CN106847430A - A kind of electric charge self adaptation dissipation disc insulator - Google Patents
A kind of electric charge self adaptation dissipation disc insulator Download PDFInfo
- Publication number
- CN106847430A CN106847430A CN201710055247.7A CN201710055247A CN106847430A CN 106847430 A CN106847430 A CN 106847430A CN 201710055247 A CN201710055247 A CN 201710055247A CN 106847430 A CN106847430 A CN 106847430A
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- insulation
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- 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
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- 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
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- Engineering & Computer Science (AREA)
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Abstract
The present invention relates to a kind of electric charge self adaptation dissipation disc insulator, belong 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 layer of the central inserts both sides, the insulation layer is made up of insulation sub-district, self adaptation sub-district and edge flange, and central inserts and insulation sub-district, self adaptation sub-district, edge flange respectively constitute the bottom of U-shape structure, side wall and top；Wherein, the insulation sub-district is mixed using epoxy resin, aluminum oxide and curing agent, the self adaptation sub-district is mixed using epoxy resin, doped with the aluminum oxide and curing agent of nonlinear material, and the edge flange is used and is made with self adaptation sub-district identical material or using metal flange.This insulator can be adaptively adjusted its own face charge buildup in the process of running, the limiting surface quantity of electric charge all the time in safe range, so as to ensure that equipment safety is stably run.
Description
Technical field
The invention belongs to equipment for power transmission and distribution technical field, more particularly to a kind of electric charge self adaptation dissipation 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 Copacity, long range.Corridor is intensive in transmission of electricity, strategically located and difficult of access landforms,
Under the particular surroundings such as rivers,lakes and seas, gas-insulated metal-enclosed circuit then turns into 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, it is mainly used in exchange
In power network, and the application of GIL is rarely reported in DC transmission system.In recent years, there are many manufacturers in the world, such as
Mitsubishi, Toshiba, Germany's electric power esbablished corporation such as Siemens and Switzerland ABB, have all carried out and have ground in succession around direct current GIL
Hair work, but it is showed no formal commercial operation report.Basin-type insulator structure such as Fig. 1 (a) institutes commonly used in existing GIL equipment
Show, including central inserts 01, (insulation layer is by epoxy resin, oxidation to be symmetricly set on the insulation layer 02 of the central inserts both sides
Aluminium and curing agent are mixed, epoxy resin, and the mass ratio of aluminum oxide and curing agent three is 100:330:38), the insulator
For top is open and integrative-structure with triangular cross section.Insulation layer 02 is used for the connection of insulating body and metal electrode.
Long-term work under HVDC environment, because there is electric field normal component E in such disc insulatort(shown in such as Fig. 1 (b)),
Working environment lower surface is caused to have the accumulation of electric charge；In addition, also will on bus after switching off in exchange GIL equipment
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 is significantly reduced.At present, with the fast development of China's high voltage direct current transmission project, to straight
The demand for flowing GIL equipment is increasingly urgent, surface charge accumulation characteristic and control measure of its inside insulation under HVDC
Research turned into one of hot issue of various countries electric power researches personnel research.
In recent years, for the research of disc insulator surface charge accumulation problem in direct current GIL, it is concentrated mainly on gas-solid exhausted
The measure theory and accurate measuring technique of edge barrier surface charge, D.C. isolation part surface charge accumulation characteristic and dissipation characteristic,
The aspects such as surface charge control measure.However, so far, most of correlative study remains in simulation analysis, and lab scale
The study on the modification of product sample block, the correlative study of the novel high-pressure direct current GIL disc insulators with commercial Application potential is still
It is rarely reported.
The content of the invention
The purpose of the present invention is the weak point for overcoming prior art, proposes a kind of electric charge self adaptation dissipation benzvalene form insulation
Space charge absorption can be limited to self adaptation sub-region surface, and control surface by son, the disc insulator in the process of running
The quantity of electric charge is all the time in safe range, while keeping the disc insulator to have insulating properties higher.
The technical solution adopted in the present invention is as follows：
A kind of electric charge self adaptation dissipation disc insulator proposed by the present invention, including central inserts and be symmetricly set in this
The insulation layer of centre inserts both sides, the insulator is the integrative-structure with U-shaped cross section, the insulation layer by insulation sub-district, from
Adapt to sub-district and edge flange is constituted, central inserts and insulation sub-district, self adaptation sub-district, edge flange respectively constitute U-shape structure
Bottom, side wall and top；Wherein, the insulation sub-district is mixed using epoxy resin, aluminum oxide and curing agent, described
Self adaptation sub-district is mixed using epoxy resin, doped with the aluminum oxide and curing agent of nonlinear material, the edge flange
It is made of with self adaptation sub-district identical material or using metal flange.
The interior cant angle of the self adaptation sub-district is no more than 20 degree respectively with outboard cant angle.
The mass ratio of epoxy resin, aluminum oxide and curing agent three that the insulation sub-district is used is 100:330:38；Institute
State epoxy resin, curing agent that self adaptation sub-district uses, be 100 doped with the mass ratio of the lead oxide three of nonlinear material:
38:330；The nonlinear material is made up of zinc oxide or is made up 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 electric charge self adaptation dissipation disc insulator proposed by the present invention, its advantage is：
Control space charge is improved by profile 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 come electric charge of releasing by low resistance, so that Automatic adjusument surface is electric
Lotus level, the limiting surface quantity of electric charge is all the time in safe range.This will make operating surface Charge level be less than one
Definite value, it is ensured that field intensity is not influenceed by charge buildup around insulator, improves its stable operating performance.
Brief description of the drawings
Fig. 1 (a) is a kind of structural representation of existing disc insulator；Fig. 1 (b) is the electric field point of the disc insulator
Butut；
Fig. 2 is the structural representation of electric charge self adaptation dissipation disc insulator cross section proposed by the present invention；
Fig. 3 is the mould structure schematic diagram for pouring into a mould electric charge self adaptation dissipation disc insulator proposed by the present invention；
Fig. 4 is the distribution map of the electric field of electric charge self adaptation dissipation disc insulator proposed by the present invention.
Respectively marked in figure corresponding entitled：01- centers inserts, the existing insulator dielectric areas of 02-, 1- centers inserts, 2-
Insulation sub-district, 3- self adaptation sub-districts, 4- edges flange, cant angle in 5- insulators, 6- insulator outboard cant angles, 7- moulds
Upper cover plate, 8- mould lower covers, 9- sprue gates.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment to technical scheme describe in detail it is as follows：
A kind of electric charge self adaptation dissipation disc insulator proposed by the present invention, the insulator is with U-shaped cross section one
Body structure, its cross section are as shown in figure 1, including central inserts 1 and be symmetricly set on the insulation layer of the central inserts both sides, this is exhausted
Edge is the integrative-structure with U-shaped cross section, and the insulation layer is by insulation sub-district 2, self adaptation sub-district 3 and the structure of edge flange 4
Into central inserts 1 respectively constitutes bottom (1,2), the side wall of U-shape structure with insulation sub-district 2, self adaptation sub-district 3, edge flange 4
And top (4) (3)；Wherein, the insulation sub-district 2 is mixed using epoxy resin, aluminum oxide and curing agent, described adaptive
Answer sub-district 3 using epoxy resin, be mixed doped with the aluminum oxide and curing agent of nonlinear material, the edge flange 4 is adopted
It is made of with self adaptation sub-district identical material or using metal flange.
The specific implementation of this disc insulator each several part is described as follows：
The central inserts 1, can be using current existing GIS (Gas Insulated using conventional conductor inserts
Switchgear, Cubicle Gas-Insulated Switchgear) or GIL inserts realize, inserts shape for connecting conductor
Difference, does not influence for the function that electric charge self adaptation regulates and controls.
The material that the insulation sub-district 2 is used is identical with the insulation layer material therefor of existing disc insulator, its material
It is epoxy resin to match, and aluminum oxide and curing agent three mass ratio are 100:330:38.
Interior cant angle (i.e. the angle of self adaptation sub-district inner side and vertical plane) 5 and the outer inclination of the self adaptation sub-district 3
Oblique angle (i.e. the angle of self adaptation sub-district outside and vertical plane) 6 should respectively be no more than 20 degree, to ensure enough insulating regions；Should
Self adaptation sub-district is to add the lead oxide doped with nonlinear material to mix system in the matrix being made up of epoxy resin, curing agent
Into, epoxy resin that the self adaptation sub-district 3 is used, curing agent, doped with nonlinear material aluminum oxide three mass ratio
It is 100:38:330, the nonlinear material is made up of zinc oxide, carborundum or zinc oxide and carborundum mixing, the non-thread
Property material accounts for the 5%-20% of the lead oxide quality doped with nonlinear material.
The edge flange 4 is used for insulator outer rim, and its function is connection of the self adaptation sub-district outward flange with grounding shell
Effect.Metal high voltage electrode passes through central inserts 1 and is connected with insulator.
A kind of operation principle of electric charge self adaptation dissipation disc insulator proposed by the present invention is as follows：
The disc insulator is in the running of DC environment, on the one hand, its internal self adaptation sub-district 3 can be realized
Space charge to adsorbing is collected, and electric charge is clamped down in the insulated surface area of self adaptation sub-district, by the region
Nonlinear material carries out Self Adaptive Control to the insulation resistivity of sub-district 2, when the electric charge of the adsorption of self adaptation sub-district 3 will reach
During the electric field distortion value of setting, the resistivity of self adaptation sub-district 3 can be adaptively adjusted, decline the resistivity in the region, this phase
When in the earth resistance for changing the region surface electric charge, grounding shell can be connected by low resistance and be released, from
And Automatic adjusument surface charge level, the limiting surface quantity of electric charge is all the time in safe range.On the other hand, the insulation sub-district
2 at high-pressure conductor, and its resistivity will not change because the resistivity of self adaptation sub-district 3 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
Mould as shown in figure 3, including：Mould upper cover plate 7 and mould lower cover 8, sprue gate 9 is set at the top of mould upper cover plate 7；Its
In, the interior cant angle and outboard cant angle of self adaptation sub-district 3 are controlled within 20 degree respectively, to ensure enough insulation layers
Domain.The disc insulator casting process is as follows：
Industrial epoxy resin, aluminum oxide are injected and is mixed under vacuo in a pouring can, temperature is 130
Degree Celsius, for the sub-district 2 that insulate；Another cast is injected by industrial epoxy resin, doped with the aluminum oxide of nonlinear material
Mixed under vacuo in tank, temperature is 130 degrees Celsius, for self adaptation sub-district 3；The step should be according to existing epoxy
The industry cast requirement of base alumina composite material insulating part is carried out, and is separately added into solidification continuation agent stirring and is obtained different epoxy radicals
Alumina composite material；Central inserts 1 is fixed in mould lower cover 8, the epoxy oxygen of the insulation sub-district that then will be obtained
Change aluminium composite material to be poured into mould lower cover 8 when liquid level reaches the insulation upper surface location of sub-district 2 shown in Fig. 2, by mould
Cover plate 7 is shelved on mould lower cover 8, and according to common process, that is, being put into 130 degrees Celsius of incubators carries out isothermal curing four hours,
After insulation layer material becomes sticky, the cast of self adaptation sub-district 3 is carried out by sprue gate 9.Mould after cast is transferred to temperature
Case, the demoulding after secondary curing molding is carried out according to degree Celsius constant temperature of industrial requirements, i.e., 130.
Electric charge self adaptation dissipation disc insulator of the present invention is applied in conventional GIL equipment, the insulator
The insulation substantially parallel component of sub-district electric field line, as shown in figure 4, therefore, almost there is no charge buildup phenomenon in running,
And electric field line normal component EtSelf adaptation sub-district is existed only in, therefore, by this structure, can be by charge-limited in self adaptation
Sub-district, when charge buildup exceed it is a certain amount of after, self adaptation sub-district resistivity decline so that electric charge self adaptation is released, reach suppression
Charge buildup processed, optimizes the purpose of electric field.
A kind of electric charge self adaptation dissipation disc insulator proposed by the present invention, can carry out waiting than adjustment by above-mentioned shape
Afterwards, AC and DC GIL and generalized information system are applied to as disc insulator.But, its range of application is not limited thereto, in electric power
In transmission and power supplying and distributing equipment, in involving the need for the AC and DC electric power equipment that disc insulator is supported, including isolation gas
The application case of pressure class and conductor support class, can equally apply such disc insulator, for limiting surface charge buildup, carry
The effect of equipment safety operation stability high.
Claims (3)
1. a kind of electric charge self adaptation dissipation disc insulator proposed by the present invention, including central inserts and the center is symmetricly set on
The insulation layer of inserts both sides, it is characterised in that the insulator is the integrative-structure with U-shaped cross section, and the insulation layer is by exhausted
Edge sub-district, self adaptation sub-district and edge flange are constituted, and central inserts and insulation sub-district, self adaptation sub-district, edge flange distinguish structure
Into the bottom of U-shape structure, side wall and top；Wherein, the insulation sub-district is using the mixing of epoxy resin, aluminum oxide and curing agent
It is made, the self adaptation sub-district is mixed using epoxy resin, doped with the aluminum oxide and curing agent of nonlinear material, institute
Edge flange is stated using being made with self adaptation sub-district identical material or using metal flange.
2. electric charge self adaptation dissipation disc insulator according to claim 1, it is characterised in that the self adaptation sub-district
Interior cant angle is no more than 20 degree respectively with outboard cant angle.
3. electric charge self adaptation dissipation disc insulator according to claim 1, it is characterised in that the insulation sub-district is used
Epoxy resin, aluminum oxide and curing agent three mass ratio be 100:330:38；The asphalt mixtures modified by epoxy resin that the self adaptation sub-district is used
Fat, curing agent, the mass ratio doped with the lead oxide three of nonlinear material are 100:38:330；The nonlinear material is by oxygen
Change zinc to constitute or be made up of carborundum or be made up of zinc oxide and carborundum mixing, the nonlinear material is accounted 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 |
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| CN106847430A true CN106847430A (en) | 2017-06-13 |
| CN106847430B CN106847430B (en) | 2018-05-29 |
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ID=59120644
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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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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359028A (en) * | 2017-09-01 | 2017-11-17 | 云南电网有限责任公司电力科学研究院 | A kind of nano silicon oxide insulator for being used to suppress VFTO |
| CN107359029A (en) * | 2017-09-01 | 2017-11-17 | 云南电网有限责任公司电力科学研究院 | A kind of alumina whisker insulator for being used to suppress 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 |
| 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 |
| CN108305723A (en) * | 2018-02-01 | 2018-07-20 | 清华大学 | Benzvalene form and support insulator based on nonlinear material doping |
| 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 |
| CN108305733A (en) * | 2018-02-01 | 2018-07-20 | 清华大学 | High-heat disc insulator preparation method |
| 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 |
| 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 |
| CN108511138A (en) * | 2017-02-24 | 2018-09-07 | 清华大学 | It is a kind of high to climb electric spacing charge adaptively dissipation high voltage direct current disc insulator |
| CN108732473A (en) * | 2018-05-02 | 2018-11-02 | 沈阳工业大学 | A kind of miniaturization disc insulator surface charge distribution synchronous measuring apparatus and method |
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| 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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| 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 |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511138A (en) * | 2017-02-24 | 2018-09-07 | 清华大学 | It is a kind of high to climb electric spacing charge adaptively dissipation high voltage direct current disc insulator |
| CN107359029A (en) * | 2017-09-01 | 2017-11-17 | 云南电网有限责任公司电力科学研究院 | A kind of alumina whisker insulator for being used to suppress 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 |
| 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 |
| CN107359028A (en) * | 2017-09-01 | 2017-11-17 | 云南电网有限责任公司电力科学研究院 | A kind of nano silicon oxide insulator for being used to suppress VFTO |
| CN108305723A (en) * | 2018-02-01 | 2018-07-20 | 清华大学 | Benzvalene form and support insulator based on nonlinear material doping |
| CN108305733A (en) * | 2018-02-01 | 2018-07-20 | 清华大学 | High-heat disc insulator preparation method |
| 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 |
| 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 |
| 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 |
| WO2019148758A1 (en) * | 2018-02-01 | 2019-08-08 | 清华大学 | Direct-current basin type insulator |
| EP3748653A4 (en) * | 2018-02-01 | 2021-10-27 | Tsinghua University | Direct-current basin type insulator |
| CN108732473A (en) * | 2018-05-02 | 2018-11-02 | 沈阳工业大学 | A kind of miniaturization disc insulator surface charge distribution synchronous measuring apparatus and method |
| 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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