CN101763923A - High-voltage end - Google Patents
High-voltage end Download PDFInfo
- Publication number
- CN101763923A CN101763923A CN 201010116122 CN201010116122A CN101763923A CN 101763923 A CN101763923 A CN 101763923A CN 201010116122 CN201010116122 CN 201010116122 CN 201010116122 A CN201010116122 A CN 201010116122A CN 101763923 A CN101763923 A CN 101763923A
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- CN
- China
- Prior art keywords
- voltage
- conductor
- stressor layers
- layer
- insulating barrier
- 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
- 239000004020 conductor Substances 0.000 claims abstract description 50
- 230000004888 barrier function Effects 0.000 claims description 48
- 238000009413 insulation Methods 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 11
- 239000003990 capacitor Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 230000035882 stress Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000001771 impaired effect Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 206010063493 Premature ageing Diseases 0.000 description 2
- 208000032038 Premature aging Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/02—Cable terminations
- H02G15/06—Cable terminating boxes, frames or other structures
- H02G15/064—Cable terminating boxes, frames or other structures with devices for relieving electrical stress
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
- H02G15/103—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes with devices for relieving electrical stress
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
- H02G15/184—Cable junctions protected by sleeves, e.g. for communication cable with devices for relieving electrical stress
Landscapes
- Cable Accessories (AREA)
Abstract
The invention relates to a high-voltage end. Firstly, a conductor shielding layer 1 is made on a round conductor, secondly, thick insulating layers are made on the round conductor, thirdly, a grounding shielding layer is made on the round conductor, and fourthly, an insulating protecting sleeve is made on the round conductor round according to the voltage level. Stress layers are made on the insulating layers (2) in sequence according to the step mode. Each stress layer is provided with an independent insulating layer, and the last stress layer is connected with the grounding shielding layer. Because the insulating layers (2) are thick and keep a long distance with the conductor, the induced voltage of the conductor and the voltage of the first stress layer (4) are low, and the induced voltage of the following each stress layer is low. The voltage is induced and absorbed layer by layer in the insulating layers and is transferred to the grounding shielding layer, and the potential on the surface of the end is decreased directly. Each stress layer is provided with one independent insulating layer, and insulating capacity on the end is improved accordingly after one stress layer is added so that the potential on the surface of the end is quite low and no electricity is discharged to the ground.
Description
Technical field
High-voltage end of the present invention is adapted at using in the sleeve pipe, wall bushing, current transformer of electric power system high-tension cable, high-voltage electrical equipment, significantly improves coefficient of safety.
Background technology
1, the stress cone of existing high-voltgae pothead, stress member, stressor layers, dielectric layer belong to an integral body with conductor, voltage with conductor is consistent, cause cable end insulating barrier premature aging along face field strength distribution inequality, the high-voltgae pothead blast is often arranged, the end surface current potential is very high in addition, cause over the ground discharge easily, the time pollution flashover arranged.Similar as follows: 02289499.3 1 kinds of dried flexible cable terminals of the patent No., the patent No. 99225039.0 thermal shrinkage type cable terminals, the patent No. 00255452.6 double-layer stress decentralized crosslinking cable terminal, the patent No. 01256795.7 normal temperature shrinkage type power cable terminal head, 200610124043.6 1 kinds of rigid dry high-voltage cable terminal ends of the patent No., 200910162807.4 1 kinds of dry-type cable terminals of the patent No., 03271395.9 1 kinds of rigid dry high-voltage cable terminal ends of the patent No., 200820070487.0 1 kinds of cable sockets of the patent No., patent No. 200820189411.x insulator type dry type midium voltage cable terminals, patent No. 200820121622.x cable terminal.
2, existing sleeve pipe manufacturing technology all is to adopt the capacitor core structure, its defective: according to a rated voltage n capacitance plate and n insulating barrier (each insulating barrier is all very thin) insulator of formation that is superimposed, every layer of insulation is all very thin.Insulation between conductor and first capacitance plate can not be satisfied rating operating voltage, conductor is very thin to first capacitance plate insulation, conductor is very little to the distance of first capacitance plate, the all very long end of each capacitance plate fuses to the end, the capacitance that induces is all very big, voltage is very high, one deck ground plane voltage is also very high to the end, as long as wherein one deck insulate impaired main insulation at once to puncturing, this structure is suitable with electric capacitor, is discharging and recharging for a long time, and spoilage is quite high, and the end surface current potential is very high, cause over the ground discharge easily, the time pollution flashover is arranged, similar as follows: the patent No. 93240259.3 novel wall bushings, application number 03100143.2 dry-type high-voltage capacitor core and manufacture method thereof, application number 200510035075.4 novel insulation copper pipe bus.
3, the manufacture method of existing another kind of cable end, end conductor is connected with first metal capacitance screen with equipotential line with equipotential volume, conductor and first metal capacitance screen are equipotentials, voltage is very high, insulating barrier between first metal screen and second metal capacitance screen is very thin, distance between first metal capacitance screen and second metal capacitance screen is very little, insulation between first metal capacitance screen and second metal capacitance screen can not be satisfied rating operating voltage, insulating barrier between the capacitance plate of back n layer is all very thin, and the electric capacity electric weight that induces is all very big, and voltage is very high, one deck ground plane voltage is also very high to the end, discharge and recharge for a long time, as long as wherein one deck stretches tight impaired main insulation extremely at once to puncturing, spoilage is quite high, and the end surface current potential is very high, cause over the ground discharge easily, the time pollution flashover is arranged, be easy to occur accident.Similar as follows: 98218242.2 1 kinds of novel high-pressure cable terminals of the patent No., 99248192.9 1 kinds short type dry-type cable terminals of the patent No., the patent No. 00264710.9 dry-type cable terminal.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, provide a kind of simple in structure, effectively to solve High-Voltage Insulation end conductor Electric Field Distribution even, reduces the end current potential, surface insulated good, do not have pollution flashover.
The technical scheme that realizes the object of the invention is: high-voltage end of the present invention, be to go up by electric pressure at round conductor (tubular, clavate, twisted wire shape) to make insulation, step is as follows: 1, conductor shield (decide according to the evenness of conductor structure, conductive surface, the actual requirement of using whether needs are made conductor shield, material adopts plastics class, rubber-like semiconductive material); 2, thick insulating barrier (adopting plastics class, rubber-like) can satisfy rating operating voltage; 3, ground shield (semi-conductive layer, ground metal layer); 4, insulating sleeve.Pull out SI semi-insulation sheath and ground shield at existing main insulation end conductor by electric pressure, keep insulating barrier, on the reservation insulating barrier, take turns doing stressor layers (semiconductive material of plastics class, rubber-like or nonmagnetic metal film) by step-wise manner, each stressor layers all has independent insulating barrier, last stressor layers connects with ground shield, do outer insulation jacket after more than finishing again, add full skirt again.
The invention has the beneficial effects as follows:
1, catches up with and state technical background 1 contrast, the stress cone of existing high-voltgae pothead, stress member, stressor layers, dielectric layer belong to an integral body with conductor, voltage with conductor is consistent, cause cable end insulating barrier premature aging along face field strength distribution inequality, the end surface current potential is very high in addition, causes discharge over the ground easily.
Difference of the present invention: insulating barrier (2) is very thick very big with conductor (1) distance, can bear rating operating voltage.First stressor layers (4) is to do on insulating barrier (2), with conductor (1) be independently, the voltage ratio conductor is much lower, is equal to the isolation that very good effect is arranged between first stressor layers (4) and the conductor (1), the voltage of voltage ratio first stressor layers (4) of stressor layers (6) is low, by that analogy.
Because insulating barrier (2) is thicker bigger with conductor distance, insulation effect is better, conductor induced voltage to the first stressor layers (4) voltage ratio is less, the induced voltage of later every ply stress layer is all very little, and in insulating barrier the inside layering induced absorption and transfer on the ground shield, directly reduce the end surface current potential, each stressor layers all has an independently insulating barrier, n stressor layers just has n insulating barrier, the insulation of a stressor layers end of every increase is along with increasing, the end surface current potential is very low as a result, can never discharge over the ground.
2, catch up with and state background 2 contrast, existing sleeve pipe manufacturing technology all is to adopt the capacitor core structure, its defective: according to a rated voltage n capacitance plate (each capacitance plate is very long) and n insulating barrier (each insulating barrier is all very thin) insulator of formation that is superimposed.Conductor is very little to the distance of first capacitance plate, insulate all very thin (can not bear rating operating voltage).Distance is very little between every layer capacitance screen, and the very long end of each capacitance plate fuses to the end, and the capacitance that induces is all very big, voltage is very high, one deck ground plane surface voltage is also very high to the end, discharges and recharges for a long time, as long as wherein one deck insulate impaired main insulation at once to puncturing.And the end surface current potential is very high, causes discharge over the ground easily.
Difference of the present invention: the insulating barrier (2) between ground shield (3) and the conductor (1) is very thick, can bear rating operating voltage, distance between ground shield (3) and the conductor (1) is very big, the capacitance that induces is very little, voltage is very low, is equal to the isolation that very good effect is arranged between ground shield (3) and the conductor (1).And first stressor layers (4) is to do to bear rating operating voltage on insulating barrier (2), distance between first stressor layers (4) and the conductor (1) is very big, the capacitance that induces is very little, voltage is very low, stressor layers voltage ratio conductor is much lower, is equal to the isolation that very good effect is arranged between first stressor layers (4) and the conductor (1).Stressor layers very short (stressor layers of end to end is disconnection and independent), the capacitance that is induced is very little, and voltage is very low.
Because insulating barrier (2) is thicker bigger with conductor distance, insulation effect is better, conductor induced voltage to the first stressor layers (4) voltage ratio is less, the induced voltage of later every ply stress layer is all very little, and in insulating barrier the inside layering induced absorption and transfer on the ground shield, directly reduce the end surface current potential, each stressor layers all has an independently insulating barrier, n stressor layers just has n insulating barrier, the insulation of a stressor layers end of every increase is along with increasing, the end surface current potential is very low as a result, can never discharge over the ground.
3, catch up with and state background 3 contrasts, the manufacture method of existing another kind of cable end, end conductor is connected with first metal capacitance screen with equipotential line with equipotential volume, conductor and first metal capacitance screen are equipotentials, voltage is very high, insulating barrier very thin (can not bear rating operating voltage) between first metal screen and second metal capacitance screen, insulating barrier between the capacitance plate of back n layer is all very thin, the electric capacity electric weight that induces is all very big, voltage is very high, one deck ground plane voltage is also very high to the end, discharges and recharges for a long time, as long as wherein one deck insulate impaired main insulation at once to puncturing.And the end surface current potential is very high, causes discharge over the ground easily.
Difference of the present invention: insulating barrier (2) can bear rating operating voltage, first stressor layers (4) is to do on insulating barrier (2), with conductor (1) be independently, the voltage ratio conductor is much lower, be equal to the isolation that very good effect is arranged between first stressor layers (4) and the conductor (1), the voltage of voltage ratio first stressor layers (4) of stressor layers (6) is low, by that analogy.
Because insulating barrier (2) is thicker bigger with conductor distance, insulation effect is better, conductor induced voltage to the first stressor layers (4) voltage ratio is less, the induced voltage of later every ply stress layer is all very little, and in insulating barrier the inside layering induced absorption and transfer on the ground shield, directly reduce the end surface current potential, each stressor layers all has an independently insulating barrier, n stressor layers just has n insulating barrier, the insulation of a stressor layers end of every increase is along with increasing, the end surface current potential is very low as a result, can never discharge over the ground.
Description of drawings
Accompanying drawing 1,2,3 is a structural representation of the present invention.
In the accompanying drawing 1: 1. conductor, 2. insulating barrier, 3 ground shield, 4. stressor layers, 5. insulating barrier, 6. stressor layers, 7. insulating barrier, 8. stressor layers, 9. insulating sleeve layer, 10. full skirt.
In the accompanying drawing 2: 1. the interior circle of high-voltage end, 2. insulating barrier on the conductor, 4. stressor layers, 5. insulating barrier, 6. stressor layers, 7. insulating barrier, 8. stressor layers, 9 insulating sleeve layer .10. full skirts, 11. ground shield junctions.
In the accompanying drawing 3: 1. the interior circle of high-voltage end, 4. stressor layers, 5. insulating barrier, 6. stressor layers, 7. insulating barrier, 8. stressor layers, 9 insulating sleeve layer .10. full skirts, 11. ground shield junctions.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
As shown in Figure 1, high-voltage end of the present invention, manufacture method example: the processing of the end terminal head of 6kV high-tension cable, adopt method of the present invention earlier cable end to be pulled out sheath (9) 500mm from the end, pull out ground shield (3) 400mm again from the end, pull out insulating barrier 100mm (being used for cable terminal connects) from the end, begin to do first stressor layers (4) from end 150mm at insulating barrier (2), stressor layers width 50～100mm, on stressor layers (4), do insulating barrier (5) and handle (insulation level: industrial frequency withstand voltage＞2kV/1min), do three stressor layers by stepped total, three insulating barriers, tertiary stress layer (8) is connected with ground shield (3), do insulation oversheath (9) and full skirt (10) on this again, the cable terminal insulation level of making of the method exceeds 50% (industrial frequency withstand voltage＞50kV/1min), can accomplish non-maintaining operation not discharge over the ground in 20 years than the method for above-mentioned technical background, no pollution flashover.The insulation processing of said process can adopt material contracting with heat or shrinkage material or mould material, and stressor layers can adopt material contracting with heat or shrinkage material or mould material or nonmagnetic metal film.
Can make prefabricated shrinkage high-voltage end by said process in addition.Manufacture method example: according to the requirement of rating operating voltage, do the part that cuts off of band full skirt, press the pre-buried n of a said structure stressor layers inside, as Fig. 2, shown in Figure 3.Fig. 2 is used for the round conductor that the end does not have insulating barrier, and Fig. 3 is used for the round conductor that there is insulating barrier the end.
Production process as stated above can be made cable terminal, wall bushing, bushing shell for transformer, switch sleeve pipe, electrical equipment sleeve pipe, capacitor casing.
Claims (5)
1. high-voltage end, its feature: the insulation level of insulating barrier (2) can satisfy the rating operating voltage requirement between first stressor layers (4) in the round conductor overhang insulation layer and conductor (1), require to do n stressor layers according to rating operating voltage in first stressor layers back, insulating barrier is arranged between the stressor layers, outermost stressor layers is connected with ground shield (3), and the high-voltage end appearance has insulating sleeve (9).
2. high-voltage end according to claim 1 is characterized in that: there is full skirt (10) the high-voltage end outside.
3. high-voltage end according to claim 1 is characterized in that: insulating material adopts plastics class, rubber-like.
4. high-voltage end according to claim 1 is characterized in that: the stressor layers material adopts the semiconductive material or the nonmagnetic metal film of plastics class, rubber-like.
5. high-voltage end according to claim 1 is characterized in that: can be used for cable terminal, wall bushing, bushing shell for transformer, switch sleeve pipe, electrical equipment sleeve pipe, capacitor casing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010116122 CN101763923B (en) | 2010-02-20 | 2010-02-20 | High-voltage end |
| PCT/CN2010/079148 WO2011100883A1 (en) | 2010-02-20 | 2010-11-25 | High voltage terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010116122 CN101763923B (en) | 2010-02-20 | 2010-02-20 | High-voltage end |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101763923A true CN101763923A (en) | 2010-06-30 |
| CN101763923B CN101763923B (en) | 2013-01-02 |
Family
ID=42495026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010116122 Active CN101763923B (en) | 2010-02-20 | 2010-02-20 | High-voltage end |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101763923B (en) |
| WO (1) | WO2011100883A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013644A (en) * | 2010-11-15 | 2011-04-13 | 国网电力科学研究院武汉南瑞有限责任公司 | Air-insulated switching device used for controlling inner electric field |
| WO2011100883A1 (en) * | 2010-02-20 | 2011-08-25 | Luo Zhizhao | High voltage terminal |
| CN102347598A (en) * | 2011-08-23 | 2012-02-08 | 上海永锦电气集团有限公司 | Cable terminal with stress pipe |
| CN104240811A (en) * | 2014-09-02 | 2014-12-24 | 山东中泰阳光电气科技有限公司 | Tubular busbar and special processing device and method for tubular busbar |
| CN105144308A (en) * | 2012-12-13 | 2015-12-09 | Abb技术有限公司 | High voltage device and a method of manufacturing a high voltage device |
| CN110459362A (en) * | 2019-08-23 | 2019-11-15 | 深圳市沃尔电力技术有限公司 | Coaxial cables and cable reel collector boxes using coaxial cables |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2483871Y (en) * | 2001-05-10 | 2002-03-27 | 上海通用电气广电有限公司 | Isolated contact box |
| CN2590232Y (en) * | 2002-12-06 | 2003-12-03 | 王学东 | Dry type flexible cable termination end |
| CN1186783C (en) * | 2003-01-07 | 2005-01-26 | 孙闻峰 | Dry-type high-voltage capacitor core and manufacturing method thereof |
| CN100508319C (en) * | 2006-04-05 | 2009-07-01 | 罗东豪 | A kind of sheath pipe and its manufacturing method |
| CN201041931Y (en) * | 2006-04-06 | 2008-03-26 | 罗东豪 | A jacket tube |
| CN101339824B (en) * | 2008-08-14 | 2010-11-03 | 上海西邦电气有限公司 | Composite insulating tube type bus and method for preparing the same |
| CN101763923B (en) * | 2010-02-20 | 2013-01-02 | 罗志昭 | High-voltage end |
-
2010
- 2010-02-20 CN CN 201010116122 patent/CN101763923B/en active Active
- 2010-11-25 WO PCT/CN2010/079148 patent/WO2011100883A1/en active Application Filing
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011100883A1 (en) * | 2010-02-20 | 2011-08-25 | Luo Zhizhao | High voltage terminal |
| CN102013644A (en) * | 2010-11-15 | 2011-04-13 | 国网电力科学研究院武汉南瑞有限责任公司 | Air-insulated switching device used for controlling inner electric field |
| CN102347598A (en) * | 2011-08-23 | 2012-02-08 | 上海永锦电气集团有限公司 | Cable terminal with stress pipe |
| CN105144308A (en) * | 2012-12-13 | 2015-12-09 | Abb技术有限公司 | High voltage device and a method of manufacturing a high voltage device |
| CN105144308B (en) * | 2012-12-13 | 2016-10-12 | Abb技术有限公司 | High pressure equipment and the method manufacturing high pressure equipment |
| US9870847B2 (en) | 2012-12-13 | 2018-01-16 | Abb Schweiz Ag | High voltage device and a method of manufacturing a high voltage device |
| CN104240811A (en) * | 2014-09-02 | 2014-12-24 | 山东中泰阳光电气科技有限公司 | Tubular busbar and special processing device and method for tubular busbar |
| CN104240811B (en) * | 2014-09-02 | 2016-08-24 | 山东中泰阳光电气科技有限公司 | Tube type bus and special apparatus for working thereof and processing method |
| CN110459362A (en) * | 2019-08-23 | 2019-11-15 | 深圳市沃尔电力技术有限公司 | Coaxial cables and cable reel collector boxes using coaxial cables |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011100883A1 (en) | 2011-08-25 |
| CN101763923B (en) | 2013-01-02 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: LUO DONGHAO |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Luo Zhizhao Inventor after: Luo Donghao Inventor before: Luo Zhizhao |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LUO ZHIZHAO TO: LUO ZHIZHAO LUO DONGHAO |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20110221 Address after: Panyu District City, Guangzhou City, Guangdong Province town of dragon 511400 Yingbin Road section of the United States Jinlong Garden 4 Street No. 1 Applicant after: Luo Zhizhao Co-applicant after: Luo Donghao Address before: Panyu District City, Guangzhou City, Guangdong Province town of dragon 511400 Yingbin Road section of the United States Jinlong Garden 4 Street No. 1 Applicant before: Luo Zhizhao |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |