CN108200758A - A kind of ultra-high voltage converter station valve Room double layer screen cage - Google Patents
A kind of ultra-high voltage converter station valve Room double layer screen cage Download PDFInfo
- Publication number
- CN108200758A CN108200758A CN201810103576.9A CN201810103576A CN108200758A CN 108200758 A CN108200758 A CN 108200758A CN 201810103576 A CN201810103576 A CN 201810103576A CN 108200758 A CN108200758 A CN 108200758A
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- Prior art keywords
- internal layer
- cage
- layer
- network framework
- steel wire
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
Abstract
The invention discloses a kind of ultra-high voltage converter station valve Room double layer screen cages.It is double-layer structure；Including internal layer screening cage, outer shield cage；Outer shield cage includes cover wire net, cover wire network framework, and cover wire network framework includes outer top crossbeam, outer bottom longeron and outer bottom crossbeam；Cover wire network framework connects into a conductor by outer layer copper stranded conductor, and cover wire network framework is grounded main line by outer shield cage and is connect with the earth；Internal layer screening cage includes steel wire of internal layer net, checkered steel plate and steel wire of internal layer network framework, and steel wire of internal layer network framework includes internal layer top cross-bar, two heel post of internal layer, internal layer side crossbeam and internal layer base longerons；Steel wire of internal layer network framework connects into a conductor by internal layer copper stranded conductor, and steel wire of internal layer network framework is grounded main line by internal layer screening cage and is connect with the earth；Internal layer screening cage is connected with outer shield cage by insulator.The present invention has the advantages that improve to making an inspection tour people and equipment protection effect in aisle in the valve Room.
Description
Technical field
The present invention relates to DC transmission engineering technical fields, and more specifically above it is that a kind of ultra-high voltage converter station valve Room is double-deck
Screening cage.
Background technology
There are a large amount of high voltage electric equipments in high voltage direct current transmission project converter station valve hall, when equipment is run, run people
Member needs to enter valve Room aisle progress walkaround inspection；To prevent the shadow that high voltage electric field generates operations staff and its equipment in the valve Room
It rings, and the electromagnetic wave that high voltage electric equipment is avoided to send out can have an impact the equipment of tour personnel, generally maked an inspection tour in the valve Room
Aisle surrounding setting steel wire screening cage.
In 1100kV current conversion stations, voltage class than previous engineering higher, high voltage electric field to the threat bigger of people and equipment,
1100kV converter station valve halls make an inspection tour aisle as using single layer of wires net screening cage, if outer shield cage imperfect earth is good, outer layer screen
A potential can be induced by covering cage, and tour personnel is in direct contact the screening cage with higher induced potential, and there are security risks.
The electromagnetic wave that the equipment such as the valve tower of 1100kV converter station valve halls generate is also all stronger than previous engineering, using single layer of wires net screening cage
The requirement for ensureing the equipment normal operation of tour personnel cannot be met well.
Invention content
The object of the present invention is to provide a kind of ultra-high voltage converter station valve Room double layer screen cages, shield effectiveness are improved, so as to carry
High screening cage is to the personnel maked an inspection tour in the tour aisle in the valve Room and its protective effect of equipment.
To achieve these goals, the technical scheme is that：A kind of ultra-high voltage converter station valve Room double layer screen cage,
It is characterized in that：For double-layer structure；Including internal layer screening cage, outer shield cage；The outer shield cage includes cover wire net, outer
Layer steel wire mesh frame, the cover wire network framework include outer top crossbeam, two heel post of outer layer, outer layer side crossbeam, outer
Layer base longerons and outer bottom crossbeam；The cover wire network framework connects into a conductor by outer layer copper stranded conductor, described
Cover wire network framework is grounded main line by outer shield cage and is connect with the earth, and outer shield cage ground connection main line is indulged with outer bottom
Beam is connected by outer layer copper stranded conductor；The internal layer screening cage includes steel wire of internal layer net, checkered steel plate and steel wire of internal layer network framework, flower
Line steel plate is set to internal layer screening cage bottom；The steel wire of internal layer network framework includes internal layer top cross-bar, two heel post of internal layer, interior
Layer side crossbeam and internal layer base longerons；The steel wire of internal layer network framework connects into a conductor by internal layer copper stranded conductor, described
Steel wire of internal layer network framework is grounded main line by internal layer screening cage and is connect with the earth, and internal layer screening cage ground connection main line is indulged with internal layer bottom
Beam is connected by internal layer copper stranded conductor；The internal layer screening cage is connect with the outer shield cage by insulator, insulator both ends
Internal layer screening cage and outer shield cage are bolted respectively；Insulator is greater than or equal to four.
In the above-mentioned technical solutions, cover wire net is set to cover wire network framework surrounding；Steel wire of internal layer net is set to
At the top of steel wire of internal layer network framework and both sides.
In the above-mentioned technical solutions, every piece of cover wire net is greater than or equal to four with cover wire network framework pad,
Every piece of steel wire of internal layer net is greater than or equal to four with steel wire of internal layer network framework pad.
In the above-mentioned technical solutions, outer top crossbeam, two heel post of outer layer, outer layer side crossbeam are square steel tube；It is interior
Layer top cross-bar, two heel post of internal layer, internal layer side crossbeam are square steel tube；Outer top crossbeam, two heel post of outer layer, outer layer
By welding or being bolted between side crossbeam, outer bottom longeron and outer bottom crossbeam；Internal layer top cross-bar, internal layer two
By welding or being bolted between heel post, internal layer side crossbeam and internal layer base longerons, checkered steel plate.
The invention has the advantages that：
(1) valve tower when the electromagnetic wave that equipment generate passes through outer shield cage, can shield one by outer shield cage in the valve Room
Part, across outer shield cage electromagnetic wave using the shielding of internal layer screening cage, shield effectiveness significantly increases compared with single-layer shield cage
By force, so as to improve screening cage to the personnel maked an inspection tour in aisle and its protective effect of equipment；
(2) it is isolated between internal layer screening cage and outer shield cage using insulator and ground connection main line is set respectively, it is real
Show the electrical isolation of internal layer screening cage and outer shield cage, generate stronger induced potential on outer shield cage is done by independent grounding
Line is grounded, so as to reduce the induced potential on the internal layer screening cage directly contacted with tour personnel；It is carried in current conversion station voltage class
In the case that height makes in the valve Room voltage class promotion to 1100kV, the safety of tour personnel and its equipment can guarantee；
(3) for double layer screen cage in outer layer screening cage imperfect earth or damaged presence, internal layer screening cage still can support personnel
Safety.
Description of the drawings
Fig. 1 is cross-sectional view of the present invention.
Fig. 2 is facade structures schematic diagram of the present invention.
Fig. 3 is dimensional structure diagram of the present invention.
1- cover wires net in figure, 2- outer top crossbeams, two heel post of 3- outer layers, 4- outer layers side crossbeam, 5- outer layers
Base longerons, 6- outer bottom crossbeams, 7- outer shields cage ground connection main line, 8- outer layer copper stranded conductors, 9- insulators, 10- internal layer steel
Silk screen, 11- internal layer top cross-bars, two heel post of 12- internal layers, 13- internal layers side crossbeam, 14- checkered steel plates, 15- internal layers bottom
Longeron, 16- internal layers screening cage ground connection main line, 17- internal layer copper stranded conductors, 18- internal layer screening cages, 19- outer shield cages, 20- outer layers
Steel wire mesh frame, 21- steel wire of internal layer network frameworks.
Specific embodiment
The performance that the invention will now be described in detail with reference to the accompanying drawings, but they do not form limitation of the invention, only
It is for example.Make advantages of the present invention more clear by explanation simultaneously and be readily appreciated that.
It is understood refering to attached drawing：A kind of ultra-high voltage converter station valve Room double layer screen cage is double-layer structure；Including internal layer screening cage
18th, outer shield cage 19；The outer shield cage 19 includes cover wire net 1, cover wire network framework 20, the cover wire
Network framework 20 includes outer top crossbeam 2, two heel post 3 of outer layer, outer layer side crossbeam 4, outer bottom longeron 5 and outer bottom
Crossbeam 6；The cover wire network framework 20 connects into a conductor, the cover wire network framework 20 by outer layer copper stranded conductor 8
Main line 7 is grounded by outer shield cage to connect with the earth, outer shield cage ground connection main line 7 passes through outer layer with outer bottom longeron 5
Copper stranded conductor 8 connects；The internal layer screening cage 18 includes steel wire of internal layer net 10, checkered steel plate 14 and steel wire of internal layer network framework 21, flower
Line steel plate 14 is set to 18 bottom of internal layer screening cage, and checkered steel plate is used to carry tour personnel and its equipment；The steel wire of internal layer
Network framework 21 includes internal layer top cross-bar 11, two heel post 12 of internal layer, internal layer side crossbeam 13 and internal layer base longerons 15；It is described
Steel wire of internal layer network framework 21 connects into a conductor by internal layer copper stranded conductor 17, and the steel wire of internal layer network framework 21 passes through internal layer screen
It covers cage ground connection main line 16 to connect with the earth, realizes the electrical isolation of internal layer screening cage and outer shield cage, produced on outer shield cage
Raw stronger induced potential is grounded by independent grounding main line, so as to reduce on the internal layer screening cage directly contacted with tour personnel
Induced potential；Internal layer screening cage ground connection main line 16 is connect with internal layer base longerons 15 by internal layer copper stranded conductor 17；The internal layer screen
Cage 18 is covered to connect (as shown in Figure 1, Figure 2, Figure 3 shows) by insulator 9 with the outer shield cage 19；9 both ends of insulator lead to respectively
It crosses and is bolted internal layer screening cage 18 and outer shield cage 19；Insulator 9 is greater than or equal to four, realizes electric insulation.
Cover wire net 1 is set to 20 surrounding of cover wire network framework；Steel wire of internal layer net 10 is set to steel wire of internal layer net bone
21 top of frame and both sides (as shown in Figure 1, Figure 3), the setting of cover wire net and steel wire of internal layer net, for xegregating unit.
Every piece of cover wire net 1 is greater than or equal to four with 20 pad of cover wire network framework, every piece of steel wire of internal layer net
10 are greater than or equal to four with 21 pad of steel wire of internal layer network framework, and guarantee cover wire net is close with cover wire network framework
Connection ensures the close connection of steel wire of internal layer net and steel wire of internal layer network framework.
Outer top crossbeam 2, two heel post 3 of outer layer, outer layer side crossbeam 4 are square steel tube；It is internal layer top cross-bar 11, interior
Two heel post 12 of layer, internal layer side crossbeam 13 are square steel tube；Outer top crossbeam 2, two heel post 3 of outer layer, outer layer side are horizontal
By welding or being bolted between beam 4, outer bottom longeron 5 and outer bottom crossbeam 6；Internal layer top cross-bar 11, internal layer two
By welding or being bolted between heel post 12, internal layer side crossbeam 13 and internal layer base longerons 15, checkered steel plate 14
In outer layer screening cage imperfect earth, and when internal layer screening cage ground connection is good, the induced potential of outer shield cage can be hit
The gap between outer shield cage and internal layer screening cage is worn, is discharged, but internal layer screening cage ground connection is good at this time, electric current can quilt
Introduce the earth；In outer layer screening cage imperfect earth, and during internal layer screening cage imperfect earth, the induced potential of outer shield cage can be hit
Shortest path is worn, will not be discharged internal layer screening cage.
Apply the present invention to certain 1100kV current conversion station, be experimentally verified that：During using double layer screen cage, in outer layer screening cage
During imperfect earth, if internal layer screening cage ground connection is good, the induced potential of outer shield cage can puncture outer shield cage and internal layer screen
The gap between cage is covered, is discharged, but internal layer screening cage ground connection is good at this time, electric current can be introduced into the earth, will not be to internal layer
People in screening cage generates harm；In outer layer screening cage imperfect earth, such as internal layer screening cage imperfect earth, outer shield cage
Induced potential can puncture shortest path, will not discharge internal layer screening cage, will not generate danger to the people in internal layer screening cage
Evil.
Other unaccounted parts belong to the prior art.
Claims (4)
1. a kind of ultra-high voltage converter station valve Room double layer screen cage, it is characterised in that：For double-layer structure；Including internal layer screening cage
(18), outer shield cage (19)；The outer shield cage (19) includes cover wire net (1), cover wire network framework (20), institute
It states cover wire network framework (20) and includes outer top crossbeam (2), two heel post of outer layer (3), outer layer side crossbeam (4), outer layer
Base longerons (5) and outer bottom crossbeam (6)；The cover wire network framework (20) connects into one by outer layer copper stranded conductor (8)
A conductor, the cover wire network framework (20) are grounded main line (7) by outer shield cage and are connect with the earth, and outer shield cage connects
Ground main line (7) is connect with outer bottom longeron (5) by outer layer copper stranded conductor (8)；The internal layer screening cage (18) includes internal layer steel
Silk screen (10), checkered steel plate (14) and steel wire of internal layer network framework (21), checkered steel plate (14) are set to internal layer screening cage (18) bottom
Portion；The steel wire of internal layer network framework (21) includes internal layer top cross-bar (11), two heel post of internal layer (12), internal layer side crossbeam
(13) and internal layer base longerons (15)；The steel wire of internal layer network framework (21) connects into one by internal layer copper stranded conductor (17) and leads
Body, the steel wire of internal layer network framework (21) are grounded main line (16) by internal layer screening cage and are connect with the earth, internal layer screening cage ground connection
Main line (16) is connect with internal layer base longerons (15) by internal layer copper stranded conductor (17)；The internal layer screening cage (18) and the outer layer
Screening cage (19) is connected by insulator (9)；Internal layer screening cage (18) and outer layer is bolted in insulator (9) both ends respectively
Screening cage (19)；Insulator (9) is more than or equal to four.
2. a kind of ultra-high voltage converter station valve Room double layer screen cage according to claim 1, it is characterised in that：Cover wire net
(1) it is set to cover wire network framework (20) surrounding；Steel wire of internal layer net (10) be set at the top of steel wire of internal layer network framework (21) and
Both sides.
3. a kind of ultra-high voltage converter station valve Room double layer screen cage according to claim 1 or 2, it is characterised in that：Every piece outer
Layer steel wire (1) and cover wire network framework (20) pad are more than or equal to four, every piece of steel wire of internal layer net (10) and internal layer
Steel wire mesh frame (21) pad is greater than or equal to four.
4. a kind of ultra-high voltage converter station valve Room double layer screen cage according to claim 3, it is characterised in that：Outer top is horizontal
Beam (2), two heel post of outer layer (3), outer layer side crossbeam (4) are square steel tube；Internal layer top cross-bar (11), two heel post of internal layer
(12), internal layer side crossbeam (13) is square steel tube；Outer top crossbeam (2), two heel post of outer layer (3), outer layer side crossbeam
(4), by welding or being bolted between outer bottom longeron (5) and outer bottom crossbeam (6)；Internal layer top cross-bar (11),
Two heel post of internal layer (12), internal layer side crossbeam (13) and internal layer base longerons (15), checkered steel plate pass through welding between (14)
Or it is bolted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810103576.9A CN108200758A (en) | 2018-02-01 | 2018-02-01 | A kind of ultra-high voltage converter station valve Room double layer screen cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810103576.9A CN108200758A (en) | 2018-02-01 | 2018-02-01 | A kind of ultra-high voltage converter station valve Room double layer screen cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108200758A true CN108200758A (en) | 2018-06-22 |
Family
ID=62591858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810103576.9A Pending CN108200758A (en) | 2018-02-01 | 2018-02-01 | A kind of ultra-high voltage converter station valve Room double layer screen cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108200758A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110267514A (en) * | 2019-07-22 | 2019-09-20 | 义乌市亿道电子科技有限公司 | A kind of sub- equipment of business electrical with counter-measure signal function |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110267514A (en) * | 2019-07-22 | 2019-09-20 | 义乌市亿道电子科技有限公司 | A kind of sub- equipment of business electrical with counter-measure signal function |
| CN110267514B (en) * | 2019-07-22 | 2020-12-01 | 盐城市维特加智能装备科技有限公司 | Electronic equipment for enterprise with anti-interference signal effect |
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