CN202550291U - Contactor module and photovoltaic grid connection inversion device - Google Patents
Contactor module and photovoltaic grid connection inversion device Download PDFInfo
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- CN202550291U CN202550291U CN2012201035517U CN201220103551U CN202550291U CN 202550291 U CN202550291 U CN 202550291U CN 2012201035517 U CN2012201035517 U CN 2012201035517U CN 201220103551 U CN201220103551 U CN 201220103551U CN 202550291 U CN202550291 U CN 202550291U
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- contactor
- copper bar
- contactor module
- outlet
- supporting bracket
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 78
- 239000010949 copper Substances 0.000 claims abstract description 78
- 229910052802 copper Inorganic materials 0.000 claims abstract description 78
- 238000004804 winding Methods 0.000 claims description 19
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 238000005755 formation reaction Methods 0.000 claims description 8
- 230000000875 corresponding Effects 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 230000037250 Clearance Effects 0.000 description 1
- 210000004940 Nucleus Anatomy 0.000 description 1
- 230000035512 clearance Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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Abstract
The utility model provides a contactor module which comprises a fixing plate and contactors arranged on the fixing plate, wherein the a plurality of groups contactors are adopted, and the number of the groups of the contactors is an integral multiple of three, and the plurality of groups of contactors are mounted in parallel on the fixing plate; and in each group of contactors, a wire incoming end of a single contactor is led out through a wire incoming copper bar to form a wire incoming terminal, and a wire outgoing end of the contactor is led out through a wire outgoing copper bar to form a wire outgoing terminal. Accordingly, the utility model provides a photovoltaic grid connection inversion device. By using the contactor module, the flow equalization of each branch can be effectively improved, and at the same time the cost is relatively low.
Description
Technical field
The utility model belongs to the photovoltaic power generation technology field, the photovoltaic network inverter that is specifically related to a kind of contactor module and uses this contactor module.
Background technology
Solar energy is safe and reliable with it, noiseless, pollution-free, do not receive advantages such as region restriction, failure rate are low, easy maintenance to be widely used in the every field of social life, particularly be applied to the pv grid-connected plant system.
The high-power photovoltaic synchronization inverter is the nucleus equipment of photovoltaic plant.It comprises multiple devices such as combining inverter, A.C. contactor.In photovoltaic network inverter; The input of combining inverter is connected with the output of photovoltaic array; The direct current that produces in the photovoltaic array perhaps further converts to through step-up transformer in combining inverter and meets the alternating current that electrical network requires, and alternating current directly inserts electrical network through the A.C. contactor that is connected with the combining inverter output.
At present, in photovoltaic network inverter, the general A.C. contactor that adopts of the A.C. contactor of output AC electricity with No. three contact-making switches, promptly this A.C. contactor has three tunnel ends of incoming cables and three road leading-out terminals respectively.The input terminal and the outlet terminal wiring of the A.C. contactor of use said structure are comparatively simple, need not in advance input terminal or outlet terminal to be made up earlier; But also there is the relatively poor shortcoming of equal properties of flow of each branch road simultaneously in this A.C. contactor, possibly cause the inversion device in certain branch road to damage because of electric current is excessive, and the weight of A.C. contactor is heavier relatively, causes its installation and later maintenance all difficult; In addition, since high-power grid-connected inverting system for the overcurrent class requirement of withstand voltage and every branch road of contactor all than higher, so the type selecting of contactor is also higher with buying relative difficult, the cost of other cooperation devices.Thereby; Cause the volume and weight of high-power photovoltaic synchronization contravariant device all relatively large accordingly; Cause inverter carrying, installation and inverter machine room construction all the difficulty; So, how reducing the volume and weight of parallel network reverse device as far as possible, the cost that reduces inverter simultaneously becomes problem demanding prompt solution.
The utility model content
The utility model technical problem to be solved is to the above-mentioned deficiency of existing in prior technology, and a kind of contactor module and photovoltaic network inverter are provided, and this contactor module can effectively improve the current sharing of each branch road, and is in light weight, and cost is lower.
The technical scheme that solution the utility model technical problem is adopted is that this contactor module comprises fixed head and is located at the contactor on the said fixed head; Wherein, said contactor adopts many groups, and the group number of contactor is three integral multiple; Said many windings tentaculum is installed on the fixed head side by side; In every winding tentaculum, the formation input terminal is drawn through the inlet wire copper bar in the end of incoming cables of said single contactor, and its leading-out terminal is drawn the formation outlet terminal through the outlet copper bar.
Preferably, in every winding tentaculum, include a plurality of ends of incoming cables and a plurality of leading-out terminal in the single contactor, said a plurality of ends of incoming cables are respectively drawn through an inlet wire copper bar and are formed a plurality of input terminals; Said a plurality of leading-out terminal is drawn through the parallel connection of an outlet copper bar and is formed a common outlet terminal jointly, and each is connected promptly said a plurality of ends of incoming cables with an inlet wire copper bar, and said a plurality of leading-out terminals link together with same outlet copper bar respectively.Through this connected mode, can effectively improve the equal properties of flow of each branch road of circuit.
Further preferably; Include a contactor in said every winding tentaculum; This contactor comprises three ends of incoming cables and three leading-out terminals, the inlet wire copper bar that is connected with said each end of incoming cables be shaped as strip, said outlet copper bar be shaped as " mountain " font; One end of said " mountain " font outlet copper bar includes three branches, and said three branches are connected with three leading-out terminals of contactor respectively.Like this, can make that three leading-out terminals of this contactor are connected in parallel together through " mountain " font outlet copper bar in said this winding tentaculum, each " mountain " font outlet copper bar constitutes an outlet terminal of this contactor module.
Perhaps; Include two or more contactors in said every winding tentaculum; Wherein each contactor comprises three ends of incoming cables and three leading-out terminals, the inlet wire copper bar that is connected with said each end of incoming cables be shaped as strip, the rake type that is shaped as of said outlet copper bar; One end of this rake type outlet copper bar includes a plurality of branches, and each leading-out terminal in said a plurality of branches and the every winding tentaculum in two or more contactors is connected respectively.Like this, can make all leading-out terminals of the two or more contactors in this winding tentaculum be connected in parallel together through rake type outlet copper bar, each rake type outlet copper bar constitutes an outlet terminal of contactor module.Because the connection copper bar in this contactor module can fully expose from contactor, thereby can make things convenient for and being connected of other devices.
Preferably; Said outlet copper bar is provided with equal discharge orifice; Equal discharge orifice on the said outlet copper bar is arranged on the position corresponding with said branch, middle part of " mountain " font or rake type outlet copper bar, and it is shaped as strip, and its length direction is identical with the orientation of said branch.
Preferably, also include supporting bracket in this contactor module, said each contactor is installed on the said supporting bracket, and said supporting bracket is arranged on the said fixed head.Between contactor and fixed head, supporting bracket is set and increases the safe distance between copper bar (inlet wire copper bar or outlet copper bar) and the fixed head that is connected on each contactor, the fail safe of contactor module is provided.
Preferred said supporting bracket is square, and the length of supporting bracket is more than or equal to the overall width of a plurality of contactors, and said a plurality of contactors pass through bolt or screw respectively on supporting bracket.
Further preferably, said supporting bracket adopts to be covered the aluminium zine plate and processes, and the thickness of said supporting bracket is more than or equal to 2.5mm.
Preferably, said fixed head adopts and covers the aluminium zine plate and process, and the thickness of said fixed head is more than or equal to 2.5mm.
A kind of photovoltaic network inverter comprises the contactor module, and said contactor module adopts above-mentioned contactor module.
Preferably, said device also includes cabinet, and said contactor module is installed on the inwall of said cabinet.
The utility model can be met the contactor module that higher overcurrent requires through adopting lower-cost a plurality of contactor to be connected in parallel, and this contactor module cost is lower, and the circuit current sharing is better.
The beneficial effect of the utility model contactor module is following:
1. owing to being connected in parallel by a plurality of independently contactors, the contactor module forms; And the end of incoming cables of contactor module and leading-out terminal all adopt the inlet wire copper bar and the outlet copper bar that fully expose to draw; Connected mode is simple; And be convenient to carrying, installation and the later maintenance of contactor module, also make things convenient for being connected of contactor module and other devices simultaneously;
2. the formation because a plurality of independently contactors of contactor module employing are connected in parallel; So to independently the electric parameter of contactor (mainly being the overcurrent parameter) is less demanding; Make this contactor module can satisfy the requirement of higher overcurrent, thereby make the cost of contactor module reduce greatly through adopting the cost independent contactor less than low capacity;
3. the end of incoming cables of each contactor and leading-out terminal adopt inlet wire copper bar and outlet copper bar to draw in the contactor module, have improved the equal properties of flow of each branch road effectively;
4. after using this contactor module; Make in high-power photovoltaic synchronization contravariant device; Reach same electric parameter; Wherein employed contactor module can be formed by the parallel connection of a plurality of independently contactors, and the volume and weight (such as 20kg) that these a plurality of independently contactor volumes (for half of former contactor), weight (such as 5kg) can more existing contactors reduces greatly.
Description of drawings
Fig. 1 is the structural representation of contactor module among the utility model embodiment 1;
Fig. 2 is the three-dimensional structure diagram of contactor module among Fig. 1;
Fig. 3 is the structural representation of contactor module among the utility model embodiment 2.
Among the figure: 1-first contactor; 2-second contactor; 3-the 3rd contactor; The 4-supporting bracket; The 5-fixed head; The 6-end of incoming cables; 7-inlet wire port; 8-inlet wire copper bar; The 9-leading-out terminal; 10-outlet port; 11-outlet copper bar; The equal discharge orifice of 12-.
Embodiment
For making those skilled in the art understand the technical scheme of the utility model better, the utility model contactor module and photovoltaic network inverter are described in further detail below in conjunction with accompanying drawing and embodiment.
A kind of contactor module; Comprise fixed head and be located at the contactor on the said fixed head, said contactor adopts many groups, and the group number of said contactor is three integral multiple; Said many windings tentaculum is installed on the fixed head side by side; In every winding tentaculum, the formation input terminal is drawn through the inlet wire copper bar in the end of incoming cables of said single contactor, and its leading-out terminal is drawn the formation outlet terminal through the outlet copper bar.
Embodiment 1:
Like Fig. 1, shown in 2, in the present embodiment, this contactor module comprises fixed head 5, supporting bracket 4 and contactor.
In the present embodiment, said contactor adopts three groups.Said every winding tentaculum comprises a contactor, promptly includes three contactors in the present embodiment altogether, i.e. first contactor 1, second contactor 2 and the 3rd contactor 3, and said three contactors connect through the mode of being connected in parallel.The model of said three contactors is identical, all adopts the A.C. contactor of No. three contact-making switches, and promptly this A.C. contactor has three tunnel ends of incoming cables and three road leading-out terminals respectively, and each contactor has three ends of incoming cables 6 and three leading-out terminals 9 respectively.
Three ends of incoming cables 6 are drawn through three inlet wire copper bars 8 respectively and are formed three input terminals in said each contactor, and said three leading-out terminals 9 are drawn after through outlet copper bar 11 parallel connections and formed a common outlet terminal.
In the present embodiment, the single inlet wire copper bar 8 that is connected with said each end of incoming cables 6 be shaped as strip, said inlet wire copper bar 8 is provided with inlet wire port 7, can be connected with the output of inverter through said inlet wire port 7.Among Fig. 1,2, (in scheming, put in order) from top to bottom successively on the inlet wire copper bar 8 and be provided with cable connection hole, insulated column installing hole, data acquisition hole, to make things convenient for wiring and current/voltage DATA REASONING.
In the present embodiment, said outlet copper bar 11 be shaped as " mountain " font, an end of said " mountain " font outlet copper bar includes three branches, said three branches are connected with three leading-out terminals 9 of single contactor respectively.Like this; Can make three leading-out terminals 9 in the single contactor be connected in parallel together through " mountain " font outlet copper bar; Each " mountain " font outlet copper bar constitutes an outlet terminal of this contactor module, thereby makes three contactors form three outlet terminals.Promptly three of first contactor 1 leading-out terminals use " mountain " font copper bar to be connected to form first outlet terminal of contactor module; Three outlet terminals of second contactor 2 are connected to form second outlet terminal of contactor module with " mountain " font copper bar; Three outlet terminals of the 3rd contactor 3 are connected to form the 3rd outlet terminal of contactor module with " mountain " font copper bars, and these three outlet terminals are connected to the grid after being connected to circuit breaker as the ac output end of this contactor module.Wherein, also be provided with the equal discharge orifice 12 of strip on the outlet copper bar 11, with the flow direction of scattered current.Concrete, the equal discharge orifice 12 on the outlet copper bar 11 is arranged on the middle part and said three positions that branch is corresponding of " mountain " font outlet copper bar, and the length direction of this equal discharge orifice 12 is identical with the orientation of said three branches.
Can know by circuit base knowledge, in circuit under the certain situation of inflow current, when the end of incoming cables of contactor more after a little while, the electric current that is assigned on each branch road can be corresponding bigger, causes occurring between each branch current than big-difference; And the end of incoming cables of parallelly connected contactor is many more, and the electric current that is assigned on each branch road will be corresponding more little, makes that the difference between each branch current is less relatively, so by contrast, the more current-sharing effects for each branch road in the end of incoming cables of contactor are good more.In addition, also have equal discharge orifice 12 on the outlet copper bar 11, therefore, the connected mode of inlet wire copper bar and outlet copper bar in the contactor module in the present embodiment has improved the equal properties of flow of each branch road effectively.And; Under above-mentioned this connected mode; Connection copper bar (comprising inlet wire copper bar and outlet copper bar) in the contactor module is fully exposed, with being connected of other devices in the installation that makes things convenient for the contactor module and contactor module and the photovoltaic network inverter.
Said three contactors are installed on the supporting bracket 4 side by side.Wherein, Said supporting bracket 4 is square; The length of supporting bracket 4 is more than or equal to the overall width of above-mentioned three contactors, and the height of said supporting bracket 4 is more than or equal to the height of single contactor, and said supporting bracket 4 adopts bolt or screw together with the back side of said contactor.Wherein, be to guarantee support strength, supporting bracket 4 adopts to be covered the aluminium zine plate and processes, and the thickness of supporting bracket is more than or equal to 2.5mm.Said supporting bracket 4 is arranged on the fixed head 5.
Under above-mentioned this mounting means; Because the input terminal of contactor module and outlet terminal still is arranged on contactor for single contactor front; Therefore after in the cabinet that said contactor module is installed in photovoltaic network inverter; Input terminal and outlet terminal are fully exposed, thus make things convenient for the contactor module installation and with photovoltaic network inverter in being connected of other devices.
A kind of photovoltaic network inverter that adopts contactor module in the present embodiment comprises cabinet, and said contactor module is installed on the cabinet inwall of photovoltaic network inverter through fixed head 5.The height of said fixed head 5 and length are respectively greater than the height and the length of supporting bracket 4, and supporting bracket 4 links together through bolt or screw with fixed head 5, fixed head 5 through bolt or screw on the cabinet inwall of inverter.Wherein, fixed head 5 adopts and covers the aluminium zine plate and process, and the thickness of said fixed head 5 is more than or equal to 2.5mm.Under this mounting means, supporting bracket 4 can increase inlet wire copper bar and the electric clearance (being safe distance) between outlet copper bar and the fixed head 5 on the contactor module, improves the fail safe of contactor module.
If the output current of single contactor is I
Single, then in the present embodiment, the output current I of contactor module
Group=3*I
Single, the corresponding overcurrent ability to bear of contactor module also is 3 times of single contactor.
Embodiment 2:
As shown in Figure 2, in the present embodiment, contactor still adopts three groups; The difference of present embodiment and embodiment 1 is: first; Every winding tentaculum comprises two A.C. contactors, and promptly the contactor module comprises six contactors altogether in the present embodiment, and said six contactors are installed on the supporting bracket 4 side by side; The second, the rake type that is shaped as of outlet copper bar 11 in every winding tentaculum.
One end of this rake type outlet copper bar includes six branches, and each leading-out terminal in two contactors in said six branches and the every winding tentaculum is connected respectively.Six leading-out terminals described in every winding tentaculum in adjacent two contactors are connected in parallel together through said rake type outlet copper bar (can be regarded as the connection of a plurality of " mountain " font copper bar).
Therefore, 18 ends of incoming cables 6 in this contactor module connect through 18 bar shaped copper bars respectively draws 18 input terminals of formation, and formed input terminal is connected with the output of inverter; Six leading-out terminals 9 in this contactor module in every winding tentaculum adopt the parallel connection of rake type outlet copper bars to form three outlet terminals, and these three outlet terminals are connected to the grid after being connected to circuit breaker as the ac output end of contactor module.
In the present embodiment, inlet wire copper bar and outlet copper bar in the contactor module adopt above-mentioned connected mode, make the equal properties of flow of each branch road be superior to the equal properties of flow of each branch road among the embodiment 1.
If it is single that the output current of single contactor is I, then in the present embodiment, the output current I of contactor module
Group=6*I
Single, the corresponding overcurrent ability to bear of contactor module also is 6 times of single contactor.
The supporting bracket 4 that is used to support said contactor module in the present embodiment is fitted with the size of said contactor module with the fixed head that is used for fixing said contactor module 5 mutually, but the size relationship of the contactor module among supporting bracket 4 and fixed head 5 and the embodiment 1 is provided with among its concrete size analogy embodiment 1; Other structures of contactor module and use all identically with embodiment 1 in the present embodiment repeat no more here.
Here it should be understood that; The number of contactor is not limited to six among among the embodiment 1 three or the embodiment 2 in the said contactor module; In practical application, can require according to the overcurrent of inverter ac output end in the cost of single contactor and capacity and the photovoltaic network inverter to design; When the contactor number in the contactor module is three N (N is a natural number) times, branch into 3*N in the rake type outlet copper bar.
It is understandable that above execution mode only is the illustrative embodiments that adopts for the principle that the utility model is described, yet the utility model is not limited thereto.For the one of ordinary skilled in the art, under the situation of spirit that does not break away from the utility model and essence, can make various modification and improvement, these modification and improvement also are regarded as the protection range of the utility model.
Claims (10)
1. a contactor module comprises fixed head and is located at the contactor on the said fixed head, it is characterized in that; Said contactor adopts many groups; And the group number of contactor is three integral multiple, and said many windings tentaculum is installed on the fixed head side by side, in every winding tentaculum; The formation input terminal is drawn through the inlet wire copper bar in the end of incoming cables of said single contactor, and its leading-out terminal is drawn the formation outlet terminal through the outlet copper bar.
2. contactor module according to claim 1 is characterized in that, in every winding tentaculum, includes a plurality of ends of incoming cables and a plurality of leading-out terminal in the single contactor, and said a plurality of ends of incoming cables are respectively drawn through an inlet wire copper bar and formed a plurality of input terminals; Said a plurality of leading-out terminal is drawn through the parallel connection of an outlet copper bar and is formed a common outlet terminal.
3. contactor module according to claim 2; It is characterized in that include a contactor in said every winding tentaculum, this contactor comprises three ends of incoming cables and three leading-out terminals; The inlet wire copper bar that is connected with said each end of incoming cables be shaped as strip; Said outlet copper bar be shaped as " mountain " font, an end of said " mountain " font outlet copper bar includes three branches, said three branches are connected with three leading-out terminals of contactor respectively; Perhaps; Include two or more contactors in said every winding tentaculum; Wherein each contactor comprises three ends of incoming cables and three leading-out terminals, the inlet wire copper bar that is connected with said each end of incoming cables be shaped as strip, the rake type that is shaped as of said outlet copper bar; One end of this rake type outlet copper bar includes a plurality of branches, and each leading-out terminal in the two or more contactors in said a plurality of branches and the every winding tentaculum is connected respectively.
4. contactor module according to claim 3; It is characterized in that; Said outlet copper bar is provided with equal discharge orifice; Equal discharge orifice on the said outlet copper bar is arranged on the position corresponding with said branch, middle part of " mountain " font or rake type outlet copper bar, and it is shaped as strip, and its length direction is identical with the orientation of branch.
5. contactor module according to claim 1 is characterized in that, also includes supporting bracket in this contactor module, and said each contactor is fixed on the said supporting bracket, and said supporting bracket is arranged on the said fixed head.
6. contactor module according to claim 5 is characterized in that, said supporting bracket is square, and the length of supporting bracket is more than or equal to the overall width of a plurality of contactors, and said a plurality of contactors pass through bolt or screw respectively on supporting bracket.
7. contactor module according to claim 6 is characterized in that, said supporting bracket adopts to be covered the aluminium zine plate and process, and the thickness of said supporting bracket is more than or equal to 2.5mm.
8. according to the described contactor module of one of claim 1-7, it is characterized in that said fixed head adopts and covers the aluminium zine plate and process, the thickness of said fixed head is more than or equal to 2.5mm.
9. a photovoltaic network inverter comprises the contactor module, it is characterized in that, said contactor module adopts one of claim 1-8 described contactor module.
10. photovoltaic network inverter according to claim 9 is characterized in that said device also includes cabinet, and said contactor module is installed on the inwall of said cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201035517U CN202550291U (en) | 2012-03-19 | 2012-03-19 | Contactor module and photovoltaic grid connection inversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201035517U CN202550291U (en) | 2012-03-19 | 2012-03-19 | Contactor module and photovoltaic grid connection inversion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202550291U true CN202550291U (en) | 2012-11-21 |
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ID=47170861
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201035517U Expired - Fee Related CN202550291U (en) | 2012-03-19 | 2012-03-19 | Contactor module and photovoltaic grid connection inversion device |
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| Country | Link |
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| CN (1) | CN202550291U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319209A (en) * | 2014-10-27 | 2015-01-28 | 江苏省电力公司洪泽县供电公司 | High-safety single column fully insulated line connector |
| CN108574418A (en) * | 2018-04-26 | 2018-09-25 | 中车青岛四方车辆研究所有限公司 | Draw inverter |
| US11456688B2 (en) | 2020-11-30 | 2022-09-27 | General Electric Renovables Espana, S.L. | Systems and methods for operating a power generating asset |
-
2012
- 2012-03-19 CN CN2012201035517U patent/CN202550291U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319209A (en) * | 2014-10-27 | 2015-01-28 | 江苏省电力公司洪泽县供电公司 | High-safety single column fully insulated line connector |
| CN108574418A (en) * | 2018-04-26 | 2018-09-25 | 中车青岛四方车辆研究所有限公司 | Draw inverter |
| US11456688B2 (en) | 2020-11-30 | 2022-09-27 | General Electric Renovables Espana, S.L. | Systems and methods for operating a power generating asset |
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