CN207475186U - Quick mechanical formula high voltage DC breaker - Google Patents
Quick mechanical formula high voltage DC breaker Download PDFInfo
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- CN207475186U CN207475186U CN201721646218.XU CN201721646218U CN207475186U CN 207475186 U CN207475186 U CN 207475186U CN 201721646218 U CN201721646218 U CN 201721646218U CN 207475186 U CN207475186 U CN 207475186U
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- support device
- high voltage
- breaker
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Abstract
The utility model is related to a kind of Quick mechanical formula high voltage DC breaker, including high pressure end equipment, low pressure end equipment, hollow coupling transformer, ancillary equipment, the first support device and the second support device；High pressure end equipment includes the commutation capacitor being connected in parallel and Fast mechanical switch device；Low pressure end equipment includes the power electronics trigger switch that recharged capacitance is connected in parallel；First support device and the second support device are respectively equipped with platform；Second support device includes the first platform and the second platform；First platform is set on the top of the second platform；Fast mechanical switch device is set on the platform of the first support device；Commutation capacitor is set on the first platform of the second support device, and recharged capacitance is set on the second platform of the second support device；Ancillary equipment is connected in parallel to low pressure end equipment, and low pressure end equipment is connect by hollow coupling transformer with high pressure end equipment.The Quick mechanical formula high voltage DC breaker improves stability and the safety of Quick mechanical formula high voltage DC breaker.
Description
Technical field
The utility model is related to technical field of direct current power transmission, more particularly to a kind of open circuit of Quick mechanical formula high voltage direct current
Device.
Background technology
For fast-developing HVDC Transmission Technology, to maintain DC grid safe and stable operation and protecting pass in power grid
Button apparatus needs quickly to be limited using dc circuit breaker and cut off the fault current in straight-flow system.For example, Quick mechanical formula
High voltage DC breaker is by the integrated equipment of multiple building blocks, and this dc circuit breaker generally comprises energy-absorbing branch, current-carrying
Branch and change of current branch.
Since the device category that each branch of Quick mechanical formula high voltage DC breaker is related to is various, with voltage class
Raising, the volume of the equipment in each branch also can further increase.The Quick mechanical formula high voltage direct current that traditional technology provides
Each branch equipment for landing arrangement is generally attached by breaker, but since the equipment between different voltages grade can be mutual
It influences, this technology can cause the stability of Quick mechanical formula high voltage DC breaker to decline with the raising of voltage class.
Utility model content
Based on this, it is necessary to which the Quick mechanical formula high voltage DC breaker stability provided for traditional technology low is asked
Topic, provides a kind of Quick mechanical formula high voltage DC breaker.
A kind of Quick mechanical formula high voltage DC breaker, including：
High pressure end equipment, low pressure end equipment, hollow coupling transformer, ancillary equipment, the first support device and the second support
Device；
The high pressure end equipment includes the commutation capacitor being connected in parallel and Fast mechanical switch device；The low pressure end equipment
The power electronics trigger switch being connected in parallel including recharged capacitance；
First support device and the second support device are respectively equipped with platform；
Second support device includes the first platform and the second platform；Wherein, first platform is set on the second platform
Top；
The Fast mechanical switch device is set on the platform of first support device；
The commutation capacitor is set on the first platform of second support device, and the recharged capacitance is set on second
On second platform of support arrangement；
The ancillary equipment is connected in parallel to low pressure end equipment, and the low pressure end equipment passes through hollow coupling transformer and high-pressure side
Equipment connects.
Above-mentioned Quick mechanical formula high voltage DC breaker is set using the high pressure end equipment and low-pressure end that are located at different platform
Fast mechanical switch device that is standby and being located at identical platform so that the equipment between different voltages grade is not influenced each other,
Ensure Quick mechanical formula high voltage DC breaker can steady operation, overcome the problem of traditional technology stability is low, improve
The stability of Quick mechanical formula high voltage DC breaker and safety.
In one embodiment, the hollow coupling transformer is the hollow coupling transformer of landing arrangement；The electric power
Power electronics trigger switch of the switch for landing arrangement is electronically activated；
The ancillary equipment includes isolating transformer, transformer, earthing switch and the voltage transformer of landing arrangement, also wraps
Include the mechanical switch driving power cabinet being located on the platform of the first support device；
The mechanical switch driving power cabinet is connect by isolating transformer with transformer, then the ground connection by being connected in parallel
Switch and voltage transformer are connected in parallel to the recharged capacitance.
In one embodiment, the hollow coupling transformer includes primary and secondary side；
The primary and secondary side of the hollow coupling transformer is respectively equipped with wire connection terminal；Wherein, the hollow coupling transformation
The wire connection terminal of the primary side of device and the wire connection terminal cross arrangement of secondary are set.
In one embodiment, above-mentioned Quick mechanical formula high voltage DC breaker, further includes and is connected in parallel to Fast mechanical switch
The arrester MOV modules of device；
The arrester MOV modules are fixedly connected with the ground by steel bracket and insulator.
In one embodiment, the first support device layering is equipped with multiple platforms；The Fast mechanical switch device
Including the multiple Fast mechanical switch modules being sequentially connected in series；
The Fast mechanical switch module is located in pairs on each platform of first support device.
In one embodiment, the Fast mechanical switch module includes the mechanical breaker being connected in parallel and pressure lets out energy member
Part.
In one embodiment, it is connected simultaneously by bushing wiring between each platform of first support device
Pass through steel bracket and insulator support connection.
In one embodiment, each platform of first support device is platform corresponding with different voltages grade.
In one embodiment, the first platform of second support device is supported in the upper of the second platform by insulator
Side.
In one embodiment, the platform of first support device and the second support device is put down by what steelframe was built
Platform.
Description of the drawings
Fig. 1 is the side view of the Quick mechanical formula high voltage DC breaker of one embodiment；
Fig. 2 is the vertical view of the Quick mechanical formula high voltage DC breaker of one embodiment；
Fig. 3 is the wiring schematic diagram of the Quick mechanical formula high voltage DC breaker of one embodiment.
Specific embodiment
Below in conjunction with the drawings and the specific embodiments, the Quick mechanical formula high voltage DC breaker of the utility model is carried out
Detailed description.
In one embodiment, as shown in FIG. 1, FIG. 1 is the Quick mechanical formula high voltage DC breakers of one embodiment
Side view, the Quick mechanical formula high voltage DC breaker can include：
High pressure end equipment, low pressure end equipment, hollow coupling transformer 200, ancillary equipment, the first support device 310 and
Two support devices 320；
The high pressure end equipment includes the commutation capacitor 110 being connected in parallel and Fast mechanical switch device 120；The low pressure
End equipment includes the power electronics trigger switch 140 that recharged capacitance 130 is connected in parallel；
First support device, 310 and second support device 320 is respectively equipped with platform；
Second support device 320 includes the first platform 321 and the second platform 322；Wherein, first platform 321
Set on the top of the second platform 322；
The Fast mechanical switch device 120 is set on the platform of first support device 310；
The commutation capacitor 110 is set on the first platform 321 of second support device 320, the recharged capacitance
130 are set on the second platform 322 of the second support device 320；
The ancillary equipment is connected in parallel to low pressure end equipment, and the low pressure end equipment passes through hollow coupling transformer 200 and height
Pressure side equipment connects.
In the present embodiment, low pressure end equipment generally includes recharged capacitance 130 and power electronics trigger switch 140, in advance
Charging capacitor 130 is connected in parallel with power electronics trigger switch 140；High pressure end equipment generally includes commutation capacitor 110 and quick
Mechanical switching device 120, commutation capacitor 110 are connected in parallel with Fast mechanical switch device 120.
Hollow coupling transformer 200 generally refers to have energy or the device of signal transmission capabilities, in the present embodiment, low
Pressure side equipment can be of coupled connections by hollow coupling transformer 200 and high pressure end equipment.
Ancillary equipment is typically the equipment for providing electric energy for Quick mechanical formula high voltage DC breaker, and the ancillary equipment is in parallel
It is powered to low pressure end equipment.
Support device generally refers to the device with certain load-bearing capacity, which can have different support knots
Structure, as long as the function of support can be realized, typical support device can be including steel bracket etc..It can be equipped in support device
Multiple platforms, this kind of platform typically refer to the platform with load-bearing capacity, and platform is generally arranged on support dress with surface water level land
Among putting, platform mentioned here can also be the box body for bearing equipment.In the present embodiment, Fast mechanical switch can be filled
It puts 120, commutation capacitor 110 and recharged capacitance 130 is located on the bearing platform of each support device.
The present embodiment is mainly to be layered commutation capacitor 110 and recharged capacitance 130 to be located at the flat of the second support device 320
On platform, specifically, commutation capacitor 110 is located on the first platform 321 of the second support device 320, wherein, by taking Fig. 1 as an example, the change of current
Capacitance 110 can include the first commutation capacitor component 111 and the second commutation capacitor component 112；Recharged capacitance 130 is set on second
On second platform 322 of support device 320, wherein, the first platform 321 is set on the second platform 322 and opens Quick mechanical
Device 120 is closed to be located on the platform of the first support device 310.
Above-described embodiment provide technical solution using layering setting commutation capacitor 110 and recharged capacitance 130 and
The Fast mechanical switch device 120 set using the unified platform, when Quick mechanical formula high voltage DC breaker works, the open circuit
The equipment between different voltages grade in device will not be influenced each other, so as to ensure that the open circuit of Quick mechanical formula high voltage direct current
Device with voltage class increases when can also continue steady operation, overcome the problem of traditional technology stability is low, improve fast
The stability of speed mechanical high voltage DC breaker and safety.
It is set it is understood that technical solution provided in this embodiment carries out high pressure end equipment and low pressure end equipment layering
It puts, makes full use of the space of height, save the space for placing the breaker, while to Fast mechanical switch device 120
Carry out unified platform setting so that compacter between each equipment of the Quick mechanical formula high voltage DC breaker and satisfaction one
Fixed electrical strength can improve stability and the safety of the Quick mechanical formula high voltage DC breaker.
In order to further improve the stability of the breaker, in one embodiment, with reference to figure 2, Fig. 2 is one embodiment
Quick mechanical formula high voltage DC breaker vertical view, the hollow coupling transformer 200 be landing arrangement hollow coupling
Transformer 200；The power electronics trigger switch 140 is the power electronics trigger switch 140 of landing arrangement；
Isolating transformer 160, transformer 170, earthing switch 180 and the voltage that the ancillary equipment includes landing arrangement are mutual
Sensor 190 further includes the mechanical switch driving power cabinet 150 being located on the platform of the first support device 310；
The mechanical switch driving power cabinet 150 is connect by isolating transformer 160 with transformer, then by being connected in parallel
Earthing switch 180 and voltage transformer 190 be connected in parallel to the recharged capacitance 130.
In the present embodiment, ancillary equipment can include isolating transformer 160, transformer 170, earthing switch 180 and electricity
Press mutual inductor 190 and mechanical switch driving power cabinet 150.
Specifically, with reference to figure 3, Fig. 3 is the wiring schematic diagram of the Quick mechanical formula high voltage DC breaker of one embodiment,
Mechanical switch driving power cabinet 150 is connect by isolating transformer 160 with transformer, then the earthing switch by being connected in parallel
180 and voltage transformer 190 be connected in parallel to the recharged capacitance 130, transformer 170 can be internally integrated rectifier equipment
Transformer 170.The ancillary equipment is used to power for the breaker, stability and safety during breaker work can be improved
Property.
Using the hollow coupling transformer 200 of landing arrangement, power electronics trigger switch 140, isolating transformer 160, become
Depressor, earthing switch 180, voltage transformer 190 and the mechanical switch driving electricity being located on the platform of the first support device 310
Source cabinet 150 be Quick mechanical formula high voltage DC breaker power supply, can further improve the breaker work when stability and
Safety.
In one embodiment, hollow coupling transformer 200 includes primary and secondary side；
The primary and secondary side of the hollow coupling transformer 200 is respectively equipped with wire connection terminal；Wherein, the hollow coupling becomes
The wire connection terminal of the primary side of depressor 200 and the wire connection terminal cross arrangement of secondary are set.
In the present embodiment, the primary side of hollow coupling transformer 200 generally refers to the primary circuit of the transformer, secondary one
As refer to the secondary loop of the transformer, the primary side of hollow coupling transformer 200 is usually connect with mains side, secondary then usually with
Load-side connects.
By taking Quick mechanical formula high voltage DC breaker provided by the utility model as an example, low pressure end equipment can be by hollow
Electric energy is coupled to high pressure end equipment by the primary side of coupler by the secondary of hollow coupler.
The primary and secondary side of hollow coupling transformer 200 can be respectively equipped with wire connection terminal；The hollow coupling transformer
The wire connection terminal of 200 primary side and the wire connection terminal cross arrangement of secondary are set.
The technical solution provided using above-described embodiment, passes through the wire connection terminal of the primary side to hollow coupling transformer 200
Cross arrangement setting is carried out with the wire connection terminal of secondary, the wiring efficiency of hollow coupling transformer 200 is improved, further improves
The stability of the Quick mechanical formula high voltage DC breaker and safety.
In one embodiment, Quick mechanical formula high voltage DC breaker can also include being connected in parallel to Fast mechanical switch dress
Put 120 arrester MOV modules 210；
The arrester MOV modules 210 are fixedly connected with the ground by steel bracket and insulator.
In the present embodiment, arrester MOV modules 210 are usually as a kind of suction of Quick mechanical formula high voltage DC breaker
Energy branch equipment uses, and arrester MOV modules 210 are generally used for protection Quick mechanical formula high voltage DC breaker, by thunder
Hit prevents equipment to be damaged when fortuitous events.Specifically, arrester MOV modules 210 can be with Fast mechanical switch device
120 are connected in parallel, and are also fixedly connected with the ground by steel bracket and insulator.
The technical solution provided using above-described embodiment can further improve Quick mechanical formula high voltage DC breaker
Stability and safety.
In one embodiment, the layering of the first support device 310 is equipped with multiple platforms；The Fast mechanical switch dress
It puts 120 and includes the multiple Fast mechanical switch modules being sequentially connected in series；
The Fast mechanical switch module is located in pairs on each platform of first support device 310.
Specifically, Fast mechanical switch device 120 can include multiple Fast mechanical switch modules, by taking Fig. 1 as an example, soon
Fast mechanical switching device 120 can include the first Fast mechanical switch module 121 and the second Fast mechanical switch module 122, respectively
By being connected in series between a Fast mechanical switch module.
First support device 310 can be layered the multiple platforms of setting, each Quick mechanical of Fast mechanical switch device 120
Switch module can be separately positioned on the platform of different levels.
The present embodiment is mainly each platform that Fast mechanical switch module is located to first support device 310 in pairs
On, on the one hand which improves the stability of Quick mechanical formula high voltage DC breaker, on the other hand improve to fast
The efficiency of the management of the Fast mechanical switch module of speed mechanical high voltage DC breaker.
In one embodiment, it is also provided with opening with two pairs of Quick mechanicals on each platform of the first support device 310
Close the corresponding Fast mechanical switch driving power cabinet 150 of module.Specifically, with reference to figure 1, by taking Fig. 1 as an example, Fast mechanical switch
The first Fast mechanical switch driving power cabinet 151 and first that driving power cabinet 150 can include being arranged on different platform is quick
Mechanical switch driving power cabinet 152, it is corresponding with two pairs of Fast mechanical switch modules of different levels respectively.
In one embodiment, each platform of the first support device 310 can also further be correspondingly arranged an isolation
Transformer 160.With reference to figure 2, by taking Fig. 2 as an example, isolating transformer 160 can include putting down with 310 different levels of the first support device
Corresponding first isolating transformer, 161 and second isolating transformer 162 of platform.The isolating transformer 160 is generally used for pairs of
Fast mechanical switch module for power supply.
In one embodiment, the Fast mechanical switch module includes the mechanical breaker being connected in parallel and pressure lets out energy member
Part.
In the present embodiment, each Fast mechanical switch module further comprises mechanical breaker and pressure lets out energy element, ginseng
Examine Fig. 3, the first mechanical breaker 11 with first pressure let out can element in parallel connect, then be connected serially to each Fast mechanical switch module together
Mechanical ports and let out can element for pressure；Wherein, the first pressure lets out first capacitance-resistance device 13 of the energy element generally by being connected in parallel
It is formed with first resistor 12.With reference to figure 1, the first Fast mechanical switch module 121 includes the first mechanical breaker 11, first resistor 12
With the first capacitance-resistance device 13, the second Fast mechanical switch module 122 includes the second mechanical breaker 21, and second resistance 22 and second hinders
Capacitance device 23.
Further, the isolating transformer 160 being arranged on each platform of the first support device 310 can be used for into
To mechanical breaker operating mechanism power.
In one embodiment, connected between each platform of first support device 310 by bushing wiring
Connect and pass through steel bracket and insulator support connection.Technical solution provided in this embodiment is using steel bracket and insulator to each
Platform is supported connection, is that the equipment being arranged on each platform carries out wiring connection using bushing, can be into one
Step improves the stability of Quick mechanical formula high voltage DC breaker.
In one embodiment, each platform of first support device 310 is corresponding with different voltages grade flat
Platform.
In general, the equipment of different brackets voltage needs to be arranged on the platform of different levels, and the present embodiment is mainly
By first support device 310 of the layering equipped with platform corresponding with different voltages grade, the equipment for different voltages grade carries
For the platform of place apparatus, when being increased with the voltage class of equipment, the platform of support device can add up upwards, so that
The equipment of each voltage class of Quick mechanical formula high voltage DC breaker it is fast will not to be further improved this by reciprocal influence
The Stability and adaptability of speed mechanical high voltage DC breaker.
In one embodiment, it is flat by insulator to be supported in second for the first platform 321 of second support device 320
The top of platform 322.The present embodiment is mainly the top that the first platform 321 is supported on to the second platform 322 by insulator, generally
For the top that the first platform 321 is supported on the second platform 322 by support insulator may be used.
It is understood that since the platform structure of the layering setting of support device simplifies point of complicated current potential equipment
Cloth, so can save the dosage of support insulator using technical solution provided in this embodiment and may be used same exhausted
Edge improves the setting efficiency of insulator.
In one embodiment, the platform of 310 and second support device 320 of the first support device is built by steelframe
Platform.Using the platform that the higher steelframe of stability is built as the flat of the first support device 310 and the second support device 320
Platform so that technical solution provided in this embodiment can further improve the stabilization of the Quick mechanical formula high voltage DC breaker
Property.
In one embodiment, the distance between gold utensil of different potentials of speed mechanical high voltage DC breaker is minimum
The recommendation of air clearance, the recommendation are usually the recommendation being calculated according to g parametric methods.Wherein, gold utensil typically refers to
The metal connecting device of the inlet-outlet line of each equipment.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.Embodiment described above only expresses the several of the utility model
Embodiment, description is more specific and detailed, but therefore can not be interpreted as the limitation to utility model patent range.It should
It, without departing from the concept of the premise utility, can be with when, it is noted that for those of ordinary skill in the art
Several modifications and improvements are made, these belong to the scope of protection of the utility model.Therefore, the protection model of the utility model patent
Enclosing should be determined by the appended claims.
Claims (10)
1. a kind of Quick mechanical formula high voltage DC breaker, which is characterized in that including：High pressure end equipment, low pressure end equipment, hollow
Coupling transformer (200), ancillary equipment, the first support device (310) and the second support device (320)；Wherein, the high-pressure side
Equipment includes the commutation capacitor (110) being connected in parallel and Fast mechanical switch device (120)；The low pressure end equipment includes preliminary filling
The power electronics trigger switch (140) that capacitance (130) is connected in parallel；
First support device (310) and the second support device (320) are respectively equipped with platform；Second support device
(320) including the first platform (321) and the second platform (322)；Wherein, first platform (321) is set on the second platform (322)
Top；
The Fast mechanical switch device (120) is on the platform of first support device (310)；The commutation capacitor
(110) on the first platform (321) of second support device (320), the recharged capacitance (130) is set on second
On the second platform (322) of support arrangement (320)；
The ancillary equipment is connected in parallel to low pressure end equipment, and the low pressure end equipment passes through hollow coupling transformer (200) and high pressure
End equipment connects.
2. Quick mechanical formula high voltage DC breaker according to claim 1, which is characterized in that the hollow couples transformation
Device (200) is the hollow coupling transformer (200) of landing arrangement；The power electronics trigger switch (140) is landing arrangement
Power electronics trigger switch (140)；
The ancillary equipment includes isolating transformer (160), transformer (170), earthing switch (180) and the voltage of landing arrangement
Mutual inductor (190) further includes the mechanical switch driving power cabinet (150) being located on the platform of the first support device (310)；
The mechanical switch driving power cabinet (150) is connect, then with transformer (170) by simultaneously by isolating transformer (160)
The earthing switch (180) and voltage transformer (190) for joining connection are connected in parallel to the recharged capacitance (130).
3. Quick mechanical formula high voltage DC breaker according to claim 1, which is characterized in that the hollow couples transformation
Device (200) is including primary and secondary side；
The primary and secondary side of the hollow coupling transformer (200) is respectively equipped with wire connection terminal；Wherein, the hollow coupling transformation
The wire connection terminal of the primary side of device (200) and the wire connection terminal cross arrangement of secondary are set.
4. Quick mechanical formula high voltage DC breaker according to claim 1, which is characterized in that further include and be connected in parallel to quickly
The arrester MOV modules (210) of mechanical switching device (120)；
The arrester MOV modules (210) are fixedly connected with the ground by steel bracket and insulator.
5. Quick mechanical formula high voltage DC breaker according to claim 1, which is characterized in that first support device
(310) layering is equipped with multiple platforms；The Fast mechanical switch device (120) includes multiple Fast mechanical switch for being sequentially connected in series
Module；
The Fast mechanical switch module is located in pairs on each platform of first support device (310).
6. Quick mechanical formula high voltage DC breaker according to claim 5, which is characterized in that the Fast mechanical switch
Module includes the mechanical breaker being connected in parallel and pressure lets out energy element.
7. Quick mechanical formula high voltage DC breaker according to claim 5, which is characterized in that first support device
(310) connected between each platform by bushing wiring and pass through steel bracket and insulator support connection.
8. the layout structure of Quick mechanical formula high voltage DC breaker according to claim 5, which is characterized in that described
Each platform of one support device (310) is platform corresponding with different voltages grade.
9. Quick mechanical formula high voltage DC breaker according to claim 1, which is characterized in that second support device
(320) the first platform (321) is supported in the top of the second platform (322) by insulator.
10. Quick mechanical formula high voltage DC breaker according to claim 1, which is characterized in that the first support dress
The platform for putting (310) and the second support device (320) is the platform built by steelframe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721646218.XU CN207475186U (en) | 2017-11-30 | 2017-11-30 | Quick mechanical formula high voltage DC breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721646218.XU CN207475186U (en) | 2017-11-30 | 2017-11-30 | Quick mechanical formula high voltage DC breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207475186U true CN207475186U (en) | 2018-06-08 |
Family
ID=62256730
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721646218.XU Active CN207475186U (en) | 2017-11-30 | 2017-11-30 | Quick mechanical formula high voltage DC breaker |
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| CN (1) | CN207475186U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854823A (en) * | 2018-08-20 | 2020-02-28 | 平高集团有限公司 | High-voltage direct-current circuit breaker |
-
2017
- 2017-11-30 CN CN201721646218.XU patent/CN207475186U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854823A (en) * | 2018-08-20 | 2020-02-28 | 平高集团有限公司 | High-voltage direct-current circuit breaker |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210609 Address after: 510700 3rd, 4th and 5th floors of building J1 and 3rd floor of building J3, No.11 Kexiang Road, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee after: China Southern Power Grid Research Institute Co.,Ltd. Address before: 510663 3 building, 3, 4, 5 and J1 building, 11 building, No. 11, Ke Xiang Road, Luogang District Science City, Guangzhou, Guangdong. Patentee before: China Southern Power Grid Research Institute Co.,Ltd. Patentee before: CSG POWER GRID TECHNOLOGY RESEARCH CENTER |
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| TR01 | Transfer of patent right |