CN102842858B - Movable high-voltage high-capacity chain type STATCOM system container structure - Google Patents
Movable high-voltage high-capacity chain type STATCOM system container structure Download PDFInfo
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- CN102842858B CN102842858B CN201210274344.2A CN201210274344A CN102842858B CN 102842858 B CN102842858 B CN 102842858B CN 201210274344 A CN201210274344 A CN 201210274344A CN 102842858 B CN102842858 B CN 102842858B
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- 238000012216 screening Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000009826 distribution Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000004378 air conditioning Methods 0.000 claims description 7
- 230000005855 radiation Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 7
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000010923 batch production Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 241000269793 Cryothenia peninsulae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/22—Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
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Abstract
Movable high-voltage high-capacity chain type STATCOM system container structure, comprise: two chain type STATCOM systems in parallel, each system, comprise three-phase chain H bridge power cell group, every unit group comprises several H bridge power units of series connection, add each reactor in two ends, every unit group is placed in a valve group container, two reactors of every unit group are placed up and down, be placed in outside container, two parallel systems can respectively by QF1 and QF2 two high-voltage switch gears and the direct screening of 35kV electrical network; Totally 7, chain type STATCOM system container, 6 is valve group container, and 1 is domination set vanning.Cost of the present invention is low, good heat dissipation, facilitates the STATCOM of different voltage and different capabilities to produce in batches, and compact conformation, install, debug, keep in repair, dismantle and transport and all quite put just, field is placed and is installed simply, is also convenient to power expansion and safe operation, can meet Large Copacity installation needs.
Description
Technical field
The present invention relates to a kind of chain static synchronous compensator (STATCOM) system configuration, especially relate to a kind of 35kV ± 200Mvar chain type STATCOM two-generator parallel-running system structure of movable container formula.
Background technology
Along with socioeconomic development, the raising of living standards of the people, electrical energy demands amount increases day by day, the capacity of generating equipment and exert oneself constantly increase, simultaneously supply district also corresponding expansion, and develops to large-scale pool gradually.For meeting growing electrical energy demands, electric power system there occurs many new change, such as, the rising of line voltage grade, electric power system interconnected, the generally application of heavy-duty generator group, away from the hydroelectric plant of load center, pit-head power station, the emerging in large numbers of nuclear power plant, concentrating of load capacity, the application of direct current transportation and novel electric power electric control device.These new change, for reasonable energy utilization, are increased economic efficiency all significant with protection of the environment.But be subject to the restriction of environment and construction cost, electric network composition is but relatively weak, generating equipment storage level is less, under system often operates in heavy load conditions, this brings many problems to the safe operation of electric power system, and load or large-area power-cuts are lost in one of them local being spread of voltage or voltage collapse cause.
Voltage stabilization is an important topic in stability of power system research.The large-scale blackout that the marketization of power industry is changed and repeatedly occurred in world wide in recent years, makes Voltage-stabilizing Problems be subject to showing great attention to of power industry circle and academia.Receiving end voltage support and accident emergency measure are strengthened in research, avoid the generation of pernicious voltage collapse accident, have the meaning of particular importance.
Mechanism and the control device of finding Voltage Instability, all to this input research, are attempted by each state.The appearance of flexible AC power transmission and distribution FACTS (Flexible AC Transmission System) technology brings new control technology and means.Wherein, STATCOM STATCOM receives great attention, and along with the development of power electronic technology and high power device manufacturing technology, STATCOM equipment reaches its maturity, and the safe and stable operation for electric power system plays the effect become more and more important.
The power device that the STATCOM device of the transmission system succeeded in developing at present and running uses is mostly IGBT, is used for voltage and the less distribution system of capacity.And high pressure (35kV) Large Copacity (± 200Mvar) need adopt IEGT High voltage power device.
In the prior art, STATCOM system configuration is all small frame structure, or controls cabinet, and be placed on machine room inside, such cost is high, needs secondary to dispel the heat.
In addition, power cell of the prior art is all framework Assembling structure, does not realize modular construction, the STATCOM batch production of inconvenient different voltage and different capabilities, causes installation, debugging, maintenance not to put just like this.
Further, in the prior art, chain type STATCOM is not easy to power expansion and safe operation.
In the prior art, employing IEGT High voltage power device, 35kV high pressure is still lacked, the jumbo chain type STATCOM of ± 200Mvar.
Summary of the invention
Technical problem to be solved by this invention, just be to provide a kind of movable high-voltage high-capacity chain type STATCOM system container structure, its cost is low, good heat dissipation, the STATCOM of different voltage and different capabilities is facilitated to produce in batches, and compact conformation, install, debug, keep in repair, dismantle and transport and all quite put just, installation is placed simply in field, also be convenient to power expansion and safe operation, Large Copacity installation needs can be met.
Solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:
Movable high-voltage high-capacity chain type STATCOM system container structure, is characterized in that:
Comprise: two chain type STATCOM systems in parallel are shown in Fig. 1, each chain type STATCOM system, see Fig. 2, comprise three-phase chain H bridge power cell group, every phase chain H bridge power cell group comprises several H bridge power units of series connection, add each reactor in two ends, every phase chain H bridge power cell group is placed in a valve group container, two reactors of every phase chain H bridge power cell group are placed up and down, be placed in outside described valve group container, two chain type STATCOM systems in parallel can respectively by QF1 and QF2 two high-voltage switch gears and the direct screening of 35kV electrical network, totally 7, chain type STATCOM system container, 6 containers are valve group container, and 1 is control system container (13), sees Fig. 3.
Described each valve group container, is shown in Fig. 4 and Fig. 7 (side-looking of Fig. 4), and the top of valve group container (1) is provided with 3 groups of water wind heat exchangers (2), and sidewall is provided with hinged door and emergency exits (5), and an end-face wall is provided with wall bushing (6) and facilitates threading;
The upper equipment installed of described valve group container (1) comprises:
Air-conditioning (4), is located at the one end on valve group container top;
Water-cooled main frame (7), is located at the other end in valve group container, is communicated with valve group container outer water tube (3) with air-conditioning (4);
Valve terminal (8), is positioned at valve group container, with insulated column (28) jack-up and along the row discharge of valve group container length direction 5 from the other end in valve group container;
Water-cool control cabinet (10), is located in valve group container between water-cooled main frame and valve terminal, and three is communicated with valve group internal container water pipe (9);
Pulse cabinet (11) and isolated from power cabinet (12), be positioned between water-cool control cabinet (10) and water-cooled main frame successively;
Described water wind heat exchanger (2) is see Fig. 5 and Fig. 6, and each water wind heat exchanger comprises: three groups of motors (2-2) and fan (2-1) dispel the heat to water of radiation bobbin carriage (2-3).
Described domination set vanning (13) built with equipment comprise:
Successively from domination set vanning in one end along domination set vanning length direction arrangement device control cubicle II (14), device control cubicle I (15), system control cabinet (16), system monitoring cabinet (17), remote monitoring cabinet (18), failure wave-recording cabinet (19), direct current cabinet III (20), direct current cabinet II (21), direct current cabinet I (22), low-voltage distribution III (23), low-voltage distribution II (24), be press-fitted electricity I (25), PS power cabinet I (26) and PS power cabinet II (27).
The H bridge logical circuit of this STATCOM is prior art, and its H-bridge circuit and H bridge construction have applied for patent in addition.H-bridge circuit patent is authorized, and the patent No. is ZL201020128033.1; H bridge construction comprises two IEGT phase modules, two capacitance modules, voltage crowbar module and bypass modules, see Fig. 9 and Figure 10, wherein mainly comprises two IEGT phase modules (authorize patent of invention, the patent No. is ZL2010101216772), sees Figure 11.
Compared with prior art, the invention has the beneficial effects as follows:
1) the valve group of 35kV ± 200Mvar chain type STATCOM two-generator parallel-running system is outdoor container structure, need not ad hoc factory building, makes user greatly reduce cost, is convenient to transport, in-site installation and debugging and maintenance;
2) 35kV ± 200Mvar chain type STATCOM two-generator parallel-running system, have employed the modular constructions such as container, H bridge and IEGT phase module, is convenient to assembling, debugging and safeguards, being more suitable for series and batch production, and this is a great theory structure innovation;
3) the valve group of 35kV ± 200Mvar chain type STATCOM two-generator parallel-running system is high-voltage large-capacity electron electric power equipment, adopts water wind heat exchange associating cooling system, solves a heat dissipation technology difficult problem for high-voltage large-capacity power valve group, have practical value;
4) this 35kV ± 200Mvar chain type STATCOM system, belong to high-voltage large-capacity power electronics equipment, its system adopts container structure, solves the key issues such as withstand voltage, moistureproof and safety; Structure is optimized further, guarantees accuracy, reasonability that electric unit connects; Load mode changes to some extent, ensures the renewal of electric original paper and the reasonable installation after optimizing, and install firmly, bearing capacity is strong, conveniently long-distance transport.
5) rational in infrastructure compact, integrated level is high, can meet Large Copacity installation requirement.
Accompanying drawing explanation
Fig. 1 is the theory diagram of movable container formula 35kV of the present invention ± 200Mvar chain type STATCOM two-generator parallel-running system;
Fig. 2 is the valve group container configuration block diagram of movable container formula 35kV of the present invention ± 200Mvar chain type STATCOM two-generator parallel-running system;
Fig. 3 is the outdoor allocation plan of valve group container of movable container formula 35kV of the present invention ± 200Mvar chain type STATCOM two-generator parallel-running system;
Fig. 4 is the valve group internal container structure chart of movable container formula 35kV of the present invention ± 200Mvar chain type STATCOM two-generator parallel-running system;
Fig. 5 is the valve group container external structure of movable container formula 35kV of the present invention ± 200Mvar chain type STATCOM two-generator parallel-running system;
Fig. 6 is the hot device structure chart of valve group Ji vanning Shui Change of movable container formula 35kV of the present invention ± 200Mvar chain type STATCOM two-generator parallel-running system;
Fig. 7 is the internal structure end view of movable container formula 35kV of the present invention ± 200Mvar chain type STATCOM two-generator parallel-running system valve group container;
Fig. 8 is the H bridge logical circuitry in movable container formula 35kV of the present invention ± 200Mvar chain type STATCOM;
Fig. 9 is the front view B0 of of the present invention STATCOM H bridge construction;
The rearview B1 of this STATCOM of Figure 10 H bridge construction;
The structure chart of the IEGT phase mould A10 in this STATCOM of Figure 11 H bridge;
Figure 12 is the internal configuration diagram of movable container formula 35kV of the present invention ± 200Mvar chain type STATCOM two-generator parallel-running system domination set vanning.
In figure: 1-valve group container, 2-water wind heat exchanger, 2-1-fan, 2-2-motor, 2-3-water of radiation bobbin carriage, 3-container outer water tube, 4-air-conditioning, 5-emergency exits, 6-wall bushing, 7-water-cooled main frame, 8-valve terminal, 9-internal container water pipe, 10-water-cool control cabinet, 11-pulse cabinet, 12-isolated from power cabinet, 13-domination set is cased, 14-device control cubicle II, 15-device control cubicle I, 16-system control cabinet, 17-system monitoring cabinet, 18 – remote monitoring cabinets, 19 – failure wave-recording cabinets, 20-direct current cabinet III, 21-direct current cabinet II, 22-direct current cabinet I, 23-low-voltage distribution III, 24-low-voltage distribution II, 25-low-voltage distribution I, 26-UPS power cabinet I, 27-UPS power cabinet II, 28-insulated column.
Embodiment
As Fig. 1 to Fig. 7, and shown in Figure 12, moveable 35kV ± 200Mvar chain type STATCOM two-generator parallel-running system of the present invention, comprising:
Two chain type STATCOM systems in parallel, each chain type STATCOM system comprises three-phase chain H bridge power cell group, see Fig. 1 and Fig. 2, 26 H bridge power units that every phase chain H bridge power cell group comprises series connection add each reactor in two ends, every phase chain H bridge power cell group is placed in a valve group container, six identical current transformer container 1 ﹟ ~ 6 ﹟ on-the-spot arrangements out of doors successively, two reactors of every phase chain H bridge power cell group are placed up and down, be placed in container outer (see Fig. 3), two chain type STATCOM systems in parallel can respectively by QF1 and QF2 two high-voltage switch gears and 35kV electrical network direct connection see Fig. 1 and Fig. 2.
See Fig. 5, a side of valve group container 1 is provided with 3 fan hinged doors and emergency exits 5, end-face wall and is provided with wall bushing 6 and facilitates threading.
The equipment that valve group container 1 is installed comprises:
See Fig. 4, Fig. 5, water wind heat exchanger 2, is located at the one end on container top; Air-conditioning 4, is located at the other end on container top; Water-cooled main frame 7, is located at the one end in container, is communicated with container outer water tube 3 with air-conditioning 4, and see Fig. 6, water wind heat exchanger 2 is: three groups of motor 2-2 and fan 2-1 dispel the heat to water of radiation bobbin carriage 2-3.
See Fig. 4 and Fig. 7, valve terminal 8, is positioned at container, to arrange from the other end in container with insulated column 28 jack-up along container length direction; Water-cool control cabinet 10, is located in container between water-cooled main frame and valve terminal, and three is communicated with internal container water pipe 9; Pulse cabinet 11 and isolated from power cabinet 12, successively between water-cool control cabinet 10 and water-cooled main frame.
See Figure 12, domination set is cased, and in-built control appliance has control line to be connected with all devices of chain type STATCOM system, and on-the-spot placement separately, is shown in Fig. 3 out of doors, domination set case built with equipment comprise:
Successively from the one end in container along device control cubicle II 14, device control cubicle I 15, system control cabinet 16, system monitoring cabinet 17, remote monitoring cabinet 18, failure wave-recording cabinet 19, direct current cabinet III 20, direct current cabinet II 21, direct current cabinet I 22, low-voltage distribution III 23, the low-voltage distribution II 24 of the arrangement of container length direction, be press-fitted electricity I 25, PS power cabinet I 26 and PS power cabinet II 27.
Fig. 8 to Figure 11 is the prior art equipment drawing comprised in moveable 35kV ± 200Mvar chain type STATCOM two-generator parallel-running system of the present invention.
Claims (1)
1. a movable high-voltage high-capacity chain type STATCOM system container structure, it is characterized in that: comprise two chain type STATCOM systems in parallel, each chain type STATCOM system comprises three-phase chain H bridge power cell group, every phase chain H bridge power cell group comprise series connection several H bridge power units, add each reactor in two ends; Every phase chain H bridge power cell group is placed in a valve group container (1), two reactors of every phase chain H bridge power cell group are placed up and down, be placed in outside described valve group container, two chain type STATCOM systems in parallel can respectively by QF1 and QF2 two high-voltage switch gears and the direct screening of 35kV electrical network; Also be provided with domination set vanning (13);
The upper equipment installed of described valve group container (1) comprises:
3 groups of water wind heat exchangers (2), are located at the top of valve group container (1);
Air-conditioning (4), is located at the one end on valve group container top;
Hinged door and emergency exits (5), be located on a sidewall of valve group container (1);
Wall bushing (6), is located in an end-face wall of valve group container (1);
Water-cooled main frame (7), is located at the other end in valve group container, is communicated with valve group container outer water tube (3) with air-conditioning (4);
Valve terminal (8), is positioned at valve group container, with insulated column (28) jack-up and along the row discharge of valve group container length direction 5 from the other end in valve group container;
Water-cool control cabinet (10), is located in container between water-cooled main frame and valve terminal, and three is communicated with internal container water pipe (9);
Pulse cabinet (11) and isolated from power cabinet (12), be positioned between water-cool control cabinet (10) and water-cooled main frame successively;
Described water wind heat exchanger (2) comprising: three groups of motors (2-2) and fan (2-1) dispel the heat to water of radiation bobbin carriage (2-3);
Described domination set vanning (13) built with equipment comprise:
Successively from described domination set vanning in one end along domination set vanning length direction arrangement device control cubicle II (14), device control cubicle I (15), system control cabinet (16), system monitoring cabinet (17), remote monitoring cabinet (18), failure wave-recording cabinet (19), direct current cabinet III (20), direct current cabinet II (21), direct current cabinet I (22), low-voltage distribution III (23), low-voltage distribution II (24), be press-fitted electricity I (25), PS power cabinet I (26) and PS power cabinet II (27).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210274344.2A CN102842858B (en) | 2012-08-02 | 2012-08-02 | Movable high-voltage high-capacity chain type STATCOM system container structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210274344.2A CN102842858B (en) | 2012-08-02 | 2012-08-02 | Movable high-voltage high-capacity chain type STATCOM system container structure |
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| CN102842858A CN102842858A (en) | 2012-12-26 |
| CN102842858B true CN102842858B (en) | 2015-09-09 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515375A (en) * | 2015-12-28 | 2016-04-20 | 国网智能电网研究院 | Movable high-voltage large-capacity DC/DC converter |
| CN108990375B (en) * | 2018-07-23 | 2020-07-28 | 南京南瑞继保电气有限公司 | Vehicle-mounted box type water-cooling STATCOM device |
| CN115513969B (en) * | 2022-11-22 | 2023-03-24 | 四川大学 | Low-capacitance cascaded H-bridge STATCOM and switch modulation and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044879A (en) * | 2010-12-31 | 2011-05-04 | 中电普瑞科技有限公司 | Movable type static synchronous compensator (STATCOM) with modularization structure |
| CN201956688U (en) * | 2010-12-31 | 2011-08-31 | 中电普瑞科技有限公司 | Movable static synchronous compensator with modular structure |
| CN201994672U (en) * | 2011-01-28 | 2011-09-28 | 中电普瑞科技有限公司 | Movable static synchronous compensator with compact structural design |
| CN202840300U (en) * | 2012-08-02 | 2013-03-27 | 广东电网公司东莞供电局 | Removable high-voltage high-capacity chained STATCOM system container structure |
-
2012
- 2012-08-02 CN CN201210274344.2A patent/CN102842858B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044879A (en) * | 2010-12-31 | 2011-05-04 | 中电普瑞科技有限公司 | Movable type static synchronous compensator (STATCOM) with modularization structure |
| CN201956688U (en) * | 2010-12-31 | 2011-08-31 | 中电普瑞科技有限公司 | Movable static synchronous compensator with modular structure |
| CN201994672U (en) * | 2011-01-28 | 2011-09-28 | 中电普瑞科技有限公司 | Movable static synchronous compensator with compact structural design |
| CN202840300U (en) * | 2012-08-02 | 2013-03-27 | 广东电网公司东莞供电局 | Removable high-voltage high-capacity chained STATCOM system container structure |
Non-Patent Citations (2)
| Title |
|---|
| 南方电网±200Mvar静止同步补偿装置系统调试;许叔楷等;《南方电网技术》;20120430;第6卷(第2期);第21-25页 * |
| 静止同步补偿器(STATCOM)在南网中的运用;刘培杰;《广东科技》;20110630(第12期);第116-117页 * |
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Address after: 523000 Dongcheng District, Guangdong Province, the main mountain vortex Ridge Patentee after: Dongguan Power Supply Bureau of Guangdong Power Grid Co., Ltd Patentee after: MONTNETS RONGXIN TECHNOLOGY GROUP CO.,LTD. Address before: 523008 Guangdong city of Dongguan province Dongcheng District East Building No. 239 Patentee before: Dongguan Power Supply Bureau,Guangdong Power Grid Corporation Patentee before: RONGXIN POWER ELECTRONIC Co.,Ltd. |
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Application publication date: 20121226 Assignee: RONGXIN HUIKO ELECTRIC TECHNOLOGY Co.,Ltd. Assignor: MONTNETS RONGXIN TECHNOLOGY GROUP CO.,LTD. Contract record no.: 2017210000040 Denomination of invention: Movable high-voltage high-capacity chained STATCOM system container structure Granted publication date: 20150909 License type: Common License Record date: 20171212 |
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Effective date of registration: 20200201 Address after: 523008, 239, Dongcheng building, Dongcheng District, Guangdong, Dongguan Co-patentee after: RONGXIN HUIKO ELECTRIC TECHNOLOGY Co.,Ltd. Patentee after: Dongguan Power Supply Bureau of Guangdong Power Grid Co., Ltd Address before: 523000 main mountain range, Dongcheng District, Guangdong, Dongguan Co-patentee before: MONTNETS RONGXIN TECHNOLOGY GROUP CO.,LTD. Patentee before: Dongguan Power Supply Bureau of Guangdong Power Grid Co., Ltd |
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| CP01 | Change in the name or title of a patent holder |
Address after: 523008 Dongcheng Building 239, Dongcheng District, Dongguan City, Guangdong Province Patentee after: Dongguan Power Supply Bureau of Guangdong Power Grid Co., Ltd Patentee after: Rongxin Huike Electric Co.,Ltd. Address before: 523008 Dongcheng Building 239, Dongcheng District, Dongguan City, Guangdong Province Patentee before: Dongguan Power Supply Bureau of Guangdong Power Grid Co., Ltd Patentee before: RONGXIN HUIKO ELECTRIC TECHNOLOGY Co.,Ltd. |