CN107154544A - A kind of magnetic quenching MC4 connectors for photovoltaic plant - Google Patents
A kind of magnetic quenching MC4 connectors for photovoltaic plant Download PDFInfo
- Publication number
- CN107154544A CN107154544A CN201710514819.3A CN201710514819A CN107154544A CN 107154544 A CN107154544 A CN 107154544A CN 201710514819 A CN201710514819 A CN 201710514819A CN 107154544 A CN107154544 A CN 107154544A
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- magnetic field
- intensity magnetic
- connecting piece
- unit
- field unit
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- 238000010791 quenching Methods 0.000 title claims abstract description 26
- 230000000171 quenching effect Effects 0.000 title claims abstract description 26
- 238000010891 electric arc Methods 0.000 claims abstract description 48
- 239000002184 metal Substances 0.000 claims abstract description 37
- 229910052751 metal Inorganic materials 0.000 claims abstract description 37
- 230000000694 effects Effects 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 10
- 230000008033 biological extinction Effects 0.000 claims description 4
- 230000000386 athletic effect Effects 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 22
- 229910052742 iron Inorganic materials 0.000 description 11
- 230000005684 electric field Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000003574 free electron Substances 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 241001282153 Scopelogadus mizolepis Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012913 prioritisation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
Abstract
It is an object of the invention to disclose a kind of magnetic quenching MC4 connectors for photovoltaic plant, in view of the shortcomings of the prior art, the present invention adds two high-intensity magnetic field units around traditional MC4 wiring units；The electric arc of MC4 connection units generation can be effectively broken, the effect of arc extinguishing is served, and then alleviates the loss of MC4 connection unit metal connecting pieces, while avoiding electric arc from causing MC4 connection unit high temperature on fire.
Description
Technical field
It is to be related to one kind to be used for photovoltaic plant in particular the present invention relates to photovoltaic plant security protection technology field
Magnetic quenching MC4 connectors
Background technology
With the fast development of photovoltaic plant, the security in power station is more opened more to be paid close attention to by people, and MC4 electric wire connecting junctions are light
The key device that power line is connected in overhead utility, it is necessary to the reliable electric current for connecting and bearing under normal circumstances.
There is situation about much burning in current photovoltaic plant, and causes huge economic losses and damage to person, and these are fiery
The inducement of calamity is all due to much that MC4 electric wire connecting junctions are produced caused by electric arc.
Traditional MC4 wiring units have two metal connecting pieces 1 and metal connecting piece 2, due to construction worker's Rig up error,
Or metal surface is by long-term oxide etch, the contact surface between connector will form gap, cause loose contact, now
If circuit voltage is not less than 10-20 volts, electric current is not less than 80~100mA, and the contact surface of connector will produce electric arc.Tool
The electric arc of body is formed as the gap very little of connector, electric-field intensity E very high (E=U/d), when electric-field intensity is more than 3*10^
During 6V/m, the electronics of cathode surface will be pulled out and be formed the free electron in connector gap by electric field force, in electric field force
Make to anode constantly to collide with electronic atom in clearance air in accelerated motion way under effect, as long as the movement velocity v of electronics
Sufficiently high, the kinetic energy A=mv^2 of electronics is sufficiently large, it is possible to electronics is got from air, forms free electron and cation, newly
The free electron of formation is also accelerated to anode, can equally be collided generation and be dissociated, the result that ionization by impact is carried out continuously is
Connector gap is filled with electronics and cation, with very big conductance；Under the pressure difference at two ends, gap dielectric is breakdown and produces
Raw electric arc.Electric arc is the free gas of high temperature high conductivity, and it not only has very big destruction, Er Qie to metal connecting piece
Under continuous high arc temperature, can cause the temperature of MC4 shells causes MC4 wiring units on fire to burning-point, and then may trigger big
Scale fire, but the method that existing patented technology not yet proposes effective MC4 connectors arc extinguishing.
Prior art can realize that the method for protection MC4 electric wire connecting junctions is by installing fuse and LED additional in MC4 electric wire connecting junctions.
But above-mentioned install fuse unit additional there are the following problems：The high temperature that electric arc triggers causes device to catch fire, the device
Can not effectively it avoid.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of magnetic quenching for photovoltaic plant
MC4 connectors, with solve connector because of electric arc and caused by destruction.
The present invention is achieved by the following technical solutions：A kind of magnetic quenching MC4 connectors for photovoltaic plant, bag
Include connecting piece unit and high-intensity magnetic field unit；
Wherein, the connecting piece unit, including the first metal connecting piece and the second metal connecting piece, first metal connect
Fitting one end is connected with power line, and described second metal connecting piece one end is connected with power line, first metal connecting piece
The other end mutual-inserting type connection of the other end and the second metal connecting piece；
The high-intensity magnetic field unit, including the first high-intensity magnetic field unit and the second high-intensity magnetic field unit, the first high-intensity magnetic field unit
The upside of connecting piece unit junction is arranged at, the second high-intensity magnetic field unit is symmetricly set under connecting piece unit junction
Side.
It is preferred that, the first high-intensity magnetic field unit is located above connecting piece unit junction, the N poles of the first high-intensity magnetic field unit
Point to the second high-intensity magnetic field unit；The second high-intensity magnetic field unit is located at below connecting piece unit junction, the second high-intensity magnetic field unit
S poles point to the first high-intensity magnetic field unit；The first high-intensity magnetic field unit and the second high-intensity magnetic field unit are arranged in parallel, high-intensity magnetic field
Form the magnetic field that the second high-intensity magnetic field unit is pointed to from the first high-intensity magnetic field unit between unit, direction perpendicular to the sense of current and
High-intensity magnetic field face.
A kind of magnetic quenching method of magnetic quenching MC4 connectors for photovoltaic plant, in former traditional MC4 connectors
Upper addition high-intensity magnetic field unit, in electric arc charged particle in magnetic field athletic meeting by a sufficiently strong Lorentz force, its direction
Vertically with magnetic direction and electronics flow direction, after loose contact produces electric arc i between connector, the effect meeting of Lorentz force
So that charging particle movement direction produces deflection in electric arc, so as to break electric arc, shorten the time of arc extinction.
Compared with prior art, invention increases a high-intensity magnetic field unit, the generation of MC4 connection units can effectively be broken
Electric arc, serves the effect of arc extinguishing, and then alleviates the loss of MC4 connection unit metal connecting pieces, while avoiding electric arc from causing
MC4 connection unit high temperature is on fire.
Brief description of the drawings
Fig. 1 is a kind of magnetic quenching of magnetic quenching MC4 connectors for photovoltaic plant provided in an embodiment of the present invention
Schematic diagram；
Fig. 2 is a kind of external magnetic field magnetic blow-out of magnetic quenching MC4 connections for photovoltaic plant provided in an embodiment of the present invention
Arc quenching principle figure；
Fig. 3 is a kind of structural representation of magnetic quenching MC4 connectors for photovoltaic plant provided in an embodiment of the present invention
Figure；
Fig. 4 is a kind of utilization arc of magnetic quenching MC4 connectors for photovoltaic plant provided in an embodiment of the present invention
Magnet as magnetic field units apparatus structure schematic diagram；
Fig. 5 is a kind of utilization electromagnetism of magnetic quenching MC4 connectors for photovoltaic plant provided in an embodiment of the present invention
It is used as the apparatus structure schematic diagram of magnetic field units.
Embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out lower premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementations
Example.
A kind of magnetic quenching MC4 connectors for photovoltaic plant that the present embodiment is provided, side view (refers to accompanying drawing 1),
Including：Connecting piece unit, high-intensity magnetic field unit；
10 points of the connecting piece unit is the first metal connecting piece 1 and the second metal connecting piece 2, the first metal connecting piece 1
One end is connected with power line, and the one end of the second metal connecting piece 2 is connected with power line, and the first metal connecting piece 1 and the second metal connect
The other end of fitting 2 carries out mutual-inserting type connection.Contact surface shape between the first metal connecting piece 1 and the second metal connecting piece 2
Into gap, loose contact is caused, if now circuit voltage is not less than 10-20 volts, electric current is not less than 80~100mA, connector
Contact surface will produce electric arc i.
11 points of the high-intensity magnetic field unit is the first high-intensity magnetic field unit 3 and the second high-intensity magnetic field unit 4, wherein the first high-intensity magnetic field list
Member 3 is located above connector junction, and the second high-intensity magnetic field unit 4 is pointed in the N poles of the first high-intensity magnetic field unit 3.Second high-intensity magnetic field list
Member 4 is located at below connector junction, and the first high-intensity magnetic field unit 3, the first high-intensity magnetic field list are pointed in the S poles of the second high-intensity magnetic field unit 4
The high-intensity magnetic field unit 4 of member 3 and second is parallel to each other.One is formed between high-intensity magnetic field unit and points to second from the first high-intensity magnetic field unit 3
The magnetic field B of high-intensity magnetic field unit 4 (direction is perpendicular to the sense of current and high-intensity magnetic field face).
Technical scheme provides the side view (referring to accompanying drawing 2) at another following visual angle to illustrate, figure includes
Connecting piece unit and an outside high-intensity magnetic field；
The outside magnetic field is that (direction is perpendicular to the sense of current and strong magnetic by the generation of the medium-high magnetic field unit of side view 1
Scene).
With reference to above-mentioned two width figure, a kind of magnetic quenching method of magnetic quenching MC4 connectors for photovoltaic plant, in original
High-intensity magnetic field unit is added on traditional MC4 connectors, charged particle athletic meeting in magnetic field is sufficiently strong by one in electric arc
Lorentz force, its direction vertically with magnetic direction and electronics flow direction, when between connector loose contact produce electric arc i after,
The effect of Lorentz force can make it that charging particle movement direction produces deflection in electric arc, so as to break electric arc, shorten arc extinction
Time.
Influenceed to be pulled off by Lorentz force according to preset rules electric arc i, shorten the time of extinguishing, and then reduced
MC4 wiring units elements are destroyed because of electric arc, or even high temperature catches fire, and greatly reduce the generation of photovoltaic plant security incident.
The present invention adds two high-intensity magnetic field units in traditional MC4 wiring units, respectively positioned at connector junction
Both sides, the first high-intensity magnetic field unit 3 must be parallel to each other with high-intensity magnetic field unit 4, now the first high-intensity magnetic field unit 3 and high-intensity magnetic field unit
A high-intensity magnetic field B can be produced between 4, according to electrodynamics principle, band point Particles Moving (can be claimed in magnetic field by an active force
Be Lorentz force), Lorentz force equation is:
F=q (E+v*B)
Q is the quantity of electric charge of charged particle, and E is electric-field intensity, and v is the speed of charged particle, and B is magnetic induction intensity, thus
It can be seen that in the case that q, v are constant, electric-field intensity is stronger with magnetic induction intensity, F Lorentz forces are also bigger.When electric arc occurs
Connector gap can inherently form a larger voltage difference U, according to formula：
U=Ed
D is clearance distance, and minimum clearance distance adds larger voltage difference, causes electric-field intensity E very big, along with this
The high-intensity magnetic field unit that technological invention is used, in electric arc charged particle can by a sufficiently strong Lorentz force F (direction vertically with
Magnetic direction and electronics flow direction) so that charging particle movement direction produces deflection in electric arc, so as to break electric arc, shortens
The time of arc extinction, and then reduce MC4 wiring units elements and destroyed because of electric arc, or even high temperature catches fire, and substantially reduces
The generation of photovoltaic plant security incident.
Embodiment one
The present embodiment refers to accompanying drawing 3, including：MC4 connectors male end 1 (herein referring to the first connector), MC4 connectors are female
2 (herein referring to the second connector) of end, permanent magnet 3 (herein referring to the first high-intensity magnetic field unit), permanent magnet 4 (herein refer to the second high-intensity magnetic field
Unit) specifically, the A sides of above-mentioned MC4 connectors male end are connected with power line；The B sides of above-mentioned MC4 connectors female end and power line
Connection；In MC4 connector male end opposite sides in metal connecting piece and MC4 connector female end opposite sides metal connecting piece with to inserting side
Formula is connected；It is above-mentioned that electric arc 6 can be produced to slotting gap；Above-mentioned permanent magnet 3 be fixed in MC4 connector male ends metal connecting piece with
Metal connecting piece is to inserting place C sides in MC4 connector female ends, and the polarity S of permanent magnet 3 is extremely away from MC4 connector units, the pole of permanent magnet 3
MC4 connector units are pressed close in property N poles；Above-mentioned permanent magnet 4 is fixed on metal connecting piece and MC4 connectors in MC4 connector male ends
Metal connecting piece presses close to MC4 connector units to inserting place D sides, the polarity S pole of permanent magnet 4 in female end, and the polarity N of permanent magnet 3 is extremely remote
MC4 connector units；Above-mentioned permanent magnet 3 is parallel to each other with permanent magnet 4, and one is produced between permanent magnet 3 and permanent magnet 4 from C sides
The magnetic field B of D sides is pointed to, electric arc can be pulled to perpendicular to plane outwardly direction according to preset rules magnetic field B until breaking.
The preset rules are：
In electric arc i charged particle can by a sufficiently strong Lorentz force F (direction vertically with magnetic direction and electron stream
Dynamic direction) so that charging particle movement direction produces deflection in electric arc i, so as to break electric arc；
It can be seen that, the MC4 connection unit magnetic quenching methods that the present invention is provided, compared to existing technology, add two
High-intensity magnetic field unit, the effective arc extinguishing on electric arc MC4 connection units occurred frequently, it is to avoid component wear is on fire, greatly improves
The overall security of photovoltaic plant.
Embodiment two
On the basis of above-described embodiment, a kind of high-intensity magnetic field prioritization scheme of arc, its structure chart are present embodiments provided
See that accompanying drawing 4, including arcuate permanent magnetic iron 3 (herein referring to the first high-intensity magnetic field unit), arcuate permanent magnetic iron 4 (herein refer to the second high-intensity magnetic field list
Member), MC4 shells 7, metal connecting piece 10.
There is the special groove for placing arcuate permanent magnetic iron 1 and arcuate permanent magnetic iron 2 on specific above-mentioned MC4 shells, the two grooves are used
Arcuate permanent magnetic iron needed for placement and technique for fixing scheme；Above-mentioned metal connecting piece is located in the middle of MC4 shells；Electric arc is typically sent out
Life is in metal connecting piece to slotting gap location；MC4 shells are pressed close in the N poles of above-mentioned arcuate permanent magnetic iron 1, and arcuate permanent magnetic iron 1 is sent out from N poles
Project a high-intensity magnetic field for pointing to arcuate permanent magnetic iron 2；MC4 shells are pressed close in the S poles of above-mentioned arcuate permanent magnetic iron 2, and it just absorbs arc
The high-intensity magnetic field that shape permanent magnet 1N poles are emitted；Formed between above-mentioned arcuate permanent magnetic iron 1 and arcuate permanent magnetic iron 2 one it is stable
High-intensity magnetic field its be mutually perpendicular to electric arc direction；Electric arc can be pulled outwardly according to the preset rules high-intensity magnetic fields (direction both perpendicular to
High-intensity magnetic field and direction of current flow) until breaking.
The preset rules are：
The nearlyer C of high-intensity magnetic field, D both sides, magnetic field intensity is also bigger, and electric arc is when by high-intensity magnetic field toward C sides or D laybacks, more
Close to C, Lorentz force suffered by D both sides is bigger, and electric arc is easier to be pulled off
It can be seen that, the MC4 connection unit magnetic quenching methods that the present invention is provided, compared to existing technology, add two
High-intensity magnetic field unit, the effective arc extinguishing on electric arc MC4 connection units occurred frequently, it is to avoid component wear is on fire, greatly improves
The overall security of photovoltaic plant.
Embodiment three
The present embodiment offer is a kind of to replace the arc-control device of high-intensity magnetic field unit using electromagnetism, and its structure chart is shown in accompanying drawing 5, wraps
Include MC4 connectors male end 1 (herein referring to the first connector), MC4 connectors female end 2 (herein referring to the second connector), calutron
11st, electromagnetic power line 12.
Specifically, the A sides of above-mentioned MC4 connectors male end are connected with power line；The B sides of above-mentioned MC4 connectors female end and electricity
The line of force is connected；In MC4 connector male end opposite sides on the left of metal connecting piece and the MC4 connectors other end in metal connecting piece with right
Slotting mode is connected；Two calutrons are located at MC4 connectors to inserting the relative CD both sides in place respectively.The electricity of above-mentioned two calutron
The line of force is connected power taking with MC4 connector male end female ends respectively, and arc extinguishing work can be equally played according to preset rules calutron
With.
The preset rules are：
When the connection of MC4 connectors is normal, male end pressure difference would not occur with female end, and calutron does not work.
When the connection loose contact of MC4 connectors produces electric arc, pressure difference will be produced between male end and female end, is now distinguished
The calutron at connection male and female two ends, which will work, produces magnetic field B, and magnetic field B magnetic field intensity can increase with MC4 connectors electric current
It is big and increase, Lorentz force F in the bigger electric arc i of magnetic field intensity suffered by charged particle (direction vertically with magnetic direction and electricity
Sub- flow direction) it is bigger, charging particle movement direction produces deflection in electric arc i therewith, so that electric arc is pulled off.
It can be seen that, the MC4 connection unit magnetic quenching methods that the present invention is provided, compared to existing technology, add two
High-intensity magnetic field unit, the effective arc extinguishing on electric arc MC4 connection units occurred frequently, it is to avoid component wear is on fire, greatly improves
The overall security of photovoltaic plant.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (3)
1. a kind of magnetic quenching MC4 connectors for photovoltaic plant, it is characterised in that including connecting piece unit and high-intensity magnetic field list
Member；
Wherein, the connecting piece unit, including the first metal connecting piece and the second metal connecting piece, first metal connecting piece
One end is connected with power line, and described second metal connecting piece one end is connected with power line, first metal connecting piece it is another
The other end mutual-inserting type of end and the second metal connecting piece is connected；
The high-intensity magnetic field unit, including the first high-intensity magnetic field unit and the second high-intensity magnetic field unit, the first high-intensity magnetic field unit are set
Upside in connecting piece unit junction, the second high-intensity magnetic field unit is symmetricly set in the downside of connecting piece unit junction.
2. a kind of magnetic quenching MC4 connectors for photovoltaic plant according to claim 1, it is characterised in that：It is described
First high-intensity magnetic field unit is located above connecting piece unit junction, and the second high-intensity magnetic field unit is pointed in the N poles of the first high-intensity magnetic field unit；
The second high-intensity magnetic field unit is located at below connecting piece unit junction, and the first high-intensity magnetic field is pointed in the S poles of the second high-intensity magnetic field unit
Unit；The first high-intensity magnetic field unit and the second high-intensity magnetic field unit are arranged in parallel, between high-intensity magnetic field unit formed one from
First high-intensity magnetic field unit points to the magnetic field of the second high-intensity magnetic field unit, and direction is perpendicular to the sense of current and high-intensity magnetic field face.
3. according to a kind of any described magnetic quenching MC4 connectors for photovoltaic plant of claim 1-2, its feature exists
In：A kind of magnetic quenching method of magnetic quenching MC4 connectors for photovoltaic plant, adds on former traditional MC4 connectors
Strengthening charged particle in magnetic field units, electric arc, athletic meeting is by a sufficiently strong Lorentz force in magnetic field, and its direction is vertical
With magnetic direction and electronics flow direction, after loose contact produces electric arc i between connector, the effect of Lorentz force can cause
Charging particle movement direction produces deflection in electric arc, so as to break electric arc, shortens the time of arc extinction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710514819.3A CN107154544A (en) | 2017-06-29 | 2017-06-29 | A kind of magnetic quenching MC4 connectors for photovoltaic plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710514819.3A CN107154544A (en) | 2017-06-29 | 2017-06-29 | A kind of magnetic quenching MC4 connectors for photovoltaic plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107154544A true CN107154544A (en) | 2017-09-12 |
Family
ID=59795634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710514819.3A Pending CN107154544A (en) | 2017-06-29 | 2017-06-29 | A kind of magnetic quenching MC4 connectors for photovoltaic plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107154544A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134230A (en) * | 2017-12-13 | 2018-06-08 | 贵州航天电器股份有限公司 | A kind of hot-swappable electric connector |
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| CN102664206A (en) * | 2012-05-30 | 2012-09-12 | 莱尼电气线缆（常州）有限公司 | Solar junction box |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134230A (en) * | 2017-12-13 | 2018-06-08 | 贵州航天电器股份有限公司 | A kind of hot-swappable electric connector |
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Application publication date: 20170912 |
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