CN111509994B - Submodule for direct-current transmission converter valve and valve set module for direct-current transmission converter valve - Google Patents
Submodule for direct-current transmission converter valve and valve set module for direct-current transmission converter valve Download PDFInfo
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- CN111509994B CN111509994B CN201910092779.7A CN201910092779A CN111509994B CN 111509994 B CN111509994 B CN 111509994B CN 201910092779 A CN201910092779 A CN 201910092779A CN 111509994 B CN111509994 B CN 111509994B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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Abstract
The invention relates to a submodule for a direct-current transmission converter valve and a valve group module for the direct-current transmission converter valve. The submodule for the direct-current transmission converter valve comprises a submodule base, a capacitor component and a power unit are arranged on the submodule base, the power unit comprises a compression joint type valve section, a capacitor laminated busbar which is in conductive connection with the capacitor component is arranged in front of the capacitor component, a radiator laminated busbar which is in conductive connection with a corresponding water-cooled radiator is arranged on the compression joint type valve section, and the radiator laminated busbar is in corresponding conductive connection with the capacitor laminated busbar. Compared with the mode that the power valve section press-fitting unit and the capacitor are connected through the copper bars in the prior art, the laminated busbar pair can meet the requirement of multi-potential electrical clearance in the sub-module, meanwhile, the installation space is saved, the installation structure is compact, the laminated busbar pair is more convenient to install and fix, the laminated busbar pair does not need to be connected through the copper bars in a one-to-one correspondence mode, and connection is not prone to errors.
Description
Technical Field
The invention relates to a submodule for a direct-current transmission converter valve and a valve group module for the direct-current transmission converter valve.
Background
The flexible high-voltage direct-current transmission is a novel direct-current transmission technology based on a voltage source converter, a turn-off device and a pulse width modulation technology. The power transmission technology can instantly realize active and reactive independent decoupling control, can supply power to a passive network, does not need communication between converter stations, and is easy to form a multi-terminal direct current system. In addition, the power transmission technology can provide emergency support of active power and reactive power for the system at the same time, and has advantages in the aspects of improving the stability and power transmission capacity of the system and the like. With the continuous development of the related technology, the IGBT converter valve with good controlled on-off characteristics has wide application prospect in the field of flexible high-voltage direct-current transmission.
At present, the crimping type IGBT single module and the valve component have wide application prospect, and the structural mode of the existing crimping type IGBT single module and the valve component has certain disadvantages. The invention discloses an IGBT module unit for flexible direct current power transmission, which is disclosed in Chinese patent with the publication number of CN105024527B and publication date of 2017.12.26, and comprises an installation frame, a submodule crimping unit is fixedly arranged at the front part of the installation frame, the submodule crimping unit comprises a middle frame extending along the left-right direction and two installation end plates fixedly arranged at the left end and the right end of the middle frame, at least two submodules and an inter-module insulation stop block which are sequentially arranged in detail in the left-right direction are arranged on the middle frame, and each submodule comprises an IGBT and a thyristor. And the rear part of the mounting frame is fixedly provided with capacitors connected with the electrical appliances corresponding to the sub-modules one to one. Adopt this kind of mode to connect on same installation frame in every valves neutron module, the dismouting is comparatively loaded down with trivial details under the more condition of submodule piece.
The invention discloses a hybrid rapid direct current breaker, which is disclosed by Chinese patent with an authorized publication number of CN106558864A and an authorized publication date of 2017.04.05, and comprises a main through-current branch, a current transfer branch and an energy consumption branch. The main through-flow branch is formed by connecting a main branch sub-module and an ultra-high-speed mechanical switch in series, the main branch sub-module comprises a plurality of stages of full-bridge modules connected in series and in parallel, and the full-bridge modules are integrally packaged in the shielding shell. A supporting frame is arranged in the shielding shell, and a full-bridge IGBT press-fitting unit and a capacitor are arranged on the supporting frame. Among the above-mentioned main tributary submodule in the encapsulation shield shell, full-bridge IGBT pressure equipment unit needs to correspond with the condenser and is connected, and at present, realizes corresponding electrically conductive connection through the copper bar of connecting on the radiator mostly. When the number of devices in the press-mounting unit is large and the number of the lead-out potentials is large, the requirements of electrical gaps among the potentials can not be met easily if the devices are still connected by copper bars, and short-circuit faults occur easily to influence the normal functions of the module units.
Disclosure of Invention
The invention aims to provide a submodule for a direct-current transmission converter valve, which aims to solve the technical problem that the requirement of potential clearance cannot be ensured when a plurality of devices of a press-fitting unit are arranged because a press-fitting unit of a power valve section is connected with a capacitor by adopting a copper bar in the prior art; the invention also aims to provide a valve group module for the direct current transmission converter valve, which is convenient to assemble.
In order to achieve the purpose, the technical scheme of the submodule for the direct-current transmission converter valve is as follows:
the direct current transmission converter valve submodule comprises a submodule base extending along the front-back direction, a capacitor component and a power unit located in front of the capacitor component are arranged on the submodule base, the power unit comprises a compression joint type valve section in conductive connection with the capacitor component, the compression joint type valve section comprises a power device and a water-cooling radiator which are in compression joint, two sides of any power device are respectively in conductive connection with the water-cooling radiator, a capacitor laminated busbar in conductive connection with the capacitor component is arranged in front of the capacitor component towards the power unit, a radiator laminated busbar in conductive connection with the corresponding water-cooling radiator is arranged on the compression joint type valve section, the radiator laminated busbar is located on the outer side of the compression joint type valve section in the left-right direction, and the radiator laminated busbar corresponds to the capacitor laminated busbar in conductive connection to achieve conductive connection of the compression joint type valve section and the capacitor component.
The invention has the beneficial effects that: compared with the mode that the power valve section press-fitting unit and the capacitor are connected through the copper bars in the prior art, the laminated busbar pair can meet the requirement of multi-potential electrical clearance in the sub-module, meanwhile, the installation space is saved, the installation structure is compact, the laminated busbar pair is more convenient to install and fix, the laminated busbar pair does not need to be connected through the copper bars in a one-to-one correspondence mode, and connection is not prone to errors.
Furthermore, the positive electrode and the negative electrode of the laminated radiator busbar are directly connected with the positive electrode and the negative electrode of the laminated capacitor busbar in a one-to-one correspondence manner, so that the connection is simple and convenient, and errors are not easy to occur.
Furthermore, the top of the capacitor lamination busbar is provided with a test connecting part, and a test handle can be directly clamped through field installation and test of the test part, so that the capacitor is prevented from being dangerous in live detection.
Further, every submodule piece is provided with inlet tube and the outlet pipe of connecting the water-cooled radiator at the front end, inlet tube and outlet pipe and the water inlet and the delivery port intercommunication on the water-cooled radiator, the water inlet and the delivery port intercommunication that set up inlet tube and outlet pipe and every submodule piece are more simple and convenient when installing a plurality of submodule pieces together on the one hand, on the other hand compares in passing through the technical scheme that the installation frame is fixed together with the valve section of a plurality of submodule pieces, the water temperature that can make the water inlet from every submodule piece get into the radiator is the same and lower, and the heat dissipation efficiency is improved.
The valve group module for the direct current transmission converter valve comprises a valve group base and at least two sequentially serially connected sub-modules which are sequentially arranged along the left and right direction, each sub-module is provided with a sub-module base extending along the front and back direction, a power unit which is provided with a capacitor component and is positioned in front of the capacitor component is arranged on the sub-module base, the power unit comprises a compression joint type valve section which is electrically connected with the capacitor component, the compression joint type valve section comprises a power device and a water-cooling radiator which are pressed together, two sides of any power device are respectively electrically connected with the water-cooling radiator, the capacitor component is provided with a capacitor lamination busbar which is electrically connected with the capacitor component in front of the power unit, the compression joint type valve section is provided with a radiator lamination busbar which is electrically connected with the corresponding water-cooling radiator, the radiator lamination busbar is positioned on the outer side of the compression joint type valve section in the left and right direction, and the radiator lamination busbar are electrically connected with the capacitor lamination busbar correspondingly to realize the conductive connection of the compression joint type valve section and the capacitor component And (4) connecting.
The invention has the beneficial effects that: compared with the mode that the power valve section press-fitting unit and the capacitor are connected through the copper bars in the prior art, the laminated busbar pair can meet the requirement of multi-potential electrical clearance in the sub-module, meanwhile, the installation space is saved, the installation structure is compact, the laminated busbar pair is more convenient to install and fix, the laminated busbar pair does not need to be connected through the copper bars in a one-to-one correspondence mode, and connection is not prone to errors. Moreover, the submodules are sequentially arranged on the valve group base, so that the installation and the replacement are simpler.
Furthermore, the positive electrode and the negative electrode of the laminated radiator busbar are directly connected with the positive electrode and the negative electrode of the laminated capacitor busbar in a one-to-one correspondence manner, so that the connection is simple and convenient, and errors are not easy to occur.
Furthermore, the top of the capacitor lamination busbar is provided with a test connecting part, and a test handle can be directly clamped through field installation and test of the test part, so that the capacitor is prevented from being dangerous in live detection.
Further, every submodule piece is provided with inlet tube and the outlet pipe of connecting water-cooled radiator at the front end, water inlet and delivery port intercommunication on inlet tube and the outlet pipe and the water-cooled radiator, set up the water inlet and the delivery port intercommunication of inlet tube and outlet pipe and every submodule piece, on the one hand, conveniently install a plurality of submodule pieces together, on the other hand compare in the valve section with a plurality of submodule pieces through the technical scheme that the installation frame is fixed together, the water temperature that can make the water inlet from every submodule piece get into the radiator is the same and lower, and the heat radiation efficiency is improved.
Furthermore, at least two pairs of sliding installation guide rails extending in the front-back direction are arranged on the valve group chassis, positioning pins are arranged at the front ends of the sliding installation guide rails, concave portions are arranged at the front ends of the sub-module bases, the front ends of the sub-module bases are clamped and fixed with the positioning pins through the concave portions, the rear ends of the sub-module bases are fixed on the sliding installation guide rails through fasteners, and the sub-module is installed simply and conveniently.
Drawings
FIG. 1 is a crimped valve section of an embodiment of a valve stack module for a DC power transmission converter valve of the present invention;
FIG. 2 is a schematic diagram of the internal structure of sub-modules of an embodiment of a valve train module for a DC power transmission converter valve according to the present invention;
FIG. 3 is a schematic illustration of the left side panel, right side panel, top panel and front panel mounting of an embodiment of the valve train module for a DC power transmission converter valve of the present invention;
FIG. 4 is a block diagram of sub-modules of an embodiment of a valve train module for a DC power transmission converter valve according to the present invention;
fig. 5 is a schematic diagram of a valve group base structure of a specific embodiment of a valve group module for a dc transmission converter valve according to the present invention;
FIG. 6 is a schematic block diagram of an embodiment of a valve train module for a DC power transmission converter valve according to the present invention;
FIG. 7 is an enlarged view taken at A in FIG. 6;
description of reference numerals: 1-submodule; 11-a crimped valve section; 111-mounting end plates; 112-insulating tie rod; 113-IGBT; 114-a thyristor; 115-a water-cooled heat sink; 116-a heat sink laminated busbar; 12-a capacitive component; 121-capacitance; 122-a capacitor laminated busbar; 123-test connection; 13-external connection terminal; 14-a water pipe; 151-left side plate; 152-right side plate; 153-top plate; 154-a front panel; 16-a module control unit; 2-a valve block base; 21-a metal beam; 22-insulating beams; 23-a connecting plate; 24-a guide rail; 25-cylindrical pin; 3-connecting the busbar.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The valve bank module for the direct-current transmission converter valve comprises a valve bank base 2 and five sequentially serially-connected sub-modules 1 which are sequentially arranged along the left-right direction, each sub-module 1 is respectively provided with a sub-module base which extends along the front-back direction, a capacitor part 12 and a power unit which is positioned in front of the capacitor part 12 are arranged on each sub-module base, and each power unit comprises a crimping type valve section 11. Five sub-modules connected in series in sequence are arranged on the valve group base in the embodiment, and in other embodiments, different numbers of sub-modules can be arranged according to different requirements.
As shown in fig. 1, the press-fit valve section 11 includes a middle frame extending in the front-back direction and two mounting end plates 111 fixed at the left and right ends of the middle frame, the two mounting end plates 111 of the press-fit valve section 11 are connected and fixed by four insulating pull rods 112, and the four insulating pull rods 112 form the middle frame. The IGBT113, the thyristor 114, and the plurality of water-cooled heat sinks 115 are sandwiched between the two mounting end plates 111, six water-cooled heat sinks 115 are provided in the pressure-connected valve section 11 in the present embodiment, and four IGBTs 113 and one thyristor 114 are interposed between the six water-cooled heat sinks 115 at intervals, so that it can be ensured that each IGBT113 and thyristor 114 can sufficiently dissipate heat through the water-cooled heat sinks 115. And clamping devices which are used for being matched with each other to clamp and position the IGBT113, the thyristor 114 and the water-cooled radiator 115 in the left-right direction are arranged on the two mounting end plates 111, one clamping device is a disc spring jacking device for applying acting force by an external loading mechanism, and the other clamping device is a rigid jacking device. In the present embodiment, the IGBT113 and the thyristor are both power devices constituting a pressure-bonded valve section. In other embodiments, only the IGBT113 may be provided in the valve section.
In other embodiments, the number of the IGBTs 113, the thyristors, and the water-cooled radiators may also be increased or decreased as needed, for example, 8 IGBTs 113 and one thyristor are provided, at this time, ten radiators should be provided, and of course, the number of the IGBTs 113 and the thyristors forming two sets of full-bridge modules may also be installed. In other embodiments, the capacitor laminated busbar may not be provided, but the busbar may be directly electrically connected to the heat sink. Of course, the crimping structure of the crimping valve section can also be referred to the crimping structure of the crimping valve section described in CN 105006472B.
As shown in fig. 2, each sub-module 1 mainly includes a capacitor 12 and a power unit located in front of the capacitor 12, the capacitor 12 in this embodiment is formed by connecting two capacitors 121 in parallel, the two capacitors 121 are arranged side by side, the power unit is mainly formed by a crimping valve section 11, the crimping valve section 11 is installed at a front position of the sub-module base along a front-back direction, the crimping valve section 11 is further connected with an external terminal 13, and the external terminal 13 extends forward from the crimping valve section 11 so as to connect a plurality of sub-modules in series at a front end when forming the valve group module. In order to facilitate the connection of the water-cooled radiators 115 in the press-fit valve section 11, in this embodiment, the water-cooled channels of the water-cooled radiators 115 in each sub-module 1 are connected end to end, and then the main water inlet and the main water outlet are extended to the front end of the sub-module 1 through the water pipe 14, so that water supply is facilitated when the valve group module is formed.
As shown in fig. 2, in order to facilitate electrically connecting the capacitor component 12 with the power unit, in this embodiment, the capacitor 121 is connected with a capacitor laminated busbar 122, the water-cooled heat sink 115 of the pressure-welding type valve section 11 is connected with a heat sink laminated busbar 116, the capacitor laminated busbar 122 and the heat sink laminated busbar 116 are provided with a connecting plate 23 at a middle position between the capacitor component 12 and the power unit, the connecting plate 23 is provided with a connecting hole, the positive electrode of the connecting plate 23 of the two laminated busbars is opposite to the positive electrode, and the negative electrode of the connecting plate 23 of the two laminated busbars is opposite to the negative electrode, when connection is needed, the connecting terminals are directly used to electrically connect the corresponding connecting holes on the connecting plate 23 of the two laminated busbars, which is simple and convenient. The sub-module 1 in this embodiment comprises, in addition to the capacitive component 12 and the power component, a module control unit 16, the module control unit 16 being located on the front side of the power unit. In other embodiments, the capacitor laminated busbar 122 and the heat sink laminated busbar 116 may be electrically connected through a connecting copper bar.
In order to prevent danger from occurring when the capacitor 121 is monitored, in the embodiment, a semicircular wire outlet groove is formed in the top of the capacitor laminated busbar 122, the wire outlet groove forms a test connection part 123, a test handle can be directly clamped in a field installation test, and the danger caused by the live detection of the capacitor 121 is avoided. In other embodiments, no outlet slots may be provided.
As shown in fig. 3, the sub-module 1 is provided with a left side plate 151, a right side plate 152, a top plate 153 and a front plate 154 in the left-right direction to protect the parts except the capacitor 121, the left side plate 151 and the right side plate 152 are clamped on the valve group base 2, the top plate 153 is slidably clamped, the front plate 154 is mounted on the left and right side plates 152 by bolts, and the mounting of the sub-module 1 housing is completed. In other embodiments, the left side plate, the right side plate and the top plate can be welded together and fixed on the sub-module base through bolts, and the front side plate is fixed on the left side plate and the right side plate through bolts.
As shown in fig. 4, 5 and 6, the sub-module 1 in this embodiment is mounted on a valve block base 2, the valve block base 2 includes metal beams 21 extending in the front-rear direction, a plurality of insulating beams 22 perpendicular to the metal beams 21 are disposed between the two metal beams 21, the metal beams 21 and the insulating beams 22 are connected and fixed by an L-shaped connecting plate 23, and the metal beams 21 and the insulating beams 22 constitute a base frame. Be provided with the guide rail 24 that extends along the fore-and-aft direction on the base frame, the guide rail 24 cross-section is the L type, and two guide rails 24 are a pair of, and relative setting, submodule piece 1 installs between two guide rails 24 that set up in pairs, is provided with the ball on the guide rail 24 and is convenient for submodule piece 1 and slides on valves base 2. The front end of guide rail 24 is provided with cylindric lock 25, is provided with big footpath section and path section on the cylindric lock 25, corresponds with cylindric lock 25, is provided with the notch on the submodule piece base, and cylindric lock 25 can be blocked in submodule piece base's notch, makes submodule piece base front end fixed, and submodule piece base rear end passes through locking screw to be fixed on valves base 2. Each submodule 1 in the valve group module is connected in series through a connecting bus bar 3, and a water outlet and a water inlet of the submodule 1 are respectively communicated with a water inlet pipe and a water outlet pipe at the front end of the valve group module. In other embodiments, the front end and the rear end of the sub-module can be fixed on the guide rail through bolts.
According to the invention, the laminated busbar is adopted to connect the valve section and the capacitor, so that the installation steps are simplified, the installation efficiency is improved, the multi-potential electrical clearance requirement in the sub-module can be met when the number of IGBTs in the valve section is large, the installation control is saved, and the structure is more compact. The valve group module is provided with the valve group base, the guide rail is arranged on the valve group base, the sub-module is simply and conveniently installed through the guide rail, the water channel and the circuit are installed in front of the sub-module, and replacement and disassembly are more convenient.
In the embodiment of the submodule for the direct-current transmission converter valve, the specific structure of the submodule for the direct-current transmission converter valve in the embodiment is the same as that of the submodule in the valve bank module for the direct-current transmission converter valve, and the details are not repeated.
Claims (8)
1. Direct current transmission converter submodule piece for valve, including the submodule piece base that extends along the fore-and-aft direction, be equipped with the electric capacity part on the submodule piece base and be located the power unit in electric capacity part the place ahead, power unit include with electric capacity part conductive connection's crimping formula valve section, crimping formula valve section is including the power device and the water-cooling radiator that the pressure equipment is in the same place, arbitrary power device both sides respectively conductive connection have water-cooling radiator, its characterized in that: the utility model discloses a pressure welding valve assembly, including the crimping formula valve section, the crimping formula valve section is connected with the crimping formula valve section left and right sides, the crimping formula valve section left and right sides extends to the front, so that can establish ties a plurality of submodule pieces at the front end when constituting the valves module, the female top of arranging of capacitance is provided with test connection portion.
2. The submodule for a direct current transmission converter valve according to claim 1, wherein: and the positive electrode and the negative electrode of the radiator laminated busbar are directly and correspondingly connected with the positive electrode and the negative electrode of the capacitor laminated busbar.
3. A submodule for a dc transmission converter valve according to claim 1 or 2, characterised in that: the front end of each submodule is provided with a water inlet pipe and a water outlet pipe which are connected with the water-cooled radiator, and the water inlet pipe and the water outlet pipe are communicated with a water inlet and a water outlet on the water-cooled radiator.
4. Direct current transmission is valve group module for converter valve, including valves group base and two at least series connection's submodule pieces in proper order of arranging in proper order along left right direction, each submodule piece has the submodule piece base that extends along the fore-and-aft direction respectively, is equipped with the power unit that electric capacity part and lie in electric capacity part the place ahead on the submodule piece base, power unit include with electric capacity part conductive connection's crimping formula valve section, crimping formula valve section includes power device and the water-cooling radiator that the pressure equipment is in the same place, arbitrary power device both sides are conductive connection respectively have water-cooling radiator, its characterized in that: the utility model discloses a pressure welding valve assembly, including the crimping formula valve section, the crimping formula valve section is connected with the capacitor, the capacitor is equipped with the electric capacity stromatolite of being connected with the capacitor electrically conductive female arranging of being connected towards power unit's the place ahead, is equipped with the radiator stromatolite that is connected with corresponding water-cooled radiator electrically conductive female arranging on the crimping formula valve section, and the radiator stromatolite is female to be located the outside on the left and right sides of crimping formula valve section, the radiator stromatolite female arranging with the electric capacity stromatolite female arranging corresponds electrically conductive connection and is connected in order to realize crimping formula valve section and capacitor, still is connected with external terminal on the crimping formula valve section, and external terminal is extended forward by the crimping formula valve section left and right sides to can establish ties a plurality of submodule pieces at the front end when constituting the valves module.
5. The valve train module for a direct current transmission converter valve according to claim 4, wherein: and the positive electrode and the negative electrode of the radiator laminated busbar are directly and correspondingly connected with the positive electrode and the negative electrode of the capacitor laminated busbar.
6. The valve train module for a direct current transmission converter valve according to claim 4 or 5, wherein: and the top of the capacitor laminated busbar is provided with a test connecting part.
7. The valve train module for a direct current transmission converter valve according to claim 4 or 5, wherein: the front end of each submodule is provided with a water inlet pipe and a water outlet pipe which are connected with the water-cooled radiator, and the water inlet pipe and the water outlet pipe are communicated with a water inlet and a water outlet on the water-cooled radiator.
8. The valve train module for a direct current transmission converter valve according to claim 4 or 5, wherein: the valve bank base is provided with at least two pairs of sliding installation guide rails extending in the front-back direction, the front ends of the sliding installation guide rails are provided with positioning pins, the front end of the sub-module base is provided with a concave portion, the front end of the sub-module base is clamped and fixed with the positioning pins through the concave portions, and the rear ends of the sub-module base are fixed on the sliding installation guide rails through fasteners.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910092779.7A CN111509994B (en) | 2019-01-30 | 2019-01-30 | Submodule for direct-current transmission converter valve and valve set module for direct-current transmission converter valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910092779.7A CN111509994B (en) | 2019-01-30 | 2019-01-30 | Submodule for direct-current transmission converter valve and valve set module for direct-current transmission converter valve |
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| CN111509994A CN111509994A (en) | 2020-08-07 |
| CN111509994B true CN111509994B (en) | 2021-12-24 |
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| CN111327207A (en) * | 2018-12-13 | 2020-06-23 | 许继集团有限公司 | IGBT power unit and submodule with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103354232B (en) * | 2013-06-17 | 2015-08-26 | 许继电气股份有限公司 | A kind of submodule in parallel for flexible DC power transmission |
| CN105355611A (en) * | 2015-09-29 | 2016-02-24 | 特变电工新疆新能源股份有限公司 | High-capacity water-cooling power unit |
| CN107359801A (en) * | 2017-08-30 | 2017-11-17 | 特变电工新疆新能源股份有限公司 | A kind of compression joint type IEGT flexible DC power transmission power models |
| CN107846210B (en) * | 2017-10-23 | 2021-12-24 | 许继电气股份有限公司 | Direct current is branch assembly, direct current circuit breaker for circuit breaker |
| CN108428683B (en) * | 2018-04-17 | 2024-03-29 | 全球能源互联网研究院有限公司 | Thyristor assembly, thyristor press-fitting structure and direct-current transmission converter valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111327207A (en) * | 2018-12-13 | 2020-06-23 | 许继集团有限公司 | IGBT power unit and submodule with same |
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