CN111384708B - Main branch valve component for direct current breaker - Google Patents
Main branch valve component for direct current breaker Download PDFInfo
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- CN111384708B CN111384708B CN201811628051.3A CN201811628051A CN111384708B CN 111384708 B CN111384708 B CN 111384708B CN 201811628051 A CN201811628051 A CN 201811628051A CN 111384708 B CN111384708 B CN 111384708B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000009434 installation Methods 0.000 abstract description 6
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 230000017525 heat dissipation Effects 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/268—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for dc systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
Abstract
The invention relates to a main branch valve assembly for a direct current breaker, which comprises an assembly frame, wherein a front valve section unit and a rear valve section unit are arranged on the assembly frame, each valve section unit comprises a plurality of IGBT units which are assembled together in a compression joint mode along the left and right direction, each IGBT unit comprises an IGBT and a backward diode, the IGBTs in each IGBT unit are arranged in parallel with the backward diode, two IGBT units which are connected in series in the front valve section unit and two IGBT units which are connected in series in the rear valve section unit are connected in parallel to form a sub-module, the connecting point of the two IGBT units of the front valve section unit in the sub-module is electrically connected with the connecting point of the two IGBT units of the rear valve section unit, a lightning arrester and/or a bypass switch are arranged on the assembly frame, and a power supply unit is further arranged on the assembly frame. During installation, the corresponding valve section units are integrally installed on the assembly frame, and during connection, the corresponding IGBT units in the front valve section unit and the rear valve section unit are correspondingly connected to form a sub-module.
Description
Technical Field
The invention relates to a main branch valve assembly for a direct current breaker.
Background
At present, the high-voltage direct-current transmission technology is widely applied in China, particularly the flexible direct-current transmission technology, and the direct-current transmission technology is applied to short-distance and small-capacity transmission occasions. The high-voltage direct-current circuit breaker is very important equipment in a flexible direct-current transmission system, and the hybrid direct-current circuit breaker is widely applied to the flexible direct-current transmission system due to the advantages of small on-state loss, short on-off time, no need of special cooling and the like.
The hybrid direct current circuit breaker generally comprises a main branch, a transfer branch, an energy consumption branch and the like, wherein the main branch is a main through-flow branch, a quick isolating switch and an electronic load switch are generally arranged on the main branch in series, the electronic load switch is formed by connecting modules formed by a plurality of IGBTs in series, the transfer branch is formed by connecting a plurality of IGBT electronic modules in series, and each IGBT electronic module is provided with a plurality of IGBT devices which are connected according to a set topological structure so as to realize a certain specific function. The lightning arrester is arranged on the energy consumption branch, and electric energy on the corresponding branch can be transferred to the energy consumption branch to be consumed by controlling the IGBT electronic module. During specific assembly, because direct current breaker's module quantity is more, the mode commonly used at present utilizes the form of crimping valve section to assemble the IGBT device together, like the super high voltage direct current breaker power electronics branch circuit valve section structure disclosed in the chinese utility model patent of grant bulletin number CN207588445U, grant bulletin day 2018.07.06, this valve section structure includes frame set spare and sets up two IGBT modules, two diode modules and a plurality of RC snubber circuit module in frame set spare. Each module is fixed into a valve section through two side pressure plates and four insulating pull rods, and the side pressure plates are installation end plates.
In the prior art, there are many topological structures corresponding to a main branch, for example, a main electronic switch branch unit disclosed in chinese patent application publication No. CN104980137A and application publication No. 2015.10.14, a plurality of sub-modules arranged in series are provided on the main branch, each sub-module includes two groups of IGBT units, each IGBT unit includes 1 IGBT and 1 reverse diode, and each sub-module is connected in parallel with 1 arrester. At present, considering that the sub-module bearing capacity needs to be increased, two groups of IGBT units are respectively added corresponding to each sub-module to form a main branch of the circuit topology structure shown in fig. 1. The number of IGBT units in the topological structure is doubled, and a main branch valve assembly with a new connecting structure needs to be designed to facilitate connection and assembly between modules.
Disclosure of Invention
The invention provides a main branch valve component for a direct current breaker, which is convenient for module assembly and connection.
In order to achieve the purpose, the technical scheme of the main branch valve component for the direct current breaker is as follows:
a main branch valve assembly for a direct current breaker comprises an assembly frame, wherein a front valve section unit and a rear valve section unit are arranged on the assembly frame along the front-rear direction, each valve section unit comprises a plurality of IGBT units which are assembled together in a compression joint manner along the left-right direction, each IGBT unit comprises an IGBT and a backward diode, the IGBTs in each IGBT unit are arranged in parallel with the backward diode, two IGBT units which are sequentially arranged in series along the left-right direction in the front valve section unit and two IGBT units which are sequentially arranged in series along the left-right direction in the rear valve section unit are correspondingly connected in parallel to form a sub-module, a connecting point of the two IGBT units belonging to the front valve section unit in the sub-module is electrically connected with a connecting point of the two IGBT units belonging to the rear valve section unit, a plurality of sub-modules are sequentially arranged in series on the assembly frame, lightning arresters and/or bypass switches which are connected to two ends of the corresponding sub-modules in parallel are respectively arranged on the assembly frame, the sub-modules are sequentially arranged in series, and the assembly frame is also provided with a power supply unit for supplying power to the IGBT units.
The invention has the beneficial effects that: in the main branch valve assembly provided by the invention, each IGBT unit is manufactured into a valve section unit, when in installation, the corresponding valve section unit is integrally installed on the assembly frame, when in connection, the corresponding IGBT units in the front valve section unit and the rear valve section unit are correspondingly connected according to the corresponding relation between the front part and the rear part to form a sub-module, and the connection points of the two corresponding IGBT units of the corresponding valve section units can be conveniently and correspondingly and conductively connected according to the corresponding relation between the front part and the rear part according to the structural requirements of a topological circuit.
Furthermore, the IGBT units in the front valve section unit and the IGBT units in the rear valve section unit are sequentially connected in series in a reverse direction, when the valve body is placed and pressed, the IGBT units pressed later and the IGBT units pressed earlier only need to be reversed, and the IGBT units are conveniently and sequentially pressed in the valve section units.
Furthermore, be equipped with on the subassembly frame arrester and bypass switch, power supply unit, preceding valve section unit, back valve section unit, bypass switch unit arrange from the front backward in proper order, are equipped with the control unit who is used for controlling each IGBT between preceding valve section unit in the back, the arrester is correspondingly arranged the control unit below, bypass switch and power supply unit are located both ends, and it is comparatively convenient to change bypass switch and power supply unit.
Furthermore, the front valve section unit and the rear valve section unit are located at the middle position of the assembly frame in the front-rear direction, and the front valve section and the rear valve section are located in the middle and are convenient to mount and electrically connected.
Furthermore, in the same sub-module, the connecting points of the two IGBT units belonging to the front valve section unit are in conductive connection with the connecting points of the two IGBT units belonging to the rear valve section unit through an upper connecting row, the two IGBT units belonging to the front valve section unit and the two IGBT units belonging to the rear valve section unit are arranged in parallel through a lower connecting row, one end of the lower connecting row is in conductive connection with the corresponding IGBT unit in the front valve section unit, the other end of the lower connecting row is in conductive connection with the corresponding IGBT unit in the rear valve section unit, the lower connecting row is positioned below the upper connecting row, and circuits in conductive connection with the two ends of the sub-module are separated from circuits in the sub-module through upper and lower layers of copper bars, so that the assemblies are more orderly, convenient to install and difficult to make mistakes.
Further, the both ends of arrester are connected with corresponding lower floor's bank of connections electrically conductively in order to arrange the arrester in parallel at corresponding submodule piece both ends, because the arrester sets up between the front and back valve section, with arrester and lower floor's bank of connections electrically conductively connected simple and convenient more.
Furthermore, the assembly frame comprises insulating beams which are sequentially arranged at intervals in the front-back direction and connecting beams which fixedly assemble all the insulating beams together, all the lightning arresters are fixedly assembled together to form lightning arrester units, all the bypass switches are fixedly assembled together to form bypass switch units, and the power supply units, the lightning arrester units and the bypass switch units are arranged on the insulating beams in a one-to-one correspondence mode, so that the assembly frame is simple and convenient to install.
Further, the power supply unit is a magnetic ring energy taking unit.
Further, each valve section unit includes respectively with corresponding IGBT unit a plurality of radiators of arranging in turn in proper order, each valve section unit has two at least parallelly connected heat dissipation water routes of arranging respectively, it is a plurality of to establish ties respectively on each heat dissipation water route the radiator, set up a plurality of parallelly connected water routes and can make each radiator intake temperature more even to it is more even to make the heat dissipation.
Drawings
FIG. 1 is a circuit schematic of a main branch topology;
FIG. 2 is a schematic structural diagram of an embodiment of a main bypass valve assembly for a DC circuit breaker according to the present invention;
FIG. 3 is a front view of the valve assembly of FIG. 2;
FIG. 4 is a bottom view of the valve assembly of FIG. 2;
FIG. 5 is a schematic view of the structure of the module frame of FIG. 2;
FIG. 6 is a schematic structural view of the valve segment of FIG. 2;
description of reference numerals: 1-a component frame; 11-an insulating beam; 12-a connecting beam; 2-a front valve section unit; 21-disc spring unit; 22-a heat sink; 23-IGBT cells; 24-an insulating tie rod; 25-mounting an end plate; 26-ball stud; 27-a radiator support beam; 28-stay bolts; 29-water inlet and outlet; 3-a rear valve section unit; 4-a control unit; 5-a power supply unit; 6-a bypass switch; 7-a lightning arrester unit; 8-copper bar; 81-upper layer connecting row; 82-lower tier connecting rows.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 2 and 3, the main branch valve assembly for the dc circuit breaker in the embodiment includes an assembly frame 1, a power supply unit 5, a front valve section unit 2, a rear valve section unit 3, and a bypass switch 6 are arranged on the assembly frame 1 along a front-rear direction, a control unit 4 for controlling an IGBT is arranged between the front valve section unit 2 and the rear valve section unit 3, and a lightning arrester unit 7 is arranged below the control unit 4 in sequence. The power supply unit in this embodiment is a magnetic ring energy taking unit.
As shown in fig. 5, the assembly frame 1 includes connecting beams 12 arranged in the front-rear direction and insulating beams 11 connecting and fixing the two connecting beams 12, the insulating beams 11 are of a channel shape, and the connecting beams 12 and the insulating beams 11 are fixed together by bolts. As shown in fig. 2 and 3, the power supply unit 5, the front valve section unit 2, the rear valve section unit 3, and the bypass switch 6 in the present embodiment are arranged on the module frame 1 in this order in the front-rear direction. The front valve section unit 2 and the rear valve section unit 3 are located in the middle for convenient installation and for conductive connection of the IGBT units 23 in the two valve section units. And place power supply unit and bypass switch at both ends, power supply unit and bypass switch change all comparatively convenient.
The control unit 4 for controlling the IGBT is arranged between the front valve section unit 2 and the rear valve section unit 3, the lightning arrester unit 7 is arranged below the control unit 4, the control unit 4 for controlling the IGBT is arranged between the front valve section unit 2 and the rear valve section unit 3, and the lightning arrester unit 7 is arranged below the control unit 4, so that the assembly structure is more compact. In this embodiment, the arrester unit 7 and the bypass switch 6 are both installed on the frame in the form of a module assembly, that is, the arrester and the bypass switch are fixed on the fixing plate to form the arrester unit 7 and the bypass switch unit, and then the arrester unit 7 and all the bypass switches 6 are installed on the assembly frame 1 as a unit, so that the installation is simpler.
In this embodiment, the front valve section unit 2 and the rear valve section unit 3 each include a plurality of IGBT units 23 that are press-fitted together along the left-right direction, each IGBT unit 23 includes an IGBT and a backward diode, the IGBTs and the backward diodes in each IGBT unit 23 are arranged in parallel, two IGBT units 23 that are sequentially arranged in series along the left-right direction in the front valve section unit 2 and two IGBT units 23 that are sequentially arranged in series along the left-right direction in the rear valve section unit 3 are correspondingly connected in parallel to form a sub-module, a connection point of the two IGBT units 23 that belong to the front valve section unit 2 and a connection point of the two IGBT units 23 that belong to the rear valve section unit 3 in the sub-module are electrically connected, and a plurality of sub-modules are sequentially arranged in series on the assembly frame 1. In this embodiment, for 4 IGBT units 23 belonging to the same sub-module, two IGBT units 23 are front IGBT units belonging to a front valve section unit, the other two IGBT units 23 are rear IGBT units belonging to a rear valve section unit, the two front IGBT units are sequentially arranged in series in a reverse direction, and the two rear IGBT units are sequentially arranged in series in a reverse direction. The circuit diagram of the main branch valve assembly for the dc breaker in this embodiment is shown in fig. 1.
Two IGBT units 23 of the same sub-module of direct current breaker main branch valve subassembly in the valve section are connected in series in the reverse direction and are arranged together, and set up IGBT unit 23 in the same sub-module respectively on preceding valve section unit 2 and back valve section unit 3, so, treat in two valve section units and correspond the IGBT unit 23 of corresponding conductive connection and arrange along the fore-and-aft direction correspondence, during the connection, only need connect around in proper order can, make the connection between the valve section unit in the whole valve subassembly comparatively simple, and is convenient, and then the erection joint of whole valve subassembly has been improved.
As shown in fig. 6, the valve section structure in this embodiment is similar to the valve section structure of the power electronic branch valve section structure of the ultra-high voltage dc circuit breaker in the background art, the valve section includes a middle frame extending along the left-right direction and two mounting end plates 25 fixedly arranged at two ends of the middle frame, the two mounting end plates 25 of the valve section are fixedly connected by four insulating pull rods 24, and the four insulating pull rods 24 constitute the middle frame. The two mounting end plates 25 are provided with clamping devices for matching use to clamp and position the IGBT and the radiator 22 in the left-right direction, one of the clamping devices is a disc spring jacking device for applying an acting force by an external loading mechanism, the other clamping device is a rigid jacking device, the rigid jacking device is provided with a ball stud 26, and the ball stud 26 applies a certain pressure to the disc spring unit 21, so that the pressure on the surface of the IGBT is ensured within a normal working range.
As shown in fig. 4, a plurality of IGBTs and radiators 22 are held between two mounting end plates 25 of the valve block, and the radiators 22 are spaced apart from the IGBTs, so that sufficient heat radiation from each IGBT can be ensured by the radiators 22. A radiator supporting beam 27 is also arranged in the valve section, and two ends of the radiator 22 are hung on the radiator supporting beam 27 through supporting studs. In this embodiment, each valve segment is divided into three paths of heat dissipation water paths arranged in parallel, each path of heat dissipation water path is provided with a respective water inlet and outlet 29, each path of heat dissipation water path is connected with six radiators 22 in series, under the condition that the number of the radiators 22 in the valve segment is large, a plurality of heat dissipation water paths are arranged in each valve segment, so that heat dissipation is more uniform, and the condition that the heat dissipation is poor due to the fact that the water inlet temperature of the radiator 22 located at the tail end of the water path is too high is avoided. In other embodiments, under the condition that the number of radiators in the valve section is small, each valve section may also be provided with only one heat dissipation waterway, as long as the heat dissipation efficiency is ensured.
As shown in fig. 5, in this embodiment, the front valve section unit 2 and the rear valve section unit 3 are connected through an upper connecting row 81 and a lower connecting row 82, the upper connecting row 81 connects the front valve section unit 2 and the rear valve section unit 3 in each sub-module in a conductive manner, the lower connecting row 82 is connected with the corresponding IGBT unit 23 in a conductive manner as a sub-module two-end connecting piece, the circuits of conductive connection at the two ends of the sub-module are separated from the circuits of conductive connection in the sub-module through an upper copper bar 8 and a lower copper bar 8, so that the assembly is more ordered, and the assembly is convenient to install and is not prone to error.
The both ends of arrester unit 7 and corresponding lower floor connecting row 82 are electrically conductively connected, because arrester unit 7 sets up between the front and back valve section, it is more simple and convenient to be electrically conductively connected arrester unit 7 and lower floor connecting row 82. Copper bar 8 in this embodiment is the flexible coupling copper bar, simultaneously because each valve section unit is elasticity valve section unit, this kind of elasticity valve section unit is when IGBT unit 23 and radiator need be changed, push open the both sides device that the device of waiting to be changed of corresponding pressure equipment, the device of waiting to change is removed, and with new device immigration, then make both sides device again under the effect of the elastic component of elasticity valve section unit press from both sides tight newly-changed device can, needn't dismantle unnecessary device when IGBT is maintained and is changed, it is comparatively convenient to change.
In other embodiments, the IGBTs of the same sub-module in the same valve section may be connected in series in the reverse direction, and the directions of two adjacent IGBT units 23 in the two sub-modules are the same, as long as it is ensured that two adjacent IGBT units 23 belonging to the same sub-module and located in the same valve section unit are connected in series in the reverse direction.
In other embodiments, the IGBT units 23 in each sub-module may also be connected by using a hard bus bar, or by using a laminated bus bar.
In this embodiment, not only the bypass switch but also the surge arrester unit are provided, and in other embodiments, only the bypass switch or only the surge arrester unit may be provided depending on the actual circuit configuration. In other embodiments, instead of mounting the surge arrester or the bypass switch as a unit on the assembly frame as a whole, each surge arrester or bypass switch may be separately mounted on the insulating beam.
In other embodiments, the upper layer connection bank and the lower layer connection bank may not be distinguished, and the connection bank connecting the two ends of the front IGBT unit 23 and the rear IGBT unit 23 in the same sub-module and the connection bank connecting the connection point of the front IGBT unit 23 and the connection point of the rear IGBT unit 23 are arranged on the same plane, and attention should be paid to insulation between the connection banks and installation position.
Claims (8)
1. A main branch valve component for a direct current breaker is characterized in that: the assembly frame is provided with a front valve section unit and a rear valve section unit along the front-rear direction, each valve section unit comprises a plurality of IGBT units which are pressed and assembled together along the left-right direction, each IGBT unit comprises an IGBT and a backward diode, the IGBTs in each IGBT unit are arranged in parallel with the backward diode, two IGBT units which are sequentially arranged in series along the left-right direction in the front valve section unit and two IGBT units which are sequentially arranged in series along the left-right direction in the rear valve section unit are correspondingly connected in parallel to form a sub-module, a connecting point of the two IGBT units belonging to the front valve section unit in the sub-module is in conductive connection with a connecting point of the two IGBT units belonging to the rear valve section unit, the assembly frame is sequentially arranged with a plurality of sub-modules in series, the assembly frame is respectively provided with lightning arresters and/or bypass switches which are connected in parallel at two ends of the corresponding sub-modules, each submodule is sequentially connected in series, a power supply unit used for supplying power to each IGBT unit is further arranged on the assembly frame, the assembly frame is provided with the lightning arrester and the bypass switch, the power supply unit, the front valve section unit, the rear valve section unit and the bypass switch unit are sequentially arranged from front to back, a control unit used for controlling each IGBT is arranged between the front valve section unit and the rear valve section unit, and the lightning arrester is correspondingly arranged below the control unit.
2. The main bypass valve assembly for a dc circuit breaker according to claim 1, wherein: and the IGBT units in the front valve section unit and the rear valve section unit are sequentially connected in series in a reverse direction.
3. The main branch valve assembly for a dc breaker according to claim 1 or 2, wherein: the front and rear valve section units are located at an intermediate position of the module frame in the front-rear direction.
4. A main bypass valve assembly for a dc circuit breaker according to claim 3, wherein: in the same submodule, the connecting points of the two IGBT units belonging to the front valve section unit are in conductive connection with the connecting points of the two IGBT units belonging to the rear valve section unit through an upper connecting row, the two IGBT units belonging to the front valve section unit and the two IGBT units belonging to the rear valve section unit are arranged in parallel through a lower connecting row, one end of the lower connecting row is in conductive connection with the corresponding IGBT unit in the front valve section unit, the other end of the lower connecting row is in conductive connection with the corresponding IGBT unit in the rear valve section unit, and the lower connecting row is located below the upper connecting row.
5. The main bypass valve assembly for a dc circuit breaker according to claim 4, wherein: and the two ends of the lightning arrester are in conductive connection with the corresponding lower-layer connecting bar so as to arrange the lightning arrester at the two ends of the corresponding sub-module in parallel.
6. The main branch valve assembly for a dc breaker according to claim 1 or 2, wherein: the assembly frame comprises insulating beams which are sequentially arranged at intervals in the front-back direction and connecting beams which fixedly assemble all the insulating beams together, all the lightning arresters are fixedly assembled together to form lightning arrester units, all the bypass switches are fixedly assembled together to form bypass switch units, and the power supply units, the lightning arrester units and the bypass switch units are arranged on the insulating beams in a one-to-one correspondence mode.
7. The main branch valve assembly for a dc breaker according to claim 1 or 2, wherein: the power supply unit is a magnetic ring energy taking unit.
8. The main branch valve assembly for a dc breaker according to claim 1 or 2, wherein: each valve section unit comprises a plurality of radiators which are sequentially and alternately arranged with the corresponding IGBT units, each valve section unit is respectively provided with at least two radiating water paths which are arranged in parallel, and the radiators are respectively connected in series on each radiating water path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811628051.3A CN111384708B (en) | 2018-12-28 | 2018-12-28 | Main branch valve component for direct current breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811628051.3A CN111384708B (en) | 2018-12-28 | 2018-12-28 | Main branch valve component for direct current breaker |
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| Publication Number | Publication Date |
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| CN111384708A CN111384708A (en) | 2020-07-07 |
| CN111384708B true CN111384708B (en) | 2022-05-20 |
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| CN201811628051.3A Active CN111384708B (en) | 2018-12-28 | 2018-12-28 | Main branch valve component for direct current breaker |
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| CN113488347A (en) * | 2021-07-30 | 2021-10-08 | 北京电力设备总厂有限公司 | Power electronic switch group of direct current breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106611679A (en) * | 2015-10-23 | 2017-05-03 | 国网智能电网研究院 | Full-bridge cascaded high-voltage DC circuit breaker valve module |
| CN105895458A (en) * | 2016-05-26 | 2016-08-24 | 许继电气股份有限公司 | DC circuit breaker and power assembly for transfer branch of DC circuit breaker |
| CN107453336A (en) * | 2017-07-05 | 2017-12-08 | 全球能源互联网研究院 | One kind cascade full-bridge direct current breaker |
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