CN1635641A - Superconducting saturable core fault current limiter - Google Patents
Superconducting saturable core fault current limiter Download PDFInfo
- Publication number
- CN1635641A CN1635641A CNA2003101235398A CN200310123539A CN1635641A CN 1635641 A CN1635641 A CN 1635641A CN A2003101235398 A CNA2003101235398 A CN A2003101235398A CN 200310123539 A CN200310123539 A CN 200310123539A CN 1635641 A CN1635641 A CN 1635641A
- Authority
- CN
- China
- Prior art keywords
- superconduction
- fault current
- current limiter
- winding
- windings
- 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
- 238000004804 winding Methods 0.000 claims abstract description 54
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 51
- 229910052742 iron Inorganic materials 0.000 claims abstract description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 30
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 16
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical group [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 4
- 230000001939 inductive effect Effects 0.000 abstract 3
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000033772 system development Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Classifications
-
- 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
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
This invention refers to a superconductive saturable core fault current limiter, which contains an iron core, two copper wire windings wound on iron core, the same name ends of said windings are connected and series connected to power supply network, a superconductive winding of high temperature superconductive material wound in intermediate iron column of iron core, a superconductive inductive coil series connected with said superconductive windings, a DC bias source to be an adjustable DC power supply and series connected with said superconductive windings and inductive coil to form looping, a non-metal liquid nitrogen container holding the superconductive windings and inductive coil. Said invention has simple structure, safe operation and quick response speed.
Description
Technical field
The present invention relates to a kind of short circuit current restriction technologies that is mainly used in the power transmission and distribution equipment protection, particularly a kind of superconduction saturated core fault current limiter.
Background technology
Along with rapid development of national economy, power industry is also developing rapidly, and people are growing to the demand of electric energy, and is also more and more higher to the reliability and the requirement of power supply quality of power supply simultaneously.Therefore grid contact is tight, and structure is strengthened, and looped network increases, and electrical network develops to ultra-large direction, makes the capacity of electrical network increasing.The high speed development of electric power system has caused the system short-circuit levels of current sharply to increase, and the increase of short circuit current level not only brings bigger threat to the stable operation of electrical network, and makes the rupturing capacity of original switchgear can not satisfy the requirement of system development.
The electric power system measures for limiting short-circuit current mainly contains both at home and abroad at present: (1) increases main system to the impedance between controller switching equipment, as adopting high-impedance transformer; Neutral point limits single-phase short circuit current etc. through little reactance grounded.(2) change system operation mode and come limiting short-circuit current, as cut apart bus, segmenting system and the power plant with big capacity unit is adopted unit connection etc.
Yet said method implements all certain limitation, will make voltage-regulation become difficult as adopting high-impedance transformer; Bus is cut apart in employing, segmenting system changes system operation mode and comes limiting short-circuit current, the outlet feeder number in power station is increased greatly, can increase the investment in power station so again greatly, make original very complicated power station general layout and electric outgoing line corridor more complicated simultaneously.Must seek to adapt to the method for power system development, safe and reliable, practicable restriction system short circuit current for this reason.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art and defective, a kind of superconduction saturated core fault current limiter is provided, superconductor technology is applied to limit the short circuit current of electric line, make the power consumption equipment safe operation in the electric line.The present invention compares with traditional current limiting technique, and superconduction saturated core fault current limiter integrates detection, triggering and current limliting, is present optimal current limiting technique.
For reaching above-mentioned purpose, the invention provides a kind of superconduction saturated core fault current limiter, it comprises:
One iron core is horizontal day font, is formed by stacking by the cold-reduced silicon sheet cutting;
Two copper cash windings, respectively on the iron prop of horizontal day shaped iron core both sides, the end of the same name of two copper cash windings is connected, and is serially connected in the supply network by the copper enamelled wire;
One superconduction winding, by belt material of high temperature superconduct on the middle iron prop of horizontal day shaped iron core;
One superconduction inductance coil is with described superconduction windings in series;
One direct current bias generator is adjustable DC power supply, connects with described superconduction winding and superconduction inductance coil to form the loop;
One nonmetal liquid nitrogen container is placed in described superconduction winding and superconduction inductance coil wherein.
The thickness of described silicon steel sheet is 0.30～0.35 millimeter.
The cross-sectional area of the iron prop of described horizontal day shaped iron core both sides equates.
The cross-sectional area of the middle iron prop of described horizontal day shaped iron core is the cross-sectional area sum of the iron prop of both sides.
Described belt material of high temperature superconduct is a Bi-based high-temperature superconductive strip.
Described superconduction winding is in series by sub-winding, is continuous belt material of high temperature superconduct between two sub-windings of each centering, does not have the welding joint.
Described copper cash winding is formed by connecting by subsection cylindrical formula winding.
Described superconduction inductance coil is an air core coil, is formed by the Bi-based high-temperature superconductive strip coiling.
The invention has the advantages that superconduction saturated core fault current limiter is simple in structure, and is safe and reliable to operation, response speed is fast.There is not the quench problem in superconducting coil, and repeatedly self-starting function is arranged, and can be used for the reclosing occasion.The overvoltage that produces during the line short fault is little, and is little to the dc bias source influence.This device is made up of iron-core reactor, superconduction winding and dc bias source basically, and simple in structure, technology maturation is easy to suitability for industrialized production.
Description of drawings
Fig. 1 is the operation principle schematic diagram of superconduction saturated core fault current limiter;
Fig. 2 is the structural representation of superconduction saturated core fault current limiter;
Fig. 3 is a subsection cylindrical formula winding schematic diagram;
Fig. 4 is the Ψ-I characteristic curve of superconduction saturated core fault current limiter.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with drawings and Examples.
Please refer to attached Fig. 1 and 2, be respectively the operation principle schematic diagram of superconduction saturated core fault current limiter and the structural representation of superconduction saturated core fault current limiter.For convenience of explanation and mapping, this two accompanying drawing is only represented the phase structure of superconduction saturated core fault current limiter, and for the three-phase power circuit of electric power system, each mutually all has the structure of same fault current limiter, is illustrated at this.
As shown in Figure 2, the invention provides a kind of superconduction saturated core fault current limiter, it comprises:
One iron core 4 is horizontal day font, is formed by stacking by the cold-reduced silicon sheet cutting;
Two copper cash windings 1 and 2, respectively on the iron prop 41 and 42 of horizontal day shaped iron core both sides, as shown in Figure 1, the end of the same name of two copper cash windings is connected, and is serially connected in the supply network 8 by the copper enamelled wire;
One superconduction winding 3, by belt material of high temperature superconduct on the middle iron prop 43 of horizontal day shaped iron core;
One superconduction inductance coil 5 is connected with described superconduction winding 3;
One direct current bias generator 6 is adjustable DC power supply, connects with described superconduction winding 3 and superconduction inductance coil 5 to form the loop, makes unshakable in one's determination 4 to be in degree of depth saturation condition by regulating the electric power outputting current value;
One nonmetal liquid nitrogen container 7 is placed in described superconduction winding 3 and superconduction inductance coil 5 wherein.
In order to reduce by unshakable in one's determination 4 loss, whole core construction spares of the present invention do not have closed electric loop, and guarantee the insulation at 4 each position unshakable in one's determination, to avoid because the supplementary load loss that leakage field crossing structure spare is produced and the heating of structural member.In addition, unshakable in one's determination 4 clamping screw and stretching screw all adopt low magnetic stainless steel material, to reduce supplementary load loss and the heating that produces when leakage field cuts.
The be formed by stacking thickness of unshakable in one's determination 4 silicon steel sheet of described cutting is 0.30～0.35 millimeter.
The iron prop 41 of described horizontal day shaped iron core 4 both sides and the cross-sectional area of iron prop 42 equate.
The cross-sectional area of the middle iron prop 43 of described horizontal day shaped iron core 4 is the cross-sectional area sum of the iron prop 41 and the iron prop 42 of both sides.
Described belt material of high temperature superconduct is a Bi-based high-temperature superconductive strip.
Described superconduction winding 3 is in series by sub-winding, is continuous belt material of high temperature superconduct between two sub-windings of each centering, does not have the welding joint.
As shown in Figure 3, for fear of produce overvoltage at current limliting winding two ends, described copper cash winding 1 and 2 is formed by connecting by subsection cylindrical formula winding.A is the head end of winding, and X is the tail end of winding.Face the passage that excessive connection lead and wind are arranged between two cylindrical section windings mutually.This winding construction not only has the shock-resistant characteristic of common drum type brake winding, but also has solved the higher problem of winding voltage between layers, is a kind of comparatively desirable winding construction.
Described superconduction inductance coil 5 is an air core coil, is formed by the Bi-based high-temperature superconductive strip coiling.
Ψ-I characteristic curve below in conjunction with accompanying drawing 4 superconduction saturated core fault current limiters, further specify the principle of superconduction saturated core fault current limiter fault current limiting of the present invention, as shown in Figure 4, the impedance of superconduction saturated core fault current limiter can (Ψ represents magnetic flux by Ψ-I, I represents electric current) characteristic curve obtains explanation, and 1. curve represents the magnetization curve of 4 no dc bias sources unshakable in one's determination among the figure.When | ψ |≤ψ
1The time, unshakable in one's determination 4 is unsaturated, and inductance value is bigger, i.e. L=tg β
1When | ψ | 〉=ψ
1The time, unshakable in one's determination 4 is saturated, and inductance value is less, i.e. L=tg β
23. 2. curve represent that with curve unshakable in one's determination 4 have the magnetization curve of dc bias source 6.4. curve is that curve is 2. 3. synthetic with curve.Therefore flow restricter inductance L=d ψ/dt is;
When electrical network 8 operate as normal, regulate dc bias source 6 and make 4 degree of depth unshakable in one's determination saturated, promptly be operated on the a-a ' section, the restrictor apparatus impedance is less.When electrical network 8 breaks down, promptly be operated on a-b section and a '-b ' section, former limit AC Windings electric current sharply increases, the desaturation that in one-period, replaces unshakable in one's determination, at this moment, fault current limiter has bigger transient state resistance value, thereby has limited fault current.
The present invention according to the network system of different electric pressures can the production different model superconduction saturated core fault current limiter, enumerate the superconduction saturated core fault current limiter of two kinds of models below:
Example one:
10kV/800kVar superconduction saturated core fault current limiter.
Technical indicator: rated voltage 10kV, rated current 44A, restriction electric current 220A, response time 10ms.
Need the 7.5kAm Bi-based high-temperature superconductive strip, be used to make superconduction winding 3; 816 kilograms of copper conductor materials are used to make two copper cash windings 1 and 2; Thickness is 0.3 millimeter 3208 kilograms of cold rolling no whereabouts silicon steel sheets, is used for making unshakable in one's determination 4.
Example two:
400V/800kVar superconduction saturated core fault current limiter.
Technical indicator: rated voltage 400V, rated current 1155A, restriction electric current 5775A, response time 15ms.
Need the 188kAm Bi-based high-temperature superconductive strip, be used to make superconduction winding 3; 450 kilograms of copper conductor materials are used to make two copper cash windings 1 and 2; Thickness is 0.3 millimeter 3208 kilograms of cold rolling no whereabouts silicon steel sheets, is used for making unshakable in one's determination 4.
Claims (8)
1. a superconduction saturated core fault current limiter is characterized in that, comprising:
One iron core is horizontal day font, is formed by stacking by the cold-reduced silicon sheet cutting;
Two copper cash windings, respectively on the iron prop of horizontal day shaped iron core both sides, the end of the same name of two copper cash windings is connected, and is serially connected in the supply network by the copper enamelled wire;
One superconduction winding, by belt material of high temperature superconduct on the middle iron prop of horizontal day shaped iron core;
One superconduction inductance coil is with described superconduction windings in series;
One direct current bias generator is adjustable DC power supply, connects with described superconduction winding and superconduction inductance coil to form the loop;
One nonmetal liquid nitrogen container is placed in described superconduction winding and superconduction inductance coil wherein.
2. superconduction saturated core fault current limiter according to claim 1, wherein, the thickness of described silicon steel sheet is 0.30～0.35 millimeter.
3. superconduction saturated core fault current limiter according to claim 1, wherein, the cross-sectional area of the iron prop of described horizontal day shaped iron core both sides equates.
4. superconduction saturated core fault current limiter according to claim 3, wherein, the cross-sectional area of the middle iron prop of described horizontal day shaped iron core is the cross-sectional area sum of the iron prop of both sides.
5. superconduction saturated core fault current limiter according to claim 1, wherein, described belt material of high temperature superconduct is a Bi-based high-temperature superconductive strip.
6. superconduction saturated core fault current limiter according to claim 1, wherein, described superconduction winding is in series by sub-winding, is continuous belt material of high temperature superconduct between two sub-windings of each centering, does not have the welding joint.
7. superconduction saturated core fault current limiter according to claim 1, wherein, described copper cash winding is formed by connecting by subsection cylindrical formula winding.
8. superconduction saturated core fault current limiter according to claim 1, wherein, described superconduction inductance coil is an air core coil, is formed by the Bi-based high-temperature superconductive strip coiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101235398A CN100345319C (en) | 2003-12-26 | 2003-12-26 | Superconducting saturable core fault current limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101235398A CN100345319C (en) | 2003-12-26 | 2003-12-26 | Superconducting saturable core fault current limiter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1635641A true CN1635641A (en) | 2005-07-06 |
| CN100345319C CN100345319C (en) | 2007-10-24 |
Family
ID=34844819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101235398A Expired - Lifetime CN100345319C (en) | 2003-12-26 | 2003-12-26 | Superconducting saturable core fault current limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100345319C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100385762C (en) * | 2005-12-06 | 2008-04-30 | 电子科技大学 | Composite high temperature superconductive power fault current limiter |
| CN101842865A (en) * | 2007-11-01 | 2010-09-22 | 全能智电力股份有限公司 | High voltage saturated core fault current limiter |
| CN102426896A (en) * | 2011-12-02 | 2012-04-25 | 云南电力试验研究院（集团）有限公司电力研究院 | Superconducting controlled reactor containing pulse width modulation (PWM) power control unit |
| CN102664393A (en) * | 2012-05-18 | 2012-09-12 | 广东电网公司电力科学研究院 | Short-circuit current limiting device |
| CN105529694A (en) * | 2016-02-01 | 2016-04-27 | 上海理工大学 | Saturated core-type fault current limiter capable of relieving DC impact |
| CN107069680A (en) * | 2017-04-26 | 2017-08-18 | 国电南瑞科技股份有限公司 | A kind of four winding magnetic flux restricted type fault current limiters |
| CN112018898A (en) * | 2020-09-10 | 2020-12-01 | 广东电网有限责任公司电力科学研究院 | Method and device for monitoring state of superconducting direct current limiter based on reclosing |
| CN112712960A (en) * | 2020-12-25 | 2021-04-27 | 中国科学院电工研究所 | Attenuation compensation device for superconducting joint |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2321137B (en) * | 1997-01-11 | 2000-11-15 | Gec Alsthom Ltd | Electric power transfer means |
| CN1211802A (en) * | 1997-09-18 | 1999-03-24 | 朱柏 | Superconducting current limiting device having damping coils |
| KR100285600B1 (en) * | 1998-10-20 | 2001-04-02 | 주백 | Superconducting fault current limiting device with damping element |
-
2003
- 2003-12-26 CN CNB2003101235398A patent/CN100345319C/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100385762C (en) * | 2005-12-06 | 2008-04-30 | 电子科技大学 | Composite high temperature superconductive power fault current limiter |
| CN101842865A (en) * | 2007-11-01 | 2010-09-22 | 全能智电力股份有限公司 | High voltage saturated core fault current limiter |
| CN102426896A (en) * | 2011-12-02 | 2012-04-25 | 云南电力试验研究院（集团）有限公司电力研究院 | Superconducting controlled reactor containing pulse width modulation (PWM) power control unit |
| CN102664393A (en) * | 2012-05-18 | 2012-09-12 | 广东电网公司电力科学研究院 | Short-circuit current limiting device |
| CN102664393B (en) * | 2012-05-18 | 2015-08-12 | 广东电网公司电力科学研究院 | Short circuit current current-limiting apparatus |
| CN105529694A (en) * | 2016-02-01 | 2016-04-27 | 上海理工大学 | Saturated core-type fault current limiter capable of relieving DC impact |
| CN105529694B (en) * | 2016-02-01 | 2017-12-26 | 上海理工大学 | Mitigate the saturable core type fault current limiter of direct current impact |
| CN107069680A (en) * | 2017-04-26 | 2017-08-18 | 国电南瑞科技股份有限公司 | A kind of four winding magnetic flux restricted type fault current limiters |
| CN112018898A (en) * | 2020-09-10 | 2020-12-01 | 广东电网有限责任公司电力科学研究院 | Method and device for monitoring state of superconducting direct current limiter based on reclosing |
| CN112712960A (en) * | 2020-12-25 | 2021-04-27 | 中国科学院电工研究所 | Attenuation compensation device for superconducting joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100345319C (en) | 2007-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Thuries et al. | Towards the superconducting fault current limiter | |
| EP2139088B1 (en) | Core-saturated superconductive fault current limiter and control method of the fault current limiter | |
| CN202424148U (en) | Normal conductor direct current coil-based saturated core fault current limiter | |
| CN100345319C (en) | Superconducting saturable core fault current limiter | |
| CN109617007A (en) | A kind of hybrid dc circuit breaker of superconducting current-limiting and the course of work | |
| CN101261896B (en) | A novel superconductive controllable reactor | |
| CN100440675C (en) | Quick current limiting type superconductive short circuit fault | |
| CN101707364A (en) | Self-triggering DC reactor current limiter and applications thereof | |
| CN101013625B (en) | Current-limiting reactor of electric power | |
| CN111564830B (en) | Current limiting method of transformer current limiting device based on artificial zero-crossing current limiting | |
| CN1885664A (en) | Bias bridge type short circuit current limiter | |
| CN105529694A (en) | Saturated core-type fault current limiter capable of relieving DC impact | |
| CN206991931U (en) | A kind of superconducting transformer with high grid-connected adaptability | |
| CN202332551U (en) | Novel cross magnetization direct current magnetism-assisting adjustable reactor | |
| CN204497043U (en) | The full leakage field of magnetic shunt type reclaims coaxial double winding controllable impedance reactor | |
| CN106783106A (en) | A kind of orthogonal coupled mode mixing iron core type superconductive controllable reactor | |
| CN100362720C (en) | Active superconducting direct current limiter | |
| Ahn et al. | Design, fabrication, and test of high-Tc superconducting DC reactor for inductive superconducting fault current limiter | |
| Wang et al. | Saturated iron core superconducting fault current limiter | |
| CN201549881U (en) | Self-triggered direct current reactor type current limiter | |
| CN1815839A (en) | Super-conductive fault current limiter with short-cut ring | |
| CN112018781A (en) | Intelligent transformer type controllable reactor | |
| Zhang et al. | Current limiting and recovery characteristics of an AC fast recovery superconducting fault current-limiting breaker | |
| CN1635642A (en) | Controllable resistor type superconducting fault current limiter | |
| CN2657256Y (en) | Short-circuit fault current limiter |
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 | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20180614 Granted publication date: 20071024 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20191015 Granted publication date: 20071024 |
|
| PD01 | Discharge of preservation of patent | ||
| CP03 | Change of name, title or address |
Address after: 102600 West A, floor 3, building B, No. 7, Rongchang East Street, Beijing Economic and Technological Development Zone, Daxing District, Beijing Patentee after: Beijing innopower superconductor power technology Co.,Ltd. Address before: Longsheng industrial park, 7 No. 100176 Beijing Rongchang economic and Technological Development Zone East Patentee before: Beijing Innopower Superconductor Cable Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191225 Address after: Yunda economic and Technological Development Zone in Yunnan province Kunming City 650000 West Road No. 105 Patentee after: YUNNAN ELECTRIC POWER TEST & RESEARCH INSTITUTE (GROUP) Co.,Ltd. Address before: 102600 West A, floor 3, building B, No. 7, Rongchang East Street, Beijing Economic and Technological Development Zone, Daxing District, Beijing Patentee before: Beijing innopower superconductor power technology Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071024 |
|
| CX01 | Expiry of patent term |