CN106847430B - A kind of charge adaptively dissipates disc insulator - Google Patents
A kind of charge adaptively dissipates disc insulator Download PDFInfo
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- CN106847430B CN106847430B CN201710055247.7A CN201710055247A CN106847430B CN 106847430 B CN106847430 B CN 106847430B CN 201710055247 A CN201710055247 A CN 201710055247A CN 106847430 B CN106847430 B CN 106847430B
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- 239000012212 insulator Substances 0.000 title claims abstract description 47
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 59
- 230000003044 adaptive effect Effects 0.000 claims abstract description 43
- 238000009413 insulation Methods 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 26
- 239000003822 epoxy resin Substances 0.000 claims abstract description 19
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 10
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 239000010426 asphalt Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 230000005684 electric field Effects 0.000 description 8
- 238000009825 accumulation Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- VMQPMGHYRISRHO-UHFFFAOYSA-N benzvalene Chemical group C1=CC2C3C1C32 VMQPMGHYRISRHO-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/14—Supporting insulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/46—Means for providing an external arc-discharge path
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
- Insulating Bodies (AREA)
Abstract
It adaptively dissipates disc insulator the present invention relates to a kind of charge, belongs to equipment for power transmission and distribution technical field.The insulator is the integrated formed structure with U-shaped cross section, including central inserts and it is symmetricly set on the insulation layers of the center inserts both sides, the insulation layer is made of insulation sub-district, adaptive sub-district and edge flange, and central inserts respectively constitutes bottom, side wall and the top of U-shaped structure with insulation sub-district, adaptive sub-district, edge flange；Wherein, the insulation sub-district is mixed using epoxy resin, aluminium oxide and curing agent, the adaptive sub-district is mixed using epoxy resin, aluminium oxide and curing agent doped with nonlinear material, and the edge flange is made using the material identical with adaptive sub-district or using metal flange.This insulator can be adaptively adjusted its own face charge buildup in the process of running, and the limiting surface quantity of electric charge is always in safe range, so as to ensure that equipment safety is steadily run.
Description
Technical field
The invention belongs to equipment for power transmission and distribution technical field, more particularly to a kind of charge adaptively dissipates disc insulator.
Background technology
Gas-insulated metal closed power transmission line (GIL) has that transmission capacity is big, it is friendly that small, safe and environment is lost
Various features are waited well, are the effective means of the electric energy transmission for large capacity, long range.Transmission of electricity corridor is intensive, strategically located and difficult of access landforms,
Under the particular surroundings such as rivers,lakes and seas, gas-insulated metal-enclosed circuit then becomes being preferably selected for electrical energy transportation.At present, gas is exhausted
Although edge metal closed power transmission line has worldwide progressively been used widely, however, its main application is in exchange
In power grid, and the application of GIL is rarely reported in DC transmission system.In recent years, in the world there are many manufacturer, such as
Mitsubishi, Toshiba, Germany's electric power esbablished corporation such as Siemens and Switzerland ABB, all around direct current GIL have carried out and have ground in succession
Work is sent out, but is showed no formal commercial operation report.Common basin-type insulator structure such as Fig. 1 (a) institutes in existing GIL equipment
Show, including central inserts 01, being symmetricly set on the insulation layers 02 of the center inserts both sides, (insulation layer is by epoxy resin, oxidation
Aluminium and curing agent are mixed, epoxy resin, and the mass ratio of aluminium oxide and curing agent three are 100:330:38), the insulator
For top it is open and with triangular cross section integral structure.Insulation layer 02 is used for the connection of insulating body and metal electrode.
Long-term work is under high voltage direct current environment, and due to such disc insulator, there are electric field normal component Et(shown in such as Fig. 1 (b)),
Working environment lower surface is caused to have the accumulation of charge；In addition, also will in exchange GIL equipment after disconnection is switched on busbar
With the presence of the DC potential of certain amplitude, this will also make disc insulator surface Accumulating charge, and will distort original electric field, cause to set
Disc insulator flashover voltage in standby significantly reduces.At present, with the fast development of China's high voltage direct current transmission project, to straight
It is increasingly urgent to flow the demand of GIL equipment, surface charge accumulation characteristic and control measure of the inside insulation under high voltage direct current
Research become one of hot issue of various countries electric power research personnel research.
In recent years, for the research of disc insulator surface charge accumulation problem in direct current GIL, it is exhausted to be concentrated mainly on gas-solid
The measure theory and accurate measuring technique of edge barrier surface charge, D.C. isolation part surface charge accumulation characteristic and dissipation characteristic,
Surface charge control measure etc..However, so far, most of correlative study remains in simulation analysis and lab scale
The study on the modification of product sample block has the correlative study of novel high-pressure direct current GIL disc insulators of commercial Application potential still
It is rarely reported.
The content of the invention
The purpose of the present invention is overcoming the shortcoming of prior art, proposing a kind of charge, adaptively dissipation benzvalene form insulate
Space charge can be adsorbed be limited to adaptive sub-region surface, and control surface in the process of running by son, the disc insulator
The quantity of electric charge is always in safe range, while disc insulator is kept to have higher insulating properties.
The technical solution adopted in the present invention is as follows：
A kind of charge proposed by the present invention adaptively dissipates disc insulator, including central inserts and is symmetricly set in this
Entreat the insulation layer of inserts both sides, which is the integral structure with U-shaped cross section, the insulation layer by insulation sub-district, from
It adapts to sub-district and edge flange is formed, central inserts and insulation sub-district, adaptive sub-district, edge flange respectively constitute U-shaped structure
Bottom, side wall and top；Wherein, the insulation sub-district is mixed using epoxy resin, aluminium oxide and curing agent, described
Adaptive sub-district is mixed using epoxy resin, aluminium oxide and curing agent doped with nonlinear material, the edge flange
It is made using the material identical with adaptive sub-district or using metal flange.
The interior cant angle of the adaptive sub-district is no more than 20 degree respectively with outboard cant angle.
The mass ratio of epoxy resin, aluminium oxide and curing agent three that the insulation sub-district uses is 100:330:38；Institute
State epoxy resin, curing agent that adaptive sub-district uses, doped with nonlinear material aluminium oxide three mass ratio for 100:
38:330；The nonlinear material is made of zinc oxide or is made of carborundum or by zinc oxide and carborundum mixing structure
Into the nonlinear material accounts for the 5%-20% of the quality of alumina doped with nonlinear material.
A kind of charge proposed by the present invention adaptively dissipates disc insulator, and advantage is：
Control space charge is improved by shape and is adsorbed in inelastic region, while using inelastic region to insulation layer resistivity
Self adaptive control is carried out, grounding shell can be connected by low resistance come charge of releasing, so that automatic adjusument surface is electric
Lotus is horizontal, and the limiting surface quantity of electric charge is always in safe range.This will make running surface Charge horizontal less than one
Definite value, it is ensured that field strength improves its stable operating performance from the influence of charge buildup around insulator.
Description of the drawings
Fig. 1 (a) is a kind of structure diagram of existing disc insulator；Fig. 1 (b) is the electric field point of the disc insulator
Butut；
Fig. 2 is the structure diagram of the adaptive dissipation disc insulator cross section of charge proposed by the present invention；
Fig. 3 is for pouring into a mould the mold structure diagram of the adaptive dissipation disc insulator of charge proposed by the present invention；
Fig. 4 is the distribution map of the electric field of the adaptive dissipation disc insulator of charge proposed by the present invention.
It is respectively marked in figure corresponding entitled：01- centers inserts, the existing insulator dielectric areas of 02-, 1- centers inserts, 2-
Insulate sub-district, the adaptive sub-districts of 3-, 4- edges flange, cant angle in 5- insulators, 6- insulator outboard cant angles, 7- molds
Upper cover plate, 8- mold lower covers, 9- sprue gates.
Specific embodiment
To technical scheme, detailed description are as follows with reference to the accompanying drawings and embodiments：
A kind of charge proposed by the present invention adaptively dissipates disc insulator, which is one with U-shaped cross section
Body structure, cross section is as shown in Figure 1, including central inserts 1 and be symmetricly set on the insulation layers of the center inserts both sides, this is absolutely
Edge is the integral structure with U-shaped cross section, and the insulation layer is by 4 structure of insulation sub-district 2, adaptive sub-district 3 and edge flange
Into central inserts 1 and insulation sub-district 2, adaptive sub-district 3, edge flange 4 respectively constitute the bottom (1,2) of U-shaped structure, side wall
(3) and top (4)；Wherein, the insulation sub-district 2 is mixed using epoxy resin, aluminium oxide and curing agent, described adaptive
Sub-district 3 is answered to be mixed using epoxy resin, aluminium oxide and curing agent doped with nonlinear material, the edge flange 4 is adopted
It is made with the material identical with adaptive sub-district or using metal flange.
The specific implementation of this disc insulator each several part is described as follows：
The center inserts 1 can apply current existing GIS (Gas Insulated using conventional conductor inserts
Switchgear, Cubicle Gas-Insulated Switchgear) or GIL inserts realize, for connecting the inserts shape of conductor
Difference is not influenced for the function that charge adaptively regulates and controls.
Material is identical with the insulation layer material therefor of existing disc insulator used by the insulation sub-district 2, material
It is 100 to match as epoxy resin, aluminium oxide and curing agent three mass ratio:330:38.
Interior cant angle (angle on the inside of i.e. adaptive sub-district with vertical plane) 5 and the outer inclination of the adaptive sub-district 3
Oblique angle (angle on the outside of i.e. adaptive sub-district with vertical plane) 6 should be no more than 20 degree respectively, to ensure enough insulating regions；It should
Adaptive sub-district mixes system for the aluminium oxide added in the matrix being made of epoxy resin, curing agent doped with nonlinear material
Into, epoxy resin that the adaptive sub-district 3 uses, curing agent, doped with nonlinear material aluminium oxide three mass ratio
For 100:38:330, the nonlinear material is made of zinc oxide, carborundum or zinc oxide and carborundum mixing, this is non-thread
Property material accounts for the 5%-20% of the quality of alumina doped with nonlinear material.
The edge flange 4 is used for insulator outer rim, and function is adaptive sub-district outer edge with the connection of grounding shell
Effect.Metal high voltage electrode is connected by central inserts 1 with insulator.
A kind of operation principle of the adaptive dissipation disc insulator of charge proposed by the present invention is as follows：
The disc insulator is in the operational process of DC environment, on the one hand, its internal adaptive sub-district 3 can be realized
The space charge of absorption is collected, and charge is clamped down in the insulated surface area of adaptive sub-district, passes through the region
Nonlinear material carries out self adaptive control to insulation 2 resistivity of sub-district, when the charge of adaptive 3 adsorption of sub-district will reach
During the electric field distortion value of setting, adaptive 3 resistivity of sub-district can be adaptively adjusted, decline the resistivity in the region, this phase
When in the ground resistance for changing the region surface charge, grounding shell being connected by low resistance and be released, from
And automatic adjusument surface charge is horizontal, the limiting surface quantity of electric charge is always in safe range.On the other hand, the insulation sub-district
2 at high-pressure conductor, and resistivity will not change due to adaptive 3 resistivity of sub-district changes, for ensuring this benzvalene form
Insulator has enough insulating properties.
Disc insulator proposed by the present invention is made by the way of cast, is used when pouring into a mould disc insulator of the present invention
Mold as shown in figure 3, including：Mold upper cover plate 7 and mold lower cover 8 set sprue gate 9 at 7 top of mold upper cover plate；Its
In, the interior cant angle and outboard cant angle of adaptive sub-district 3 are controlled respectively within 20 degree, to ensure enough insulation layers
Domain.The disc insulator casting process is as follows：
Industrial epoxy resin, aluminium oxide are injected in a pouring can and are mixed under vacuo, temperature 130
Degree Celsius, for the sub-district 2 that insulate；Another cast is injected by industrial epoxy resin, doped with the aluminium oxide of nonlinear material
It is mixed under vacuo in tank, temperature is 130 degrees Celsius, for adaptive sub-district 3；The step should be according to existing epoxy
The industrial cast requirement of base alumina composite material insulating part carries out, and is separately added into curing continuation agent and stirs to get different epoxy groups
Alumina composite material；Central inserts 1 is fixed in mold lower cover 8, then by the epoxy oxygen of obtained insulation sub-district
Change aluminium composite material to be poured into mold lower cover 8 when liquid level reaches shown in Fig. 2 insulation 2 upper surface location of sub-district, it will be on mold
Cover board 7 is shelved on mold lower cover 8, according to common process, that is, is put into 130 degrees Celsius of incubators and is carried out isothermal curing four hours,
After insulation layer material becomes sticky, the cast of adaptive sub-district 3 is carried out by sprue gate 9.Mold after cast is transferred to temperature
Case, according to industrial requirements, i.e. 130 degrees Celsius of constant temperature demould after carrying out secondary curing shaping.
By charge of the present invention, adaptively dissipation disc insulator is applied in conventional GIL equipment, the insulator
The substantially parallel component of insulation sub-district electric field line, as shown in figure 4, therefore, almost without charge buildup phenomenon in operational process,
And electric field line normal component EtAdaptive sub-district is existed only in, it therefore, can be by charge-limited in adaptive by this structure
Sub-district, after charge buildup is more than a certain amount of, adaptive sub-district resistivity declines, so that charge is adaptively released, reaches suppression
Charge buildup processed optimizes the purpose of electric field.
A kind of charge proposed by the present invention adaptively dissipates disc insulator, can be carried out by above-mentioned shape etc. than adjustment
Afterwards, it is applied to AC and DC GIL and generalized information system as disc insulator.But application range is not limited thereto, in electric power
It in transmission and power supplying and distributing equipment, involves the need in the AC and DC electric power equipment that disc insulator is supported, including completely cutting off gas
The application case of class and conductor support class is pressed, such disc insulator can be equally applied, for limiting surface charge buildup, carry
The effect of high equipment safety operation stability.
Claims (3)
- The disc insulator 1. a kind of charge adaptively dissipates including central inserts and is symmetricly set on the exhausted of the center inserts both sides Edge area, which is characterized in that the insulator is the integral structure with U-shaped cross section, and the insulation layer is by insulation sub-district, adaptive Sub-district and edge flange are formed, and central inserts respectively constitutes the bottom of U-shaped structure with insulation sub-district, adaptive sub-district, edge flange Portion, side wall and top；Wherein, the insulation sub-district is mixed using epoxy resin, aluminium oxide and curing agent, described adaptive Sub-district is answered to be mixed using epoxy resin, aluminium oxide and curing agent doped with nonlinear material, the edge flange uses The material or use metal flange identical with adaptive sub-district is made.
- The disc insulator 2. charge according to claim 1 adaptively dissipates, which is characterized in that the adaptive sub-district Interior cant angle is no more than 20 degree respectively with outboard cant angle.
- The disc insulator 3. charge according to claim 1 adaptively dissipates, which is characterized in that the insulation sub-district uses Epoxy resin, aluminium oxide and the mass ratio of curing agent three be 100:330:38；The asphalt mixtures modified by epoxy resin that the adaptive sub-district uses Fat, curing agent, the mass ratio doped with the aluminium oxide three of nonlinear material are 100:38:330；The nonlinear material is by oxygen Change zinc to form or be made of carborundum or be made of zinc oxide and carborundum mixing, which accounts for doped with non- The 5%-20% of the quality of alumina of linear material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710055247.7A CN106847430B (en) | 2017-01-24 | 2017-01-24 | A kind of charge adaptively dissipates disc insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710055247.7A CN106847430B (en) | 2017-01-24 | 2017-01-24 | A kind of charge adaptively dissipates disc insulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106847430A CN106847430A (en) | 2017-06-13 |
| CN106847430B true CN106847430B (en) | 2018-05-29 |
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| CN201710055247.7A Active CN106847430B (en) | 2017-01-24 | 2017-01-24 | A kind of charge adaptively dissipates disc insulator |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511138B (en) * | 2017-02-24 | 2019-10-18 | 清华大学 | It is a kind of high to climb electric spacing charge adaptively dissipation high voltage direct current disc insulator |
| CN107359029B (en) * | 2017-09-01 | 2019-03-01 | 云南电网有限责任公司电力科学研究院 | It is a kind of for inhibiting the alumina whisker insulator of VFTO |
| CN107393662A (en) * | 2017-09-01 | 2017-11-24 | 云南电网有限责任公司电力科学研究院 | A kind of conical insulator for suppressing function with VFTO |
| CN107359028B (en) * | 2017-09-01 | 2019-03-15 | 云南电网有限责任公司电力科学研究院 | It is a kind of for inhibiting the nano silicon oxide insulator of VFTO |
| CN108063028A (en) * | 2018-02-01 | 2018-05-22 | 清华大学 | The novel basin-shaped insulator for regulating and controlling and adaptively dissipating based on charge |
| CN108305733A (en) * | 2018-02-01 | 2018-07-20 | 清华大学 | High-heat disc insulator preparation method |
| CN108305723A (en) * | 2018-02-01 | 2018-07-20 | 清华大学 | Benzvalene form and support insulator based on nonlinear material doping |
| CN108364731A (en) * | 2018-02-01 | 2018-08-03 | 清华大学 | Based on charge regulation and control and the novel basin-shaped insulator actively to dissipate |
| CN108305726A (en) * | 2018-02-01 | 2018-07-20 | 清华大学 | A kind of disc insulator and preparation method thereof inhibiting function with VFTO |
| CN108320869A (en) * | 2018-02-01 | 2018-07-24 | 清华大学 | A kind of direct current disc insulator |
| CN108320870A (en) * | 2018-02-01 | 2018-07-24 | 清华大学 | A kind of support insulator |
| CN108732473B (en) * | 2018-05-02 | 2023-10-27 | 沈阳工业大学 | Miniaturized basin-type insulator surface charge distribution synchronous measurement device and method |
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|---|---|---|---|---|
| DE2118498A1 (en) * | 1970-04-23 | 1971-11-11 | Gen Electric | Electrical isolator |
| CN102211375A (en) * | 2011-05-26 | 2011-10-12 | 麦克奥迪（厦门）电气股份有限公司 | Method for producing insulator or contact box with temperature and/or voltage sensor |
| CN205050649U (en) * | 2015-10-22 | 2016-02-24 | 泰安泰山高压开关有限公司 | 220kV benzvalene form insulator |
| CN105647120A (en) * | 2016-01-27 | 2016-06-08 | 西安交通大学 | Epoxy resin-based nonlinear self-adaptive nanocomposite insulating material and preparation method thereof |
-
2017
- 2017-01-24 CN CN201710055247.7A patent/CN106847430B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2118498A1 (en) * | 1970-04-23 | 1971-11-11 | Gen Electric | Electrical isolator |
| CN102211375A (en) * | 2011-05-26 | 2011-10-12 | 麦克奥迪（厦门）电气股份有限公司 | Method for producing insulator or contact box with temperature and/or voltage sensor |
| CN205050649U (en) * | 2015-10-22 | 2016-02-24 | 泰安泰山高压开关有限公司 | 220kV benzvalene form insulator |
| CN105647120A (en) * | 2016-01-27 | 2016-06-08 | 西安交通大学 | Epoxy resin-based nonlinear self-adaptive nanocomposite insulating material and preparation method thereof |
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