CN108039301B - A kind of conductive major loop structure for high voltage DC breaker - Google Patents
A kind of conductive major loop structure for high voltage DC breaker Download PDFInfo
- Publication number
- CN108039301B CN108039301B CN201810015649.9A CN201810015649A CN108039301B CN 108039301 B CN108039301 B CN 108039301B CN 201810015649 A CN201810015649 A CN 201810015649A CN 108039301 B CN108039301 B CN 108039301B
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- China
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- terminal plate
- vacuum interrupter
- breaker
- major loop
- pull rod
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/6606—Terminal arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
Abstract
The present invention relates to the technical fields of high tension apparatus, disclose a kind of conductive major loop structure for high voltage DC breaker, including closed insulating cylinder, vacuum interrupter is internally provided in insulating cylinder, the static contact of vacuum interrupter is connected by fingertip connection component with the top terminal plate of insulating cylinder, fingertip connection component is for ensureing being electrically connected between the static contact of vacuum interrupter and top terminal plate, the moving contact of vacuum interrupter is connected by being conductively connected component with the bottom terminal plate of insulating cylinder, multiple insulated supports are provided between fingertip connection component and conductive connection component, the moving contact of vacuum interrupter is also connected with the pull rod of operating mechanism, pull rod passes through bottom terminal plate and is connected with operating mechanism, the top terminal plate being connected with the input terminal of breaker, fingertip bindiny mechanism, vacuum interrupter, be conductively connected component and with The connected bottom terminal plate of the output end of breaker forms the conductive major loop of breaker.The present invention is simple and reliable, is convenient for application.
Description
Technical field
The present invention relates to the technical field of high tension apparatus more particularly to a kind of conductions for for high voltage DC breaker
Major loop structure.
Background technique
With the rise of direct current transmission power grid, high voltage DC breaker is to the carrying of direct current and cut-offs and seems especially heavy
It wants, while reliability of service life requirement is also quite high, usually requires that 30 years.It is through-flow just to play carrying in high voltage DC breaker
It is conductive major loop structure, wherein most crucial components are vacuum interrupters.However, when cut-offfing of high voltage DC breaker
Between in Millisecond, too fast divide-shut brake speed affects the service life of vacuum interrupter, and rugged environment further decreases vacuum and goes out
The service life of arc chamber.
Existing conduction major loop is mainly used for low speed AC breaker or indoor high-voltage dc circuit breaker, generally outdoors
The anti-corrosion function of environment is poor, or has certain anti-corrosion ability but can not apply disconnected in the higher high voltage direct current of divide-shut brake speed
On the device of road.Even if some conductive major loops have anti-corrosion ability, but conductive major loop and operating mechanism are integrally arranged on one
In gas chamber, be not easy to module reprocesses maintenance.
For example, the conducting loop structure that application number CN 201146150Y is proposed, top is easy to intake into dust, not have
Anti-corrosion function can not influence the service life of bellows in vacuum interrupter using environment outdoors.
For example, the major loop structure that 204230141 U of application number CN is proposed, is applied in the higher high pressure of divide-shut brake speed
When on dc circuit breaker, conductive clip is easy to become the sliding loosened from original relatively quiet contact on vacuum interrupter output end
Contact, causes contact resistance to become larger, and temperature rise aggravation influences the service life；When using environment outdoors, vacuum interrupter and operating mechanism
Same be in a dry gas chamber is needed just to have anti-corrosion ability, be not easy to module reprocesses maintenance.
For example, the encapsulation type major loop that 203826280 U of application number CN is proposed, between insulated pull rod and vacuum interrupter
It is bolted locating narrow space, assembly difficulty, torque can not be too big, and otherwise torque can damage the ripple of vacuum interrupter
Pipe, is applied when on high voltage DC breaker, since torque is inadequate, opening velocity is higher to be easy to appear bolt looseness, affects
The reliability of divide-shut brake.
Therefore, how a kind of conductive major loop structure is provided, not only can apply to indoor, outdoor high-voltage dc circuit breaker, but also
Maintenance can be reprocessed convenient for module, become this field technical issues that need to address.
Summary of the invention
The present invention provides a kind of conductive major loop structure for high voltage DC breaker, and solving existing breaker cannot
It is applicable in indoor, outdoor environment simultaneously, and reprocesses the problems such as maintenance is inconvenient.
The present invention can be achieved through the following technical solutions:
A kind of conductive major loop structure for high voltage DC breaker, including closed insulating cylinder, in the insulating cylinder
Portion is provided with vacuum interrupter, and the static contact of the vacuum interrupter passes through the top terminal plate of fingertip connection component and insulating cylinder
It is connected, the fingertip connection component is described for ensureing being electrically connected between the static contact of vacuum interrupter and top terminal plate
The moving contact of vacuum interrupter by be conductively connected component be connected with the bottom terminal plate of insulating cylinder, the fingertip connection component with
Be conductively connected between component and be provided with multiple insulated supports, the moving contact of the vacuum interrupter also with the pull rod of operating mechanism
It is connected, the pull rod passes through bottom terminal plate and is connected with operating mechanism, and the top terminal plate that is connected with the input terminal of breaker touches
Refer to that bindiny mechanism, vacuum interrupter, the bottom terminal plate for being conductively connected component and being connected with the output end of breaker form open circuit
The conductive major loop of device.
Further, the fingertip connection component includes upper support seat, the bottom surface of the upper support seat and vacuum interrupter
Static contact is connected, and top surface is provided with lower cylinder straight up, and the bottom surface of the top terminal plate is provided with straight down
Upper cylinder, the upper cylinder and lower cylinder are nested by spring touch finger.
Further, the conductive connection component includes lower support base, the top surface of the lower support base and vacuum interrupter
Shell around moving contact is connected, and the surrounding of bottom surface is connected by multiple conductive supporting bars with bottom terminal plate, and center is provided with
Conducting block, the center of the conducting block are provided with through-hole, and watchband-shaped contactor is provided in the through-hole, and the vacuum interrupter moves
Contact passes through lower support base, the through-hole of conducting block is connected with pull rod, and is connected by watchband-shaped contactor with conducting block.
Further, the conductive connection component includes lower support base, the top surface of the lower support base and vacuum interrupter
Shell around moving contact is connected, and the surrounding of bottom surface is connected by multiple conductive supporting bars with bottom terminal plate, and the vacuum is gone out
The moving contact of arc chamber passes through lower support base, is connected by being flexible coupling with pull rod, one end setting being flexible coupling in moving contact and
The contact site of pull rod, the other end are connected with lower support base.
Further, the top terminal plate of the insulating cylinder, bottom terminal plate pass through the first sealing ring and insulation barrel is close
Envelope is connected, and the top terminal plate, bottom terminal plate and insulation barrel can releasably link together, the bottom terminal plate
It is provided with the second sealing ring between pull rod, is provided with charge valve on the top terminal plate.
Further, the insulated support uses rod-like structure, multiple insulated supports settings upper support seat, under
Between support base, the vacuum extinction device is arranged in the region that upper support seat, lower support base and multiple insulated supports surround.
A kind of repair method based on the conductive major loop structure described above for high voltage DC breaker removes top
Connection between portion's terminal plate, bottom terminal plate and insulation barrel, lays down top terminal plate and insulation barrel, carries out conduction and leads back
It reprocesses on road；The connection removing bottom terminal plate and insulating between barrel, pull rod, lays down pull rod, carries out reprocessing for operating mechanism.
The beneficial technical effect of the present invention is as follows:
1) by setting the first sealing ring and the second sealing ring, by top terminal plate, insulation barrel, bottom terminal plate and
The tie-rod sealing of operating mechanism links together, then is filled with dry gas by the charge valve of top terminal plate, and realization is led
The anti-corrosion effect of electric major loop, is adapted to outdoor environment, also can be applied to indoor.
2) it is embedded in the depth of lower shell by the adjustable upper shell of the spring touch finger of fingertip connection component, realizes same
Insulating cylinder can be coupled with various sizes of vacuum extinction device, make the breaker of different model, so that production cost is saved,
It increases economic efficiency；Meanwhile having sufficiently large space between the moving contact of vacuum interrupter and the pull rod of operating mechanism, convenient for applying
Add the fixation of enough torque progress between the two, in this way, be not easy to loosen under higher divide-shut brake speed,
It can be applied in high voltage DC breaker.
3) remove the connection between bottom terminal plate and insulating cylinder body, pull rod, unload pull rod, can make conductive major loop with
Operating mechanism is kept apart, and the module of the conductive major loop of guarantee and operating mechanism, which is reprocessed, to be independent of each other, easy to repair.
Detailed description of the invention
Fig. 1 is the axial sectional view of the embodiment of the present invention one；
Fig. 2 is the axial sectional view of the embodiment of the present invention two；
Wherein, 1- insulating cylinder, the top 101- terminal plate, the upper cylinder of 1011-, the bottom 102- terminal plate, 103- insulating cylinder
Wall, 2- vacuum interrupter, 201- static contact, 202- moving contact, 3- insulated support, 4- pull rod, the first sealing ring of 5-, 6- second
Sealing ring, 7- charge valve, 8- upper support seat, cylinder under 801-, 9- spring touch finger, support base under 10-, 11- conductive supporting bar,
12- conducting block, 13- watchband-shaped contactor, 14- are flexible coupling.
Specific embodiment
The embodiment of the invention will now be described in detail with reference to the accompanying drawings.
As illustrated in fig. 1 and 2, the present invention provides a kind of conductive major loop structures for high voltage DC breaker, including
Closed insulating cylinder 1 is internally provided with vacuum interrupter 2 in insulating cylinder 1, and the static contact 201 of the vacuum interrupter 2 passes through fingertip
Connection component is connected with the top terminal plate 101 of insulating cylinder 1, which is used to ensure the stationary contact of vacuum interrupter 2
Being electrically connected between first 201 and top terminal plate 101, the moving contact 202 of the vacuum interrupter 2 is by conductive connection component and absolutely
The bottom terminal plate 102 of edge cylinder 1 is connected, and is provided with multiple insulated supports between the fingertip connection component and conductive connection component
3, the moving contact 202 of the vacuum interrupter 3 is also connected with the pull rod of operating mechanism 4, the pull rod 4 pass through bottom terminal plate 102 with
Operating mechanism is connected, and the top terminal plate 101 that is connected with the input terminal of breaker, vacuum interrupter 2, is led at fingertip connection component
Electrical connection module and the bottom terminal plate 102 being connected with the output end of breaker form the conductive major loop of breaker.
Top terminal plate 101, the bottom terminal plate 102 of the insulating cylinder 1 pass through the first sealing ring 5 and insulation barrel 103
Sealing is connected, and the first sealing ring 5 is arranged in the groove of insulation 103 top and bottom of barrel, convenient for being tightly connected.Top wiring
Plate 101, bottom terminal plate 102 can releasably be linked together with insulation barrel 103 by screw bolt and nut, and insulate barrel
103 positions contacted with top terminal plate 101, bottom terminal plate 102 are symmetrically provided with multiple through-holes, for example, eight or
More, which passes through through-hole and nut cooperates, and three is fixed together.In bottom, 102 center of terminal plate is also equipped with use
In being provided with the second sealing ring 6 in the through-hole that pull rod 4 passes through, the through-hole, cooperates with pull rod 4 and seal, on top terminal plate 101
It is provided with charge valve 7, for the anti-corrosion effect of conductive major loop being realized, to be adapted to dry gas is filled with inside insulating cylinder 1
Outdoor environment.
As shown in Figure 1, the fingertip connection component includes upper support seat 8, the bottom surface of the upper support seat 8 and vacuum interrupter 2
Static contact 201 be connected, top surface is provided with lower cylinder 801 straight up, and the lower cylinder 801 is with upper support seat 8 at one
Body formula structure, the bottom surface of top terminal plate 101 are provided with upper cylinder 1011 straight down, cylinder 1011 and top on this
The also integrated structure of terminal plate 101, cylinder 1011 is nested with lower cylinder 801 by spring touch finger 9 on this, spring
Fingertip 9 is arranged in the groove of lower 801 inner sidewall of cylinder.Spring of the spring touch finger 9 using round rich line, line coil of having mercy on
Be it is elliptical, inclined, when compressed, each coil will generate deformation, and no matter which part of coil generates change
Shape, entire spring will all react, to realize that the load on each contact point is consistent.When under the insertion of upper cylinder 1011
When cylinder 801, spring coil deforms under lasting spring stress, at this point, the load of spring coil and setting for groove
Meter will produce lasting spring stress, in this way, need a corresponding withdrawal force then to disconnect connection between the two, because
This, spring touch finger 9 has two-way function, can not only be used for mechanical splice use, can also ensure cylinder 1011 and lower cylinder
Electrical connection between 801 avoids open circuit between the two, to influence the use of breaker.
The conductive connection component includes lower support base 10, the top surface of the lower support base 10 and the moving contact of vacuum interrupter 2
Shell around 202 is connected, and the surrounding of bottom surface is connected by multiple conductive supporting bars 11 with bottom terminal plate 102, such as two,
Center is provided with conducting block 12, and the center of the conducting block 12 is provided with through-hole, and watchband-shaped contactor 13 is provided in through-hole, the vacuum
The moving contact 202 of arc-chutes 2 passes through lower support base 10, the through-hole of conducting block 12 is connected with pull rod 4, and passes through watchband-shaped contactor 13
It is connected with conducting block 12.Also spring touch finger 8 has similar structure and function to the watchband-shaped contactor 13, therefore, can not only be used for machinery and connects
Head uses, and can also ensure the electrical connection between moving contact 202 and conducting block 12, open circuit between the two is avoided, to influence
The use of breaker.
The conductive connection component can also be using the design that is flexible coupling, as shown in Fig. 2, the moving contact 202 of the vacuum interrupter 2
Across lower support base 10,14 it is connected with pull rod 4 by being flexible coupling, which is arranged in moving contact 202 and pull rod 4
Contact site, the other end is connected with lower support base 10.This is flexible coupling 14 using multiple with a thickness of 0.1 millimeter to 0.05 millimeter
Copper sheet is combined, in this way, both can produce certain elastic displacement, can also ensure 10 electricity of moving contact 202 and lower support base
Connection avoids open circuit between the two, to influence the use of breaker.
Rod-like structure can be used in the insulated support 3, and multiple insulated supports 3 are arranged in upper support seat 8, lower support base 10
Between, two or four are usually provided with, the vacuum extinction device 2 setting is in upper support seat 8, lower support base 10 and multiple insulation
In the region that supporting element 3 surrounds.
Conductive major loop structure installation of the invention is as follows:
Firstly, spring touch finger 9 is mounted in the groove in the lower cylinder 801 of upper support seat 8, watchband-shaped contactor 13 is pacified
It is attached in the through-hole in 12 center of conducting block, then conducting block 12 is installed to the bottom surface of lower support base 10, by the quiet of vacuum interrupter 2
Contact 201 is installed to the bottom surface of upper support seat 9, and moving contact 202 passes through the through-hole of lower support base 10 and conducting block 12, recycles exhausted
Edge supporting element 3 connects lower support base 10 with upper support seat 8, using conductive supporting bar 11 by bottom terminal plate 102 under
Support base 10 connects, and the second sealing ring 6 is put into the through-hole of bottom terminal plate 102, then by the pull rod of operating mechanism 4
Apply enough torques on the moving contact 202 that the through-hole is installed to vacuum interrupter 2, while to the pull rod of operating mechanism 4
It is fixed, in this way, being not easy to loosen under higher divide-shut brake speed, can be applied to high voltage DC breaker
In.
Then, in the first sealing ring 5 of installation to the groove of the top and bottom of insulation barrel 103, by top terminal plate 101
Upper cylinder 1011 be inserted into the lower cylinder 801 of upper support seat 8, using screw bolt and nut by top terminal plate 101, bottom
Portion's terminal plate 102 is fixed together with insulation barrel 103, then charge valve 7 is installed on the terminal plate 101 of top, passes through inflation
Valve 7 is to being filled with dry gas inside insulating cylinder 1.Due to top terminal plate 101, insulation barrel 103, the first sealing ring 5, bottom
Terminal plate 102, charge valve 7 form the structure of sealing, it can be achieved that conductive lead back with pull rod 4, the second sealing ring 6 of operating mechanism
The anti-corrosion effect on road can be applied to indoor, outdoor environment.
The present invention also provides a kind of conductive major loop structures based on described above for high voltage DC breaker
Repair method, the screw bolt and nut removed between top terminal plate 101, bottom terminal plate 102 and insulation barrel 103 are connected, are unloaded
Fall top terminal plate 101 and insulation barrel 103, reprocessing for conductive major loop can be carried out；Remove bottom terminal plate 102 and absolutely
Pull rod 4 is laid down in connection between edge barrel 103, pull rod 4, carries out reprocessing for operating mechanism, makes conductive major loop and operating mechanism
Keep apart, can individually reprocess operating mechanism, guarantees that the module of conductive major loop and operating mechanism is reprocessed and be independent of each other.
The present invention is by the first sealing ring of setting and the second sealing ring, by top terminal plate, insulation barrel, bottom terminal plate
And the tie-rod sealing of operating mechanism links together, then by the charge valve of top terminal plate is filled with dry gas, it is real
The anti-corrosion effect of existing conduction major loop, is adapted to outdoor environment, also can be applied to indoor.Pass through the spring of fingertip connection component
The depth of the adjustable upper shell insertion lower shell of fingertip, realizes that the same insulating cylinder can match with various sizes of vacuum extinction device
Installation is closed, the breaker of different model is made, to save production cost, increases economic efficiency；Meanwhile vacuum interrupter is dynamic
There is sufficiently large space between contact and the pull rod of operating mechanism, convenient for applying the fixation of enough torque progress between the two,
In this way, being not easy to loosen under higher divide-shut brake speed, can be applied in high voltage DC breaker.In addition,
Conductive major loop structure of the invention, it is simple and reliable, convenient for application, have good market popularization value.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that these
It is merely illustrative of, without departing from the principle and essence of the present invention, a variety of changes can be made to these embodiments
It more or modifies, therefore, protection scope of the present invention is defined by the appended claims.
Claims (6)
1. a kind of conductive major loop structure for high voltage DC breaker, it is characterised in that: described including closed insulating cylinder
Insulating cylinder is internally provided with vacuum interrupter, and the static contact of the vacuum interrupter passes through the top of fingertip connection component and insulating cylinder
Portion's terminal plate is connected, and the fingertip connection component is for ensureing being electrically connected between the static contact of vacuum interrupter and top terminal plate
It connects, the moving contact of the vacuum interrupter is connected by being conductively connected component with the bottom terminal plate of insulating cylinder, and the fingertip connects
Connected components and be conductively connected between component and be provided with multiple insulated supports, the moving contact of the vacuum interrupter also with actuating machine
The pull rod of structure is connected, and the pull rod passes through bottom terminal plate and is connected with operating mechanism, the top being connected with the input terminal of breaker
Terminal plate, fingertip connection component, vacuum interrupter, the bottom terminal plate for being conductively connected component and being connected with the output end of breaker
Form the conductive major loop of breaker；
The fingertip connection component includes upper support seat, and the bottom surface of the upper support seat is connected with the static contact of vacuum interrupter,
Top surface is provided with lower cylinder straight up, and the bottom surface of the top terminal plate is provided with upper cylinder straight down, institute
Cylinder and lower cylinder is stated to be nested by spring touch finger.
2. the conductive major loop structure according to claim 1 for high voltage DC breaker, it is characterised in that: described to lead
Electrical connection module includes lower support base, and the top surface of the lower support base is connected with the shell around the moving contact of vacuum interrupter,
The surrounding of bottom surface is connected by multiple conductive supporting bars with bottom terminal plate, and center is provided with conducting block, in the conducting block
Centre is provided with through-hole, and watchband-shaped contactor is provided in the through-hole, and the moving contact of the vacuum interrupter passes through lower support base, conduction
The through-hole of block is connected with pull rod, and is connected by watchband-shaped contactor with conducting block.
3. the conductive major loop structure according to claim 1 for high voltage DC breaker, it is characterised in that: described to lead
Electrical connection module includes lower support base, and the top surface of the lower support base is connected with the shell around the moving contact of vacuum interrupter,
The surrounding of bottom surface is connected by multiple conductive supporting bars with bottom terminal plate, and the moving contact of the vacuum interrupter passes through lower support
Seat, is connected by being flexible coupling with pull rod, and described one end being flexible coupling is arranged in the contact site of moving contact and pull rod, the other end and
Lower support base is connected.
4. the conductive major loop structure according to claim 1 for high voltage DC breaker, it is characterised in that: described exhausted
Top terminal plate, the bottom terminal plate of edge cylinder pass through the first sealing ring and are connected with insulation barrel sealing, the top terminal plate,
Bottom terminal plate can releasably link together with insulation barrel, and it is close to be provided with second between the bottom terminal plate and pull rod
Seal is provided with charge valve on the top terminal plate.
5. the conductive major loop structure of high voltage DC breaker is used for described in one of -4 according to claim 1, it is characterised in that:
The insulated support uses rod-like structure, and multiple insulated supports are arranged between upper support seat, lower support base, described
Vacuum extinction device is arranged in the region that upper support seat, lower support base and multiple insulated supports surround.
6. a kind of repair method based on the conductive major loop structure described in claim 1 for high voltage DC breaker,
It is characterized in that: removing the connection between top terminal plate, bottom terminal plate and insulation barrel, lay down top terminal plate and insulating cylinder
Wall carries out reprocessing for conductive major loop；The connection removing bottom terminal plate and insulating between barrel, pull rod, lays down pull rod, carries out
Operating mechanism is reprocessed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810015649.9A CN108039301B (en) | 2018-01-08 | 2018-01-08 | A kind of conductive major loop structure for high voltage DC breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810015649.9A CN108039301B (en) | 2018-01-08 | 2018-01-08 | A kind of conductive major loop structure for high voltage DC breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108039301A CN108039301A (en) | 2018-05-15 |
| CN108039301B true CN108039301B (en) | 2019-04-16 |
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ID=62099330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810015649.9A Active CN108039301B (en) | 2018-01-08 | 2018-01-08 | A kind of conductive major loop structure for high voltage DC breaker |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101677178B (en) * | 2008-09-19 | 2011-11-09 | 沈阳昊诚电气股份有限公司 | Epoxy pouring solid insulation switch with double-isolation |
| CN201608098U (en) * | 2009-11-23 | 2010-10-13 | 山东泰开中压开关有限公司 | Electric conduction structure used for outdoor SF6 inflatable vacuum circuit breaker switch |
| CN204045485U (en) * | 2014-09-02 | 2014-12-24 | 上海舒盈电气有限公司 | A kind of Fast Speed Vacuum Circuit Breaker |
| CN205354944U (en) * | 2015-11-27 | 2016-06-29 | 平高集团有限公司 | High pressure vacuum circuit breaker and monopole thereof |
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| CN108039301A (en) | 2018-05-15 |
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Effective date of registration: 20210827 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. Patentee after: SIEYUAN ELECTRICAL Co.,Ltd. Address before: 510623 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 before: China Southern Power Grid Research Institute Co.,Ltd. Patentee before: CSG POWER GRID TECHNOLOGY RESEARCH CENTER Patentee before: SIEYUAN ELECTRICAL Co.,Ltd. |