 and an electric operator output switching-off end 16;
the first auxiliary end 10 is communicated with the electric operation output switching-on end 9, and the second auxiliary end 15 is communicated with the electric operation output switching-off end 16;
the frequency conversion cabinet controller 4 is communicated with the second auxiliary switch 12;
wherein the first auxiliary switch 11 can be alternatively connected between the first auxiliary terminal 10 and the second auxiliary terminal 15;
the second auxiliary switch 12 can be connected to the third auxiliary terminal 13. More specifically, the inverter cabinet controller 4 is electrically connected with the relay 1, and the relay 1 can receive signals about switching on and switching off sent by the inverter cabinet controller 4.
As an example, a first power supply 6, a second power supply 20, and a third power supply 14;
the relay 1 is in communication with the first power source 6;
the electric operator 5 is in communication with the second power source 20;
the auxiliary contact member 3 communicates with the third power source 14. More specifically, the first power supply 6, the second power supply 20, and the third power supply 14 are each a power supply voltage of 24V. One end of the relay switch 19 is connected with the first power supply 6; the third auxiliary terminal 13 of the auxiliary contact member 3 is connected to a third power source 14, and one terminal of the first auxiliary switch 11 is grounded.
Next, an electric operation control method in the present exemplary embodiment will be further described. The method specifically comprises the following steps: the electric operation control mechanism is as described above;
when the electric operation control mechanism receives a closing signal, the relay switch 19 is connected with the first relay terminal 7, the first auxiliary switch 11 is connected with the first auxiliary terminal 10, the electric operation control mechanism forms a closing loop, and the electric operation device 5 controls the circuit breaker 2 to perform closing operation;
after the circuit breaker 2 completes the switching-on operation, the first auxiliary switch 11 is connected to the second auxiliary terminal 15, the second auxiliary switch 12 is connected to the third auxiliary terminal 13, and the switching-on loop is cut off.
More specifically, after the step of completing the switching operation of the circuit breaker 2, the first auxiliary switch 11 is connected to the second auxiliary terminal 15, the second auxiliary switch 12 is connected to the third auxiliary terminal 13, and after the switching circuit is cut off, the method further includes:
when the electric operation control mechanism receives a brake-separating signal, the relay switch 19 is connected with the second relay terminal 18, the first auxiliary switch 11 is connected with the second auxiliary terminal 15, the electric operation control mechanism forms a brake-separating loop, and the electric operation device 5 controls the circuit breaker 2 to perform brake-separating operation.
More specifically, when the electrically operated control mechanism receives the opening signal in step (a), the relay switch 19 is connected to the second relay terminal 18, the first auxiliary switch 11 is connected to the second auxiliary terminal 15, the electrically operated control mechanism forms an opening loop, and after the electrically operated device 5 controls the circuit breaker 2 to perform the opening operation, the method further includes:
after the circuit breaker 2 completes the opening operation, the first auxiliary switch 11 is connected with the first auxiliary terminal 10, the second auxiliary switch 12 is disconnected with the third auxiliary terminal 13, and the opening loop is cut off.
More specifically, this scheme electricity behaviour control mechanism mainly includes relay 1, electricity behaviour device 5, circuit breaker 2, converter cabinet controller 4 and auxiliary contact part 3. The electric operator 5 is installed in the circuit breaker 2, which can automatically control the closing operation of the circuit breaker 2 from a remote distance. Wherein, the electric operation device 5 is powered by an external 24V power supply. The input end of the electric operation device 5 is connected with the relay 1, and the relay 1 can be a single-pole double-throw relay 1. The first relay terminal 7 of the relay 1 is communicated with the electric operation input switching-on terminal 8, and the second relay terminal 18 is communicated with the electric operation input switching-off terminal 17. The output of the electric operator 5 is connected to the auxiliary contact member 3, the first auxiliary terminal 10 is in communication with the electric operator output switch-on terminal 9, the second auxiliary terminal 15 is in communication with the electric operator output switch-off terminal 16, and the third auxiliary terminal 13 is in communication with the third power supply 14.
In an initial default state that the electric operation control mechanism does not perform any operation, the electric operation device 5 is connected with the second power supply 20; one end of the relay switch 19 is connected with the first power supply 6, and the other end is connected with the second relay terminal 18; one end of the first auxiliary switch 11 is connected with the first auxiliary terminal 10, and the other end is grounded; the second auxiliary switch 12 has its electrical terminal suspended, the electrical terminal being connected to the inverter cabinet controller 4, and the third auxiliary terminal 13 being connected to a third power supply 14.
It should be noted that the low level signal output by the inverter cabinet controller 4 is an opening signal, and the high level signal output by the inverter cabinet controller is a closing signal.
After the electric operation device 5 is powered on, the electric operation device 5 is powered by the second power supply 20 to meet the electric operation action condition.
At this time, if the inverter cabinet controller 4 outputs a low level signal, namely, a brake-separating signal, the relay switch 19 is connected with the second relay terminal 18, the first auxiliary switch 11 is connected with the first auxiliary terminal 10, and the power connection terminal of the second auxiliary switch 12 is suspended; at this moment, the closing loop and the opening loop are not conducted, the electric operation control mechanism is in an initial default state, and the circuit breaker 2 is not closed.
If the inverter cabinet controller 4 outputs a high level signal, that is, a closing signal, the relay switch 19 is connected to the first relay terminal 7, and at this time, the first auxiliary switch 11 is in a default state, that is, one end of the first auxiliary switch 11 is connected to the first auxiliary terminal 10, and the other end is grounded. At this time, a closing circuit is formed, and the electric operation device 5 controls the circuit breaker 2 to close.
After the circuit breaker 2 is closed, the first auxiliary switch 11 is connected to the second auxiliary terminal 15, and the second auxiliary switch 12 is connected to the third auxiliary terminal 13. At this time, the third power supply 14 is communicated with the inverter cabinet controller 4, and the inverter cabinet controller 4 confirms that the circuit breaker 2 is closed. At this time, since the relay switch 19 is connected to the first relay terminal 7 and the first auxiliary switch 11 is connected to the second auxiliary terminal 15, that is, the opening circuit and the closing circuit are not conducted, even if the inverter cabinet controller 4 outputs a high-level signal during this period, the electric operation device 5 does not control the relay 1 to perform the closing operation. In this non-conducting state, the electric operating device 5 is prevented from entering the closing state and continuing to control the circuit breaker 2 to perform the closing operation, and the service lives of the electric operating device 5 and the circuit breaker 2 are prolonged.
After the circuit breaker 2 completes the switching-on operation, if the frequency conversion cabinet controller 4 outputs a low level signal again, namely a switching-off signal, the relay switch 19 is connected with the second relay terminal 18; the first auxiliary switch 11 is in a state when the switch is closed, that is, the first auxiliary switch 11 is connected with the second auxiliary terminal 15; the electrical connection terminal of the second auxiliary switch 12 is connected to the third auxiliary terminal 13. At this time, the opening circuit is turned on, the electric operation device 5 controls the breaker 2 to perform opening operation, and the breaker 2 is turned off.
It should be noted that, after the circuit breaker 2 is opened, the first auxiliary switch 11 is connected to the first auxiliary terminal 10; the power connection end of the second auxiliary switch 12 is floating, and at this time, the inverter cabinet controller 4 confirms that the circuit breaker 2 is disconnected due to the disconnection of the third power supply 14 from the inverter cabinet controller 4. Since the relay switch 19 is connected to the second relay terminal 18 and the first auxiliary switch 11 is connected to the first auxiliary terminal 10, i.e. the opening circuit and the closing circuit are not conductive, the electric operating device 5 maintains the existing state.
It should be noted that for simplicity of description, the method embodiments are shown as a series of combinations of acts, but those skilled in the art will recognize that the embodiments are not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
The embodiments in the present specification 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.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the true scope of the embodiments of the present invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. 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 terminal 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 terminal. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or terminal apparatus that comprises the element.
The above detailed description of the electric operation control mechanism and the control method provided by the present invention, and the specific examples applied herein have been provided to explain the principle and the implementation of the present invention, and the above description of the embodiments is only used to help understanding the present invention and its core ideas; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. An electric operation control mechanism, comprising: relays, electrical devices and circuit breakers;
the circuit breaker is connected with the electric operation device;
the relay is provided with a relay switch, a first relay end and a second relay end;
the input end of the electric operation device is provided with an electric operation input switching-on end and an electric operation input switching-off end;
the first relay end is communicated with the electric operation input switching-on end, and the second relay end is communicated with the electric operation input switching-off end;
the relay switch can select one of the first relay terminal and the second relay terminal to be connected.
2. The electrically operated control mechanism of claim 1 further comprising a variable frequency cabinet controller and an auxiliary contact member;
the input end of the auxiliary contact component is connected with the output end of the electric operation device;
the input end of the auxiliary contact part is provided with a first auxiliary switch, a second auxiliary switch, a first auxiliary end, a second auxiliary end and a third auxiliary end;
the output end of the electric operator device is provided with an electric operator output switching-on end and an electric operator output switching-off end;
the first auxiliary end is communicated with the electric operation output switching-on end, and the second auxiliary end is communicated with the electric operation output switching-off end;
the frequency conversion cabinet controller is communicated with the second auxiliary switch;
wherein the first auxiliary switch is connectable to one of the first auxiliary terminal and the second auxiliary terminal;
the second auxiliary switch is connectable with the third auxiliary terminal.
3. The electrically operated control mechanism of claim 2 further comprising a first power source, a second power source and a third power source;
the relay is communicated with the first power supply;
the electric operator is communicated with the second power supply;
the auxiliary contact member is in communication with the third power source.
4. The electrically operated control mechanism according to claim 3 wherein said second auxiliary switch includes an electrical terminal and a terminal;
the third auxiliary terminal is connected with the third power supply;
the electric connection end can be connected with the third auxiliary end, and the electric connection end is connected with the variable frequency cabinet controller.
5. The electric operation control mechanism according to claim 3, wherein one end of the relay switch is connectable to one of the first relay terminal and the second relay terminal, and the other end is connected to the first power source.
6. An electrically operated control mechanism according to claim 3 wherein one end of said first auxiliary switch is connectable alternatively to said first auxiliary terminal and said second auxiliary terminal, and the other end is grounded.
7. A control method characterized by using an electrically operated control mechanism according to any one of claims 3 to 6;
when the electric operation control mechanism receives a switching-on signal, the relay switch is connected with the first relay end, the first auxiliary switch is connected with the first auxiliary end, the electric operation control mechanism forms a switching-on loop, and the electric operation device controls the circuit breaker to perform switching-on operation;
when the breaker completes the closing operation, the first auxiliary switch is connected with the second auxiliary end, the second auxiliary switch is connected with the third auxiliary end, and the closing loop is cut off.
8. The method according to claim 7, wherein after the step of completing the closing operation of the circuit breaker, the first auxiliary switch is connected to the second auxiliary terminal, the second auxiliary switch is connected to the third auxiliary terminal, and after the closing circuit is cut off, the method further comprises:
when the electric operating control mechanism receives a brake separating signal, the relay switch is connected with the second relay end, the first auxiliary switch is connected with the second auxiliary end, the electric operating control mechanism forms a brake separating loop, and the electric operating device controls the circuit breaker to perform brake separating operation.
9. The method according to claim 8, wherein the step of connecting the relay switch to the second relay terminal, connecting the first auxiliary switch to the second auxiliary terminal, and forming the electrically operated control unit as a tripping circuit when the electrically operated control unit receives a tripping signal, further comprises the step of, after the electrically operated device controls the circuit breaker to perform the tripping operation:
when the breaker finishes the opening operation, the first auxiliary switch is connected with the first auxiliary end, the second auxiliary switch is disconnected with the third auxiliary end, and the opening loop is cut off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211427984.2A CN115763169A (en) | 2022-11-15 | 2022-11-15 | Electric operation control mechanism and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211427984.2A CN115763169A (en) | 2022-11-15 | 2022-11-15 | Electric operation control mechanism and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115763169A true CN115763169A (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211427984.2A Pending CN115763169A (en) | 2022-11-15 | 2022-11-15 | Electric operation control mechanism and control method |
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| Country | Link |
|---|---|
| CN (1) | CN115763169A (en) |
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2022
- 2022-11-15 CN CN202211427984.2A patent/CN115763169A/en active Pending
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