CN108630412A - A kind of transformer - Google Patents
A kind of transformer Download PDFInfo
- Publication number
- CN108630412A CN108630412A CN201810426162.XA CN201810426162A CN108630412A CN 108630412 A CN108630412 A CN 108630412A CN 201810426162 A CN201810426162 A CN 201810426162A CN 108630412 A CN108630412 A CN 108630412A
- Authority
- CN
- China
- Prior art keywords
- transformer
- winding
- primary side
- side winding
- equalizing
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The invention discloses a kind of transformers, including：At least one transformer subelement, transformer subelement include：Primary side winding and vice-side winding；The primary side compensative winding being in parallel with primary side winding, primary side compensative winding and vice-side winding are set in same iron core column；And/or the secondary side compensative winding being in parallel with vice-side winding, secondary side compensative winding and primary side winding are set in same iron core column.By the way that the secondary side compensative winding being in parallel with vice-side winding is arranged in the iron core column of primary side winding, or the primary side compensative winding that setting is in parallel with primary side winding in the iron core column of vice-side winding, or the secondary side compensative winding that setting is in parallel with vice-side winding in the iron core column of primary side winding simultaneously, and the primary side compensative winding that setting is in parallel with primary side winding in the iron core column of vice-side winding, it can reduce from primary side winding, and/or the line of magnetic induction revealed in iron core column where vice-side winding, to, the transformer magnetic coupling properties can be improved, promote the working efficiency of transformer.
Description
Technical field
The present invention relates to electrical equipment technical fields, and in particular to a kind of transformer.
Background technology
Power transformer is one of most common equipment of electric system, and the voltage being mainly used between different voltages grade becomes
It changes, the power transmission before electric system, the current transformation etc. between different transmission line capability systems.Transformer utilizes electromagnetic induction
Principle changes alternating voltage, and main member is primary coil, secondary coil and iron core, wherein the effect of iron core is reinforcement two
Magnetic coupling between a coil.In the prior art, in order to reduce in iron vortex and magnetic hystersis loss, iron core is by the silicon steel plate stacking painted
It forms, there is no the contact of electricity, coil to be coiled by insulated copper wire or aluminum steel between two coils, a coil is set around the one of iron core
Side is simultaneously connected with AC power, is primary coil；Another coil is set around the another side on iron core and is connected with electric appliance,
For secondary coil.But the leakage field phenomenon of above-mentioned transformer in the prior art is still more serious, transformer it is less efficient.
Invention content
The technical problem to be solved in the present invention is that the magnetic coupling properties of transformer in the prior art are poor, less efficient
The problem of.
For this purpose, the present invention provides a kind of transformers, including：At least one transformer subelement, transformer subelement packet
It includes：Primary side winding and vice-side winding；The primary side compensative winding being in parallel with primary side winding, primary side compensative winding and vice-side winding are set
It is placed in same iron core column；And/or the secondary side compensative winding being in parallel with vice-side winding, secondary side compensative winding and primary side winding
It is set in same iron core column.
Optionally, transformer subelement is at least two；Wherein, the vice-side winding of a transformer subelement and adjacent change
The primary side winding of depressor subelement is connected；Transformer further includes：At least two pressure-equalizing devices, pressure-equalizing device and transformer are single
Member is arranged in a one-to-one correspondence；One end of pressure-equalizing device is connected with the input terminal of transformer subelement, and the other end and transformer are single
The output end of member is connected.
Optionally, the primary side winding of first order transformer subelement is the input terminal of transformer, afterbody transformer
The vice-side winding of unit is the output end of transformer.
Optionally, pressure-equalizing device includes equalizing capacitance and equalizing resistance, and equalizing capacitance and equalizing resistance are connected.
Optionally, pressure-equalizing device includes equalizing capacitance and equalizing resistance, and equalizing capacitance and equalizing resistance are in parallel.
Optionally, equalizing capacitance includes at least one of：One capacitance；Multiple series capacitances；Multiple shunt capacitances；It is more
The capacitance that a connection in series-parallel is combined.
Optionally, equalizing resistance includes at least one of：One resistance；Multiple series resistances；Multiple parallel resistances；It is more
The resistance that a connection in series-parallel is combined.
Optionally, the iron core column of transformer subelement is degree of lip-rounding iron core column, and primary side winding and secondary side compensative winding are set to
On one side or in the iron core column on adjacent both sides, vice-side winding and primary side compensative winding are set to and primary side winding and secondary side compensative winding
On opposite one side or both sides iron core column.
Optionally, the no-load voltage ratio of transformer subelement is 1：1,1：N or n：1.
Technical solution provided by the invention, has the following advantages that：
1, transformer provided by the invention, including：At least one transformer subelement, transformer subelement include：Primary side
Winding and vice-side winding；The primary side compensative winding being in parallel with primary side winding, primary side compensative winding and vice-side winding are set to together
In one iron core column；And/or the secondary side compensative winding being in parallel with vice-side winding, secondary side compensative winding and primary side winding are set to
In same iron core column.By the way that the secondary side compensative winding being in parallel with vice-side winding is arranged in the iron core column of primary side winding, it is used for
It is coupled together with primary side winding with vice-side winding, reduces the line of magnetic induction revealed from iron core column where primary side winding；Or
The primary side compensative winding that setting is in parallel with primary side winding in the iron core column of vice-side winding, be used for and primary side winding together with secondary side
Winding is coupled together, reduces the line of magnetic induction revealed from iron core column where vice-side winding；Or simultaneously in the iron of primary side winding
The secondary side compensative winding that setting is in parallel with vice-side winding on stem, and setting and primary side winding in the iron core column of vice-side winding
The primary side compensative winding being in parallel, while reducing from the line of magnetic induction revealed in iron core column where primary side winding and vice-side winding,
Thus, it is possible to improve the transformer magnetic coupling properties, the working efficiency of transformer is promoted.
2, transformer provided by the invention, transformer subelement are at least two；Wherein, the pair of a transformer subelement
Side winding is connected with the primary side winding of adjacent transformers subelement；Transformer further includes：At least two pressure-equalizing devices, are pressed
It sets and is arranged in a one-to-one correspondence with transformer subelement；One end of pressure-equalizing device is connected with the input terminal of transformer subelement, another
End is connected with the output end of transformer subelement.By the way that two or more transformer subelements are arranged, and make a transformer
The vice-side winding of subelement is connected with the primary side winding of adjacent transformers subelement, each transformer subelement is allow to make
While being independent transformer use, the voltage class of transformer subelement can kept lower, pass through increasing
Add the quantity of transformer subelement to increase or decrease voltage class, realize the extension of the transformer different voltages grade, in addition, also
Different transformer subelements can be selected to cascade quantity according to the height of voltage class, thus, it is possible to by reducing each become
The design difficulty of depressor subelement reduces the design difficulty of the transformer, simultaneously as the voltage etc. of each transformer subelement
Grade is relatively low, additionally it is possible to which reduce the transformer is dielectrically separated from design difficulty, increases the isolation reliability of the transformer, reaches high electricity
Pressure isolation needs.
In addition, the pressure-equalizing device being connected respectively with the input terminal of transformer subelement and output end by the way that both ends are arranged,
Multiple transformer subelements can be made to be pressed under high potential, especially when the transformer has multiple transformer subelements,
Can solve the influence due to space stray parameter and transformer sub-unit structure registration property, caused by multiple time variant voltages it is single
The voltage's distribiuting of member is uneven, and the transformer subelement in outlet side divides highest, the transformer subelement partial pressure of input side
It is minimum, to be easy to cause the problem of insulation breakdown occurs when the higher transformer subelement of partial pressure is run under high pressure, improve
The stability of the transformer.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of circuit theory schematic diagram of transformer provided in an embodiment of the present invention；
Fig. 2 is the circuit theory schematic diagram of the transformer subelement in a kind of transformer provided in an embodiment of the present invention；
Fig. 3 is a kind of circuit theory schematic diagram of the pressure-equalizing device in a kind of transformer provided in an embodiment of the present invention；
Fig. 4 is another circuit theory schematic diagram of the pressure-equalizing device in a kind of transformer provided in an embodiment of the present invention；
Reference sign：
1- transformer subelements；11- primary side windings；12- vice-side windings；13- primary side compensative windings；14- pairs side compensation around
Group；2- pressure-equalizing devices；21- equalizing capacitances；22- equalizing resistances.
Specific implementation mode
The technical solution of the embodiment of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment be a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
The every other embodiment that logical technical staff is obtained without making creative work belongs to what the present invention protected
Range.
In the description of the embodiment of the present invention, it should be noted that term "center", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of the description embodiment of the present invention and simplifies to describe, not indicating or implying the indicated device or element must have
There is specific orientation, with specific azimuth configuration and operation, therefore is not considered as limiting the invention.In addition, term " the
One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.
In the description of the embodiment of the present invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can also be the connection inside two elements, can be wirelessly connected, can also be wired connection.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in embodiments of the present invention can be understood with concrete condition.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can be combined with each other at conflict.
A kind of transformer is present embodiments provided, it is shown as depicted in figs. 1 and 2, including：At least one transformer subelement
1, transformer subelement 1 includes：Primary side winding 11 and vice-side winding 12；The primary side compensative winding being in parallel with primary side winding 11
13, primary side compensative winding 13 and vice-side winding 12 are set in same iron core column；And/or the pair being in parallel with vice-side winding 12
Side compensative winding 14, secondary side compensative winding 14 and primary side winding 11 are set in same iron core column.
In the present embodiment, the iron core column of transformer subelement 1 be degree of lip-rounding iron core column, primary side winding 11 and the compensation of secondary side around
Group 14 is set on one side or in the iron core column on adjacent both sides, vice-side winding 12 and primary side compensative winding 13 is set to and primary side winding
On 11 one side or both sides iron core column opposite with secondary side compensative winding 14.In the present embodiment, the iron core column of transformer subelement 1
Can also be annular core column or U-iron stem, primary side winding 11 and secondary side compensative winding 14 are set to one end of iron core column,
Vice-side winding 12 and primary side compensative winding 13 are set to the other end of iron core column.
Transformer provided in this embodiment is in parallel by being arranged in the iron core column of primary side winding 11 with vice-side winding 12
Secondary side compensative winding 14 reduce where primary side winding 11 for being coupled together with primary side winding 11 with vice-side winding 12
The line of magnetic induction of iron core column leakage；Or setting is mended with the primary side that primary side winding 11 is in parallel in the iron core column of vice-side winding 12
Winding 13 is repaid, for being coupled together with vice-side winding 12 together with primary side winding 11, is reduced from 12 place iron core of vice-side winding
The line of magnetic induction of column leakage；Or the secondary side benefit that setting is in parallel with vice-side winding 12 in the iron core column of primary side winding 11 simultaneously
Winding 14, and the primary side compensative winding 13 that setting is in parallel with primary side winding 11 in the iron core column of vice-side winding 12 are repaid, simultaneously
The line of magnetic induction revealed from 12 place iron core column of primary side winding 11 and vice-side winding is reduced, thus, it is possible to improve the transformer
Magnetic coupling properties promote the working efficiency of transformer.
In an alternate embodiment of the invention, as shown in Figure 1, transformer subelement 1 is at least two；Wherein, transformer
The vice-side winding 12 of unit 1 is connected with the primary side winding 11 of adjacent transformers subelement 1；Transformer further includes：At least two
Pressure-equalizing device 2, pressure-equalizing device 2 are arranged in a one-to-one correspondence with transformer subelement 1；One end of pressure-equalizing device 2 and transformer subelement 1
Input terminal be connected, the other end is connected with the output end of transformer subelement 1.
In the present embodiment, the primary side winding 11 of first transformer subelement 1 is the input terminal of transformer, the last one
The vice-side winding 12 of transformer subelement 1 is the output end of transformer, if the withstanding voltage grade of each transformer subelement 1 is
U0, then the pressure resistance of the transformer with N number of transformer subelement 1 is then NU0, in a particular embodiment, transformer subelement 1
No-load voltage ratio can be 1：1,1：N or n：1, therefore, the transformation can be expanded by the transformer subelement 1 of the different no-load voltage ratios of selection
The expansible voltage range of device enables the voltage class of the transformer down to several kilovolts, up to hundreds of kilovolts.
In the present embodiment, as shown in figure 3, pressure-equalizing device 2 includes equalizing capacitance 21 and equalizing resistance 22, equalizing capacitance 21
It connects with equalizing resistance 22.In a particular embodiment, equalizing capacitance 21 could be provided as a capacitance or multiple series electricals
Hold any one of the capacitance that either multiple shunt capacitances or multiple connection in series-parallel are combined, it specifically, can be by selecting not
Capacitance with capacitive reactance meets capacitive reactance requirement of the pressure-equalizing device 2 to equalizing capacitance 21 under different connection types.In specific embodiment
In, the capacitive reactance of equalizing capacitance 21 carries out really according to the voltage class of transformer subelement 1 and the quantity of transformer subelement 1
It is fixed.In a particular embodiment, equalizing resistance 22 could be provided as a resistance either multiple series resistances or multiple parallel connections
Any one of the resistance that resistance or multiple connection in series-parallel are combined specifically can be by selecting the resistance of different resistance values full
Resistance value requirement of the pressure-equalizing device 2 to equalizing resistance 22 under foot difference connection type.In the present embodiment, when the pressure-equalizing device
2 when being multiple, and the capacitive reactance of the equalizing capacitance 21 in multiple pressure-equalizing devices 2 is equal, the equalizing resistance 22 in multiple pressure-equalizing devices 2
Resistance value is equal.
Transformer provided in this embodiment by the way that two or more transformer subelements 1 are arranged, and makes transformer
The vice-side winding 12 of unit 1 is connected with the primary side winding 11 of adjacent transformers subelement 1, makes each transformer subelement 1
While being used as independent transformer, the voltage class of transformer subelement 1 can kept lower,
Quantity by increasing transformer subelement 1 increases or decreases voltage class, realizes the extension of the transformer different voltages grade,
Further, it is also possible to according to the height of voltage class, different transformer subelements 1 is selected to cascade quantity, thus, it is possible to pass through drop
The design difficulty of low each transformer subelement 1 reduces the design difficulty of the transformer, simultaneously as each transformer subelement
1 voltage class is relatively low, additionally it is possible to which reduce the transformer is dielectrically separated from design difficulty, and the isolation for increasing the transformer is reliable
Property, reach high-voltage isolating needs.
In addition, the pressure-equalizing device being connected respectively with the input terminal of transformer subelement 1 and output end by the way that both ends are arranged
2, multiple transformer subelements 1 can be made to be pressed under high potential, especially when the transformer has multiple transformer subelements 1
When, the influence due to 1 respective outer side edges characteristic of space stray parameter and transformer subelement can be solved, caused by cause multiple changes
The voltage's distribiuting of voltage subelement is uneven, and the transformer subelement 1 in outlet side divides highest, transformer of input side
Unit 1 divides minimum, insulation breakdown occurs asks to be easy to cause when on high-tension side transformer subelement 1 is run under high pressure
Topic, improves the stability of the transformer.
In an alternate embodiment of the invention, as shown in figure 4, pressure-equalizing device 2 includes equalizing capacitance 21 and equalizing resistance 22, equal piezoelectricity
Hold 21 and 22 parallel connection of equalizing resistance.In a particular embodiment, equalizing capacitance 21 could be provided as a capacitance or multiple series connection
Capacitance any one of the capacitance that either multiple shunt capacitances or multiple connection in series-parallel are combined specifically can pass through selection
The capacitance of different capacitive reactances meets capacitive reactance requirement of the pressure-equalizing device 2 to equalizing capacitance 21 under different connection types.It is being embodied
In example, the capacitive reactance of equalizing capacitance 21 carries out really according to the voltage class of transformer subelement 1 and the quantity of transformer subelement 1
It is fixed.In a particular embodiment, equalizing resistance 22 could be provided as a resistance either multiple series resistances or multiple parallel connections
Any one of the resistance that resistance or multiple connection in series-parallel are combined specifically can be by selecting the resistance of different resistance values full
Resistance value requirement of the pressure-equalizing device 2 to equalizing resistance 22 under foot difference connection type.In the present embodiment, when the pressure-equalizing device
2 when being multiple, and the capacitive reactance of the equalizing capacitance 21 in multiple pressure-equalizing devices 2 is equal, the equalizing resistance 22 in multiple pressure-equalizing devices 2
Resistance value is equal.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (9)
1. a kind of transformer, which is characterized in that including：
At least one transformer subelement (1), the transformer subelement (1) include：
Primary side winding (11) and vice-side winding (12)；
The primary side compensative winding (13) being in parallel with the primary side winding (11), the primary side compensative winding (13) and the secondary side
Winding (12) is set in same iron core column；And/or
The secondary side compensative winding (14) being in parallel with the vice-side winding (12), the pair side compensative winding (14) and the primary side
Winding (11) is set in same iron core column.
2. transformer according to claim 1, which is characterized in that the transformer subelement (1) is at least two；Its
In, the primary side winding of the vice-side winding (12) of a transformer subelement (1) and the adjacent transformer subelement (1)
(11) it is connected；
The transformer further includes：
At least two pressure-equalizing devices (2), the pressure-equalizing device (2) are arranged in a one-to-one correspondence with the transformer subelement (1)；It is described
One end of pressure-equalizing device (2) is connected with the input terminal of the transformer subelement (1), the other end and the transformer subelement
(1) output end is connected.
3. transformer according to claim 2, which is characterized in that the primary side of transformer subelement (1) described in the first order around
Group (11) is the input terminal of the transformer, and the vice-side winding (12) of transformer subelement (1) described in afterbody is the change
The output end of depressor.
4. according to claim 1-3 any one of them transformers, which is characterized in that the pressure-equalizing device (2) includes equal piezoelectricity
Hold (21) and equalizing resistance (22), the equalizing capacitance (21) and the equalizing resistance (22) series connection.
5. according to claim 1-3 any one of them transformers, which is characterized in that the pressure-equalizing device (2) includes equal piezoelectricity
Hold (21) and equalizing resistance (22), the equalizing capacitance (21) and the equalizing resistance (22) are in parallel.
6. transformer according to claim 4 or 5, which is characterized in that the equalizing capacitance (21) include it is following at least it
One：
One capacitance；
Multiple series capacitances；
Multiple shunt capacitances；
The capacitance that multiple connection in series-parallel are combined.
7. according to claim 4-6 any one of them transformers, which is characterized in that the equalizing resistance (22) include with down toward
It is one of few：
One resistance；
Multiple series resistances；
Multiple parallel resistances；
The resistance that multiple connection in series-parallel are combined.
8. transformer according to claim 7, which is characterized in that the iron core column of the transformer subelement (1) is the degree of lip-rounding
Iron core column, the primary side winding (11) and the secondary side compensative winding (14) are set on one side or in the iron core column on adjacent both sides,
The vice-side winding (12) and the primary side compensative winding (13) are set to be compensated with the primary side winding (11) and the secondary side
On the opposite one side of winding (14) or both sides iron core column.
9. transformer according to claim 8, which is characterized in that the no-load voltage ratio of the transformer subelement (1) is 1：1,1：n
Or n：1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810426162.XA CN108630412A (en) | 2018-05-07 | 2018-05-07 | A kind of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810426162.XA CN108630412A (en) | 2018-05-07 | 2018-05-07 | A kind of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108630412A true CN108630412A (en) | 2018-10-09 |
Family
ID=63695514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810426162.XA Pending CN108630412A (en) | 2018-05-07 | 2018-05-07 | A kind of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108630412A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599258A (en) * | 2018-11-14 | 2019-04-09 | 全球能源互联网研究院有限公司 | A kind of high voltage isolating transformer |
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| CN104584154B (en) * | 2012-08-23 | 2017-07-18 | 雷比诺电力系统 | Including covering same a part of first coil winding of magnetic core member and the coiled electric device of second coil winding |
| CN107134358A (en) * | 2016-02-26 | 2017-09-05 | 艾默生网络能源有限公司 | A kind of inductance winding method and device |
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| US20100243912A1 (en) * | 2009-03-25 | 2010-09-30 | Twin Creeks Technologies, Inc. | Isolation circuit for transmitting ac power to a high-voltage region |
| CN102881412A (en) * | 2011-07-12 | 2013-01-16 | 李贵祥 | Energy-generation transformer |
| JP2013115298A (en) * | 2011-11-30 | 2013-06-10 | Denso Corp | Composite magnetic component |
| CN104584154B (en) * | 2012-08-23 | 2017-07-18 | 雷比诺电力系统 | Including covering same a part of first coil winding of magnetic core member and the coiled electric device of second coil winding |
| CN103501116A (en) * | 2013-09-24 | 2014-01-08 | 许继电气股份有限公司 | Power supply device of high-voltage direct current electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599258A (en) * | 2018-11-14 | 2019-04-09 | 全球能源互联网研究院有限公司 | A kind of high voltage isolating transformer |
| WO2020098750A1 (en) * | 2018-11-14 | 2020-05-22 | 全球能源互联网研究院有限公司 | High-voltage isolation transformer |
| CN109599258B (en) * | 2018-11-14 | 2021-12-21 | 全球能源互联网研究院有限公司 | High-voltage isolation transformer |
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Address after: 102209 18 Riverside Avenue, Changping District science and Technology City, Beijing Applicant after: Global energy Internet Institute, Inc. Applicant after: State Grid Corporation of China Address before: 102209 18 Riverside Avenue, Changping District science and Technology City, Beijing Applicant before: Global energy Internet Institute, Inc. Applicant before: State Grid Corporation of China |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181009 |