CN103051207B - A kind of Large Copacity current transformer water cooling module H bridge construction based on IEGT - Google Patents
A kind of Large Copacity current transformer water cooling module H bridge construction based on IEGT Download PDFInfo
- Publication number
- CN103051207B CN103051207B CN201210272186.7A CN201210272186A CN103051207B CN 103051207 B CN103051207 B CN 103051207B CN 201210272186 A CN201210272186 A CN 201210272186A CN 103051207 B CN103051207 B CN 103051207B
- Authority
- CN
- China
- Prior art keywords
- module
- framework
- water
- phase module
- unit
- 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.)
- Active
Links
Abstract
Based on a Large Copacity current transformer water cooling module H bridge construction of IEGT, it is symmetrical, comprising: boxed frame; Left phase module unit, left capacitance module are in left side front and rear portions in framework; Bypass module, voltage crowbar circuit are in the centre of front and rear portions in framework; Insulating power supply is fixed on after framework; Left discharge resistance, is fixed on framework left side below; Left water-cooled resistance radiator is fixed on left discharge resistance; Left module drive unit is connected to left phase module unit front end; Outlet pipe and water inlet pipe are transversely arranged on framework below upper and lower respectively; Left phase module water inlet is in charge of and is in charge of with left phase module water outlet; Left control unit, left power subsystem and left charhing unit, fix from front to back successively in frame left.This H bridge construction can be applicable in multiple high-voltage large-capacity current transformer, and can fill sufficient modern power electronic high-voltage large-capacity installation needs, and structure is gently simple, can batch modularized production, assembling, to debug and easy to maintenance.
Description
Technical field
The present invention relates to the current transformer H bridge construction in a kind of power electronics industry, particularly a kind of based on IEGT (Injection Enhanced Gate Transistor electron injection enhancement gate transistor) Large Copacity current transformer water cooling module H bridge construction (hereinafter referred to as H bridge construction).
Background technology
The exploitation of the energy are the marks of human progress.Wherein, very large proportion is accounted for the terminals consume of electric power energy form.Due to the great link that generating, transmission of electricity, distribution and electricity consumption etc. are power industry, in the process of each link energy transferring, all there is requirement to the quality of electric energy.Often adopting many effective measures for improving the quality of power supply, is wherein that consumption is maximum with reactive power compensator.And the current appearance due to novel high-power device, as IEGT, the high-power reactive power compensator of STATCOM is developed.
Current power grid application corollary equipment comparatively widely based on the employing of the Large Copacity current transformer of IEGT in the high-power reactive-load compensation equipment of STATCOM, H bridge is wherein Core equipment parts, according to electrical design requirement, assembled for electrical structure unit piece wherein, be arranged in fixing structure, again by the connection between structure, guarantee that the electric original paper of STATCOM equipment can normal reliable running.The structure of H bridge, in continuous improvement, to ensure the requirement of electrical design, can meet equipment to high-power integrated simultaneously, intensive development.
In the prior art, H bridge frame structure is confined to low capacity installation equipment more, and is not suitable for high pressure (35kV) Large Copacity (200Mvar), modularized production requirement.
The H bridge construction of prior art mostly is IGBT power device, and is not modular unit structure.As " a kind of multi-functional fast-switching arrangement based on cascade converter ", (application number is: 201110341235.3), only provides H-bridge circuit schematic diagram.And " high-power converter based on IGBT module parallel " (application number is: 201010624224.1), does not provide H bridge construction.
Do not see the Large Copacity current transformer water cooling module H bridge construction adopting IEGT at present." a kind of power-phase module based on IEGT " (patent No. is: ZL201010121677.2) the patent of invention structure (see Fig. 5 and Fig. 6) only having this seminar to apply for and " a kind of high-capacity H bridge power unit based on fully-controlled converter injection enhanced gate transistor (IEGT) " (patent No. is: ZL201020128033.1) utility model patent circuit theory diagrams (see figure 4) are authorized all.
The phase module of prior art comprises two IEGT devices, and each IEGT device is all parallel with fly-wheel diode, and together, middle link leads to output to two IEGT devices in series; Phase module is provided with snubber circuit, and it comprises inductance, resistance, diode and electric capacity, and diode cathode end is connected with inductance, negative pole end is connected with resistance one end, and the resistance other end is connected with inductance; The negative pole end of diode also connects electric capacity one end, and the electric capacity other end is connected with negative busbar, and the diode cathode end be connected with inductance is also connected with positive busbar.
Compared with prior art, the invention has the beneficial effects as follows:
1) this H bridge is the power cell based on high-voltage great-current wholly-controled device IEGT, there is the versatility of super Strong, flexibility and reliability, can be used as the high-voltage great-current current transformer of several functions, e.g., the reactive power compensation of 35kV ± 200Mvar STATCOM high-power; And for example, 10kV 25MW vast capacity high voltage converter;
2) this H bridge is a kind of power cell of high-voltage large-capacity water cooling module structure, and assembling is fast, convenient production in enormous quantities;
3) the phased wired in parallel mode water cooling system of this H bridge Bian, makes power device cool balanced, ensure that power system reliability of operation;
4) this H bridge construction has carried out multiple optimization, and guarantee accuracy, reasonability that electric unit connects, structure is very compact, standardization and integrated level high, volume is little, low in energy consumption, is convenient to the realization of system container cramped construction;
5) in this H bridge construction, have employed fast joint of waterpipe, can carry out when press water disconnecting or connecting, because when snap joint disconnects, snap joint seal itself, during connection, opens, voluntarily without drainage.This function can safely, any one H-bridge unit of Geng Change easily.
Summary of the invention
Technical problem to be solved by this invention, just be to provide a kind of Large Copacity current transformer water cooling module H bridge construction based on IEGT, this H bridge construction can be applicable in multiple high-voltage large-capacity current transformer, sufficient modern power electronic high-voltage large-capacity installation needs can be filled, and structure is gently simple, can batch modularized production, assembling, debugging and easy to maintenance.
Solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:
Based on a Large Copacity current transformer water cooling module H bridge construction of IEGT, it is characterized in that: structure is symmetrical, composition comprises:
Boxed frame (1);
Left phase module unit (2), is in front portion, left side in framework and is provided with A card (3-1);
Left capacitance module (5), is in left back in framework, is provided with B card (6-1);
Bypass module (4), is in centre anterior in framework and is provided with access copper bar (4-1) and picks out copper bar (4-2);
Voltage crowbar circuit (7), is in after the centre at rear portion in framework is positioned at bypass module (4);
Insulating power supply (14), is fixed on framework insulating power supply fixed head (15) below;
Left discharge resistance (17), is fixed on framework left side below;
Left water-cooled resistance radiator (16), is fixed on left discharge resistance (17);
Left module drive unit (9), is connected to described left phase module unit front end;
Outlet pipe and water inlet pipe (24 and 23), be transversely arranged on framework below upper and lower respectively;
Left phase module water inlet is in charge of (12), picks out, before causing, enter left phase module by fast joint of waterpipe outside frame left from water inlet pipe left end;
Left phase module water outlet is in charge of (13), picks out from left phase module previously by fast joint of waterpipe, causes outlet pipe left end outside frame left;
Left control unit, left power subsystem and left charhing unit, fix from front to back successively in frame left.
On the basis of the above, the present invention can also do following further improvement:
The centre of described boxed frame (1) bottom surface is provided with two longitudinal supporting plates, is provided with two apart transverse support plates below, and end face front portion is provided with a horizontal stiffener.
Described left capacitance module (5) is formed in parallel with Boards wall by two high-voltage large-capacity capacitors (5-1).
The fast joint of waterpipe of described water-cooling system is that one only can be switched on or switched off with hand, and after disconnecting, water can not overflow.
Described A card and B card are electrically connected to each other.
Described bypass module (4) is electrically connected fixing by stretching out copper bar with phase module.
Fig. 1 is STATCOM logic schematic diagram, and Fig. 2 is STATCOM H bridge water-cooling system schematic diagram, and Fig. 3 is H bridge logic schematic diagram, and Fig. 4 is H-bridge circuit schematic diagram, Fig. 5 and Fig. 6 is phase module three-dimensional structure diagram and the plane structure chart of prior art of the present invention respectively.
According to the designing requirement (see figure 1) of high-voltage large-capacity current transformer principle topological circuit, current transformer is the corresponding Large Copacity current transformer water cooling module H-bridge unit selecting several IEGT often, according to the designing requirement of current transformer principle topological circuit, H bridge joint is entered in designed system, the integral water-cooled but system principle of its current transformer H-bridge unit is shown in Fig. 2, I is total water inlet, and O is total delivery port.
H bridge (see figure 3) is primarily of two phase modules, two capacitance modules, voltage crowbar circuit, bypass module, the parts such as water cooling system and framework form, see Fig. 4, first capacitance module (C3), second capacitance module (C4) is connected in parallel on first-phase module respectively, on the connectivity port of second-phase module and positive and negative busbar, voltage crowbar circuit is connected to positive and negative busbar port, after it comprises two thyristors of reverse parallel connection and a resistance (R4) of connecting, bypass module is connected to first-phase module, on the output port of second-phase module, it comprises two antiparallel thyristors (SCR1) afterwards and connect a contactor (SCR2).
Phase module in H bridge is (see the plane graph of the schematic circuit in Fig. 4 and the IEGT phase module stereochemical structure in Fig. 5 and IEGT phase module structure, i.e. A10), be made up of (this phase module authorizes patent of invention, and the patent No. is: ZL201010121677.2) IEGT high-power pipe, diode, inductance, electric capacity, resistance, water cooling system and framework;
Accompanying drawing explanation
Fig. 1 .STATCOM logic schematic diagram;
Fig. 2 .STATCOM H bridge water-cooling system schematic diagram;
Fig. 3 .H bridge logic schematic diagram;
Fig. 4 .H bridge circuit schematic diagram;
Fig. 5 .A10 is the phased module three-dimensional structure diagram of IEGT;
Fig. 6 .A10 is the phased module flat structure chart of IEGT;
The front view of Fig. 7 .H bridge construction figure;
The rearview of Fig. 8 .H bridge construction figure;
Fig. 9 is framework schematic perspective view.
Fig. 6. in (A10): water knockout drum A22-water-filled radiator A23-diode component A24-pressing type resistance A25-insulating trip A26-butterfly spring under water knockout drum 20-diode component A21-on A11-fast joint of waterpipe A12-butterfly spring A13-insulating trip A14-metal tube A15-water-cooled disk joint A16-water-cooled buffer inductance A17-IEGT device A18-water-filled radiator A19-.
In all the other figure: 1-framework, the left phase module unit of 2-, the right phase module unit of 3-, 3-1-card A, 4-bypass module, 4-1-accesses copper bar, 4-2-picks out copper bar, the left capacitance module of 5-, 5-1-electric capacity, the right capacitance module of 6-, 6-1 card B, 7-voltage crowbar, 8-module fixed head, 9-module drive unit, the right phase module water inlet of 10-is in charge of, the right phase module water outlet of 11-is in charge of, the left phase module water inlet of 12-is in charge of, the left phase module water outlet of 13-is in charge of, 14-insulating power supply, 15-insulating power supply fixed head, 16-water-cooled resistance radiator, 17-discharge resistance, 18-water-filled radiator tube connector, 19-water-filled radiator water inlet pipe and water outlet pipe, 20-charhing unit, 21-power subsystem, 22-control unit, 23-water inlet pipe, 24-outlet pipe.
Embodiment
As shown in Fig. 7 and Fig. 8, Fig. 9, for of the present invention based on the Large Copacity current transformer water cooling module H bridge construction of IEGT, structure is symmetrical, and following symmetric part only describes left side, and composition comprises:
Boxed frame 1, the centre of boxed frame 1 bottom surface is provided with two longitudinal supporting plates, is provided with two apart transverse support plates below, and end face front portion is provided with a horizontal stiffener, see Fig. 9;
Left phase module unit 2, is in front portion, left side in framework and is provided with this component A card 3-1(figure only drawing the right, can structure is symmetrical, though can't see the left side in fact also have this component);
Left capacitance module 5, be formed in parallel by two high-voltage large-capacity capacitor 5-1 Boards wall, be in left back in framework, be provided with this component B card 6-1(figure only drawing the right, can structure be symmetrical, though can't see the left side in fact also have this component);
A card and B card are electrically connected to each other.
Bypass module (4), is in centre anterior in framework and is provided with access copper bar (4-1) and picks out copper bar (4-2);
Bypass module (4) is electrically connected fixing by stretching out copper bar with phase module;
Voltage crowbar circuit (7), is in after the centre at rear portion in framework is positioned at bypass module (4);
Insulating power supply (14), is fixed on framework insulating power supply fixed head (15) below;
Left discharge resistance 17, is fixed on framework left side below;
Left water-cooled resistance radiator (16), is fixed on left discharge resistance 17;
Left module drive unit 9, is connected to described left phase module unit front end;
Outlet pipe and water inlet pipe 24 and 23, be transversely arranged on framework below upper and lower respectively;
Left phase module water inlet is in charge of 12, picks out, before causing, enter left phase module by fast joint of waterpipe outside frame left from water inlet pipe left end;
Left phase module water outlet is in charge of 13, picks out from left phase module previously by fast joint of waterpipe, causes outlet pipe left end outside frame left;
Fast joint of waterpipe is that one only can be switched on or switched off with hand, and after disconnecting, water can not overflow.
Left control unit, left power subsystem and left charhing unit, fix from front to back successively in frame left.
H bridge construction design of the present invention, adopts frame structure, makes it the needs of the batch modularized production meeting electric unit structure completely, adopts static structure analysis to check structure.Design follows that structure is simple, convenient disassembly, safe and efficient, connect compact firm, rationally distributed, the principles such as cabling is convenient.
Claims (1)
1. based on a Large Copacity current transformer water cooling module H bridge construction of IEGT, it is characterized in that: composition comprises:
Boxed frame, left phase module unit, right phase module unit, A card, bypass module, access copper bar, pick out copper bar, left capacitance module, capacitor, right capacitance module, B card, voltage crowbar circuit, module fixed head, module drive unit, right phase module water inlet is in charge of, right phase module water outlet is in charge of, left phase module water inlet is in charge of, left phase module water outlet is in charge of, insulating power supply, insulating power supply fixed head, water-cooled resistance radiator, discharge resistance, water-filled radiator tube connector, water-filled radiator water inlet pipe and water outlet pipe, charhing unit, power subsystem, control unit, water inlet pipe and outlet pipe,
Composition structure is symmetrical, and symmetric part only describes left side, wherein:
Left phase module unit is in front portion, left side in framework and is provided with A card;
Left capacitance module is in left back in framework, is provided with B card;
Bypass module is in centre anterior in framework and is provided with access copper bar and picks out copper bar;
Voltage crowbar circuit is in after in framework, the centre at rear portion is positioned at bypass module;
Insulating power supply is fixed on framework insulating power supply fixed head below;
Left discharge resistance is fixed on framework left side below;
Left water-cooled resistance radiator is fixed on left discharge resistance;
Left module drive unit is connected to described left phase module unit front end;
Outlet pipe and water inlet pipe are transversely arranged on framework below upper and lower respectively;
Left phase module is intake to be in charge of and is picked out from water inlet pipe left end, before causing, enters left phase module by fast joint of waterpipe outside frame left;
Left phase module water outlet is in charge of and is picked out previously by fast joint of waterpipe from left phase module, causes outlet pipe left end outside frame left;
Left control unit, left power subsystem and left charhing unit are fixed from front to back successively in frame left;
The centre of described boxed frame bottom surface is provided with two longitudinal supporting plates, is provided with two apart transverse support plates below, and end face front portion is provided with a horizontal stiffener, and described left capacitance module is formed in parallel by two high-voltage large-capacity capacitor Boards wall;
Described fast joint of waterpipe is that one only can be switched on or switched off with hand, and after disconnecting, water can not overflow, and described A card and B card are electrically connected to each other, and described bypass module is electrically connected fixing by copper bar with left and right phase module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210272186.7A CN103051207B (en) | 2012-07-31 | 2012-07-31 | A kind of Large Copacity current transformer water cooling module H bridge construction based on IEGT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210272186.7A CN103051207B (en) | 2012-07-31 | 2012-07-31 | A kind of Large Copacity current transformer water cooling module H bridge construction based on IEGT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103051207A CN103051207A (en) | 2013-04-17 |
| CN103051207B true CN103051207B (en) | 2015-09-16 |
Family
ID=48063739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210272186.7A Active CN103051207B (en) | 2012-07-31 | 2012-07-31 | A kind of Large Copacity current transformer water cooling module H bridge construction based on IEGT |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103051207B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103260375B (en) * | 2013-04-22 | 2016-01-13 | 五力机电科技（昆山）有限公司 | Capacitance-resistance module |
| CN103683857B (en) * | 2013-12-13 | 2015-12-30 | 荣信电力电子股份有限公司 | The direct current draw-out power supply of IEGT power model |
| CN110138191A (en) * | 2018-02-02 | 2019-08-16 | 荣信汇科电气技术有限责任公司 | The error protection and shunting device of modular multi-level converter power module |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101001044A (en) * | 2007-01-04 | 2007-07-18 | 冶金自动化研究设计院 | High-tension integral gate change transistor three-level frequency-converter power cabinet |
| CN201450442U (en) * | 2009-07-14 | 2010-05-05 | 国网电力科学研究院 | Single bridge arm water-cooling current transformer device |
| CN101702572A (en) * | 2009-11-11 | 2010-05-05 | 大全电气有限公司 | Half-bridge power unit for wind-powered electricity generation |
| CN101795064A (en) * | 2010-03-11 | 2010-08-04 | 荣信电力电子股份有限公司 | Power phase module based on IEGT |
| CN101877530A (en) * | 2010-03-11 | 2010-11-03 | 荣信电力电子股份有限公司 | Fully-controlled converter injection enhanced gate transistor (IEGT)-based high-capacity H bridge power unit |
| CN201789411U (en) * | 2010-03-11 | 2011-04-06 | 荣信电力电子股份有限公司 | High-capacity H bridge power unit based on fully controlled type converter IEGT (Injection Enhanced Gate Transistor) |
| CN102136730A (en) * | 2011-01-28 | 2011-07-27 | 中电普瑞科技有限公司 | Movable-type static synchronous compensator with compact structure design |
| CN102437714A (en) * | 2011-12-29 | 2012-05-02 | 徐州中矿大传动与自动化有限公司 | Three-level transducer water-cooling heat-radiating structure |
| CN202840972U (en) * | 2012-07-31 | 2013-03-27 | 广东电网公司东莞供电局 | IEGT-based high-capacity converter water cooling modularization H-bridge structure |
-
2012
- 2012-07-31 CN CN201210272186.7A patent/CN103051207B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101001044A (en) * | 2007-01-04 | 2007-07-18 | 冶金自动化研究设计院 | High-tension integral gate change transistor three-level frequency-converter power cabinet |
| CN201450442U (en) * | 2009-07-14 | 2010-05-05 | 国网电力科学研究院 | Single bridge arm water-cooling current transformer device |
| CN101702572A (en) * | 2009-11-11 | 2010-05-05 | 大全电气有限公司 | Half-bridge power unit for wind-powered electricity generation |
| CN101795064A (en) * | 2010-03-11 | 2010-08-04 | 荣信电力电子股份有限公司 | Power phase module based on IEGT |
| CN101877530A (en) * | 2010-03-11 | 2010-11-03 | 荣信电力电子股份有限公司 | Fully-controlled converter injection enhanced gate transistor (IEGT)-based high-capacity H bridge power unit |
| CN201789411U (en) * | 2010-03-11 | 2011-04-06 | 荣信电力电子股份有限公司 | High-capacity H bridge power unit based on fully controlled type converter IEGT (Injection Enhanced Gate Transistor) |
| CN102136730A (en) * | 2011-01-28 | 2011-07-27 | 中电普瑞科技有限公司 | Movable-type static synchronous compensator with compact structure design |
| CN102437714A (en) * | 2011-12-29 | 2012-05-02 | 徐州中矿大传动与自动化有限公司 | Three-level transducer water-cooling heat-radiating structure |
| CN202840972U (en) * | 2012-07-31 | 2013-03-27 | 广东电网公司东莞供电局 | IEGT-based high-capacity converter water cooling modularization H-bridge structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103051207A (en) | 2013-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104052079A (en) | Electric energy feedback type electronic load | |
| CN103915856A (en) | Base station grid connected-charging photovoltaic micro-inverter system and control method thereof | |
| CN103051207B (en) | A kind of Large Copacity current transformer water cooling module H bridge construction based on IEGT | |
| CN201766370U (en) | Modular power unit used for high voltage chain static reactive generator | |
| CN203339972U (en) | Sliding-rail type IGBT water-cooling power module | |
| CN203180545U (en) | Energy storage deflector for liquid flow battery | |
| CN203104303U (en) | Large-power photovoltaic inverter | |
| CN202373976U (en) | Active filtering device | |
| CN202840972U (en) | IEGT-based high-capacity converter water cooling modularization H-bridge structure | |
| CN203166346U (en) | Wind energy converter and main power cabinet thereof | |
| CN103401437A (en) | IGBT converter chopping module | |
| CN104780749A (en) | Insulation shielding supporting plate and stacked power module | |
| CN208806749U (en) | A kind of converter module | |
| CN207097919U (en) | No-welding battery modules and no-welding battery module system | |
| CN208046437U (en) | A kind of power cell and current transformer of current transformer | |
| CN109884531A (en) | A kind of formation of Li-ion batteries volume test power supply device | |
| CN108336744A (en) | A kind of static reactive generator device with photovoltaic generation | |
| CN208862384U (en) | A kind of low-voltage capacitance compensating cabinet | |
| CN203537259U (en) | Five-level single-phase photovoltaic grid-connected inverter | |
| CN202997581U (en) | Power module of high-voltage chain type static var generator | |
| CN207530696U (en) | A kind of water cooling (PCC) power of high-power double-feed current transformer | |
| CN203537261U (en) | Seven-level single-phase photovoltaic grid-connected inverter | |
| CN202142867U (en) | Power unit structure | |
| CN207765963U (en) | A kind of three level low-pressure reactive compensation power modules | |
| CN205141674U (en) | Dynamic voltage restorer of reactive power and active power circuit block design |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 523008, 239, Dongcheng building, Dongcheng District, Guangdong, Dongguan Co-patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF GUANGDONG POWER GRID Co.,Ltd. Patentee after: GUANGDONG POWER GRID Co.,Ltd. DONGGUAN POWER SUPPLY BUREAU Co-patentee after: MONTNETS RONGXIN TECHNOLOGY GROUP CO.,LTD. Address before: 523008, 239, Dongcheng building, Dongcheng District, Guangdong, Dongguan Co-patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF GUANGDONG POWER GRID Corp. Patentee before: Dongguan Power Supply Bureau,Guangdong Power Grid Corporation Co-patentee before: RONGXIN POWER ELECTRONIC Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200810 Address after: 523008 main mountain range, Dongcheng District, Guangdong, Dongguan Co-patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF GUANGDONG POWER GRID Co.,Ltd. Patentee after: GUANGDONG POWER GRID Co.,Ltd. DONGGUAN POWER SUPPLY BUREAU Co-patentee after: RONGXIN HUIKO ELECTRIC TECHNOLOGY Co.,Ltd. Address before: 523008, 239, Dongcheng building, Dongcheng District, Guangdong, Dongguan Co-patentee before: Electric Power Research Institute of Guangdong Power Grid Co.,Ltd. Patentee before: GUANGDONG POWER GRID Co.,Ltd. DONGGUAN POWER SUPPLY BUREAU Co-patentee before: MONTNETS RONGXIN TECHNOLOGY GROUP Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 523008 Vortex Ridge in Dongcheng District, Dongguan City, Guangdong Province Patentee after: GUANGDONG POWER GRID Co.,Ltd. DONGGUAN POWER SUPPLY BUREAU Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF GUANGDONG POWER GRID Co.,Ltd. Patentee after: Rongxin Huike Electric Co.,Ltd. Address before: 523008 Vortex Ridge in Dongcheng District, Dongguan City, Guangdong Province Patentee before: GUANGDONG POWER GRID Co.,Ltd. DONGGUAN POWER SUPPLY BUREAU Patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF GUANGDONG POWER GRID Co.,Ltd. Patentee before: RONGXIN HUIKO ELECTRIC TECHNOLOGY Co.,Ltd. |