CN104753017A - Electric power transmission equipment for wind tower - Google Patents
Electric power transmission equipment for wind tower Download PDFInfo
- Publication number
- CN104753017A CN104753017A CN201410700206.5A CN201410700206A CN104753017A CN 104753017 A CN104753017 A CN 104753017A CN 201410700206 A CN201410700206 A CN 201410700206A CN 104753017 A CN104753017 A CN 104753017A
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- Prior art keywords
- bus
- tube type
- aluminium alloy
- electric power
- type bus
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/20—Spatial arrangements or dispositions of lines or cables on poles, posts or towers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
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- Wind Motors (AREA)
Abstract
The invention relates to the technical field of wind power generation and discloses electric power transmission equipment for a power generation wind tower. The electric power transmission equipment for the wind tower comprises an initial end box, an electric power transmission device and a terminal box, wherein the electric power transmission device further comprises a plurality of aluminum alloy tubular buses, an anti-falling device and a mounting bracket. The electric power transmission equipment for the wind tower has advantages of large carrying capacity, strong cooling performance, high mechanical intensity, good flexibility, convenience in mounting, free maintenance and the like, and the electric power transmission equipment for the wind tower is economical, beautiful, safe and reliable.
Description
Technical field
The present invention relates to technical field of wind power generation, especially for the electric power conveying equipment of power generating wind tower.
Background technology
Since many centuries, wind-driven generator is the same with hydraulic machinery, substitutes manpower, animal power as power source, plays an important role the development of productivity.Wind-driven generator is mainly made up of blade, generator, mechanical part, electric component, overall in tower windmill.Wherein, generator is positioned at tower head position, needs, by transmission of electricity bus, the electric power of generation is transported to ground.And wind-driven generator is when operating, whole wind tower can issue raw multi-directionly well-regulatedly to rock all around in wind-force effect.Transmission of electricity bus is connected with tower head due to head, afterbody is connected with ground, rock in process at Feng Ta bus of transmitting electricity and significantly well-regulated rocking also can occur, thus generation fatigue rupture, add the factor impacts such as linear expansion coefficient, the problem faults such as transmission of electricity bus easily ruptures, comes off, skewness, and then affect the normal operation of whole wind turbine generator.
And, in the use procedure of conventional transmission lines Lu Feng tower, easily cause the increase of supplementary load loss, skin effect coefficient, cause the decline of current capacity, especially the outlet of big current, not only there are electric power problem, the heating problem of circuit itself, also have the heating problem that the reinforcing bar near bus bar column insulator, Steel Structure and bus in concrete column, basis causes in elect magnetic field inductive loop.Therefore, design, life
produce novelwind tower power transmission device very necessary.
Summary of the invention
Goal of the invention
The present invention be directed to the problem existing for above-mentioned prior art, propose a kind of brand-new wind tower electric power conveying equipment.By the application of present device, perfect can solve rupture of line that in wind power generation process, transmission line brings because of factors such as wind tower rock, come off, the series of problems such as skewness.
Summary of the invention
Concrete technical scheme is as follows:
a kind of wind tower electric power conveying equipment, comprise top case, power transmitting device, termination rack, power transmitting device input is communicated with top case, and power transmitting device output is communicated with termination rack, it is characterized in that described power transmitting device comprises: some aluminium alloy tube type bus, anti-drop device and mounting bracket.
Described aluminium alloy tube type bus comprises multistage tube type bus main body and jockey, wherein, quantity=tube type bus main body the quantity-1 of described jockey, described jockey comprises the connector shell of two right prism structures, described connector shell cross sectional shape is isosceles triangle, it is semicircular clamping groove that connector shell is longitudinally provided with cross sectional shape, described connector shell is longitudinally evenly provided with many group bolt channels groups, often organize bolt channels group to be made up of the clamping groove both sides that are distributed in of two bolt channels symmetries, described two connector shells are fitted relatively, be bolted integral, described bolt is positioned at bolt channels mutually corresponding on two connector shells, the bus shackle passageway that the formation one that described two clamping grooves are relative is circular, described two sections of tube type bus main bodys are fixed in the bus shackle passageway of jockey, and be fixed by slip-off preventing pin, described bus shackle passageway and tube type bus main body interference fit.
Described anti-drop device comprises steelframe, supporting case, reinforcement assembly and silica gel plate; Wherein, supporting case comprises base and cover plate, and base is the hollow cubic body structure of upper opening, and cover plate is covered by screw and is fixed on above base; Described supporting case top and bottom are provided with two bus installing holes; Described reinforcement assembly is made up of supporting seat, support bar, pin, and described supporting seat is the hollow cubic body structure of upper opening, and size and supporting case interior space dimension are coincide; Described supporting seat left and right inwall is provided with two support bars in opposite directions in the same horizontal line, and between support bar, spacing is identical with bus installing hole diameter; Position corresponding with bus installing hole bottom described supporting seat is provided with through hole, and shape of through holes, size are identical with bus installing hole; Described aluminium alloy tube type bus is through the bus installing hole of anti-drop device, pin runs through aluminium alloy tube type bus and supporting seat simultaneously, two ends are individually fixed in the left and right wall centre position of supporting seat, support bar in reinforcement assembly and supporting seat and aluminium alloy tube type bus are connected and fixed by welding manner by described anti-drop device, make anti-drop device be positioned at aluminium alloy tube type bus point midway; Described silica gel plate is provided with shape, perforation that size is identical with bus installing hole, and the perforation center of circle is corresponding with bus installing hole, and silica gel plate passes aluminium bar bus and is positioned over above support bar.
Described mounting bracket comprises mount pad, 2 supports and 2 bus clips; Wherein, mount pad comprises 4 steel mounting blocks, and be arcuate structure bottom mounting blocks, top is provided with screw; Described support is " several " character form structure, is connected between 2 supports by channel-section steel, makes the side of mounting bracket in " work " character form structure; Described bus clip comprises two rectangle fixture blocks, and fixture block is provided with some semicircle bus draw-in grooves; After described two fixture blocks are relatively fixing by nut, relative two semicircle bus draw-in grooves, form circular busbar hole clipping; Described bus clip by nut connect fastening with support above; Described mounting blocks connects 4 legs being anchored on 2 supports respectively by nut.
Described mounting bracket is sleeved on aluminium alloy cast end of bus bars, makes aluminium alloy tube type bus through the bus hole clipping of mounting bracket.
Power transmitting device as described in technical scheme, wherein said some aluminium alloy tube type bus can install distribution by straight line, triangle or quadrangle.
Transmission facility as described in technical scheme, wherein said mounting bracket is two, respectively fit and aluminium alloy tube type bus two ends.
Transmission facility as described in technical scheme, steelframe described in its anti-drop device comprised comprises 4 in the angle wrapping structure of 90 °, is fixed on supporting case four corner angle limits respectively by welding manner.
Transmission facility as described in technical scheme, is set with insulating case on bottom the support bar of reinforcement assembly described in its anti-drop device comprised and supporting seat.
Transmission facility as described in technical scheme, the quantity of the described bolt channels group of the aluminium alloy tube type bus that it comprises is 4 groups, and the quantity of described bolt is 8.
Beneficial effect
1. the wind tower electric power conveying equipment that the present invention proposes adopts tube type bus to be power transmission conductor, and because bus is arranged in tower cylinder, have ampacity large, its insulating barrier only 0.3mm is thick, and cable is thick in more than 2mm, so possess the feature of perfect heat-dissipating.In addition, because conductor is hollow tube, can be discharged smoothly by the heat produced that be in operation fast, therefore homogeneous current distribution, overcomes the harmful effect that kelvin effect is brought, without condensation.And between adjacent two sections of tube type bus main bodys, be provided with jockey and anti-drop device is set in bus middle part, make it to form entirety and be fixed on wind inner wall of tower, guarantee that equipment does not rupture in Long-Time Service not come off, flexible, mechanical, physical strength is high, good to the swing adaptability of wind tower, not creating antagonism property, solve the impact that swing that traditional transmission facility formed the effect of tower cylinder due to wind in wind tower brings, reliability is high.
2. the aluminium alloy cast busbar body in the present invention is fixed in jockey by interference fit, then carries out secondary by pin and fix, and connects firm stable more.And at bus point midway, present device is provided with anti-drop device, reinforced by welding and bayonet fittings, can guarantee that bus is fitted in Long-Time Service further and be fixed on wind tower inside, do not rupture and do not come off, the persistent ailment of solve the long-term indeterminable arcing of traditional transmission facility, burning, more safe and reliable.
Adopt reinforcement assembly to adopt the parts such as insulating case, silicane rubber plate to possess insulation, heatproof, fire-retardant advantage in 3 present devices, solve the problem that the factor such as part friction, insulating barrier damage is brought, security performance and durability high.
4. present device overall structure is simply novel, safe and reliable, and operation simple installation is very beneficial to operation.And materials are simple, and cheap for manufacturing cost, cost performance is high.
Accompanying drawing explanation
figure1 is the front cross-sectional of present device
figure.
figure2 is side profile when present device is installed and used
figure.
figure3 are
figurea point structure for amplifying signal in 1
figure.
figure4 are
figurein 1, A point position overlooks
figure.
figure5 is parts anti-drop device of the present invention, and side profile is illustrated
figure.
figure6 are
figurethe structure for amplifying signal of B point position in 1
figure.
figure7 is overlooking/looking up of part mounting rack of the present invention
figure.
figure8 is aluminium alloy cast bus mounting structure signal of the present invention
figureone.
figure9 is aluminium alloy cast bus mounting structure signal of the present invention
figuretwo.
Embodiment
For making this
inventiontechnical scheme clear and definite more, below in conjunction with attached
figuredescribe execution mode and the effect of the technical program in detail:
As
figure1 or
figurewind tower electric power conveying equipment shown in 2, comprise top case 10, power transmitting device 20, termination rack 30, power transmitting device 30 input is communicated with top case 10, power transmitting device 20 output is communicated with termination rack 30, it is characterized in that described power transmitting device comprises: aluminium alloy tube type bus 210, anti-drop device 220 and mounting bracket 230.
As
figure3,
figurealuminium alloy tube type bus 210 shown in 4, comprise multistage tube type bus main body A 1 and jockey A2, quantity=tube type bus main body A 1 quantity-1 of described jockey A2, described jockey A2 comprises the connector shell A3 of two right prism structures, described connector shell A3 cross sectional shape is isosceles triangle, it is semicircular clamping groove A4 that connector shell A3 is longitudinally provided with cross sectional shape, described connector shell A3 is longitudinally evenly provided with 4 groups of bolt channels group A5, often organize bolt channels group A5 to be made up of the clamping groove A4 both sides that are distributed in of two bolt channels A6 symmetries, described two connector shell A3 fit relatively, be integrally fixed by bolt A7, described bolt A7 is positioned at bolt channels 6 mutually corresponding on two connector shell A3, the bus shackle passageway A8 that the formation one that described two clamping groove A4 are relative is circular, described two sections of tube type bus main body A 1 are fixed in the bus shackle passageway A8 of jockey, and be fixed by slip-off preventing pin A9, described bus shackle passageway A8 and tube type bus main body A 1 interference fit.
As
figure5, shown anti-drop device 220, comprises supporting case 2210, reinforcement assembly 2220, steelframe 2230 and silica gel plate 2240;
Described supporting case 2210 comprises base 2212 and cover plate 2211, and base 2212 is the hollow cubic body structure of upper opening, and cover plate 2211 is covered by screw and is fixed on above base 2212; Described supporting case 2210 top and bottom are respectively equipped with measure-alike, that axle center is symmetrical bus installing hole 2213;
Described reinforcement assembly 2220 is made up of supporting seat 2221, pin 2222, support bar 2223, and described supporting seat 2221 is the hollow cubic body structure of upper opening, and size and supporting case 2210 interior space dimension are coincide; Described supporting seat about 2221 inwall is provided with two support bars 2223 in opposite directions, and between support bar 2223, interval S is identical with bus installing hole 2213 diameter; Bottom described supporting seat 2221, the position corresponding with bus installing hole 2213 is provided with through hole 2224, and through hole 2224 shape, size are identical with bus installing hole 2213;
In conjunction with
figure1,
figure5 and as
figureshown in 6, described aluminium alloy tube type bus 210 is through the bus installing hole of anti-drop device 220, pin 2222 runs through aluminium alloy tube type bus A1 and supporting seat 2221 simultaneously, two ends are individually fixed in the left and right wall centre position of supporting seat 2221, support bar 2223 in reinforcement assembly 2220 and supporting seat 2221 are connected and fixed with aluminium alloy tube type bus A1 by welding manner by described anti-drop device 220, make anti-drop device 2220 be positioned at aluminium alloy tube type bus 210 point midway; Described silica gel plate 2240 is provided with shape, perforation 2241 that size is identical with bus installing hole, and 2241 centers of circle of boring a hole are corresponding with bus installing hole 2213, and silica gel plate 2240 is positioned over above support bar 2223 through aluminium bar bus A1.
As
figureshown in 5, described steelframe 2230 comprises the angle wrapping structure that 4 angle angle a are 90 °, is fixed on supporting case 2,210 four corner angle limits respectively by welding manner.
In order to preventing short circuit fault, can bottom the support bar 2223 of reinforcement assembly 2220 and supporting seat 2221 on be set with insulating case.
In conjunction with
figure5 Hes
figureshown in 6, aluminium alloy tube type bus A1 with support bar 2223, supporting seat 2221 bottom connecting place, namely 221 and 222 places, fixing by being welded to connect, thus be fixed on anti-drop device 220 by aluminium alloy tube type bus A1.
As
figure1 He
figureshown in 7, described mounting bracket comprises mount pad 231,2 supports 232 and 2 bus clips 233; Wherein, mount pad 231 comprises 4 steel mounting blocks, and be arcuate structure bottom mounting blocks, top is provided with screw; Described support 232 is " several " character form structure.As
figureshown in 1, connected by channel-section steel between 2 supports, make the side of mounting bracket in " work " character form structure; Described bus clip 233 comprises two rectangle fixture blocks, and fixture block is provided with some semicircle bus draw-in grooves; After described two fixture blocks are relatively fixing by nut, relative two semicircle bus draw-in grooves, form circular busbar hole clipping 2331; Described bus clip 233 by nut connect fastening with support 232 above; Described 4 mounting blocks connect 4 legs being anchored on 2 supports respectively by nut.During assembling, 2 mounting brackets 230 are set in aluminium alloy tube type bus 210 two ends, make aluminium alloy tube type bus 210 through the bus hole clipping 2331 of mounting bracket.
As
figureshown in 7 ~ 9, in described wind tower electric power conveying equipment some aluminium alloy tube type bus can by the distribution of the structure installment such as straight line, triangle or quadrangle.
As
figureshown in 5, steelframe 2230 described in anti-drop device 220 comprises the angle wrapping structure of 4 angle a=90 °, is fixed on four corner angle limits of supporting case 2210 respectively by welding manner.Further, in order to improve the insulating properties of device, on bottom the support bar 2223 and supporting seat 2221 of reinforcement assembly 2220 described in anti-drop device 220, insulating case is set with.
As
figureshown in 3, the quantity of the described bolt channels group A5 of its aluminium alloy tube type bus 210 comprised of described power transmitting device is 4 groups, and the quantity of described bolt is 8.
By test of many times and standard formulation, the electric property of the aluminium alloy tube type bus of above-mentioned wind tower electric power conveying equipment reaches following level:
Rated voltage: 0.4-0.6-1.0-1000Kv
Rated current: 400-1000-12000A
Rated frequency: 50Hz
Nominal insulation voltage: V(AC): 1000
Line system: phase three-wire three or three-phase and four-line
Specified short time withstand current KA:65KA
Rated peak withstand current (ls): 145KA
The mechanical performance of aluminium alloy tube type bus:
Degree of protection: equivalent cable
Mechanical strength is high, lightweight, Heat stability is good, ampacity large, perfect heat-dissipating, overload capacity are strong.
Temperature rise limits: temperature rise is less than 40K temperature rise and limits 120 DEG C
Tensile strength: >=205Mpa
Yield strength: >=175Mpa
Relative electric conductivity IACS ﹪ >=51
The coefficient of expansion 1 ﹪ (near 100 DEG C) 23.4 × 10-6
Line expansion set occurrence=coefficient of linear expansion × length × temperature change value
Coefficient of linear expansion is according to GB/T5585.2-2005
Standard provides: 0.000023. DEG C-1
Elastic modulus E mpa 72000
20 DEG C of electricalresistivityρs. Ω ㎜ 2/m 0.034
Resistance value: R20=ρ 20L/A
Conductive coefficient (card/DEG C × ㎝ × S) 0.5
Other performance of aluminium alloy tube type bus
Ambient temperature :-40 ~+50 DEG C
Relative humidity≤95%
Height above sea level≤2000m
Maximal humidity≤95%
Earthquake intensity: VIII
Horizontal acceleration: 0.25g
Normal acceleration: 0.125g
Gradation for surface pollution: IV (calculating by ceiling voltage)
Retting-flax wastewater: 3.5/ ㎝/Kv
Simultaneously the present invention has also done great many of experiments to the specification of equipment and intensification relation, obtains
as table 1shown experimental data:
table 1: wind tower electric power conveying equipment specification table and the experiment table that heats up
Remarks: bus length is 6 meters, experimental situation is in closed chamber, does not have air circulation, ambient temperature 31 DEG C, relative humidity 60 ﹪.
By above experimental data and result display, the wind tower electric power transportation means that the wind tower electric power conveying equipment of the present invention's proposition is normal with tradition is compared with equipment, take into account the advantages such as ampacity is large, heat dispersion is strong, mechanical strength is high, flexible, easy for installation, economic, attractive in appearance, nothing is safeguarded, safe and reliable, possess outstanding substantive distinguishing features and progress significantly.
Claims (10)
1.
a kind of wind tower electric power conveying equipment, comprise top case, power transmitting device, termination rack, power transmitting device input is communicated with top case, and power transmitting device output is communicated with termination rack, it is characterized in that described power transmitting device comprises: some aluminium alloy tube type bus, anti-drop device and mounting bracket.
2. described in, aluminium alloy tube type bus comprises multistage tube type bus main body and jockey, wherein, quantity=tube type bus main body the quantity-1 of described jockey, described jockey comprises the connector shell of two right prism structures, described connector shell cross sectional shape is isosceles triangle, it is semicircular clamping groove that connector shell is longitudinally provided with cross sectional shape, described connector shell is longitudinally evenly provided with many group bolt channels groups, often organize bolt channels group to be made up of the clamping groove both sides that are distributed in of two bolt channels symmetries, described two connector shells are fitted relatively, be bolted integral, described bolt is positioned at bolt channels mutually corresponding on two connector shells, the bus shackle passageway that the formation one that described two clamping grooves are relative is circular, described two sections of tube type bus main bodys are fixed in the bus shackle passageway of jockey, and be fixed by slip-off preventing pin, described bus shackle passageway and tube type bus main body interference fit.
3. anti-drop device described in comprises steelframe, supporting case, reinforcement assembly and silica gel plate; Wherein, supporting case comprises base and cover plate, and base is the hollow cubic body structure of upper opening, and cover plate is covered by screw and is fixed on above base; Described supporting case top and bottom are provided with two bus installing holes; Described reinforcement assembly is made up of supporting seat, support bar, pin, and described supporting seat is the hollow cubic body structure of upper opening, and size and supporting case interior space dimension are coincide; Described supporting seat left and right inwall is provided with two support bars in opposite directions in the same horizontal line, and between support bar, spacing is identical with bus installing hole diameter; Position corresponding with bus installing hole bottom described supporting seat is provided with through hole, and shape of through holes, size are identical with bus installing hole; Described aluminium alloy tube type bus is through the bus installing hole of anti-drop device, pin runs through aluminium alloy tube type bus and supporting seat simultaneously, two ends are individually fixed in the left and right wall centre position of supporting seat, support bar in reinforcement assembly and supporting seat and aluminium alloy tube type bus are connected and fixed by welding manner by described anti-drop device, make anti-drop device be positioned at aluminium alloy tube type bus point midway; Described silica gel plate is provided with shape, perforation that size is identical with bus installing hole, and the perforation center of circle is corresponding with bus installing hole, and silica gel plate passes aluminium bar bus and is positioned over above support bar.
4. mounting bracket described in comprises mount pad, 2 supports and 2 bus clips; Wherein, mount pad comprises 4 steel mounting blocks, and be arcuate structure bottom mounting blocks, top is provided with screw; Described support is " several " character form structure, is connected between 2 supports by channel-section steel, makes the side of mounting bracket in " work " character form structure; Described bus clip comprises two rectangle fixture blocks, and fixture block is provided with some semicircle bus draw-in grooves; After described two fixture blocks are relatively fixing by nut, relative two semicircle bus draw-in grooves, form circular busbar hole clipping; Described bus clip by nut connect fastening with support above; Described mounting blocks connects 4 legs being anchored on 2 supports respectively by nut.
5. mounting bracket described in is sleeved on aluminium alloy cast end of bus bars, makes aluminium alloy tube type bus through the bus hole clipping of mounting bracket.
6. wind tower electric power conveying equipment as claimed in claim 1, is characterized in that described some aluminium alloy tube type bus can install distribution by straight line, triangle or quadrangle.
7. wind tower electric power conveying equipment as claimed in claim 1, is characterized in that described mounting bracket is two, respectively fit and aluminium alloy tube type bus two ends.
8. wind tower electric power conveying equipment as claimed in claim 1, is characterized in that steelframe described in described anti-drop device comprises 4 in the angle wrapping structure of 90 °, is fixed on supporting case four corner angle limits respectively by welding manner.
9. wind tower electric power conveying equipment as claimed in claim 1, is characterized in that being set with insulating case on bottom the support bar of reinforcement assembly described in described anti-drop device and supporting seat.
10. wind tower electric power conveying equipment as claimed in claim 1, it is characterized in that the quantity of the described bolt channels group of described aluminium alloy tube type bus is 4 groups, the quantity of described bolt is 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410700206.5A CN104753017A (en) | 2014-11-28 | 2014-11-28 | Electric power transmission equipment for wind tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410700206.5A CN104753017A (en) | 2014-11-28 | 2014-11-28 | Electric power transmission equipment for wind tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104753017A true CN104753017A (en) | 2015-07-01 |
Family
ID=53592299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410700206.5A Pending CN104753017A (en) | 2014-11-28 | 2014-11-28 | Electric power transmission equipment for wind tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104753017A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958405A (en) * | 2016-05-25 | 2016-09-21 | 正泰电气股份有限公司 | Wind power generation conductor rail with semicircular pipes |
| CN112600330A (en) * | 2019-10-02 | 2021-04-02 | 西门子歌美飒可再生能源公司 | Bus bar device for wind turbine generator |
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| CN103474928A (en) * | 2013-09-11 | 2013-12-25 | 黄吉祥 | Novel wind generating set bus duct |
| CN204481446U (en) * | 2014-11-28 | 2015-07-15 | 樊纪保 | A kind of wind tower electric power conveying equipment |
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Patent Citations (7)
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| CN101005201A (en) * | 2005-11-10 | 2007-07-25 | 通用电器（加拿大）公司 | Bus bar mounting arrangement |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958405A (en) * | 2016-05-25 | 2016-09-21 | 正泰电气股份有限公司 | Wind power generation conductor rail with semicircular pipes |
| CN112600330A (en) * | 2019-10-02 | 2021-04-02 | 西门子歌美飒可再生能源公司 | Bus bar device for wind turbine generator |
| CN112600330B (en) * | 2019-10-02 | 2024-10-11 | 西门子歌美飒可再生能源公司 | Bus bar arrangement for a wind turbine generator |
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Application publication date: 20150701 |