CN109817495A - A two-pole miniature circuit breaker with a combination of L and N poles - Google Patents
A two-pole miniature circuit breaker with a combination of L and N poles Download PDFInfo
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- CN109817495A CN109817495A CN201910057413.6A CN201910057413A CN109817495A CN 109817495 A CN109817495 A CN 109817495A CN 201910057413 A CN201910057413 A CN 201910057413A CN 109817495 A CN109817495 A CN 109817495A
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- 238000004891 communication Methods 0.000 claims abstract description 42
- 230000003068 static effect Effects 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 238000012544 monitoring process Methods 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims description 34
- 230000005611 electricity Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 17
- 238000010586 diagram Methods 0.000 description 13
- 238000009434 installation Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The present invention provides a kind of two minimal type breakers combined with the pole L and the pole N; including: shell, handle, operating mechanism, at least one protection buckle releaser, shunt release, moving contact, static contact, arc-chutes, zero sequence transformer, electronic control unit and communication module are preset protection act value in electronic control unit by correspondence by external control centre and are opened, closing defencive function.The two minimal type breakers combined according to the present invention with the pole L and the pole N may be implemented the basic function of breaker and realize that power supply bureau carries out real-time monitoring to the electric current of residual current, major loop in resident and the on off operating mode of breaker by breaker; and the data monitored can be uploaded in real time to external control centre, while external control centre can open or close residual current protecting function according to the size of residual current.
Description
Technical field
The present invention relates to Low Voltage Electrical Apparatus, relate more specifically to a kind of two minimal types open circuit combined with the pole L and the pole N
Device.
Background technique
With the needs of low-voltage distribution network intelligent development, power supply bureau needs to embody hommization and protection power grid security
Real-time monitoring is carried out to the electric current of residual current, major loop in resident and the on off operating mode of breaker by breaker, and will
The data monitored upload in real time, while grid service center can carry out the behaviour of selectivity according to the residual current value monitored
Make: only reminding user and carried out without the residual current protecting in circuit or by communication command force disconnect circuit remaining
Current protection or breaker carries out residual current protecting in circuit automatically when reaching certain setting value；External control centre also needs
It is analyzed according to the internal temperature of breaker and loop current data, determines that scene causes with the presence or absence of the virtual connection of major loop route
Circuit breaker internal temperature is excessively high and then damages the failure of breaker；External control centre also needs can be to the correlation function of breaker
Carry out remote upgrade.
In order to meet above-mentioned functional requirement, since resident's electricity box bulk is fixed, the increase of breaker size is abundant
Degree is limited.
Traditional mini-type residual current protective breaker, can only meet and carry out automatically when residual current value reaches setting value
The portion requirements of residual current protecting in circuit cannot achieve other operational requirements of power supply bureau.
A kind of dc circuit breaker is proposed in patent document CN105931924B may be implemented residual current, main circuit current
With State-Inspect of High-Voltage Circuit function, the overload or short-circuit protection of route or equipment, and the number that can will be monitored may be implemented
According to carrying out communication upload, but do not have residual current protecting function, is opened or closed with less by external control centre
The functions such as residual current protecting, the monitoring of circuit breaker internal temperature, circuit breaker electric sub-control unit the functions such as remote upgrade.
Traditional mini-type residual current protective breaker and dc circuit breaker, to realize residual current monitoring, major loop
Current monitoring, State-Inspect of High-Voltage Circuit, circuit breaker internal temperature monitoring, the overload and short-circuit protection of route or equipment, in outside
Heart control breaker opens or closes the functions such as residual current protecting and the data for monitoring breaker are realized and uploaded in real time
And the functions such as remote upgrade, need additionally to increase the installation of related elements, and need to carry out external cabling, it is erroneous for installation, it occupies
Space is larger, the needs of the hommization and protection power grid security that are not able to satisfy in power supply bureau's intelligent development.
Summary of the invention
The present invention provides a kind of two minimal type breakers combined with the pole L and the pole N.
A kind of two minimal type breakers combined with the pole L and the pole N, the pole N contact system is earlier than the pole the L contact system
System closure, is later than the disconnection of the pole L contact system, and the breaker includes: shell, handle, operating mechanism, at least one protection
Buckle releaser, shunt release, moving contact, static contact, zero sequence transformer, electronic control unit, communication module, the operation machine
Structure, shunt release, moving contact, static contact, zero sequence transformer, electronic control unit and communication module are set to the shell
Interior, the pole the L major loop conducting wire and the pole N major loop conducting wire both pass through the hole heart of the zero sequence transformer, the zero sequence transformer
It is electrically connected respectively with the electronic control unit with the shunt release, the communication module and the electronic control unit
Electrical connection, and can be connect in a wired or wireless fashion with external control centre, the external control centre exists by correspondence
The electronic control unit presets protection act value and opens, closes defencive function.
In a preferred embodiment, protection act value includes the action current setting valve of the defencive functions such as residual current protecting
With the action delay time.
In a preferred embodiment, the zero sequence transformer is continued by the electronic control unit and the communication module
Residual current information is sent to the external control centre.
It in a preferred embodiment, further include Rogowski coil, one in the pole L major loop conducting wire or the pole N major loop conducting wire
Across the Rogowski coil, the secondary line of the Rogowski coil and the electronic control unit are electrically connected, the external control
Center or the electronic control unit judge according to the collected current value of the Rogowski coil and circuit-breaker switching on-off state
The state of breaker.
In a preferred embodiment, the electronic control unit is led back according to the collected electric current judgement of the Rogowski coil
Whether overload fault electric current is occurred in road, as overload fault electric current occurs in major loop, described in the electronic control unit is connected
Shunt release circuit, makes breaker open operation.
In a preferred embodiment, it is extremely interior close to electricity that N can be arranged in the zero sequence transformer and the Rogowski coil simultaneously
Source and it is located at the first area of the second quadrant or close to load end and is located at the second area of first quartile, or is divided into
The first area and the second area.
In a preferred embodiment, the electronic control unit can be set to breaker N extremely in close to power end and be located at the
The first area of two quadrant is provided close to load end and is located at the second area of first quartile.
In a preferred embodiment, the protection buckle releaser is short-circuit instantaneous release and overloads long delay buckle releaser wherein
One of, or both be arranged simultaneously.
In a preferred embodiment, circuit-breaker status includes:
Breaker is in closing by hand state；
Since current overload is to making overload long delay buckle releaser movement disconnect breaker, breaker is in disjunction state；
Since current overload is to making short-circuit instantaneous release movement disconnect breaker, breaker is in disjunction state；
Due to manual brake separating, breaker is in disjunction state.
In a preferred embodiment, breaker disjunction state carries out comprehensive according to the circuit breaker load terminal voltage value detected
Close judgement.
In a preferred embodiment, the electronic control unit can also can take electricity in circuit breaker internal by external power supply.
In a preferred embodiment, the width difference of the pole L and the pole N breaker is not less than 4mm.
In a preferred embodiment, a wider pole is equipped with narrow portion and width portion, and the narrow portion is higher than the width portion.
In a preferred embodiment, the shell contains at least one base shell, a lid shell and is used for the pole L and the pole N
The middle casing separated.
In a preferred embodiment, the middle casing includes first shell and second shell, the first shell and
Two shells separately formed can assemble afterwards, can also be integrally formed.
In a preferred embodiment, be provided in the middle casing for separating the pole L and the pole N be used for conducting wire pass through it is saturating
Hole.
In a preferred embodiment, it is provided with the relief hole that can cooperate with communication module in shell, cooperates with communication module
Relief hole can be provided separately in base shell or in lid shell, can also be by phase or in the shell for separating the pole L and the pole N
Two adjacent shells are assembled.
It in a preferred embodiment, further include residual current test device, the test device is electrically connected in the pole L and N
Between pole, also cross the hole heart of the zero sequence transformer, breakpoint is provided in the test device, the breakpoint can will be tested
Circuit is switched on or switched off.
In a preferred embodiment, the mode that the electronic control unit is communicated with external control centre includes wire communication
With two kinds of wireless communication, electronic control unit is connect with wired communication mode with external control centre by communication module, can also
It is connect with communication such as bluetooth, Wifi etc. with external control centre, external control centre can be by wired or wireless logical
Letter mode carries out remote upgrade to electronic control unit.
In a preferred embodiment, it is provided with temperature-sensing element in electronic control unit, it can be to circuit breaker internal
Temperature carries out real-time monitoring, and the temperature data monitored can be transmitted to external control centre.
Two minimal types breaker according to an embodiment of the present invention, not only may be implemented the basic function of breaker, Er Qieke
To realize power supply bureau by breaker to the electric current of residual current, major loop in resident's inner looping and the on-off shape of breaker
State, the temperature of circuit breaker internal carry out real-time monitoring, and the data monitored can be uploaded to external control centre in real time, simultaneously
Outside hub can open or close the functions such as residual current protecting according to the size of residual current, can also use communication mode pair
Electronic control unit in breaker carries out remote upgrade, and effectively reduces the installation dimension of breaker.
Detailed description of the invention
By reading detailed description of non-limiting embodiments referring to the drawings, other feature of the invention,
Objects and advantages will become more apparent upon, wherein the same or similar appended drawing reference indicates the same or similar feature.It is aobvious and easy
Insight, drawings in the following description are only some embodiments of the invention, for those of ordinary skill in the art, not
Under the premise of making the creative labor, it is also possible to obtain other drawings based on these drawings.
Attached drawing 1 is the pole the N structural schematic diagram of the miniature circuit breaker combined with the pole L and the pole N of the invention.
Attached drawing 2 is the partial enlargement diagram of Fig. 1.
Attached drawing 3 is shunt release structural schematic diagram of the invention.
Attached drawing 4 is electronic control unit structural schematic diagram of the invention.
Attached drawing 5 is the pole N interior zone schematic diagram of the invention.
Attached drawing 6 is middle casing schematic diagram of the invention.
Attached drawing 7 is another angled arrangement schematic diagram of middle casing of the invention.
Attached drawing 8 is another embodiment structure schematic diagram of middle casing of the invention.
Attached drawing 9 is the appearance schematic diagram after shell of the present invention is assembled.
Attached drawing 10 is the pole L of the present invention structural schematic diagram.
Attached drawing 11 is that electronic control unit route and other elements of the invention are electrically connected schematic diagram.
Attached drawing 12 is the miniature circuit breaker overall structure diagram combined with the pole L and the pole N of the invention.
Specific embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below.In following detailed description
In, many details are proposed, in order to provide complete understanding of the present invention.But to those skilled in the art
It will be apparent that the present invention can be implemented in the case where not needing some details in these details.Below to implementation
The description of example is used for the purpose of providing by showing example of the invention and better understanding of the invention.The present invention never limits
In any concrete configuration set forth below and algorithm, but cover under the premise of without departing from the spirit of the present invention element,
Any modification, replacement and the improvement of component and algorithm.In the the accompanying drawings and the following description, well known structure and skill is not shown
Art is unnecessary fuzzy to avoid causing the present invention.
The invention proposes a kind of two minimal type breakers combined with the pole L and the pole N, and breaker not only may be implemented
Basic function, and may be implemented power supply bureau by breaker to the electric current of residual current, major loop in resident's inner looping and
The on off operating mode of breaker, circuit breaker internal temperature carry out real-time monitoring, and the data monitored can be uploaded to outside in real time
Control centre, while outside hub can open or close the functions such as residual current protecting according to the size of residual current, meanwhile,
External control centre can open or close the functions such as residual current protecting according to the size of residual current, can also use communication party
Formula carries out remote upgrade to the electronic control unit in breaker, and effectively reduces the installation dimension of breaker.
With reference to the accompanying drawing, the two minimal types open circuit according to an embodiment of the present invention combined with the pole L and the pole N is described in detail
Device.
As shown in Figures 1 to 6, a kind of two minimal type breakers combined with the pole L and the pole N, the pole N contact system are early
It is closed in the pole L contact system, is later than the disconnection of the pole L contact system, the pole N includes base shell 10, handle 1, operating mechanism
2, shunt release 9, moving contact 3, static contact 5, zero sequence transformer 8, Rogowski coil 7, electronic control unit 6, communication module 11,
The operating mechanism 2, shunt release 9, moving contact 3, static contact 5, zero sequence transformer 8, Rogowski coil 7, electronic control unit 6
It is set in base shell 10 with communication interface 11, and the operating mechanism 2 is associated with the moving contact 3, is made by stirring handle 1
The handle 1 can drive the operating mechanism 2 to act around the rotation in its center of circle, and then the operating mechanism 2 drives the dynamic touching
First 3 movement, so as to realize the disconnection and closure of the moving contact 3 and the static contact 5.When the moving contact 3 with it is described
It closes a floodgate when static contact 5 is closed, major loop is powered；When the moving contact 3 is disconnected with the static contact 5, that is, and separating brake, major loop
Power-off.
It is extremely interior that the zero sequence transformer 8 is placed in N, and is electrically connected with one end of the electronic control unit 6, and L is extremely led back
Line conductor and the pole N major loop conducting wire both pass through the hole heart of the zero sequence transformer 8, and then residual current in major loop may be implemented
Real-time monitoring, it is single that the zero sequence transformer 8 and the sustainable residual current signal that will be monitored are sent to the electronic control
Member 6.
The communication module 11 is electrically connected with the electronic control unit 6, and can with external control centre with wired or
Wireless mode connection, to make the electronic control unit 6 that the residual current signal received is passed through the communication module 11
Be transmitted to the external control centre, the external control centre according to the residual current value signal received decide whether unlatching or
Residual current protecting function is closed, while the instruction for opening or closing protection residual current protecting function is passed through into the communication mould
Block 11 feeds back to the electronic control unit 6.
As shown in Figure 1 to Figure 3, the shunt release 9 be placed in N extremely in, with electronic control unit 6 be electrically connected, it is described
Shunt release 9 includes: dynamic iron core 91, coil 92, spring 93 and static iron core 94,94 phase of the dynamic iron core 91 and the static iron core
Cooperate, the via hole that the dynamic iron core 91 can be allowed to pass through is equipped in the static iron core 94, the coil 92 is centered around the dynamic iron core
91 and static iron core 94 outside, the spring 93 is set in the dynamic iron core 91, and is abutted against with the static iron core 94.
After the electronic control unit 6, which receives the external control centre, opens the instruction of residual current protecting, and
When the residual current signal that the electronic control unit 6 receives reaches protection act setting valve, then the shunted exciter tripping is connected
Device 9.Specifically, the electronic control is single when residual current signal reaches the setting valve that the electronic control unit 6 is set
Member 6 can allow the shunt release 9 to be connected again after reaching the delay time that the electronic control unit 6 is set.Remaining electricity
Stream protection act setting valve and delay time can be set as needed, and the delay time can be equal to zero, can not also wait
In zero, different settings can be done according to different use environments, it is not limited here.
It should be noted that if the residual current signal that the electronic control unit 6 receives has reached protection act
Setting valve, but the external control centre does not open the instruction of residual current protecting, at this point, the shunt release 9 is still not
It is switched on, only meets two following conditions simultaneously, the shunt release 9 can be just switched on:
1), the electronic control unit 6 receives the instruction that residual current protecting is opened by the external control centre；
2), the residual current signal that the electronic control unit 6 receives reaches protection act setting valve.
Detailed process after being now switched on to the shunt release 9 is described as follows:
Please continue to refer to shown in Fig. 1 and Fig. 3, when the shunt release 9 is switched on, electric current can be generated in the coil 92,
And then 92 surrounding of coil is made to generate magnetic field, the dynamic iron core 91 and the static iron core 94 are magnetized by the magnetic field, thus two
Magnetic attraction is generated between person, when the magnetic attraction is greater than the resistance that the spring 93 provides, the dynamic iron core 91 is to close to described
The direction of static iron core 94 is mobile, after one end of the dynamic iron core 91 passes through the via hole of the static iron core 94, the dynamic iron core 91
The release lever 17 extremely interior with N is set to contacts, and pushes the release lever 17 to move, and then the release lever 17 drives the operation
Mechanism 2 moves, and the operating mechanism 2 drives the moving contact 3 to rotate, and separates the moving contact 3 with the static contact 5 disconnected
It opens, to realize the power-off of major loop, and then realizes the residual current protecting to major loop.Make the moving contact 3 with it is described quiet
The operating mechanism 2 and the release lever 17 that contact 5 separates are the known technologies of field of circuit breakers, herein without being described in detail.
When the electronic control unit 6 receives the instruction for the closing residual current protecting that the external control centre issues
When, the electronic control unit 6 will not then connect the shunt release 9, even if there is arbitrary size in major loop at this time
Residual current value, the shunt release 9 will not drive the moving contact 3 and the static contact 5 to separate to make major loop
Power-off.
As shown in Figures 1 and 2, the N of the two minimal type breakers combined with the pole L and the pole N extremely in be additionally provided with it is surplus
The test device of aftercurrent, the test device include: the first test lead 12, the second test lead 16, test spring 13, survey
Test-run a machine structure 14 and conductive column 15.The pole L electrical connection in one end and major loop of first test lead 12, the other end are worn
It crosses test spring 13 described in the Kong Xinyu of the zero sequence transformer 8 to connect, one end of second test lead 16 and major loop
In the electrical connection of the pole N, the other end connect with the conductive column 15, and setting is isolated with the conductive column 15 in the test spring 13
Form the breakpoint in test loop, the mechanism for testing 14 is placed in the base shell 10, and with the test spring 13
End thereof contacts, in the present embodiment, the test spring 13 are a torsional spring, and support shaft is equipped in the base shell 10, described
Torsional spring 13 is sheathed in the support shaft, and the torsional spring 13 includes the first pin 131 and second pin 132, first pin
131 are connected with first test lead 12, and are fixed in the base shell 10, the second pin 132 and the test
Mechanism 14 is in contact, and the mechanism for testing 14 is set in the base shell 10, and the mechanism for testing 14 is equipped with guide rod 141, institute
Guide rod 141 is stated to be in contact with the second pin 132.It is equipped in the base shell 10 and matches with the mechanism for testing 14
Guide groove (not shown).
When applying a pressure to the mechanism for testing 14, the guide rod 141 is slided along the guide groove of base shell 10, this
When, the second pin 132 is rotated by the pressure from the guide rod 141 to the direction close to the conductive column 15, described
When second pin 132 and conductive column 15 contact, one test current value of test loop conducting and generation, the zero sequence transformer 8
The test current signals monitored can be transmitted to the electronic control unit 6, the electronic control unit 6 receives test electric current
The shunt release 9 can be connected after signal, the shunt release 9 makes moving contact 3 and static contact by the operating mechanism 2
5 separation, complete the test function of residual current protecting.
By the test loop, the security performance of the breaker can be detected, it may be assumed that pass through one test electricity of setting
Flow valuve, can test whether the breaker can normally thread off when residual current occurs, to guarantee the yield of product.
Please continue to refer to shown in Fig. 1, the Rogowski coil 7 is electrically connected with the electronic control unit 6, the pole L major loop
One in conducting wire or the pole N major loop conducting wire passes through the hole heart of the Rogowski coil 7, to realize the real-time prison to loop current
It surveys, and the current signal monitored is constantly transmitted to the electronic control unit 6, the electronic control unit 6 is controlled electronically
The current signal received is transmitted to the external control centre by communication module 11 by unit 6.
As shown in figure 11, the electronic control unit 6 by privates 18 and privates 21 respectively with the L of breaker
Pole load end 19 and the pole N load end 20 are electrically connected, and the voltage by acquiring the pole L load end 19 and the pole N load end 20 simultaneously is believed
Number judge the on/off switch state of breaker, there are certain voltage values when collecting the pole L load end 19 and the pole N load end 20
When, then judge that breaker is in "on" position, when collecting the pole L load end 19 and the pole N 20 voltage of load end, then judges open circuit
Device is in gate-dividing state.The electronic control unit 6 can also be by 20 voltage of the collected pole L load end 19 and the pole N load end
Signal and circuit-breaker status pass through communication module 11 and are transferred to external control centre.
The electronic control unit 6 can be according to the L of the current signal that the Rogowski coil 7 received transmits and itself acquisition
Pole load end 19 and 20 voltage signal of the pole N load end judge the state of breaker, and judgment principle is as follows:
1, when the current signal received is then to break less than or equal to rated working current value and load end is there are certain voltage value
Road device is normal "on" position；
2, when the current signal received is less than or equal to rated working current value and load end no-voltage, then breaker is normal
Gate-dividing state；
3, when the current signal received is greater than rated working current value and load end no-voltage, then breaker is short trouble
Tripping separating brake；
Now to two kinds of different tripping gate-dividing states of breaker, detailed description are as follows:
When breaker is short trouble tripping separating brake, electronic control unit 6 will record breaker in the moment that breaker disconnects
It disconnects previous moment Rogowski coil 7 and is transmitted through the current value come, and starting current accident analysis function.For example, such as Fig. 1, Tu10Ji
Shown in Figure 11, the pole N further includes the first protection buckle releaser 26 and the second protection buckle releaser 27, the first protection buckle releaser 26
For i.e. overload long delay buckle releaser, the second protection buckle releaser 27 is short-circuit instantaneous release, certainly, different breaker systems
Making quotient can select to realize the type protected according to actual needs, and such as overloading long delay protection, short-circuit protection or both has,
This is without limitation.
Specific deterministic process is as follows:
When occurring overload current in major loop, the first protection buckle releaser 26 in breaker is bimetal leaf material, described the
The one protection meeting of buckle releaser 26 by overload current due to accelerating to generate heat, when calorific value accumulates to a certain extent, described first
Protection buckle releaser 26 separates the moving contact 29 and the static contact 28 by the operating mechanism 2, disconnects major loop, from
And the function of overload protection is played to route or equipment.Electronic control unit 6 collects the pole L load end 19 and the load of the pole N at this time
Hold 20 no-voltages, and according to breaker disconnect previous moment described in Rogowski coil 7 to be transmitted through the current value comprehensive descision come be to overload
Fault trip separating brake.
When the overload current occurred in major loop is larger, for example, short circuit current, then the second protection tripping in breaker
Device 27 is short-circuit instantaneous release, can be started rapidly, separates moving contact 29 and static contact 28 by operating mechanism 2, makes to lead back
Road disconnects, and the function of short-circuit protection is played to route or equipment.Similarly, the electronic control unit 6 collects described bear at this time
Carry end no-voltage, and according to breaker disconnect previous moment described in Rogowski coil 7 to be transmitted through the current value comprehensive descision come be short-circuit
Fault trip separating brake.Described in the text makes moving contact 29 and the isolated technology of static contact 28 belong to breaker by operating mechanism 2
The well-known technique in field, therefore be no longer described in detail.
When breaker is normal gate-dividing state, i.e., artificial operation handle 1 makes breaker open operation, similarly, described at this time
Electronic control unit 6 collects the load end no-voltage, and the Rogowski coil 7 according to breaker disconnection previous moment is transmitted through
The current value comprehensive descision come is manual brake separating.Then, the electronic control unit 6 passes through the circuit-breaker status after judgement logical
Letter module 11 is transmitted to the external control centre.
The electronic control unit 6 can also be made according to the current signal that the Rogowski coil 7 received is sent into one
The line status of step is analyzed, and judgment principle is as follows:
1, when the current value received is running current, then judge that line status is normal；
2, when the current value received is overload current, then judge line status for overload；
3, when the current value received is short circuit current, then judge line status for short circuit.
The difference of overload current and short circuit current is the common knowledge in industry, and details are not described herein.
When the size and duration for having served as set current value or short-circuit current value reach predetermined value, the electronic control unit
6 can shunt release 9 described in turn on automatically, shunt release 9 drives operating mechanism 2 to divide moving contact 29 and static contact 28
From reaching the needs of protection circuit and equipment.
Please continue to refer to shown in Figure 11, the working power of the electronic control unit 6 can be in the power supply of circuit breaker internal
End takes electricity, the electronic control unit 6 by the 5th conducting wire 22 and the 6th conducting wire 25 respectively with the pole L power end 23 and described
The power end 24 of the pole N is electrically connected, and can guarantee still there is reliable power supply electron when breaker is in gate-dividing state in this way
Control unit 6 is powered, and allows to work normally, and then is guaranteed and the continual communication of external control centre.Certainly, the electricity
Son control power supply 6 can be connect with the connection type of the pole L power end 23 and the pole N power end 24 using conducting wire, can also
The reliability of electronic control unit 6 and power end electrical connection is realized in a manner of using elastic slice contact, it is not limited here,
It is in such a way that conducting wire connects in the present embodiment.
In another embodiment, as shown in figure 4, can also be used in one power module of exterior arrangement to the electronics control
Unit 6 processed is powered, and is connected with external power source power interface 111 specifically, may be provided in communication module 11, the outside
Power module can be electrically connected by the power interface 111 with the electronic control unit 6, realize electron control unit
6 outside continued powers.
The connection type of the miniature circuit breaker combined with the pole L and the pole N and external control centre includes wire communication
With two kinds of wireless communication, the electronic control unit 6 can be by the communication module 11 with wired communication mode and external control
Center connection processed, mode such as bluetooth, Wifi etc. can also connect by wireless communication with external control centre, realize related data
The communications of information, meanwhile, external control centre can carry out far electronic control unit 6 with wired or wireless communication mode
Journey upgrading.
In a preferred embodiment, it is additionally provided with temperature-sensing element in the electronic control unit 6, open circuit may be implemented
The real-time acquisition of device internal temperature, and collected circuit breaker internal temperature data can be constantly transmitted to by communication module 11
External control centre, external control centre can be analyzed according to the internal temperature and loop current data of breaker, be determined existing
Field causes circuit breaker internal temperature excessively high and then damages the failure of breaker with the presence or absence of the virtual connection of major loop route.
Please continue to refer to shown in Fig. 5, the power end of the breaker is set to left side, and the load end is set to right side, by institute
It states and is placed on horizontal axis (x-axis) in base shell 10 with the setting side of handle 1 corresponding one, the perpendicular bisector of the base shell 10 is set
In the longitudinal axis (y-axis), then four regions that horizontal axis (x-axis) and the longitudinal axis (y-axis) are divided, each region is called a quadrant.It is right
On region be known as first quartile, the region of upper left is known as the second quadrant, and lower left region is known as third quadrant, lower right area
Referred to as fourth quadrant.Then the electronic control unit 6 can be disposed adjacent to power end and be located at the first area of the second quadrant
101, it also can according to need and be placed in the extremely interior any position N, such as close to load end and positioned at the second area of first quartile
102 etc., equally, the electronic control unit 6 can also be split into different units as needed and place described first respectively
Region 101 or second area 102.
Likewise, the zero sequence transformer 8 and Rogowski coil 7, can be set in the first area 101, it can also root
It, can also be by zero sequence transformer 8 or sieve according to needing the two to be placed in the extremely interior any position N, such as the second area 102 simultaneously
One in family name's coil 7 is placed in the first area 101, is then placed in another in Rogowski coil 7 or zero sequence transformer 8
The second area 102.
Fig. 9 is a kind of appearance schematic diagram of the two minimal type breakers combined with the pole L and the pole N of the present invention.Such as Fig. 9 institute
Show, the miniature circuit breaker combined with the pole L and the pole N, the pole N is equipped with narrow portion 30 and width portion, the width of the narrow portion 30
It is equal with the pole the L width a, the width b ratio L pole width a greatly at least 4mm in the wide portion of the pole N, i.e. b-a >=4, and it is wide go out
Position is lower than the narrow portion 30, in this way when original common two pole breaker because functional requirement needs to change as with the pole N and the combination of the pole L
Miniature circuit breaker when, the replacement of product can be realized in the installation dimension that can not have to change first wife's electronic box, reduce product more
The cost changed.
Certainly, the width of the pole L can also be set greater than to the pole N width, at this point, the narrow portion 30 and the zero sequence transformer
8, it is extremely interior to be set to L for Rogowski coil 7, electronic control unit 6, communication module 11 etc..That is: as long as meeting the pole L and the width of the pole N being poor
The installation dimension for not having to change first wife's electronic box at least, which can be realized, in 4mm or more can be realized the replacement of product, at this point, corresponding
Narrow portion 30 setting wider one extremely on.
As shown in figs 6-12, the miniature circuit breaker combined with the pole L and the pole N is by base shell 10, lid shell 32 and by L
Pole and the very effective middle casing 31 separated that insulate of N are assemblied to form, wherein being used for the middle casing of the pole L and the very effective isolation of N
It is provided with the first through hole 311 passed through for the pole L major loop conducting wire 33 and the 5th conducting wire 22 in 31 and is worn for privates 18
The second through-hole 312 crossed.It is that the pole L and the pole N are divided into two relatively independent cavitys that 31 main purpose of middle casing, which is arranged,
Way of realization is by least following two: one kind is to be made of first shell 312 ' and the two independent shells of second shell 311 ',
As shown in Figure 8；Another kind is that the feature of first shell 312 ' and second shell 311 ' is synthesized a shell 31 ', such as Fig. 7 institute
Show.It base shell 10, lid shell 32 and will be provided in the very effective assembled shell of the middle casing 31 that separates that insulate in the pole L and N
The relief hole 34 that can cooperate with the communication module 11, relief hole 34 can be assembled by adjacent shell, can also be independent
It is arranged in some shell.
The base of breaker not only may be implemented in the miniature circuit breaker according to an embodiment of the present invention combined with the pole L and the pole N
This function, and following functions may be implemented: the overload protection and short-circuit protection of equipment or route, to the residue electricity in major loop
Stream, the on off operating mode of the electric current of major loop and breaker, breaker internal temperature carry out real-time monitoring, and can will monitor
Data are uploaded to external control centre in real time, while external control centre can open or close the functions such as residual current protecting,
And external control centre can carry out remote upgrade to electronic control unit, while effectively reduce the installation dimension of breaker.
Multiple functions can be realized by disposably installing the miniature circuit breaker combined with the pole L and the pole N, therefore space can be saved
And cost, and meet low-voltage distribution network hommization and protect the intelligent development needs of power grid security.
The present invention can realize in other specific forms, without departing from its spirit and essential characteristics.Current embodiment
All it is counted as being exemplary rather than in all respects limited, the scope of the present invention is by appended claims rather than above-mentioned retouches
Definition is stated, also, falls into the meaning of claim and whole changes in the range of equivalent to all be included in the present invention
Range among.
Claims (18)
1. a kind of two minimal type breakers combined with the pole L and the pole N, the pole N contact system is earlier than the pole L contact system
Closure, be later than the pole L contact system disconnection, the breaker include: shell, handle (1), operating mechanism (2), at least one
Protect buckle releaser, shunt release (9), moving contact (3), static contact (5), zero sequence transformer (8), electronic control unit (6) and
Communication module (11), the pole the L major loop conducting wire and the pole N major loop conducting wire both pass through the hole heart of the zero sequence transformer (8),
It is characterized in that, the zero sequence transformer (8) and the shunt release (9) electrically connect with the electronic control unit (6) respectively
It connects, the communication module (11) and the electronic control unit (6) are electrically connected, and can be with external control centre with wired or nothing
Line mode connects, and the external control centre presets protection act value in the electronic control unit (6) by correspondence and opens
It opens, close defencive function.
2. the two minimal type breakers combined as described in claim 1 with the pole L and the pole N, which is characterized in that the protection act
Value includes action current setting valve and the action delay time of residual current protecting function.
3. the two minimal type breakers combined as described in claim 1 with the pole L and the pole N, which is characterized in that the zero-sequence mutual inductance
Device (8) continues to send to the external control centre remaining by the electronic control unit (6) and the communication module (11)
Current information.
4. the two minimal type breakers combined as described in claim 1 with the pole L and the pole N, which is characterized in that further include Roche line
It encloses (7), one in the pole L major loop conducting wire or the pole N major loop conducting wire passes through the Rogowski coil (7), the Rogowski coil (7)
It is electrically connected with the electronic control unit (6), the external control centre or the electronic control unit (6) are according to sieve
The collected current value of family name's coil (7) and circuit-breaker switching on-off state judge the state of breaker.
5. the two minimal type breakers combined as claimed in claim 4 with the pole L and the pole N, which is characterized in that the electronic control
Unit (6) judges overload fault electric current whether occurs in major loop according to the Rogowski coil (7) collected electric current, such as leads back
Overload fault electric current occurs in road, the electronic control unit (6) connects shunt release (9) circuit, makes breaker point
Lock.
6. the two minimal type breakers combined as described in claim 1 with the pole L and the pole N, which is characterized in that the electronic control
Unit (6) can be set to the extremely interior close power end of breaker N and be located at the first area (101) of the second quadrant or be provided close to bear
It carries end and is located at the second area (102) of first quartile.
7. the two minimal type breakers combined as claimed in claim 4 with the pole L and the pole N, which is characterized in that the zero-sequence mutual inductance
It is extremely interior close to power end and positioned at the first area of the second quadrant that N can be arranged in device (8) and the Rogowski coil (7) simultaneously
(101) or close to load end and be located at first quartile second area (102), or be divided into the first area (101) and
The second area (102).
8. the two minimal type breakers combined as described in claim 1 with the pole L and the pole N, which is characterized in that the protection tripping
Device is that short-circuit instantaneous release (26) and overload long delay buckle releaser (27) one or both of them are arranged simultaneously.
9. the two minimal type breakers combined according to claim 4 with the pole L and the pole N, which is characterized in that the breaker
State includes:
Breaker is in closing by hand state；
Since current overload is to making breaker overload long delay buckle releaser movement disconnect breaker, breaker is in disjunction shape
State；
Since current overload is to making the movement of circuit breaker short circuit instantaneous release disconnect breaker, breaker is in disjunction state；
Due to manual brake separating, breaker is in disjunction state.
10. the two minimal type breakers combined as claimed in claim 4 with the pole L and the pole N, which is characterized in that breaker disjunction
State carries out comprehensive descision according to the circuit breaker load terminal voltage value detected.
11. the two minimal type breakers combined as described in claim 1 with the pole L and the pole N, which is characterized in that the electronics control
Unit (6) processed can also can take electricity in circuit breaker internal by external power supply.
12. the two minimal type breakers combined as described in claim any one of 1-11 with the pole L and the pole N, which is characterized in that institute
The width difference of the pole L and the pole N breaker is stated not less than 4mm.
13. the two minimal type breakers combined as claimed in claim 12 with the pole L and the pole N, which is characterized in that described wider
One pole is equipped with narrow portion (30) and width portion, and the narrow portion (30) is higher than the width portion.
14. the two minimal type breakers combined as described in claim any one of 1-11 with the pole L and the pole N, which is characterized in that institute
It states shell and contains at least one base shell (10), a lid shell (32) and the middle casing (31) for separating the pole L and the pole N.
15. the two minimal type breakers combined as claimed in claim 14 with the pole L and the pole N, which is characterized in that the centre
Shell (31) includes first shell (312 ') and second shell (311 '), the first shell (312 ') and second shell (311 ')
It separately formed can assemble afterwards, can also be integrally formed.
16. the two minimal type breakers combined as described in claim 1 or claim 4 with the pole L and the pole N, which is characterized in that
It further include residual current test device, the test device is electrically connected between the pole L and the pole N, mutual also cross the zero sequence
The hole heart of sensor (8) is provided with breakpoint in the test device, and test loop can be switched on or switched off by the breakpoint.
17. the two minimal type breakers combined described in -9 any one with the pole L and the pole N according to claim 1, which is characterized in that
The electronic control unit (6) is carried out with the external control centre in a wired or wireless fashion by the communication module (11)
Communication, the external control centre can remotely be risen by electronic control unit described in wired or wireless communication mode pair (6)
Grade, the communication can be one of modes such as bluetooth, Wifi.
18. the two minimal type breakers combined described in any one with the pole L and the pole N according to claim 1 ~ 11, which is characterized in that
Temperature-sensing element is provided in the electronic control unit (6), the temperature-sensing element can be to the temperature of circuit breaker internal
Degree carries out real-time monitoring, and the temperature data monitored can be transmitted to the external control by the electronic control unit (6)
Center processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910057413.6A CN109817495A (en) | 2019-01-22 | 2019-01-22 | A two-pole miniature circuit breaker with a combination of L and N poles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910057413.6A CN109817495A (en) | 2019-01-22 | 2019-01-22 | A two-pole miniature circuit breaker with a combination of L and N poles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109817495A true CN109817495A (en) | 2019-05-28 |
Family
ID=66604726
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910057413.6A Pending CN109817495A (en) | 2019-01-22 | 2019-01-22 | A two-pole miniature circuit breaker with a combination of L and N poles |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504142A (en) * | 2019-07-05 | 2019-11-26 | 天津京人电器有限公司 | A kind of small-sized DC circuit breaker with electrically operated institution |
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