CN108447631A - GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant - Google Patents
GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant Download PDFInfo
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- CN108447631A CN108447631A CN201810217653.3A CN201810217653A CN108447631A CN 108447631 A CN108447631 A CN 108447631A CN 201810217653 A CN201810217653 A CN 201810217653A CN 108447631 A CN108447631 A CN 108447631A
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- epoxy resin
- dielectric constant
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
- H01B19/04—Treating the surfaces, e.g. applying coatings
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- Organic Insulating Materials (AREA)
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Abstract
The present invention discloses a kind of GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant, includes mainly：First prepare epoxide resin material；Then, it is handled using staged curing method；Gradient design finally is carried out to epoxy resin disc insulator：Epoxy resin disc insulator surface is divided into five closely coupled annulars from inside to outside, enables the relative dielectric constant of annular first reduce and increases again；Epoxy resin disc insulator is positioned in magnetron sputtering apparatus, sputters different time in different location according to U-shaped distribution gradient, time range is 0min 60min, obtains the disc insulator of two-dimensional gradient distribution.Internal field is excessively high under present invention alleviation alternating voltage and promotes the purpose of insulation system electric durability energy；There are important theory value and engineering significance to improving the operation stability of GIS and the safety of electric system.
Description
Technical field
Modified polymeric material and its preparation field in being manufactured the invention belongs to high voltage installation are related to a kind of with two dimension Jie
The GIS insulator design methods of the U-shaped gradient distribution of electric constant, and in particular to one kind having the U-shaped gradient distribution of two-dimentional dielectric constant
GIS epoxy resin insulator design methods.
Background technology
In recent years, with electric system high voltage, the growth requirement of large capacity transmission, gas-insulated metal enclosed switchgear is set
Standby (GIS) and gas-insulated metal closed power transmission line (GIL) are excellent because its transmission capacity is big, floor space is small, reliability is high etc.
Point has obtained extensive concern and application.Wherein, disc insulator not only plays the role of mechanical support, but also as electric insulation
Body plays conclusive key effect to the safe and stable operation of entire GIS, GIL.However, even if harsh in quality
In 1000kV AC extra high voltage engineerings, epoxy casting class insulator remains unchanged Frequent Troubles.
It is generally believed that it is to lead to insulation breakdown, the basic reason of electric durability energy difference that non-uniform electric degree is higher.Not
With interface such as metallic conductor, insulator and the SF of medium6At three binding site of gas, due to the change dramatically of dielectric parameter,
Make non-uniform electric, internal field's distortion is serious, leads to the generation of shelf depreciation.On the one hand aggravation insulation ag(e)ing, separately
On the one hand cause flashover, reduce the electric durability energy of insulation.Currently, in order to promote the electric durability energy of insulation, frequently with optimization electrode
Or the method for insulation system shape, it such as adds grading ring, shielding case and improves insulator shape.Although field distribution is changed
It is kind, but insulation system is more complicated, and effect is limited.
Functionally graded material (FunctionallyGradedMaterial, the FGM) concept in materialogy field is applied to
Electric insulation field carries out the field distribution under exchange by building the insulation system of relative dielectric constant non-uniform Distribution
Regulation and control alleviate the excessively high purpose of internal field to promote field distribution uniform.Japan Nagoya university Okubo teaches team
Manufacturing technology is centrifuged by inorganic filler, constructs the composite material FGM insulators that contour structures are round platform and dish-type, research hair
Maximum field intensity effectively reduces at existing three binding sites, and flashover voltage is significantly improved.However this technological controllability difference and shadow
The factor of sound is complicated, it is difficult to high-volume manufacture epoxy insulation.Magnetron sputtering method is applied to epoxy resin primary surface, passes through control
Target type, sputtering time, sputtering power etc. construct two dimension FGM insulators, have many advantages, such as easy to operate, easily controllable, are
The manufacture of FGM insulators provides completely new approach.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind having two-dimentional dielectric constant U-shaped gradient point
The GIS insulator design methods of cloth, by sputtering the two-dimensional gradient that different time forms dielectric constant in epoxy resin primary surface
Distribution promotes insulator electric durability energy to regulate and control the distribution of its surface field.
The present invention is to solve the technical solution that its technical problem proposes to be：With the U-shaped gradient distribution of two-dimentional dielectric constant
GIS insulator design methods, this method comprises the following steps:
1) epoxide resin material is prepared：
(1) by epoxy resin-matrix, curing agent and aluminium oxide according to 100:38:330 proportionings are added blending tank and obtain asphalt mixtures modified by epoxy resin
Fat mixing material, 130 DEG C of temperature；
(2) motor stirs 0.5 hour, one hour of vacuum outgas under the vacuum degree of -0.1MPa；
(3) step (2) epoxy resin mixing material is poured into the mold of preheated processing, the pre-heat treatment temperature is
130 DEG C, it is not less than 1 hour；
2) it is handled using staged curing method, solidification process is divided into two steps：
(1) mold is first put into oven and carries out one-step solidification at 130 DEG C 8 hours, then demoulded；
(2) product after demoulding is put into oven and carries out secondary curing at 130 DEG C 8 hours, can be obtained epoxy after cooling
Resin disc insulator；
3) gradient design is carried out to epoxy resin disc insulator：
(1) epoxy resin disc insulator surface is divided into five closely coupled annulars from inside to outside, enables the phase of annular
Dielectric constant is first reduced and is increased again；
(2) epoxy resin disc insulator is positioned in magnetron sputtering apparatus, according to U-shaped distribution gradient in different location
Different time is sputtered, time range 0min-60min obtains the disc insulator of two-dimensional gradient distribution.
Different time is sputtered in different location in (2), from inside to outside according to U-shaped distribution gradient step by step in the step 3)
Sputtering time is respectively 60min, 30min, 0min, 30min, 60min.
Different time is sputtered in different location in (2), from inside to outside according to U-shaped distribution gradient step by step in the step 3)
Sputtering time is respectively 40min, 20min, 0min, 20min, 40min.
Different time is sputtered in different location in (2), from inside to outside according to U-shaped distribution gradient step by step in the step 3)
Sputtering time is respectively 20min, 10min, 0min, 10min, 20min.
The radio-frequency voltage in (2) in sputtering process is 650V, electric current 120mA step by step in the step 3).
(2) sputter under argon atmosphere and carry out step by step in the step 3), and argon gas flow velocity is 50-60SCCM.
The graceful board CT5531 of the preferred imported from America Hensel of step 1) epoxy resin base.
The preferred HY5533 of curing agent in the step 1).
The preferred TiO of target that magnetron sputtering uses in (2) step by step in the step 3)2
Advantageous effect
The present invention uses for reference the theory of absorption function functionally gradient material (FGM) (FGM), innovatively uses the method for magnetron sputtering will be high
Dielectric constant inorganic matter TiO2、BaTiO3Etc. being sputtered onto epoxy resin primary surface, and passes through control and sputter duration and form epoxy resin
The two-dimensional gradient of surface dielectric constant is distributed, and builds surface dielectric functionally graded material, and then is reached and alleviated office under alternating voltage
Portion's electric field is excessively high and promotes the purpose of insulation system electric durability energy.
The present invention has important theory value and engineering to improving the operation stability of GIS and the safety of electric system
Meaning.
Description of the drawings
Fig. 1 is the epoxy resin disc insulator with the U-shaped gradient distribution of two-dimentional dielectric constant of design of Simulation.
Specific implementation mode
Below by specific embodiments and the drawings, the present invention is further illustrated.The embodiment of the present invention is in order to more
So that those skilled in the art is more fully understood the present invention well, any limitation is not made to the present invention.
The mould material for the disc insulator that the present invention uses be the graceful board CT5531 epoxy resin of imported from America Hensel and
HY5533 curing agent；The target that the two-dimensional linear gradient distribution of epoxy resin-matrix and magnetron sputtering use is realized by magnetron sputtering method
Material includes but not limited to TiO2And BaTiO3, provided by middle promise green wood (Beijing) Science and Technology Ltd..
Motor of the present invention stirs 0.5 hour, one hour of vacuum outgas under the vacuum degree of -0.1MPa；The pre-heat treatment temperature
Degree is 130 DEG C, is not less than 1 hour；One-step solidification is carried out at 130 DEG C 8 hours；Secondary curing is carried out at 130 DEG C 8 hours.
Magnetron sputtering corollary apparatus of the present invention is that DK-92L types power control cabinet is filled with BILON-T-5001 type sub-cooleds cycle
It sets；The type of two-dimensional gradient distribution is linear U-shaped distribution.
Embodiment 1
1) by epoxy resin-matrix, curing agent and aluminium oxide according to 100:38:Blending tank, 130 DEG C of temperature is added in 330 proportionings；
Open motor stirring, vacuum outgas；Preheated treated mold is pushed into pouring can, carries out evacuation processing；By what is mixed
Epoxy resin mixing material is poured by casting equipment in mold.
2) epoxy resin is handled using staged curing method, and solidification process is divided into two steps：First the mold after vacuum processing is put
Enter oven and carry out one-step solidification, then demoulds；It is placed again into oven and carries out secondary curing, can be obtained epoxy resin basin after cooling
Formula insulator.
3) design that gradient is carried out to epoxy resin disc insulator, i.e., be divided into five close phases from inside to outside by its surface
Annular even enables the relative dielectric constant of annular first reduce and increases again：
Epoxy resin disc insulator is positioned in magnetron sputtering apparatus, is splashed in different location according to U-shaped distribution gradient
Different time is penetrated, sputtering time is respectively 60min, 30min, 0min, 30min, 60min from inside to outside, you can obtain two-dimentional ladder
Spend the disc insulator of distribution.
Radio-frequency voltage in sputtering process is 650V, electric current 120mA；It sputters under argon atmosphere and carries out, argon gas flow velocity
For 50SCCM.
Embodiment 2
1) by epoxy resin-matrix, curing agent and aluminium oxide according to 100:38:Blending tank, 130 DEG C of temperature is added in 330 proportionings；
Open motor stirring, vacuum outgas；Preheated treated mold is pushed into pouring can, carries out evacuation processing；By what is mixed
Epoxy resin mixing material is poured by casting equipment in mold.
2) epoxy resin is handled using staged curing method, and solidification process is divided into two steps, first puts the mold after vacuum processing
Enter oven and carry out one-step solidification, then demoulds；It is placed again into oven and carries out secondary curing, can be obtained epoxy resin basin after cooling
Formula insulator.
3) design that gradient is carried out to epoxy resin disc insulator, i.e., be divided into five close phases from inside to outside by its surface
Annular even enables the relative dielectric constant of annular first reduce and increases again：
Epoxy resin disc insulator is positioned in magnetron sputtering apparatus, is splashed in different location according to U-shaped distribution gradient
Different time is penetrated, sputtering time is respectively 40min, 20min, 0min, 20min, 40min from inside to outside, you can obtain two-dimentional ladder
Spend the disc insulator of distribution.
Radio-frequency voltage in sputtering process is 650V, electric current 120mA；It sputters under argon atmosphere and carries out, argon gas flow velocity
For 55SCCM.
Embodiment 3
1) by epoxy resin-matrix, curing agent and aluminium oxide according to 100:38:330 proportioning addition blending tanks, 130 DEG C of temperature,
Open motor stirring, vacuum outgas；Preheated treated mold is pushed into pouring can, carries out evacuation processing；By what is mixed
Epoxy resin mixing material is poured by casting equipment in mold.
2) epoxy resin is handled using staged curing method, and solidification process is divided into two steps：First the mold after vacuum processing is put
Enter oven and carry out one-step solidification, then demould, is placed again into oven and carries out secondary curing, can be obtained epoxy resin basin after cooling
Formula insulator.
3) design that gradient is carried out to epoxy resin disc insulator, i.e., be divided into five close phases from inside to outside by its surface
Annular even enables the relative dielectric constant of annular first reduce and increases again：
Epoxy resin disc insulator is positioned in magnetron sputtering apparatus, is splashed in different location according to U-shaped distribution gradient
Different time is penetrated, sputtering time is respectively 20min, 10min, 0min, 10min, 20min from inside to outside, you can obtain two-dimentional ladder
Spend the disc insulator of distribution.
Radio-frequency voltage in sputtering process is 650V, electric current 120mA；It sputters under argon atmosphere and carries out, argon gas flow velocity
For 60SCCM.
Fig. 1 is the epoxy resin disc insulator with the U-shaped gradient distribution of two-dimentional dielectric constant of design of Simulation, the present invention
The insulator with two-dimentional dielectric constant gradient distribution is constructed by controlling sputtering time, and then under flexible modulation alternating voltage
The field distribution of insulator surface improves the electric durability energy of GIS insulators.
Fig. 1 is the epoxy resin disc insulator with the U-shaped gradient distribution of two-dimentional dielectric constant of design of Simulation, can by figure
See, along its surface, the relative dielectric constant from ground terminal to high-pressure side first reduces increases again, at U-shaped distribution.With pure epoxy resin
Disc insulator compare, the design of U-shaped gradient reduces the field strength of field strength and ground terminal at three binding site of high-pressure side, makes
The more uniform along face field distribution of disc insulator is obtained, to improve the electric durability energy of insulation system.
Claims (9)
1. the GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant, which is characterized in that this method includes such as
Lower step:
1) epoxide resin material is prepared：
(1) by epoxy resin-matrix, curing agent and aluminium oxide according to 100:38:It is mixed that 330 proportioning addition blending tanks obtain epoxy resin
Condensation material, 130 DEG C of temperature；
(2) motor stirs 0.5 hour, one hour of vacuum outgas under the vacuum degree of -0.1MPa；
(3) step (2) epoxy resin mixing material is poured into the mold of preheated processing：The pre-heat treatment temperature is 130
DEG C, it is not less than 1 hour；
2) it is handled using staged curing method, solidification process is divided into two steps：
(1) mold is first put into oven and carries out one-step solidification at 130 DEG C 8 hours, then demoulded；
(2) product after demoulding is put into oven and carries out secondary curing at 130 DEG C 8 hours, can be obtained epoxy resin after cooling
Disc insulator；
3) gradient design is carried out to epoxy resin disc insulator：
(1) epoxy resin disc insulator surface is divided into five closely coupled annulars from inside to outside, enables opposite Jie of annular
Electric constant first reduces and increases again；
(2) epoxy resin disc insulator is positioned in magnetron sputtering apparatus, is sputtered in different location according to U-shaped distribution gradient
Different time, time range 0min-60min obtain the disc insulator of two-dimensional gradient distribution.
2. the GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant according to claim 1, special
Sign is, sputters different time in different location according to U-shaped distribution gradient in (2) step by step in the step 3), from inside to outside
Sputtering time is respectively 60min, 30min, 0min, 30min, 60min.
3. the GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant according to claim 1, special
Sign is, sputters different time in different location according to U-shaped distribution gradient in (2) step by step in the step 3), from inside to outside
Sputtering time is respectively 40min, 20min, 0min, 20min, 40min.
4. the GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant according to claim 1, special
Sign is, sputters different time in different location according to U-shaped distribution gradient in (2) step by step in the step 3), from inside to outside
Sputtering time is respectively 20min, 10min, 0min, 10min, 20min.
5. the GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant according to claim 1, special
Sign is, the radio-frequency voltage in the step 3) step by step in (2) in sputtering process is 650V, electric current 120mA.
6. the GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant according to claim 1, special
Sign is, (2) sputter under argon atmosphere and carry out step by step in the step 3), and argon gas flow velocity is 50-60SCCM.
7. the GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant according to claim 1, special
Sign is, the graceful board CT5531 of the preferred imported from America Hensel of step 1) epoxy resin base.
8. the GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant according to claim 1, special
Sign is, the preferred HY5533 of curing agent in the step 1).
9. the GIS insulator design methods with the U-shaped gradient distribution of two-dimentional dielectric constant according to claim 1, special
Sign is, the preferred TiO of target that magnetron sputtering uses in (2) step by step in the step 3)2。
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109992851A (en) * | 2019-03-15 | 2019-07-09 | 天津大学 | A kind of dielectric constant distribution optimization method of GIS functionally gradient insulator |
| CN111599554A (en) * | 2020-05-28 | 2020-08-28 | 天津大学 | Electric field optimization method for post insulator for extra-high voltage alternating current GIL |
| CN111599548A (en) * | 2020-05-28 | 2020-08-28 | 天津大学 | Manufacturing method of flexible interface functional gradient basin-type insulator for extra-high voltage direct current GIL |
| CN113470907A (en) * | 2021-06-23 | 2021-10-01 | 西安交通大学 | Method for inhibiting partial discharge at flange of GIS/GIL supporting insulator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109992851A (en) * | 2019-03-15 | 2019-07-09 | 天津大学 | A kind of dielectric constant distribution optimization method of GIS functionally gradient insulator |
| CN111599554A (en) * | 2020-05-28 | 2020-08-28 | 天津大学 | Electric field optimization method for post insulator for extra-high voltage alternating current GIL |
| CN111599548A (en) * | 2020-05-28 | 2020-08-28 | 天津大学 | Manufacturing method of flexible interface functional gradient basin-type insulator for extra-high voltage direct current GIL |
| CN111599548B (en) * | 2020-05-28 | 2021-10-22 | 天津大学 | Manufacturing method of flexible interface functional gradient basin-type insulator for extra-high voltage alternating current GIL |
| CN113470907A (en) * | 2021-06-23 | 2021-10-01 | 西安交通大学 | Method for inhibiting partial discharge at flange of GIS/GIL supporting insulator |
| CN113470907B (en) * | 2021-06-23 | 2022-07-12 | 西安交通大学 | Method for inhibiting partial discharge at flange of GIS/GIL supporting insulator |
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