CN203632047U - A GIS power distribution unit and main transformer connecting structure - Google Patents
A GIS power distribution unit and main transformer connecting structure Download PDFInfo
- Publication number
- CN203632047U CN203632047U CN201320821503.6U CN201320821503U CN203632047U CN 203632047 U CN203632047 U CN 203632047U CN 201320821503 U CN201320821503 U CN 201320821503U CN 203632047 U CN203632047 U CN 203632047U
- Authority
- CN
- China
- Prior art keywords
- flexible conductor
- power distribution
- main transformer
- distribution equipment
- gis power
- 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.)
- Expired - Lifetime
Links
- 239000004020 conductor Substances 0.000 claims abstract description 116
- 241000272165 Charadriidae Species 0.000 claims description 16
- 238000013016 damping Methods 0.000 abstract description 8
- 230000002401 inhibitory effect Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Images
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The utility model discloses a GIS power distribution unit and main transformer connecting structure. An overhead four-bundled flexible conductor is employed for increasing the electrical distance between a main transformer and a GIS power distribution unit. Through the increase of the electrical distance, VFTO attenuates in the transmission process, and moreover, because of the inhibiting effect of an arrester on overvoltage also, the VFTO is effectively inhibited, so that the harm brought to the main transformer by the VFTO is prevented. Besides, the operation of connecting a damping resistor to a GIS disconnecting switch in parallel is not needed and thus the engineering investment is saved.
Description
Technical field
The utility model relates to transformer station's technical field, more particularly, relates to the syndeton of a kind of GIS power distribution equipment and main transformer.
Background technology
At present GIS(Gas-insulated Metal-enclosed Switchgear, Cubicle Gas-Insulated Switchgear) power distribution equipment is little with its floor space, security reliability is high, maintenance workload is little etc., and advantage is widely used in substation project.
In ultra-high voltage transformer station, when isolating switch in the GIS power distribution equipment of 1000kV suits unloaded bus, the reason such as because the contact movement velocity of isolating switch is slow, a little less than isolating switch arc extinguishing ability, can cause that repeatedly prebreakdown or the bang between contact worn, thereby produce the very steep row ripple of wave head.And because the line between isolating switch and the circuit breaker of GIS power distribution equipment is very short, its electric capacity is very little, to there is repeatedly the catadioptric time in the row ripple producing very short in GIS power distribution equipment, so form fast transient overvoltage (Very Fast Transient Overvoltage, VFTO).Due to distance compactness between existing GIS power distribution equipment and main transformer, VFTO is delivered to main transformer via the connecting line between GIS power distribution equipment sleeve pipe and main transformer sleeve pipe, and the insulation of main transformer is threatened.
Utility model content
In view of this, the utility model provides the syndeton of a kind of GIS power distribution equipment and main transformer, effectively suppress the harm that VFTO brings main transformer, and without the damping resistance in parallel of the GIS isolating switch in GIS power distribution equipment, saved construction investment.
For achieving the above object, the utility model provides following technical scheme:
The syndeton of a kind of GIS power distribution equipment and main transformer, comprise main transformer, lightning arrester, voltage transformer and GIS power distribution equipment, described main transformer, lightning arrester, voltage transformer and GIS power distribution equipment set gradually, described main transformer adopts built on stilts quadripartion flexible conductor to be connected with described GIS power distribution equipment, and is followed successively by by sleeve pipe downlead to the built on stilts quadripartion flexible conductor of the sleeve pipe downlead of described main transformer of described GIS power distribution equipment: the first flexible conductor, the second flexible conductor, the 3rd flexible conductor and the 4th flexible conductor;
Described lightning arrester adopts herringbone syndeton to be connected by five weaknesses wire with described the 4th flexible conductor, and described voltage transformer adopts herringbone syndeton to be connected by the 6th flexible conductor with described the first flexible conductor.
Preferably, described the first flexible conductor, the second flexible conductor, the 3rd flexible conductor, the 4th flexible conductor are JLHN58K-1600 flexible conductor.
Preferably, the length range of described the first flexible conductor is 13m-14m, comprises endpoint value; The length range of described the second flexible conductor is 12m-14m, comprises endpoint value; The length range of described the 3rd flexible conductor is 14m-16m, comprises endpoint value; The length range of described the 4th flexible conductor is 12m-13m, comprises endpoint value.
Preferably, the length of described the first flexible conductor is 13.5m; The length of described the second flexible conductor is 13m; The length range of described the 3rd flexible conductor is 15m; The length range of described the 4th flexible conductor is 12.5m.
Preferably, the length of described five weaknesses wire is 10m; The length of described the 6th flexible conductor is 9m.
Preferably, the distance between the sleeve pipe of described main transformer and described lightning arrester is 9m; Distance between described lightning arrester and described voltage transformer is 16.5m; Distance between the sleeve pipe of described voltage transformer and described GIS power distribution equipment is 7.5m.
Compared with prior art, technical scheme provided by the utility model has the following advantages:
The syndeton of GIS power distribution equipment provided by the utility model and main transformer, comprises main transformer, lightning arrester, voltage transformer and GIS power distribution equipment.Described main transformer, lightning arrester, voltage transformer and GIS power distribution equipment set gradually, described main transformer adopts built on stilts quadripartion flexible conductor to be connected with described GIS power distribution equipment, and is followed successively by by sleeve pipe downlead to the built on stilts quadripartion flexible conductor of the sleeve pipe downlead of described main transformer of described GIS power distribution equipment: the first flexible conductor, the second flexible conductor, the 3rd flexible conductor and the 4th flexible conductor; Described lightning arrester adopts herringbone syndeton to be connected by five weaknesses wire with described the 4th flexible conductor, and described voltage transformer adopts herringbone syndeton to be connected by the 6th flexible conductor with described the first flexible conductor.
The GIS power distribution equipment that the utility model provides and the syndeton of main transformer, adopt built on stilts quadripartion flexible conductor that the electrical distance between main transformer and GIS power distribution equipment is widened, by increasing electrical distance, VFTO is decayed in transmitting procedure, and in conjunction with lightning arrester to superpotential inhibitory action, effectively suppressed VFTO, the harm of having avoided VFTO to bring main transformer, and without to GIS isolating switch damping resistance in parallel, save construction investment.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The schematic diagram of a kind of GIS power distribution equipment that Fig. 1 provides for the embodiment of the present application and the syndeton of main transformer.
Embodiment
As described in background, distance compactness between existing GIS power distribution equipment and main transformer, VFTO is delivered to main transformer via the connecting line between GIS power distribution equipment sleeve pipe and main transformer sleeve pipe, and the insulation of main transformer is threatened.
In addition, the GIS power distribution equipment that the southeast, the Shanxi 1000kV of transformer station power distribution equipment adopts, the GIS isolating switch in GIS power distribution equipment adopts the method restriction VFTO of damping resistance in parallel.While being GIS isolator operation, parallel resistance is utilized damping resistance restriction VFTO according to determining the running time of the contact of GIS isolating switch actual turn-on time.But the method that adopts GIS isolating switch damping resistance in parallel, has increased construction investment.
Based on this, the utility model provides the syndeton of a kind of GIS power distribution equipment and main transformer, the problems referred to above that exist to overcome prior art, comprise: main transformer, lightning arrester, voltage transformer and GIS power distribution equipment, described main transformer, lightning arrester, voltage transformer and GIS power distribution equipment set gradually, described main transformer adopts built on stilts quadripartion flexible conductor to be connected with described GIS power distribution equipment, and sleeve pipe downlead to the built on stilts quadripartion flexible conductor of the sleeve pipe downlead of described main transformer by described GIS power distribution equipment is followed successively by: the first flexible conductor, the second flexible conductor, the 3rd flexible conductor and the 4th flexible conductor,
Described lightning arrester adopts herringbone syndeton to be connected by five weaknesses wire with described the 4th flexible conductor, and described voltage transformer adopts herringbone syndeton to be connected by the 6th flexible conductor with described the first flexible conductor.
The GIS power distribution equipment that the utility model provides and the syndeton of main transformer, adopt built on stilts quadripartion flexible conductor that the electrical distance between main transformer and GIS power distribution equipment is widened, by increasing electrical distance, VFTO is decayed in transmitting procedure, and in conjunction with lightning arrester to superpotential inhibitory action, effectively suppressed VFTO, the harm of having avoided VFTO to bring main transformer, and without to GIS isolating switch damping resistance in parallel, save construction investment.
Be more than core concept of the present utility model, for above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, embodiment of the present utility model be described in detail.
A lot of details are set forth in the following description so that fully understand the utility model, but the utility model can also adopt other to be different from alternate manner described here and implement, those skilled in the art can do similar popularization without prejudice to the utility model intension in the situation that, and therefore the utility model is not subject to the restriction of following public specific embodiment.
Secondly, the utility model is described in detail in conjunction with schematic diagram, in the time that the utility model embodiment is described in detail in detail; for ease of explanation; represent that the profile of device architecture can disobey general ratio and do local amplification, and described schematic diagram is example, it should not limit the scope of the utility model protection at this.In addition in actual fabrication, should comprise, the three-dimensional space of length, width and the degree of depth.
The present embodiment provides the syndeton of a kind of GIS power distribution equipment and main transformer, as shown in Figure 1, the schematic diagram of a kind of GIS power distribution equipment providing for the embodiment of the present application and the syndeton of main transformer, comprises main transformer 1, lightning arrester 2, voltage transformer 3 and GIS power distribution equipment 4.
Wherein, main transformer 1, lightning arrester 2, voltage transformer 3 and GIS power distribution equipment 4 set gradually, and the distance between the sleeve pipe of described main transformer 1 and described lightning arrester 2 is 9m; Distance between described lightning arrester 2 and described voltage transformer 3 is 16.5m; Distance between described voltage transformer 3 and the sleeve pipe of described GIS power distribution equipment 4 is 7.5m.
Described main transformer 1 adopts built on stilts quadripartion flexible conductor to be connected with described GIS power distribution equipment 4, and is followed successively by by sleeve pipe downlead to the built on stilts quadripartion flexible conductor of the sleeve pipe downlead of described main transformer 1 of described GIS power distribution equipment 4: the first flexible conductor 11, the second flexible conductor 12, the 3rd flexible conductor 13 and the 4th flexible conductor 14.
Shown in figure 1, one end of the first flexible conductor 11 connects the sleeve pipe downlead of GIS power distribution equipment 4, the other end of the first flexible conductor 11 connects one end of the second flexible conductor 12, the other end of the second flexible conductor 12 connects one end of the 3rd flexible conductor 13, the other end of the 3rd flexible conductor 13 connects the 4th flexible conductor 14, the other end of the 4th flexible conductor 14 connects the sleeve pipe downlead of main transformer 1, adopts the auxiliary quadripartion flexible conductor of pylon structure 5 built on stilts.Wherein, described the first flexible conductor 11, the second flexible conductor 12, the 3rd flexible conductor 13, the 4th flexible conductor 14 are JLHN58K-1600 flexible conductor.
In addition, the length range of described the first flexible conductor 11 is 13m-14m, comprises endpoint value; The length range of described the second flexible conductor 12 is 12m-14m, comprises endpoint value; The length range of described the 3rd flexible conductor 13 is 14m-16m, comprises endpoint value; The length range of described the 4th flexible conductor 14 is 12m-13m, comprises endpoint value.The present embodiment is preferred, and the length of described the first flexible conductor 11 is 13.5m; The length of described the second flexible conductor 12 is 13m; The length range of described the 3rd flexible conductor 13 is 15m; The length range of described the 4th flexible conductor 14 is 12.5m.
Described lightning arrester 2 adopts herringbone syndeton to be connected by five weaknesses wire 15 with described the 4th flexible conductor 14, and described voltage transformer 3 adopts herringbone syndeton to be connected by the 6th flexible conductor 16 with described the first flexible conductor 11.
Shown in figure 1, one end of five weaknesses wire 15 is connected with lightning arrester 2, and the other end of five weaknesses wire 15 is connected with the 4th flexible conductor 14, and the 4th flexible conductor 14 and five weaknesses wire 15 are herringbone structure, and the length of five weaknesses wire 15 is 10m.The other end that one end of the 6th flexible conductor 16 connects voltage transformer 3, the six flexible conductors 16 is connected with the first flexible conductor 11, and the 6th flexible conductor 16 and the first flexible conductor 11 are herringbone structure, and the length of described the 6th flexible conductor 16 is 9m.
The GIS power distribution equipment that the embodiment of the present application provides and the syndeton of main transformer, comprise main transformer, lightning arrester, voltage transformer and GIS power distribution equipment.Described main transformer, lightning arrester, voltage transformer and GIS power distribution equipment set gradually, described main transformer adopts built on stilts quadripartion flexible conductor to be connected with described GIS power distribution equipment, and is followed successively by by sleeve pipe downlead to the built on stilts quadripartion flexible conductor of the sleeve pipe downlead of described main transformer of described GIS power distribution equipment: the first flexible conductor, the second flexible conductor, the 3rd flexible conductor and the 4th flexible conductor; Described lightning arrester adopts herringbone syndeton to be connected by five weaknesses wire with described the 4th flexible conductor, and described voltage transformer adopts herringbone syndeton to be connected by the 6th flexible conductor with described the first flexible conductor.
The GIS power distribution equipment that the present embodiment provides and the syndeton of main transformer, adopt built on stilts quadripartion flexible conductor that the electrical distance between main transformer and GIS power distribution equipment is widened, by increasing electrical distance, VFTO is decayed in transmitting procedure, and in conjunction with lightning arrester to superpotential inhibitory action, effectively suppressed VFTO, the harm of having avoided VFTO to bring main transformer, and without to GIS isolating switch damping resistance in parallel, save construction investment.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple modification of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. the syndeton of a GIS power distribution equipment and main transformer, comprise main transformer, lightning arrester, voltage transformer and GIS power distribution equipment, it is characterized in that, described main transformer, lightning arrester, voltage transformer and GIS power distribution equipment set gradually, described main transformer adopts built on stilts quadripartion flexible conductor to be connected with described GIS power distribution equipment, and is followed successively by by sleeve pipe downlead to the built on stilts quadripartion flexible conductor of the sleeve pipe downlead of described main transformer of described GIS power distribution equipment: the first flexible conductor, the second flexible conductor, the 3rd flexible conductor and the 4th flexible conductor;
Described lightning arrester adopts herringbone syndeton to be connected by five weaknesses wire with described the 4th flexible conductor, and described voltage transformer adopts herringbone syndeton to be connected by the 6th flexible conductor with described the first flexible conductor.
2. the syndeton of GIS power distribution equipment according to claim 1 and main transformer, is characterized in that, described the first flexible conductor, the second flexible conductor, the 3rd flexible conductor, the 4th flexible conductor are JLHN58K-1600 flexible conductor.
3. the syndeton of GIS power distribution equipment according to claim 1 and main transformer, is characterized in that, the length range of described the first flexible conductor is 13m-14m, comprises endpoint value; The length range of described the second flexible conductor is 12m-14m, comprises endpoint value; The length range of described the 3rd flexible conductor is 14m-16m, comprises endpoint value; The length range of described the 4th flexible conductor is 12m-13m, comprises endpoint value.
4. the syndeton of GIS power distribution equipment according to claim 3 and main transformer, is characterized in that, the length of described the first flexible conductor is 13.5m; The length of described the second flexible conductor is 13m; The length range of described the 3rd flexible conductor is 15m; The length range of described the 4th flexible conductor is 12.5m.
5. the syndeton of GIS power distribution equipment according to claim 4 and main transformer, is characterized in that, the length of described five weaknesses wire is 10m; The length of described the 6th flexible conductor is 9m.
6. the syndeton of GIS power distribution equipment according to claim 5 and main transformer, is characterized in that, the distance between the sleeve pipe of described main transformer and described lightning arrester is 9m; Distance between described lightning arrester and described voltage transformer is 16.5m; Distance between the sleeve pipe of described voltage transformer and described GIS power distribution equipment is 7.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320821503.6U CN203632047U (en) | 2013-11-27 | 2013-11-27 | A GIS power distribution unit and main transformer connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320821503.6U CN203632047U (en) | 2013-11-27 | 2013-11-27 | A GIS power distribution unit and main transformer connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203632047U true CN203632047U (en) | 2014-06-04 |
Family
ID=50818490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320821503.6U Expired - Lifetime CN203632047U (en) | 2013-11-27 | 2013-11-27 | A GIS power distribution unit and main transformer connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203632047U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104158163A (en) * | 2014-08-31 | 2014-11-19 | 华北电力大学（保定） | VFTO protection device and method for transformer in GIS substation |
| CN105024372A (en) * | 2015-07-30 | 2015-11-04 | 国网山东省电力公司经济技术研究院 | Method and device for reducing overvoltage of lightning invasion wave of open-type substation |
| CN106253124A (en) * | 2016-08-31 | 2016-12-21 | 中国电力技术装备有限公司郑州电力设计院 | 750kV transformer station innovation yi word pattern GIS arrangement |
| CN108964112A (en) * | 2017-05-19 | 2018-12-07 | 中国电力工程顾问集团华东电力设计院有限公司 | The wiring construction and its operation method of small steam turbine generator access high-voltage Auxiliary electric system |
-
2013
- 2013-11-27 CN CN201320821503.6U patent/CN203632047U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104158163A (en) * | 2014-08-31 | 2014-11-19 | 华北电力大学（保定） | VFTO protection device and method for transformer in GIS substation |
| CN104158163B (en) * | 2014-08-31 | 2017-01-18 | 华北电力大学（保定） | VFTO protection device and method for transformer in GIS substation |
| CN105024372A (en) * | 2015-07-30 | 2015-11-04 | 国网山东省电力公司经济技术研究院 | Method and device for reducing overvoltage of lightning invasion wave of open-type substation |
| CN106253124A (en) * | 2016-08-31 | 2016-12-21 | 中国电力技术装备有限公司郑州电力设计院 | 750kV transformer station innovation yi word pattern GIS arrangement |
| CN108964112A (en) * | 2017-05-19 | 2018-12-07 | 中国电力工程顾问集团华东电力设计院有限公司 | The wiring construction and its operation method of small steam turbine generator access high-voltage Auxiliary electric system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203632047U (en) | A GIS power distribution unit and main transformer connecting structure | |
| CN101685955A (en) | Base station lightning protection system | |
| CN103618266A (en) | Electrifying defect eliminating tool of drainage plate | |
| CN214176535U (en) | Tertiary distribution device of job site interim power consumption | |
| CN210863933U (en) | High GIS partial discharge online monitoring device based on wireless transmission | |
| CN204696504U (en) | A kind of high-tension switch cabinet with damping, lightning function | |
| CN203734089U (en) | Power wire coil for transformer station | |
| CN203260987U (en) | High-voltage line lightning arrester | |
| CN204905828U (en) | Overhead transmission line lightning protection device | |
| CN204258112U (en) | A kind of combined transformer | |
| CN203839151U (en) | Zinc oxide arrester without jumper | |
| Fang et al. | Study on lightning overvoltage and commutation failure in UHV AC/DC hybrid system | |
| CN103730842A (en) | High-resistance loop in transformer substation | |
| Jardini et al. | Overvoltage assessment of point-to-point vsc-based hvdc systems | |
| CN104753031A (en) | Neutral point complete-set protection device | |
| CN204547810U (en) | A kind of roof of train electric supply installation | |
| CN203632009U (en) | High impedance loop in transformer station | |
| CN202473803U (en) | Inlet type lower protective jacket for drop-out fuse | |
| CN102780176A (en) | Method for reducing insulation overhead ground wire induction voltage of alternating current transmission line | |
| CN203799779U (en) | Neutral point and shell double-grounding system for transformer | |
| CN203967529U (en) | A kind of arrangement of 220kV power distribution equipment | |
| CN203632182U (en) | Lightning protection device of 20kV overhead line | |
| CN203352118U (en) | Lightning protection device of overhead transmission line | |
| CN203596424U (en) | Cable terminal wiring apparatus | |
| CN215601015U (en) | High-voltage cable protection grounding box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: CHINA POWER ENGINEERING CONSULTING (Group) Corp. Patentee after: ELECTRIC POWER PLANNING & ENGINEERING INSTITUTE Patentee after: CENTRAL SOUTHERN CHINA ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee after: NORTHEAST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Patentee after: EAST CHINA ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Patentee after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Patentee after: Southwest Electric Power Design Institute CO., Ltd. of China Power Engineering Consulting Group Patentee after: NORTH CHINA POWER ENGINEERING CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee before: ELECTRIC POWER PLANNING & ENGINEERING INSTITUTE Patentee before: CENTRAL SOUTHERN CHINA ELECTRIC POWER DESIGN INSTITUTE, CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee before: NORTHEAST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING Group Patentee before: CHINA POWER ENGINEERING CONSULTING Group CORPORATION EAST CHINA ELECTRIC POWER DESIGN INSTITUTE Patentee before: NORTHWEST ELECTRIC POWER DESIGN INST. OF CHINA POWER ENGINEERING CONSULTING Group Patentee before: SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee before: NORTH CHINA POWER ENGINEERING CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |