CN104464986A - Insulating support structure in inflatable impulse voltage generator - Google Patents
Insulating support structure in inflatable impulse voltage generator Download PDFInfo
- Publication number
- CN104464986A CN104464986A CN201410802094.4A CN201410802094A CN104464986A CN 104464986 A CN104464986 A CN 104464986A CN 201410802094 A CN201410802094 A CN 201410802094A CN 104464986 A CN104464986 A CN 104464986A
- Authority
- CN
- China
- Prior art keywords
- voltage generator
- impulse voltage
- ball bearing
- gas
- supporting structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Wind Motors (AREA)
- Generation Of Surge Voltage And Current (AREA)
Abstract
The invention discloses an insulating support structure in an inflatable impulse voltage generator. The structure comprises drum-type supporting keys (1) and a ball bearing structure (2). The supporting keys are placed around a voltage sharing ring (4), and accordingly enough mechanical strength and stability are guaranteed. The supporting keys (1) are connected with a tank body (3) through the ball bearing structure so that the insulating support structure can move forward and backward so as to be conveniently assembled and disassembled. The supporting keys (1), the ball bearing (2) and the voltage sharing ring (4) are connected through rigid bolts to guarantee supporting strength of the insulating support structure. A column body of the drum-type supporting keys is of a drum shape so that normal component of the field strength of the surfaces of the supporting keys can be reduced, an internal electrode is of a special structure, electric field distribution can be more uniform, and the insulating support structure can bear voltage higher than nominal voltage of the insulating support structure. All connection portions of the supporting keys are of a fillet structure, and electric field distribution is improved.
Description
Technical field
The present invention relates to a kind of gas-filled type surge voltage generating means, the insulating supporting structure particularly in a kind of gas-filled type surge voltage generating means.
Background technology
Impulse voltage generator is mainly used in that the test products such as power equipment carry out lightning impulse voltage all-wave, lightning impulse voltage cuts ripple and the impulse voltage test of operating impulse voltage ripple, inspection insulation property.At present, produce surge voltage and normally rely on impulse voltage generator to produce, and impulse voltage generator mostly is open type surge voltage generating means at present, this generating means is using air as dielectric.Because air electric strength is low, cause this open type to impact generating means bulky, be unfavorable for transport and field test; And this device causes greatly loop inherent inductance large due to bulk, is thus unfavorable for surge waveform steepness, when carrying out the test of Large Copacity test product, also not easily export satisfactory steep-front High Voltage Impulse Waveform.
In traditional oil immersed type steep-front surge voltage generating means, the main body of impulse voltage generator is generally suspended to fuel tank internal by insulating support oblique pull, and in gas-filled type impulse voltage generator, equipment body relies on support key to be supported in tank body.Because impulse voltage generator main body is heavier, and the steep wave amplitude produced is higher, and traditional support key can not meet requirement of mechanical strength and the electrical insulation strength requirement of system.
Gas-filled type surge voltage generating means utilizes SF
6gas instead insulating oil carries out device built-in electrical insulation, significantly reduces the weight of surge voltage generating means, is conducive to operation maintenance.Insulating supporting is needed between apparatus main body and tank body, traditional support key has certain supportive conductors and prevents electric current from returning the ability on ground, but because impulse voltage generator main body is heavier, and the steep wave amplitude produced is higher, traditional support key can not meet requirement of mechanical strength and the electrical insulation strength requirement of system.
Summary of the invention
For the defect existed in prior art, the invention provides the insulating supporting structure in a kind of gas-filled type surge voltage generating means.
An insulating supporting structure for gas-filled type surge voltage generating means inside, comprising: drum-type supports key 1 and ball bearing structure 2.Described grading ring 4 is supported in described tank body 3 by the insulating supporting structure that described drum-type support key 1 and described ball bearing structure 2 form; Described tank body 3 overlaps with the axle center of described grading ring 4.One end of described support key 1 is connected with described grading ring 4, and the other end is connected with described ball bearing 2, and described ball bearing 2 is flexibly connected with the inwall of described cylindrical shape outer tank 3.
Preferably, described insulation support device is angularly uniformly distributed along the inwall of tank body 3.
Preferably, described impulse voltage generator comprises multiple grading ring 4, and described insulation support device is only connected with part grading ring 4.
Preferably, described grading ring 4 and/or ball bearing 2 have depressed part with the junction supporting key 1, and this depressed part matches with support key 1 end.
Preferably, the inwall of described tank body 3 has track 5, described ball bearing 2 is embedded in told track 5.
Preferably, described support key 1 is broad in the middle, the cydariform that two is little.
Preferably, described support key 1 comprises cylinder 1.1 and is positioned at first connecting portion 1.2 and second connecting portion 1.3 at cylinder 1.1 two ends, support key 1 to be connected with grading ring 4 by one end of the first metal extension bar 1.4, be connected with ball bearing 2 by one end of the second metal extension bar 1.5, first connecting portion 1.2 and cylinder 1.1 offer the first groove holding described first metal extension bar 1.4 other end, same second connecting portion 1.3 and cylinder 1.1 offer the second groove holding described second metal extension bar 1.5 other end, be spaced from each other by cylinder 1.1 between the first groove and the second groove.
Preferably, described cylinder 1.1, described first connecting portion 1.2 and described second connecting portion 1.3 all adopt epoxy resin.
Preferably, described first connecting portion 1.2 and/or described second connecting portion 1.3 are all cast in together with described support key 1 inside is cast in described cylinder 1.1.
Preferably, the length of the first metal extension bar 1.4 is greater than the second metal extension bar 1.5.
Compared with prior art, a technical scheme in technique scheme has the following advantages or beneficial effect: the insulating supporting structure that the present invention adopts a kind of drum-type support key to match with roll structure is as the insulation support device in gas-filled type impulse voltage generator.Supporting key is placed in around grading ring, adopts rigidity bolt to be attached thereto, ensure that enough mechanical strengths and stability.It is cydariform that drum-type supports key cylinder, and smooth surface, is conducive to the tangential component increasing its surface field intensity, reduces normal component, improves flashover voltage.The gold utensil main body that support key is connected with grading ring is column, and end is bulb, and cylinder is slightly long; The gold utensil main body be connected with the steel plate of ball bearing is also in column, and end ball size is consistent with above-mentioned, and cylinder is slightly short.This configuration is conducive to improving the mechanical strength supporting key, and can optimize support key surrounding electric field, electric fields uniform is distributed, improves and support key dielectric strength.Bearing steel intralamellar part is embedded with steel ball, is placed on the track inside tank body, apparatus main body can be twitched front and back, be convenient to dismounting.
Accompanying drawing explanation
Fig. 1 is the structural representation of gas-filled type impulse voltage generator of the present invention;
Fig. 2 is the structural representation that the present invention supports key.
Embodiment
Below in conjunction with accompanying drawing, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
In order to meet mechanical strength and the dielectric strength requirement of insulating supporting in gas-filled type impulse voltage generator simultaneously, The present invention gives a kind of novel insulating supporting structure, still good insulation property are kept under the steep wave that amplitude is higher, and utilize ball bearing structure to make equipment can pull, be easy to dismounting.
As shown in Figure 1, the insulating supporting structure of gas-filled type surge voltage generating means inside of the present invention comprises: drum-type supports key 1 and ball bearing structure 2.Grading ring 4 is supported in tank body 3 by the insulating supporting structure that drum-type support key 1 and ball bearing structure 2 form.Tank body 3 overlaps with the axle center of grading ring 4.Support one end of key 1 to be connected with grading ring 4, the other end is connected with ball bearing 2, and ball bearing 2 is flexibly connected with the inwall of institute cylindrical shape outer tank 3.Insulation support device is angularly uniformly distributed along the inwall of tank body 3, such as can be designed by the arrangement in isosceles triangle outside grading ring of three bracing or strutting arrangements, 120 degree, interval between each device, such design both fully can ensure the stability of device support, effectively can reduce again the height of Whole Equipment, reduce device volume.Generally speaking, impulse voltage generator all comprises multiple grading ring 4, multiple grading ring 4 is along the axle center arranged radially of tank body 3, preferably, the present invention can install one group of bracing or strutting arrangement at interval of a grading ring, so do not need each grading ring is installed to support key, so not only do not affect device performance but also cost-saved.
As seen from Figure 1, support key 1 for supporting grading ring and isolating current potential, supporting key 1 can in middle bigger, the cydariform that two is smaller.Along with the increase of electric field degree of irregularity, the electric strength supporting key 1 will reduce.In order to improve flashover voltage, its surrounding electric field must be made to distribute more even.Anticyclonic SF is filled with in tank body 3
6, grading ring 4 can produce three binding sites with the intersection supporting key 1, comparatively weak in electric insulation.Grading ring 4 can find out with the intersection supporting key 1 depression had to a certain degree in FIG, and this depressed part and support key 1 end anastomosis, can make the Electric Field Distribution at this three binding sites place more even like this, improve flashover voltage.Equally, also similar structure to be designed at ball bearing 2 to the intersection supporting key 1.
There are four right-angle structures grading ring 4 inside, is positioned at the right-angle structure of below for supporting the main body of impulse voltage generator.Two right-angle structures being positioned at top all have through hole, the main body of generating means can be fixed on grading ring 4 by rigidity bolt, ensure that the stable of device.In order to make electric fields uniform, avoid point discharge, right angle supports and is fillet structure.
Support key 1 is connected with the Interal fixation of ball bearing 2 by the present invention, and two preferably can be settled on every block plate to support key, and supporting key 1 can be fixed itself and ball bearing 2 by bolt.Ball bearing 2 is positioned on the track 5 of tank body, the ball of ball bearing 2 is embedded in the steel plate inside of ball bearing 2, with coordinating of track 5, impulse voltage generator main body can freely be twitched by ball bearing 2 like this, be conducive to the dismounting of device, be also conducive to investigation and the maintenance of equipment fault.
Support the structure of key 1 as shown in Figure 2, support the first connecting portion 1.2 and the second connecting portion 1.3 that key 1 comprises cylinder 1.1 and is positioned at cylinder 1.1 two ends, support key 1 to be connected with grading ring 4 by one end of the first metal extension bar 1.4, be connected with ball bearing 2 by one end of the second metal extension bar 1.5, first connecting portion 1.2 and cylinder 1.1 offer the first groove holding described first metal extension bar 1.4 other end, same second connecting portion 1.3 and cylinder 1.1 offer the second groove holding described second metal extension bar 1.5 other end, be spaced from each other by cylinder 1.1 between the first groove and the second groove, the bottom of the first groove and/or the second groove can be spherical in shape, make the connection of the first metal extension bar 1.4 and/or the second metal extension bar 1.5 more firm like this.
Cylinder 1.1 can be cydariform.Because weight of equipment is heavier, output voltage is higher, and supporting key 1 must have good mechanical strength and dielectric strength.The advantage such as consider that epoxy resin has that cementability is good, shrinkage is low in solidification process, mechanical strength is high and electrical insulation properties is excellent, therefore can select it to support the mould material of key cylinder 1.1 as cydariform.Experimental study shows, the normal component of cylinder 1.1 surface electric field intensity is larger, supports key 1 and more easily flashover occurs.In order to reduce the normal component of cylinder 1.1 surface electric field intensity, be designed to class elliposoidal/cydariform, two ends are relatively milder, for settling connection gold utensil.This design effectively can reduce the normal component of its surface electric field intensity.
In order to ensure enough mechanical strengths, the material that drum-type supports key 1 first metal extension bar 1.4 and/or the second metal extension bar 1.5 is preferably aluminium.More even in order to make to support key surface Electric Field Distribution, the intersection of raised structures and cylinder and grading ring is fillet structure.Similar with it, also there is same structure with the gold utensil head projection that bearing steel plate is connected.
Generally speaking larger the closer to grading ring 4 electric field strength, in order to more be conducive to optimizing Electric Field Distribution, together with the main body of the first connecting portion 1.2 and/or the second connecting portion 1.3 is all cast in and supports that key is inner and be cast in cylinder 1.The length of the first metal extension bar 1.4, slightly larger than the second metal extension bar 1.5, is so more conducive to optimizing electric field.
Drum-type supports the concrete size of key 1 should with the weight of gas-filled type surge voltage generating means main body and device output voltage for foundation, and the basis of mentioned embodiment is in the present invention designed.
Next the assembling process of insulating supporting structure in gas-filled type impulse voltage generator of the present invention will be described in detail.
(1) electric capacity of apparatus main body and switches set are installed complete.
(2) apparatus main body is fixed in grading ring.
(3) as shown in Figure 1, be connected with grading ring by drum-type is supported key, form a whole.
(4) as shown in Figure 1, ball bearing is connected with support key.
(5) as shown in Figure 1, ball is loaded bearing steel intralamellar part, then screw on bearing bracket stand.
(6) device entirety is sling, make ball bearing be adjusted to the position corresponding with tank body track, then it is slowly pushed tank interior, complete assembling.
Above to invention has been detailed introduction, applying specific case herein and setting forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. the insulating supporting structure in gas-filled type impulse voltage generator, comprising: drum-type supports key (1) and ball bearing structure (2), it is characterized in that:
Described grading ring (4) is supported in described tank body (3) by the insulating supporting structure that described drum-type support key (1) and described ball bearing structure (2) form; Described tank body (3) overlaps with the axle center of described grading ring (4);
One end of described support key (1) is connected with described grading ring (4), the other end is connected with described ball bearing (2), and described ball bearing (2) is flexibly connected with the inwall of described cylindrical shape outer tank (3).
2. the insulating supporting structure in a kind of gas-filled type impulse voltage generator according to claim 1, it is characterized in that, preferably, described insulation support device is angularly uniformly distributed along the inwall of tank body (3).
3. the insulating supporting structure in a kind of gas-filled type impulse voltage generator according to claim 1, it is characterized in that, described impulse voltage generator comprises multiple grading ring (4), and described insulation support device is only connected with part grading ring (4).
4. the insulating supporting structure in a kind of gas-filled type impulse voltage generator according to claim 1, it is characterized in that, the junction that described grading ring (4) and/or ball bearing (2) and cydariform support key (1) has depressed part, and this depressed part and cydariform support key (1) end and match.
5. the insulating supporting structure in a kind of gas-filled type impulse voltage generator according to claim 1, it is characterized in that, the inwall of described tank body (3) has track (5), described ball bearing (2) is embedded in told track (5).
6. the insulating supporting structure in a kind of gas-filled type impulse voltage generator according to claim 1, is characterized in that, described support key (1) in broad in the middle, the cydariform that two is little.
7. the insulating supporting structure in a kind of gas-filled type impulse voltage generator according to claim 1, it is characterized in that, described support key (1) comprises cylinder (1.1) and is positioned at the first connecting portion (1.2) and second connecting portion (1.3) at cylinder (1.1) two ends, support key (1) to be connected with grading ring (4) by one end of the first metal extension bar (1.4), be connected with ball bearing (2) by one end of the second metal extension bar (1.5), first connecting portion (1.2) and cylinder (1.1) offer the first groove holding described first metal extension bar (1.4) other end, same second connecting portion (1.3) and cylinder (1.1) offer the second groove holding described second metal extension bar (1.5) other end, be spaced from each other by cylinder (1.1) between the first groove and the second groove.
8. the insulating supporting structure in a kind of gas-filled type impulse voltage generator according to claim 7, it is characterized in that, described cylinder (1.1), described first connecting portion (1.2) and/or described second connecting portion (1.3) all adopt epoxy resin.
9. the insulating supporting structure in a kind of gas-filled type impulse voltage generator according to claim 7, it is characterized in that, it is inner that described first connecting portion (1.2) and/or described second connecting portion (1.3) are all cast in described support key (1), together with being cast in described cylinder (1.1).
10. the insulating supporting structure in a kind of gas-filled type impulse voltage generator according to claim 7, is characterized in that, the length of the first metal extension bar (1.4) is greater than the second metal extension bar (1.5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410802094.4A CN104464986B (en) | 2014-12-19 | 2014-12-19 | Insulating support structure in inflatable impulse voltage generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410802094.4A CN104464986B (en) | 2014-12-19 | 2014-12-19 | Insulating support structure in inflatable impulse voltage generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104464986A true CN104464986A (en) | 2015-03-25 |
| CN104464986B CN104464986B (en) | 2017-02-22 |
Family
ID=52910911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410802094.4A Active CN104464986B (en) | 2014-12-19 | 2014-12-19 | Insulating support structure in inflatable impulse voltage generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104464986B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866481A (en) * | 2015-11-20 | 2016-08-17 | 扬州市鑫源电气有限公司 | Cordwood air-inflation-type impact voltage generating device |
| CN111627623A (en) * | 2020-05-28 | 2020-09-04 | 西安交通大学 | Grading ring assembly for closed impulse voltage generator |
| CN114545175A (en) * | 2022-03-02 | 2022-05-27 | 江苏盛华电气有限公司 | SF6 gas impulse voltage generator capable of reducing electric field intensity |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3739074A (en) * | 1971-09-16 | 1973-06-12 | Bbc Brown Boveri & Cie | Insulation gas filled tubular casing structure for high voltage conductor |
| US4370511A (en) * | 1981-03-17 | 1983-01-25 | Westinghouse Electric Corp. | Flexible gas insulated transmission line having regions of reduced electric field |
| CN2884445Y (en) * | 2006-04-04 | 2007-03-28 | 大全集团有限公司 | Three column type insulator used for high-voltage gas insulation bus |
| CN201319278Y (en) * | 2008-12-09 | 2009-09-30 | 中国西电电气股份有限公司 | Novel pillar composite insulator |
| CN201708082U (en) * | 2010-07-06 | 2011-01-12 | 沈阳华利能源设备制造有限公司 | High-voltage link insulator |
| CN201975178U (en) * | 2010-12-15 | 2011-09-14 | 中国西电电气股份有限公司 | Pipeline bus insulator structure with three struts |
-
2014
- 2014-12-19 CN CN201410802094.4A patent/CN104464986B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3739074A (en) * | 1971-09-16 | 1973-06-12 | Bbc Brown Boveri & Cie | Insulation gas filled tubular casing structure for high voltage conductor |
| US4370511A (en) * | 1981-03-17 | 1983-01-25 | Westinghouse Electric Corp. | Flexible gas insulated transmission line having regions of reduced electric field |
| CN2884445Y (en) * | 2006-04-04 | 2007-03-28 | 大全集团有限公司 | Three column type insulator used for high-voltage gas insulation bus |
| CN201319278Y (en) * | 2008-12-09 | 2009-09-30 | 中国西电电气股份有限公司 | Novel pillar composite insulator |
| CN201708082U (en) * | 2010-07-06 | 2011-01-12 | 沈阳华利能源设备制造有限公司 | High-voltage link insulator |
| CN201975178U (en) * | 2010-12-15 | 2011-09-14 | 中国西电电气股份有限公司 | Pipeline bus insulator structure with three struts |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866481A (en) * | 2015-11-20 | 2016-08-17 | 扬州市鑫源电气有限公司 | Cordwood air-inflation-type impact voltage generating device |
| CN105866481B (en) * | 2015-11-20 | 2019-01-22 | 扬州市鑫源电气有限公司 | A kind of building block system Puffer-type surge voltage generating device |
| CN111627623A (en) * | 2020-05-28 | 2020-09-04 | 西安交通大学 | Grading ring assembly for closed impulse voltage generator |
| CN111627623B (en) * | 2020-05-28 | 2021-08-27 | 西安交通大学 | Grading ring assembly for closed impulse voltage generator |
| CN114545175A (en) * | 2022-03-02 | 2022-05-27 | 江苏盛华电气有限公司 | SF6 gas impulse voltage generator capable of reducing electric field intensity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104464986B (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102901917B (en) | Field generating device of steep pulses | |
| CN201654173U (en) | Resistor core bar withstand voltage test device for 800KV grade GIS | |
| CN202167762U (en) | Bus assembly for super-high voltage engineering GIS | |
| CN104464986A (en) | Insulating support structure in inflatable impulse voltage generator | |
| CN203299231U (en) | Wall casing pressure test stand | |
| CN102255552B (en) | Compact type fast pulse discharging unit | |
| CN105866481B (en) | A kind of building block system Puffer-type surge voltage generating device | |
| CN202473442U (en) | Voltage equalizing shielding cylinder of porcelain bushing conductor | |
| CN201156453Y (en) | Equalized voltage ring construction | |
| CN112180224A (en) | Iron tank type SF6 gas surge voltage generator | |
| CN109327208B (en) | Coaxial Marx generator | |
| CN101211690B (en) | +/-500kV direct current mutual inductor | |
| CN205484445U (en) | Tandem SF6 gas -insulated impulse voltage generating device | |
| Wang et al. | Electric field calculation and grading ring design for 330kV terminal tower with composite cross-arms | |
| CN101127274B (en) | Current transformer of gas insulated metal sealing switchgear | |
| CN205898960U (en) | Inside bolt looseness defects simulation device of GIS equipment | |
| CN202363343U (en) | Main-loop insulation part of three-position disconnecting switch | |
| CN104022443A (en) | Cantilever supporting voltage limiter for traction power supply electric railway | |
| CN205502700U (en) | A iron tower for setting up high -tension transmission wire | |
| Wang et al. | Voltage sharing characteristics of V-type suspension ceramic insulator strings for UHV AC substation | |
| CN202172009U (en) | Shielding device for contact box type current transformer | |
| CN207490307U (en) | A kind of transmission facility lightning rod | |
| CN202066936U (en) | Insulating rope testing rack | |
| CN201904598U (en) | Insulating cylinder | |
| CN101834410B (en) | Shock-proof reinforced reforming method for existing transformer substation bus equipment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Weijiang Inventor after: Li Zhibing Inventor after: Pang Lei Inventor after: Liu Xuandong Inventor after: Wang Qiang Inventor after: Tang Baoguo Inventor after: Zhang Qiaogen Inventor after: Qin Yifan Inventor after: Guo Can Inventor after: You Haoyang Inventor after: Wen Tao Inventor after: Zhao Junping Inventor after: Yin Yu Inventor after: Shi Weidong Inventor before: Chen Weijiang Inventor before: Li Zhibing Inventor before: Pang Lei Inventor before: Liu Xuandong Inventor before: Zhang Qiaogen Inventor before: Qin Yifan Inventor before: Guo Can Inventor before: You Haoyang Inventor before: Wen Tao Inventor before: Zhao Junping Inventor before: Yin Yu Inventor before: Shi Weidong |
|
| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160331 Address after: 710049 Xianning West Road, Shaanxi, China, No. 28, No. Applicant after: Xi'an Jiaotong University Applicant after: State Grid Corporation of China Applicant after: China Electric Power Research Institute Applicant after: STATE GRID SHANXI ELECTRIC POWER CO., LTD. Address before: 710049 Xianning West Road, Shaanxi, China, No. 28, No. Applicant before: Xi'an Jiaotong University Applicant before: State Grid Corporation of China Applicant before: China Electric Power Research Institute |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |