CN203645559U - Flexible dc power-transmission converter valve tower based on voltage-source current transformers - Google Patents
Flexible dc power-transmission converter valve tower based on voltage-source current transformers Download PDFInfo
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- CN203645559U CN203645559U CN201420000785.8U CN201420000785U CN203645559U CN 203645559 U CN203645559 U CN 203645559U CN 201420000785 U CN201420000785 U CN 201420000785U CN 203645559 U CN203645559 U CN 203645559U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 45
- 230000008054 signal transmission Effects 0.000 claims description 31
- 239000012212 insulator Substances 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 25
- 239000004020 conductor Substances 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 9
- 239000011229 interlayer Substances 0.000 claims description 8
- 229920006351 engineering plastic Polymers 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000000725 suspension Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The utility model discloses a flexible dc power-transmission converter valve tower based on voltage-source current transformers. The whole valve tower of a vertical structure is supported on the ground. The valve tower comprises at least one valve layer, the valve layers are arranged up and down and respectively provided with independent water distribution pipelines; and each valve layer comprises at least one valve segment, the valve segments in each valve layer are arranged in a straight line, each valve segment comprises multiple flexible dc power-transmission current transformers to complete voltage conversion, and all the current transformers in the valve tower are connected in series. The converter valve tower is compact in structure, strong in electrical and mechanical performance and high in operational stability.
Description
Technical field
The present invention relates to electric and electronic technical field, particularly relate to a kind of flexible DC power transmission converter valve tower based on voltage source converter.
Background technology
Along with improving constantly of economic growth and living standards of the people, China is more and more higher to the demand of electric energy, and China's energy and electric power deposit skewness, therefore how efficiently solving electric power resource transportation problem is large focus and a difficult point of current electric and electronic technical field.At present the most frequently used is UHV AC transmission technique, but owing to having the resistance loss of wire and the loss of interchange induction reactance, in the time that circuit is long, the electric energy of carrying will all consume on transmission line, therefore ac transmission can not be done too long distance power transmission, and studying energetically, develop HVDC Transmission Technology has become necessary.
What HVDC Transmission Technology was conventional is thyristor valves, and valve tower is conventional suspension type or vertical structure generally.Suspension type valve tower entirety has adopted flexible connection mode, be mainly suspension insulator and rotation is articulated and connected, between valve layer, there is relative shaking phenomenon, and because suspension insulator can only bear longitudinal pulling force, cannot bear shearing force, therefore have the degree of freedom of horizontal direction, therefore valve tower overall operation stability and shock resistance decline.When vertical structure converter valve tower is applied in high-power high voltage direct current transportation, valve tower black box need increase greatly, but structure limits to some extent, has many difficult design, converter valve Room structural requirement is improved greatly simultaneously, and on-the-spot installation implemented also comparatively inconvenience.Meanwhile, the valve tower of the type, need take bulk shielding measure to different valve layers, to affect the radiating effect of valve tower to a certain extent, in design, electric property, mechanical performance etc. are difficult to meet simultaneously, and structure is too compact, has brought inconvenience to installation and maintenance work.
Summary of the invention
In order to overcome the weak point of above-mentioned conventional thyristor valves, the invention provides a kind of flexible DC power transmission converter valve tower of voltage source converter.
The technical solution adopted in the present invention is:
A flexible DC power transmission converter valve tower based on voltage source converter, this valve tower adopts vertical structure, and integrated support is in ground; Valve tower comprises at least one valve layer, and each described valve layer is arranged above and below, and configures independently water distribution pipeline; Each described valve layer comprises at least one valve section, the described valve section word order in described each valve layer, and described each valve section comprises that several flexible DC power transmission current transformers have been used for voltage transitions, all described current transformer series connection in described valve tower.
Further, this valve tower also comprises electric energy transmission system, for alternating current being sent into the each described converter of described valve tower, and the direct current after described each current transformer conversion is sent to described valve tower.
Further, electric energy transmission system comprises: interchange end of incoming cables, direct current leading-out terminal on pipe bus or flexible conductor, described pipe bus or flexible conductor; Described pipe bus or flexible conductor are positioned on the framework of described valve section, successively install according to described valve layer; Alternating current is inputted by described interchange end of incoming cables, from bottom to top, connects one by one and after current transformer, is exported by described direct current leading-out terminal described in each, maybe by this interchange end of incoming cables and this direct current leading-out terminal location swap, adopts arrangement from top to bottom.
Further, this valve tower also comprises water distribution pipeline, for heat radiation, comprises valve section water pipe, branch road water pipe, water main; On described valve section water pipe, offer water outlet branch road, be connected to the heat dissipation element of described current transformer by described branch road water pipe; When water distribution, from bottom to top, in described water main is dispensed to the described valve section water pipe of described each valve layer, form circulation; Described water main adopts S shape or in-line structure according to design voltage grade, adopts flange to be connected, end face seal with described valve section water pipe; Between the water pipe with the different valve section of valve layer, adopt flange or connected by a joint, end face seal or the sealing of " O " shape sealing ring.
Further, this valve tower also comprises signal transmission system, for transmission of control signals, comprises signal transmission slot and signal transmssion line; Described signal transmission slot is arranged in described valve tower both sides; The signal transmssion line groove of described valve interlayer is arranged on insulating support; Described signal transmssion line from bottom to top lays, in described signal transmission slot is dispensed to each described valve layer valve section.
Further, described water distribution pipeline and/or described signal transmission slot, adopt engineering plastics; Water distribution main line and/or described signal transmission slot adopt S shape or yi word pattern structure.
Further, this valve tower also comprises radome, by mounting bracket and be bolted between different described valve section two ends and/or described valve section.
Further, described current transformer is the voltage-source type current transformers such as many level current transformers, mixed multi-level current transformer, or two level cascade converters.
Further, valve tower entirety is supported in ground by supporting insulator; Between adjacent described valve layer, supporting insulator is connected, outside connected by oblique pull insulator; Between described valve section, use oblique pull insulator to be connected.
Further, this valve section bottom also comprises and insulation crossbeam is connected with valve segment frames, described current transformer by guide rails assembling on described insulation crossbeam.
Valve tower provided by the present invention, structure is more flexible, and convenient transport and engineering site assembling facilitate the enforcement of different capabilities simultaneously; Electric property is comparatively stable; Effectively improve the electric and mechanical performance of converter valve.
Brief description of the drawings
Fig. 1 is the front-view schematic diagram of valve tower of the present invention.
Fig. 2 is the right view of valve tower of the present invention.
Fig. 3 is the backsight rough schematic view of valve tower of the present invention.
Embodiment
Valve tower provided by the present invention adopts vertical structure, integrated support is in ground, comprise at least one valve layer, each described valve layer is arranged above and below, configure independently water distribution pipeline, each described valve layer comprises at least one valve section, the described valve section word order in described each valve layer, each valve section in described valve tower comprises that several flexible DC power transmission current transformers have been used for voltage transitions, all described current transformer series connection in described valve tower.Valve layer, valve section and current transformer number in valve tower can be determined according to different design capacities.
This valve tower also comprises electrical transmission system, for alternating current being sent into the each described current transformer of described valve tower, and the direct current after described each current transformer conversion is sent to this valve tower.Mainly comprise interchange end of incoming cables, direct current leading-out terminal on pipe bus or flexible conductor, described pipe bus or flexible conductor.Pipe bus or flexible conductor are positioned on the framework of described valve section, successively install according to the quantity of described valve layer; Alternating current is inputted by described interchange end of incoming cables, from bottom to top, connects one by one and after current transformer, is exported by described direct current leading-out terminal described in each.
Valve section bottom can also comprise insulation crossbeam, be connected with valve segment frames, described current transformer by guide rails assembling on described insulation crossbeam.
This valve tower also comprises water distribution pipeline, for heat radiation.Mainly comprise valve section water pipe, branch road water pipe, water main; On described valve section water pipe, offer water outlet branch road, be connected to the heat dissipation element of described current transformer by described branch road water pipe; When water distribution, from bottom to top, in described water main is dispensed to the described valve section water pipe of described each valve layer, form circulation; This water main adopts S shape or in-line structure according to design voltage grade, adopts flange to be connected, end face seal with described valve section water pipe; Between the water pipe with the different valve section of valve layer, adopt flange or connected by a joint, end face seal or the sealing of " O " shape sealing ring.
This valve tower, also comprises signal transmission system, for transmission of control signals.Mainly comprise signal transmission slot and signal transmssion line; Described signal transmission slot is arranged in described valve tower both sides; The signal transmssion line groove of described valve interlayer is arranged on insulating support; Described signal transmssion line from bottom to top lays, in described signal transmission slot is dispensed to each described valve layer valve section.
The water distribution pipeline of this valve tower and/or described signal transmission slot, adopt engineering plastics; Water distribution main line and/or described signal transmission slot adopt S shape or yi word pattern structure.
This valve tower can also comprise radome, by mounting bracket and be bolted between different described valve section two ends and/or described valve section.In the time that design voltage is relatively low, radome can save.
Current transformer in valve tower is the voltage-source type current transformers such as many level current transformers, mixed multi-level current transformer, or two level cascade converters.
Valve tower entirety is supported in ground by supporting insulator; Between adjacent described valve layer, supporting insulator is connected, outside connected by oblique pull insulator; Between described valve section, use oblique pull insulator to be connected.
Below in conjunction with accompanying drawing, the present invention is further described.As shown in Fig. 1 ~ 3, in figure: 1. valve layer; 2. radome; 3. post insulator one; 4. valve section; 5. valve section water pipe; 6. branch road water pipe; 7. valve segment signal transmission wire casing; 8. valve segment frames; 9. current transformer; 10. connect copper bar; 11. mounting guide rails; 12. insulating supports; 13. insulation crossbeams; 14. oblique pull insulators; 15. valve interlayer signal transmssion line grooves; 16. post insulators two; 17. water distribution pipelines; 18. water mains; 19. signal transmission main line grooves; 20. pipe buses (or flexible conductor); 21. post insulators three; 22. exchange end of incoming cables; 23. direct current leading-out terminals.
The converter valve tower that the present invention proposes mainly comprises at least one valve layer, electrical transmission system, signal transmission system, water distribution system and plays the mounting system of connection function.
This valve tower adopts vertical structure, valve tower entirety is supported in ground by supporting insulator, between the upper and lower every arrangement of valves layer, adjacent valve interlayer is by supporting insulator connected structure, and outside connected by oblique pull insulator, water distribution pipeline and signal transmssion line groove are distributed in respectively two ends, valve tower left and right, from bottom to top be dispensed to one by one each valve layer, adopt voltage-source type current transformer, be distributed in the different valve sections of different valve layers, exchange input and all complete by pipe bus or flexible conductor with the direct current output after current transformer transforms.
Wherein each valve layer comprises multiple valve sections (4).Preferentially, adopt three above valve sections, press arranged in form in one line with layer valve section.Valve section connects first current transformer of end current transformer and adjacent valve section by connecting copper bar, become series connection form.Between valve layer, connect by post insulator one (3), adopt bolted.
In each valve section, there are several current transformers (9) to be used for voltage transitions.In each valve section, mainly comprise valve section water pipe (5), valve segment signal transmission wire casing (7), valve segment frames (8), several current transformers (9), connect copper bar (10), insulating support 12.Can also comprise mounting guide rail (11) and insulation crossbeam (13).Described current transformer can be selected many level current transformers, mixed multi-level current transformer, two level cascade converters etc.Wherein, connect copper bar and be used for connecting current transformer, form installing insulating support on cascaded structure valve segment frames, adopt bolted form.Valve section water pipe, valve interlayer transmission wire casing are arranged on insulating support.Installing hole is offered in valve segment signal transmission wire casing 7 bottoms, utilizes bolted location.According to actual design demand number, on valve section water pipe, offer the water outlet branch road of corresponding number, be connected to current transformer heat dissipation element by branch road water pipe.
In addition, valve section can also comprise insulation crossbeam, adopts bolt to be connected with valve segment frames left and right, and described current transformer can be by guide rails assembling on valve section bottom insulation crossbeam.Special mounting guide rail make current transformer flexibly, detachable, install simple and easy, stable and reliable operation.This insulation crossbeam material can be epoxy material.
Electrical transmission system mainly comprises interchange end of incoming cables (22), the direct current leading-out terminal (23) on pipe bus (or flexible conductor) (20), pipe bus (or flexible conductor).Pipe bus (or flexible conductor) is positioned on valve segment frames (8) by post insulator three (21), successively install according to valve number of plies amount, converter valve AC-DC conversion, by the interchange end of incoming cables input on pipe bus (or flexible conductor), from bottom to top, after each valve section current transformer (9) and each pipe bus (or flexible conductor), exported by direct current leading-out terminal one by one.Exchange inlet wire section 22 interchangeable with direct current leading-out terminal 23 positions.Exchange inlet wire after bottom or head tube bus (or flexible conductor) access, each current transformer of series valve layer and last layer pipe bus (or flexible conductor) successively, until be connected with direct current outlet after last current transformer of Fa Ta the superiors valve group.
Signal transmission system mainly comprises: signal transmssion line, signal transmission main line groove (19), valve interlayer signal transmission slot (15), valve segment signal transmission wire casing (7).Between valve, signal transmssion line groove is arranged in converter valve tower both sides.Installing hole is offered in valve segment signal transmission wire casing (7) bottom, utilizes bolted location.Valve interlayer signal transmssion line groove (15) is arranged on insulating support (12).Signal transmssion line from bottom to top lays, and is dispensed to each valve layer valve segment signal transmission wire casing through signal transmission main line groove.Signal transmssion line groove preferably adopts that mechanical performance is strong, flame retardant rating is high, the engineering plastics of excellent electrical properties.
Water distribution system mainly comprises: valve section water pipe (5), branch road water pipe (6), water distribution pipeline (17), water main (18).According to actual design demand number, on valve section water pipe, offer the water outlet branch road of corresponding number, be connected to current transformer heat dissipation element by branch road water pipe.Water distribution from bottom to top, in water main is dispensed to each valve layer valve section water pipe, forms circulation.Water main adopts S shape or in-line structure according to design voltage grade, adopts flange to be connected, end face seal with valve section water pipe.Between the water pipe with the different valve section of layer, adopt flange or connected by a joint, end face seal or the sealing of " O " shape sealing ring.Preferential employing by appointing joint to connect, improves the sealing of contact end face.Water distribution pipeline preferably adopts that mechanical performance is strong, flame retardant rating is high, the engineering plastics of excellent electrical properties, and water distribution main line and signal transmission main line groove adopt S shape or yi word pattern structure, and in the time of voltage levels, suggestion adopts S shape structure.
The mounting system that plays connection function comprises foregoing each class framework, support, pillar, crossbeam, connection copper bar, oblique pull insulator etc.For example, after being connected with post insulator 2 16, valve layer adopt bolted to support and ground, the valve Room.Between converter valve layer, between valve section, all adopt oblique pull insulator (14) to be connected, strengthen its mechanical performance and electric property.
For valve tower of the present invention, in the time that design voltage is higher, can also comprise radome (2) in addition.Radome is by mounting bracket and be bolted between different valve section two ends and valve section, ensures that converter valve is in service without point discharge phenomenon, and when design voltage is relatively low, radome can save.
More than show and only described principal character of the present invention and inventive point.Those skilled in the art should understand, and the present invention is not restricted to the described embodiments.Do not departing under the prerequisite of inventive point and protection range, the present invention also has various variations, and these changes and improvements all will fall in the scope of protection of present invention.
Claims (10)
1. the flexible DC power transmission converter valve tower based on voltage source converter, is characterized in that, described valve tower adopts vertical structure, and integrated support is in ground; Described valve tower comprises at least one valve layer, and each described valve layer is arranged above and below, and configures independently water distribution pipeline; Each described valve layer comprises at least one valve section, the described valve section word order in described each valve layer, and described each valve section comprises that several flexible DC power transmission current transformers have been used for voltage transitions, all described current transformer series connection in described valve tower.
2. valve tower as claimed in claim 1, is characterized in that, also comprises electric energy transmission system, for alternating current being sent into the each described current transformer of described valve tower, and the direct current after described each current transformer conversion is sent to described valve tower.
3. valve tower as claimed in claim 2, is characterized in that, described electric energy transmission system comprises: interchange end of incoming cables, direct current leading-out terminal on pipe bus or flexible conductor, described pipe bus or flexible conductor; Described pipe bus or flexible conductor are positioned on the framework of described valve section, successively install according to described valve layer; Alternating current is inputted by described interchange end of incoming cables, from bottom to top, connects one by one and after current transformer, is exported by described direct current leading-out terminal described in each; Or, by described interchange end of incoming cables and described direct current leading-out terminal location swap, adopt arrangement from top to bottom.
4. valve tower as claimed in claim 1, is characterized in that, described water distribution pipeline, for heat radiation, comprises valve section water pipe, branch road water pipe, water main; On described valve section water pipe, offer water outlet branch road, be connected to the heat dissipation element of described current transformer by described branch road water pipe; When water distribution, from bottom to top, in described water main is dispensed to the described valve section water pipe of described each valve layer, form circulation; Described water main adopts S shape or in-line structure according to design voltage grade, adopts flange to be connected, end face seal with described valve section water pipe; Between the water pipe with the different valve section of valve layer, adopt flange or connected by a joint, end face seal or the sealing of " O " shape sealing ring.
5. valve tower as claimed in claim 4, is characterized in that, also comprises signal transmission system, for transmission of control signals, comprises signal transmission slot and signal transmssion line; Described signal transmission slot is arranged in described valve tower both sides; The signal transmssion line groove of described valve interlayer is arranged on insulating support; Described signal transmssion line from bottom to top lays, in described signal transmission slot is dispensed to each described valve layer valve section.
6. the valve tower as described in claim 4 or 5, is characterized in that, described water distribution pipeline and/or described signal transmission slot adopt engineering plastics; Water distribution main line and/or described signal transmission slot adopt S shape or yi word pattern structure according to design voltage grade.
7. valve tower as claimed in claim 1, is characterized in that, also comprises radome, by mounting bracket and be bolted between different described valve section two ends and/or described valve section.
8. valve tower as claimed in claim 1, is characterized in that, described current transformer is many level current transformers, mixed multi-level current transformer, or two level cascade converters.
9. valve tower as claimed in claim 1, is characterized in that, described valve tower entirety is supported in ground by supporting insulator; Between adjacent described valve layer, supporting insulator is connected, outside connected by oblique pull insulator; Between described valve section, use oblique pull insulator to be connected.
10. valve tower as claimed in claim 1, is characterized in that, described valve section bottom also comprises and insulation crossbeam be connected with valve segment frames, described current transformer by guide rails assembling on described insulation crossbeam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420000785.8U CN203645559U (en) | 2014-01-02 | 2014-01-02 | Flexible dc power-transmission converter valve tower based on voltage-source current transformers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420000785.8U CN203645559U (en) | 2014-01-02 | 2014-01-02 | Flexible dc power-transmission converter valve tower based on voltage-source current transformers |
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| CN203645559U true CN203645559U (en) | 2014-06-11 |
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| CN201420000785.8U Expired - Lifetime CN203645559U (en) | 2014-01-02 | 2014-01-02 | Flexible dc power-transmission converter valve tower based on voltage-source current transformers |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715916A (en) * | 2014-01-02 | 2014-04-09 | 常州博瑞电力自动化设备有限公司 | Flexible direct-current power transmission converter valve tower based on voltage source converters |
| CN106033935A (en) * | 2015-03-19 | 2016-10-19 | 南京南瑞继保电气有限公司 | Flexible DC power transmission converter valve tower |
| CN110130295A (en) * | 2016-12-08 | 2019-08-16 | 西安许继电力电子技术有限公司 | Offshore wind power flexible DC power transmission converter station bridge arm valve tower layout and offshore platform |
| CN110957930A (en) * | 2019-12-12 | 2020-04-03 | 全球能源互联网研究院有限公司 | Converter valve tower structure |
| CN111969634A (en) * | 2019-05-20 | 2020-11-20 | 南京南瑞继保工程技术有限公司 | Valve tower reinforced structure |
| CN112448598A (en) * | 2019-09-03 | 2021-03-05 | 许继电气股份有限公司 | Flexible direct current converter valve tower |
-
2014
- 2014-01-02 CN CN201420000785.8U patent/CN203645559U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715916A (en) * | 2014-01-02 | 2014-04-09 | 常州博瑞电力自动化设备有限公司 | Flexible direct-current power transmission converter valve tower based on voltage source converters |
| CN106033935A (en) * | 2015-03-19 | 2016-10-19 | 南京南瑞继保电气有限公司 | Flexible DC power transmission converter valve tower |
| CN106033935B (en) * | 2015-03-19 | 2018-07-20 | 南京南瑞继保电气有限公司 | A kind of flexible direct current transmission converter valve valve tower |
| CN110130295A (en) * | 2016-12-08 | 2019-08-16 | 西安许继电力电子技术有限公司 | Offshore wind power flexible DC power transmission converter station bridge arm valve tower layout and offshore platform |
| CN111969634A (en) * | 2019-05-20 | 2020-11-20 | 南京南瑞继保工程技术有限公司 | Valve tower reinforced structure |
| US11753843B2 (en) | 2019-05-20 | 2023-09-12 | Na Engineering Co., Ltd. | Valve tower reinforcing structure and reinforcing method |
| CN112448598A (en) * | 2019-09-03 | 2021-03-05 | 许继电气股份有限公司 | Flexible direct current converter valve tower |
| CN110957930A (en) * | 2019-12-12 | 2020-04-03 | 全球能源互联网研究院有限公司 | Converter valve tower structure |
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