CN206451672U - A kind of bi-motor operating mechanism for primary cut-out - Google Patents
A kind of bi-motor operating mechanism for primary cut-out Download PDFInfo
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- CN206451672U CN206451672U CN201720028921.8U CN201720028921U CN206451672U CN 206451672 U CN206451672 U CN 206451672U CN 201720028921 U CN201720028921 U CN 201720028921U CN 206451672 U CN206451672 U CN 206451672U
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Abstract
The utility model embodiment, which discloses a kind of bi-motor operating mechanism for primary cut-out, to be included：First motor, the second motor, controller and primary cut-out main shaft；The rotating shaft of first motor is connected with primary cut-out main shaft one end；The rotating shaft of second motor is connected with the primary cut-out main shaft other end；Controller and the first motor connection；Controller and the second motor connection；Wherein, controller is used for after the first electrical fault is detected, and the second motor of driving is transferred to working condition by hot stand-by duty.The utility model embodiment mesohigh breaker main shaft is connected with the rotating shaft of two motors, and two motors are standby each other, after an electrical fault, and another motor is devoted oneself to work, and system remains able to normal work, improves the reliability of system.
Description
Technical field
The utility model is related to high-voltage breaker operation mechanism field, more particularly to a kind of double electricity for primary cut-out
Machine operating mechanism.
Background technology
Requirement with the continuous expansion and user of China's power network scale to power supply reliability is improved constantly, power system pair
The reliability and intellectualized operation of primary cut-out equipment propose higher requirement.Primary cut-out is weight in power system
The switchgear wanted, with control and protection dual-use function, the safe operation to power system is significant.Operating mechanism
As the main motion parts of primary cut-out, direct drive moving contact of breaker is moved, and is that influence breaker work can
One of key factor by property and stability.
Conventional operating mechanism mainly has spring operating mechanism, hydraulic actuating mechanism, hydraulic spring mechanism at present, these behaviour
Motivation structure is due to having that parts are more, controllability is poor, many shortcomings such as complicated, causes it to go out in the process of running
The frequency of existing failure is higher, so the development of new operating mechanism just seems particularly urgent and important with exploitation.
Spring operating mechanism completes the energy storage to switching-in spring using fractional electric motor, and breaking-closing operating work(is not by power supply
Voltage influence, results in higher divide-shut brake speed.Spring operating mechanism fully relies on machine driving, and parts sum is more,
Typically there are up to a hundred parts, and transmission mechanism is complex, fault rate is higher, and moving component is more, and unreliable factor is more.Hydraulic pressure is grasped
Motivation structure has that energy is big, hydraulic oil self-lubricating, and Hydraulic Elements light weight and the fast, reliable in action of reaction speed etc. are a series of excellent
Gesture, but the different degrees of presence oil leak of hydraulic actuating mechanism, the defect such as pipeline is more, element is scattered.With reference to the hydraulic pressure of both advantages
Spring mechanism, it has played hydraulic mechanism to the adaptable advantage of high or low power and the advantage of spring energy-storage.These are traditional
Operating mechanism deposits that impulsive force in operation is big, number of components is more, kinetic characteristic dispersiveness is big.
With the development of Power Electronic Technique, scholars propose the primary cut-out behaviour based on various types of motors
Motivation structure, these electromotor operating mechanisms, simple in construction, moving component greatly reduces, and operating process mechanical stress is small, noise
Small, reliability is of a relatively high, safeguards simple, but when the failure of three phase electric machine winding (short circuit in winding, winding open circuit etc.),
Torque pulsation and loss are significantly increased, and big torque pulsation will have a strong impact on the stroke characteristic of primary cut-out, so as to influence out
The reliability of pass action, when motor driver breaks down, breaker is by cisco unity malfunction.
It is therefore proposed that a kind of can realize the fault-tolerant operation of motor, the actuating machine of primary cut-out operational reliability is improved
Structure is those skilled in the art's technical issues that need to address.
Utility model content
The utility model embodiment discloses a kind of bi-motor operating mechanism for primary cut-out, and the utility model is real
Two motors for applying operating mechanism in example are standby each other, it is possible to achieve the fault-tolerant operation of motor, improve the fortune of primary cut-out
Row reliability.
The utility model embodiment provides a kind of bi-motor operating mechanism for primary cut-out, including：
First motor, the second motor, controller and primary cut-out main shaft；
First motor is connected with described primary cut-out main shaft one end；
Second motor is connected with the primary cut-out main shaft other end；
The controller and first motor connection；
The controller and second motor connection；
Wherein, the controller is used for after first electrical fault is detected, and drives second motor by hot standby
Working condition is transferred to state.
Preferably, a kind of bi-motor operating mechanism for primary cut-out that the utility model embodiment is provided also is wrapped
Include：First sensor and second sensor；
The input of the first sensor and first motor connection；
The input of the second sensor and second motor connection.
Preferably, the input connection of the output end of the first sensor and the controller；
The input connection of the output end of the second sensor and the controller.
Preferably, a kind of bi-motor operating mechanism for primary cut-out that the utility model embodiment is provided also is wrapped
Include：First inverter and the second inverter；
The input of first inverter is connected with the output end of the controller；
The input of second inverter is connected with the output end of the controller.
Preferably, a kind of bi-motor operating mechanism for primary cut-out that the utility model embodiment is provided also is wrapped
Include：Rectifier；
The output end of the rectifier is connected with the input of first inverter, the output end of the rectifier and institute
State the input connection of first sensor；
The output end of the rectifier is connected with the input of second inverter, the output end of the rectifier and institute
State the input connection of second sensor.
Preferably, a kind of bi-motor operating mechanism for primary cut-out that the utility model embodiment is provided also is wrapped
Include：First power supply and second source；
First power supply is connected with the input of the rectifier；
The second source is connected with the input of the rectifier.
Preferably, the output end of first inverter is connected with the stator winding of first motor；
The output end of second inverter is connected with the stator winding of second motor.
Preferably, the quantity of the rectifier is two；
The input of first rectifier is connected with first power supply, the output end of first rectifier and described first
The input connection of inverter, the output end of first rectifier is connected with the input of the first sensor；
The input of second rectifier is connected with the second source, the output end of second rectifier and described second
The input connection of inverter, the output end of second rectifier is connected with the input of the second sensor.
Preferably, the quantity of the controller is two；
The input of first controller is connected with the output end of the first sensor, the output end of first controller
It is connected with the input of first inverter；
The input of second controller is connected with the output end of the second sensor, the output end of the second controller
It is connected with the input of second inverter；
Connected between first controller and the second controller by CAN communication bus.
Preferably, first motor and second motor are permagnetic synchronous motor or induction machine or switching magnetic-resistance
Motor.
As can be seen from the above technical solutions, the utility model embodiment has advantages below：
The utility model embodiment, which provides a kind of bi-motor operating mechanism for primary cut-out, to be included：First electricity
Machine, the second motor, controller and primary cut-out main shaft；The rotating shaft of first motor and described primary cut-out main shaft one end
Connection；The rotating shaft of second motor is connected with the primary cut-out main shaft other end；The controller and first electricity
Machine is connected；The controller and second motor connection；Wherein, the controller is used to detect the first motor event
After barrier, second motor is driven to be transferred to working condition by hot stand-by duty.The utility model embodiment mesohigh breaker master
Axle is connected with the rotating shaft of two motors, and two motors are standby each other, after an electrical fault, and another motor is devoted oneself to work, and is
System remains able to normal work, improves the reliability of system.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is that a kind of structure for bi-motor operating mechanism for primary cut-out that the utility model embodiment is provided is shown
It is intended to；
A kind of another knot for bi-motor operating mechanism for primary cut-out that Fig. 2 provides for the utility model embodiment
Structure schematic diagram；
Fig. 3 is the topological structure schematic diagram of rectifier；
Fig. 4 is the topological structure schematic diagram of inverter.
Embodiment
The utility model embodiment discloses a kind of bi-motor operating mechanism for primary cut-out, and the utility model is real
Two motors for applying operating mechanism in example are standby each other, it is possible to achieve the fault-tolerant operation of motor, improve the fortune of primary cut-out
Row reliability.
Fig. 1 is refer to, a kind of bi-motor operating mechanism for primary cut-out that the utility model embodiment is provided
One embodiment, including：
First motor, the second motor, controller and primary cut-out main shaft；
The rotating shaft of first motor is connected with primary cut-out main shaft one end；
The rotating shaft of second motor is connected with the primary cut-out main shaft other end；
Controller and the first motor connection, controller and the second motor connection, controller are used to control the first motor and the
The rotation of two motors；
Wherein, controller is used for after the first electrical fault is detected, and the second motor of driving is transferred to work by hot stand-by duty
Make state.
A kind of bi-motor operating mechanism for primary cut-out that the utility model embodiment is provided also includes：First passes
Sensor and second sensor；
The input of first sensor and the first motor connection, first sensor are used for the correlation behavior for measuring the first motor
Amount；
The input of second sensor and the second motor connection, second sensor are used for the correlation behavior for measuring the second motor
Amount.
Further, the input connection of the output end of first sensor and controller；
The output end of second sensor and the input connection of controller.
A kind of bi-motor operating mechanism for primary cut-out that the utility model embodiment is provided also includes：First is inverse
Become device and the second inverter；
The input of first inverter and the output end of controller are connected；
The input of second inverter and the output end of controller are connected.
A kind of bi-motor operating mechanism for primary cut-out that the utility model embodiment is provided also includes：Rectification
Device；
The output end of rectifier is connected with the input of the first inverter, the output end of rectifier and first sensor it is defeated
Enter end connection；
The output end of rectifier is connected with the input of the second inverter, the output end of rectifier and second sensor it is defeated
Enter end connection.
A kind of bi-motor operating mechanism for primary cut-out that the utility model embodiment is provided also includes：First electricity
Source and second source；
The input connection of first power supply and rectifier；
The input connection of second source and rectifier.
Further, the output end of the first inverter is connected with the stator winding of the first motor；
The output end of second inverter is connected with the stator winding of the second motor.
Referring to Fig. 2, a kind of bi-motor operating mechanism for primary cut-out that the utility model embodiment is provided
Another embodiment, including：
First motor, the second motor, controller and primary cut-out main shaft；
The rotating shaft of first motor is connected with primary cut-out main shaft one end；
The rotating shaft of second motor is connected with the primary cut-out main shaft other end；
Controller and the first motor connection, controller and the second motor connection, controller are used to control the first motor and the
The rotation of two motors；
Wherein, controller is used for after the first electrical fault is detected, and the second motor of driving is transferred to work by hot stand-by duty
Make state.
A kind of bi-motor operating mechanism for primary cut-out that the utility model embodiment is provided also includes：First passes
Sensor and second sensor；
The input of first sensor and the first motor connection, first sensor are used for the correlation behavior for measuring the first motor
Amount；
The input of second sensor and the second motor connection, second sensor are used for the correlation behavior for measuring the second motor
Amount.
In the present embodiment, the amount of sensor measurement includes：Inverter output voltage, inverter output current, rectifier
Export DC voltage, machine shaft position and speed.
Further, the input connection of the output end of first sensor and controller；
The output end of second sensor and the input connection of controller.
A kind of bi-motor operating mechanism for primary cut-out that the utility model embodiment is provided also includes：First is inverse
Become device and the second inverter；
The input of first inverter and the output end of controller are connected；
The input of second inverter and the output end of controller are connected.
In the present embodiment, the topological structure of the first inverter and the second inverter is as shown in figure 4, V1-V6 opens for IGBT
Device is closed, the output end of inverter and the stator winding of motor are connected.
In the present embodiment, the quantity of controller is two；
The output end of the input of first controller and first sensor is connected, the output end of the first controller and first inverse
Become the input connection of device, wherein, the first controller gathers the output signal of first sensor, and the first controller gives the first inversion
Device sends pwm pulse control signal；
The output end of the input of second controller and second sensor is connected, the output end of second controller and second inverse
Become the input connection of device, wherein, second controller gathers the output signal of second sensor, and second controller gives the second inversion
Device sends pwm pulse control signal；
Connected between first controller and second controller by CAN communication bus.
A kind of bi-motor operating mechanism for primary cut-out that the utility model embodiment is provided also includes：Rectification
Device；
The output end of rectifier is connected with the input of the first inverter, the output end of rectifier and first sensor it is defeated
Enter end connection；
The output end of rectifier is connected with the input of the second inverter, the output end of rectifier and second sensor it is defeated
Enter end connection.
A kind of bi-motor operating mechanism for primary cut-out that the utility model embodiment is provided also includes：First electricity
Source and second source；
The input connection of first power supply and rectifier；
The input connection of second source and rectifier.
Further, the output end of the first inverter is connected with the stator winding of the first motor；
The output end of second inverter is connected with the stator winding of the second motor.
In the present embodiment, the quantity of rectifier is two.
The input of first rectifier is connected with the first power supply, the output end of the first rectifier and the input of the first inverter
End connection, the output end of the first rectifier and the input of first sensor are connected；
The input of second rectifier is connected with second source, the output end of the second rectifier and the input of the second inverter
End connection, the output end of the second rectifier and the input of second sensor are connected.
In the present embodiment, sensor needs the output DC voltage of measurement rectifier.
In the present embodiment, the topological structure of rectifier is as shown in figure 3, use three-phase uncontrollable rectifier device, wherein, T
For isolating transformer, transformer frequency response side winding is connected using triangle, and rectifier bridge side uses Y-connection；VD1-VD6 is two
Pole pipe, three-phase uncontrollable rectifier bridge is constituted by them；C is storage capacitor, it is contemplated that the life-span of electric capacity, and electric capacity selects pulsed capacitance；R
For charging resistor；IGCT K is charging resistor by-pass switch；R1For discharge resistance；Air switch K1Switched for discharge resistance.During startup,
IGCT K disconnects, and power supply charges by charging resistor R to electric capacity C, after electric capacity C voltage is stable, IGCT K conductings, so as to avoid
Excessive rush of current in charging process.After system-down and input power disconnection, the K1 that closes a switch gives electric capacity to discharge, can
Got an electric shock with preventing staff's false touch electric capacity.IGCT K can be substituted for miniature circuit breaker in rectification circuit.
In the present embodiment, the first motor and second motor are permagnetic synchronous motor or induction machine or switch magnetic
Hinder motor.
As shown in Fig. 2 the utility model embodiment is made up of two motors and two sets of motor drivers, two motor difference
Installed in the two ends of primary cut-out main shaft, the rotating shaft of motor connects the main shaft of primary cut-out, and the main shaft of primary cut-out leads to
The moving contact that connecting rod connects primary cut-out is crossed, drives primary cut-out main shaft to rotate by the rotation of controlled motor axle, high pressure
Breaker main shaft drives moving contact to move by connecting rod, and that realizes primary cut-out turns on and off control.Often set motor driving
Device is all made up of three phase supply power supply, rectifier, inverter, sensor and controller, and two sets of used order wires of controller
Link together.
System Working Principle is, when normally running, and the first motor is in running order, and controller drives according to divide-shut brake order
Dynamic breaker main shaft rotation, the second motor is in hot stand-by duty.When the controller of the first motor detects failure (the first motor
Short circuit in winding or open circuit, the inverter of the first motor break down) when, the controller of the first motor, which passes through fault message, to be led to
Letter line passes to the controller of the second motor, and the second motor goes to working condition by hot stand-by duty, it is ensured that system it is normal
Work., can also be in running order by the second motor during normal operation, the first motor is in hot stand-by duty.
Two sets of motor drivers have respective rectifier, and two sets of drivers can also share a set of rectifier, herein not
Limit.
Two sets of motor drivers have respective controller, and two controllers exchange information, two sets of drivings by communicating
The control function of system can be put into the powerful controller of One function, can save communication system to exchange information, herein
Do not limit.
A kind of bi-motor operating mechanism for primary cut-out provided by the utility model has been carried out in detail above
Introduce, for those of ordinary skill in the art, according to the thought of the utility model embodiment, in embodiment and application
It will change in scope, in summary, this specification content should not be construed as to limitation of the present utility model.
Claims (10)
1. a kind of bi-motor operating mechanism for primary cut-out, it is characterised in that including：First motor, the second motor, control
Device and primary cut-out main shaft processed；
The rotating shaft of first motor is connected with described primary cut-out main shaft one end；
The rotating shaft of second motor is connected with the primary cut-out main shaft other end；
The controller and first motor connection；
The controller and second motor connection；
Wherein, the controller is used for after first electrical fault is detected, and drives second motor by stand-by heat shape
State is transferred to working condition.
2. the bi-motor operating mechanism according to claim 1 for primary cut-out, it is characterised in that also include：The
One sensor and second sensor；
The input of the first sensor and first motor connection；
The input of the second sensor and second motor connection.
3. the bi-motor operating mechanism according to claim 2 for primary cut-out, it is characterised in that described first passes
The input connection of the output end of sensor and the controller；
The input connection of the output end of the second sensor and the controller.
4. the bi-motor operating mechanism according to claim 3 for primary cut-out, it is characterised in that also include：The
One inverter and the second inverter；
The input of first inverter is connected with the output end of the controller；
The input of second inverter is connected with the output end of the controller.
5. the bi-motor operating mechanism according to claim 4 for primary cut-out, it is characterised in that also include：It is whole
Flow device；
The output end of the rectifier is connected with the input of first inverter, the output end of the rectifier and described the
The input connection of one sensor；
The output end of the rectifier is connected with the input of second inverter, the output end of the rectifier and described the
The input connection of two sensors.
6. the bi-motor operating mechanism according to claim 5 for primary cut-out, it is characterised in that also include：The
One power supply and second source；
First power supply is connected with the input of the rectifier；
The second source is connected with the input of the rectifier.
7. the bi-motor operating mechanism according to claim 6 for primary cut-out, it is characterised in that described first is inverse
The output end for becoming device is connected with the stator winding of first motor；
The output end of second inverter is connected with the stator winding of second motor.
8. the bi-motor operating mechanism according to claim 5 for primary cut-out, it is characterised in that the rectifier
Quantity be two；
The input of first rectifier is connected with first power supply, the output end of first rectifier and first inversion
The input connection of device, the output end of first rectifier is connected with the input of the first sensor；
The input of second rectifier is connected with the second source, the output end of second rectifier and second inversion
The input connection of device, the output end of second rectifier is connected with the input of the second sensor.
9. the bi-motor operating mechanism according to claim 4 for primary cut-out, it is characterised in that the controller
Quantity be two；
The input of first controller is connected with the output end of the first sensor, the output end of first controller and institute
State the input connection of the first inverter；
The input of second controller is connected with the output end of the second sensor, the output end of the second controller and institute
State the input connection of the second inverter；
Connected between first controller and the second controller by CAN communication bus.
10. the bi-motor operating mechanism for primary cut-out according to claim 1 to 9 any one, its feature exists
In first motor and second motor are permagnetic synchronous motor or induction machine or switched reluctance machines.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720028921.8U CN206451672U (en) | 2017-01-10 | 2017-01-10 | A kind of bi-motor operating mechanism for primary cut-out |
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| CN201720028921.8U CN206451672U (en) | 2017-01-10 | 2017-01-10 | A kind of bi-motor operating mechanism for primary cut-out |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504956A (en) * | 2017-01-10 | 2017-03-15 | 广东电网有限责任公司电力科学研究院 | A kind of bi-motor operating mechanism for primary cut-out |
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2017
- 2017-01-10 CN CN201720028921.8U patent/CN206451672U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504956A (en) * | 2017-01-10 | 2017-03-15 | 广东电网有限责任公司电力科学研究院 | A kind of bi-motor operating mechanism for primary cut-out |
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