CN108484954A - GIL insulator design methods with the U-shaped gradient distribution of surface conductance two dimension - Google Patents
GIL insulator design methods with the U-shaped gradient distribution of surface conductance two dimension Download PDFInfo
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- CN108484954A CN108484954A CN201810168067.4A CN201810168067A CN108484954A CN 108484954 A CN108484954 A CN 108484954A CN 201810168067 A CN201810168067 A CN 201810168067A CN 108484954 A CN108484954 A CN 108484954A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/126—Halogenation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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Abstract
The present invention discloses a kind of GIL insulator design methods with the U-shaped gradient distribution of surface conductance two dimension, this method key step：First make epoxy resins insulation sample；Then epoxy resin is handled using staged curing method；Last epoxy resin disc insulator surface carries out linear gradient design：Insulator surface is divided into five close-connected annular regions from inside to outside, design surface conductance first reduces to be increased afterwards；Sample is placed in fluorination treatment equipment, managing different time at different locations according to dull distribution gradient obtains the disc insulator of surface conductance gradient distribution.It is distributed by carrying out gradient fluorination treatment to epoxy resin to obtain the U-shaped gradient of surface conductance two dimension, to promote the performance of insulator.
Description
Technical field
The invention belongs to high voltage installation manufacturing fields, and in particular to one kind having the U-shaped gradient distribution of surface conductance two dimension
GIL insulator design methods.
Background technology
With the fast development of high voltage power transmisson system, the Insulation Problems of power equipment become increasingly conspicuous, and design is got over manufacture
Come more important.D.C. high voltage transmission (HVDC) is in long-distance and large-capacity power transmission, Asynchronous Communication Power System Interconnection, offshore platform and isolated island
Power transmission, renewable energy source power, large city power supply increase-volume etc. have significant advantage, and development is quick, there is an urgent need to
The respective switch equipment to match and transmission line of electricity.However, existing research and application show to manufacture and design it is safe and reliable straight
Stream GIL is still a challenge.Under DC condition in insulator During Process of Long-term Operation, due to dielectric parameter change dramatically, office
Portion region electric field can be distorted, and cause electric discharge, insulation ag(e)ing, and then may lead to device fails.Therefore, exhausted to benzvalene form
Edge carries out surface design, the U-shaped gradient distribution of surface conductance two dimension is made it have, to further increase GIL insulator reliabilities
New thinking is provided, it is significant for promoting direct current power system further to develop.
For fixing, supporting the disc insulator of high-pressure conductor to mostly use epoxy resin, being primarily due to it has brilliance
Electrical property and mechanical property.Fluorine gas is surface-treated by the present invention for epoxy disc insulator, and by controlling fluorination conditions,
Surface graded fluorinated layer is formed, its surface conductance is changed, makes disc insulator that there is the U-shaped gradient distribution of surface conductance two dimension.It grinds
Study carefully and show that the surface conductance rate score of the disc insulator of the epoxy after gradient fluorination treatment will increased, distribution will be excellent
Change.Therefore, design and make performance and direct current transportation of the surface graded fluorinated modified disc insulator for raising GIL insulators
The safety of system has important theory value and engineering significance.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind having the U-shaped gradient point of surface conductance two dimension
The GIL insulator design methods of cloth obtain the U-shaped gradient of surface conductance two dimension by carrying out gradient fluorination treatment to epoxy resin
Distribution, to promote the performance of insulator.Epoxy resin insulator after gradient fluorination treatment has the fluorination table of thickness in gradient
Layer has the U-shaped gradient distribution of surface conductance two dimension, optimizes the structure of material, regulate and control the distribution of electric field, improve GIL insulators
Electric durability can be with the safety of DC transmission system.
The technical solution adopted by the present invention to solve the technical problems is：With the U-shaped gradient distribution of surface conductance two dimension
GIL insulator design methods, this method comprises the following steps：
1) epoxy resins insulation sample is made：
(1) by epoxy resin, curing agent and aluminium oxide according to 100：38：330 proportionings are added blending tank and obtain epoxy resin
Mixing material, 130 DEG C of temperature；
(2) motor stirring, vacuum outgas are opened；
(3) the pre-heat treatment mold is pushed into pouring can, carries out evacuation processing；
(4) step (1) epoxy resin mixing material is poured into mold；
2) epoxy resin is handled using staged curing method, and solidification process is divided into two steps：
(1) mold after vacuum processing is put into oven and carries out one-step solidification, then demoulded；
(2) it is put into oven and carries out secondary curing, can be obtained epoxy resin disc insulator after cooling；
3) step 2) epoxy resin disc insulator surface is subjected to linear gradient design：
(1) insulator surface is divided into five close-connected annular regions from inside to outside, design surface conductance first reduces
After increase；
(2) sample is placed in fluorination treatment equipment, different time is managed at different locations according to dull distribution gradient,
Obtain the disc insulator of surface conductance gradient distribution.
The step 3) is specially:Sample is placed in fluorination treatment equipment, according to dull distribution gradient in different positions
Processing different time is set, the fluorination treatment time is respectively 60min, 30min, 0min, 30min, 60min, temperature 25 from inside to outside
℃。
The step 3) is specially:Sample is placed in fluorination treatment equipment, according to dull distribution gradient in different positions
Processing different time is set, the fluorination treatment time is respectively 45min, 15min, 0min, 15min, 45min, temperature 25 from inside to outside
℃。
The step 3) is specially:Sample is placed in fluorination treatment equipment, according to dull distribution gradient in different positions
Processing different time is set, the fluorination treatment time is respectively 20min, 5min, 0min, 5min, 20min, 25 DEG C of temperature from inside to outside.
The graceful board CT5531 of the preferred imported from America Hensel of step 1) epoxy resin.
The preferred HY5533 of curing agent in the step 1).
The gas that (2) fluorination treatment equipment uses step by step in the step 2) is N2/F2Volume ratio be 4/1 mixing
Gas
Advantageous effect
Epoxy resin is carried out gradient fluorination treatment by the present invention, obtains the epoxy resin of surface modification, and by controlling fluorine
Change condition forms the distribution of surface conductance gradient, optimizes material structure, regulates and controls field distribution, improves Insulators Used.Therefore, originally
Invention has important theory value and engineering significance to the safety for improving the performance and DC transmission system of GIL insulators.
Description of the drawings
Fig. 1 is direct current epoxy disc insulator production flow diagram；
Fig. 2 is the epoxy resin disc insulator with the U-shaped gradient distribution of surface conductance two dimension 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 present invention has the GIL insulator design methods of the U-shaped gradient distribution of surface conductance two dimension, is insulated using direct current benzvalene form
The mould material of son is the graceful board CT5531 epoxy resin of imported from America Hensel and HY5533 curing agent；Being fluorinated the gas used is
N2/F2=4/1 mixed gas, and provided by the global gas Co., Ltd in Tianjin.Fig. 1 is direct current epoxy disc insulator system
Make flow chart；Fig. 2 is the epoxy resin disc insulator with the U-shaped gradient distribution of surface conductance two dimension of design of Simulation.
Embodiment 1
1) by epoxy resin, curing agent and aluminium oxide according to 100：38：Blending tank is added in 330 proportionings, and 130 DEG C of temperature is opened
Open motor stirring, vacuum outgas；Preheated treated mold is pushed into pouring can, carries out evacuation processing；The ring that will be mixed
Oxygen resin mixed 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) U-shaped gradient design is carried out on disc insulator surface, insulator surface is divided into five from inside to outside and is closely connected
The annular region connect, design surface conductance first reduces to be increased afterwards.Sample is placed in fluorination treatment equipment, according to U-shaped distribution
Gradient manages different time at different locations, from inside to outside the fluorination treatment time be respectively 60min, 30min, 0min, 30min,
60min, 25 DEG C of temperature, you can obtain the disc insulator of surface conductance linear gradient distribution.
Embodiment 2
1) by epoxy resin, curing agent and aluminium oxide according to 100：38：Blending tank is added in 330 proportionings, and 130 DEG C of temperature is opened
Open motor stirring, vacuum outgas；Preheated treated mold is pushed into pouring can, carries out evacuation processing；The ring that will be mixed
Oxygen resin mixed 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) U-shaped gradient design is carried out on disc insulator surface, insulator surface is divided into five from inside to outside and is closely connected
The annular region connect, design surface conductance first reduces to be increased afterwards.Sample is placed in fluorination treatment equipment, according to U-shaped distribution
Gradient manages different time at different locations, from inside to outside the fluorination treatment time be respectively 45min, 15min, 0min, 15min,
45min, 25 DEG C of temperature, you can obtain the disc insulator of surface conductance linear gradient distribution.
Embodiment 3
1) by epoxy resin, curing agent and aluminium oxide according to 100：38：Blending tank is added in 330 proportionings, and 130 DEG C of temperature is opened
Open motor stirring, vacuum outgas；Preheated treated mold is pushed into pouring can, carries out evacuation processing；The ring that will be mixed
Oxygen resin mixed 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) U-shaped gradient design is carried out on disc insulator surface, insulator surface is divided into five from inside to outside and is closely connected
The annular region connect, design surface conductance first reduces to be increased afterwards.Sample is placed in fluorination treatment equipment, according to U-shaped distribution
Gradient manages different time at different locations, from inside to outside the fluorination treatment time be respectively 20min, 5min, 0min, 5min,
20min, 25 DEG C of temperature, you can obtain the disc insulator of surface conductance linear gradient distribution.
Fig. 2 shows that the epoxy resin insulator after gradient fluorination treatment has the fluorination surface layer of thickness in gradient, has table
The U-shaped gradient distribution of sheet conductance two dimension, optimizes the structure of material, regulates and controls the distribution of electric field, improve GIL insulators electric durability can and
The safety of DC transmission system.
Claims (7)
1. the GIL insulator design methods with the U-shaped gradient distribution of surface conductance two dimension, which is characterized in that this method includes such as
Lower step：
1) epoxy resins insulation sample is made：
(1) by epoxy resin, curing agent and aluminium oxide according to 100：38：330 proportionings are added blending tank and obtain epoxy resin mixing
Material, 130 DEG C of temperature；
(2) motor stirring, vacuum outgas are opened；
(3) the pre-heat treatment mold is pushed into pouring can, carries out evacuation processing；
(4) step (1) epoxy resin mixing material is poured into mold；
2) epoxy resin is handled using staged curing method, and solidification process is divided into two steps：
(1) mold after vacuum processing is put into oven and carries out one-step solidification, then demoulded；
(2) it is put into oven and carries out secondary curing, can be obtained epoxy resin disc insulator after cooling；
3) step 2) epoxy resin disc insulator surface is subjected to U-shaped gradient design：
(1) insulator surface is divided into five close-connected annular regions from inside to outside, design surface conductance first reduces to be increased afterwards
Greatly；
(2) sample is placed in fluorination treatment equipment, manages different time at different locations according to dull distribution gradient, obtains
The disc insulator of surface conductance gradient distribution.
2. the GIL insulator design methods according to claim 1 with the U-shaped gradient distribution of surface conductance two dimension, special
Sign is that the step 3) is specially:Sample is placed in fluorination treatment equipment, according to dull distribution gradient in different location
Different time is handled, the fluorination treatment time is respectively 60min, 30min, 0min, 30min, 60min, 25 DEG C of temperature from inside to outside.
3. the GIL insulator design methods according to claim 1 with the U-shaped gradient distribution of surface conductance two dimension, special
Sign is that the step 3) is specially:Sample is placed in fluorination treatment equipment, according to dull distribution gradient in different location
Different time is handled, the fluorination treatment time is respectively 45min, 15min, 0min, 15min, 45min, 25 DEG C of temperature from inside to outside.
4. the GIL insulator design methods according to claim 1 with the U-shaped gradient distribution of surface conductance two dimension, special
Sign is that the step 3) is specially:Sample is placed in fluorination treatment equipment, according to dull distribution gradient in different location
Different time is handled, the fluorination treatment time is respectively 20min, 5min, 0min, 5min, 20min, 25 DEG C of temperature from inside to outside.
5. the GIL insulator design methods according to claim 1 with the U-shaped gradient distribution of surface conductance two dimension, special
Sign is, the graceful board CT5531 of the preferred imported from America Hensel of step 1) epoxy resin.
6. the GIL insulator design methods according to claim 1 with the U-shaped gradient distribution of surface conductance two dimension, special
Sign is, the preferred HY5533 of curing agent in the step 1).
7. the GIL insulator design methods according to claim 1 with the U-shaped gradient distribution of surface conductance two dimension, special
Sign is that the gas that (2) fluorination treatment equipment uses step by step in the step 2) is N2/F2Volume ratio be 4/1 gaseous mixture
Body.
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| CN201810168067.4A CN108484954B (en) | 2018-02-28 | 2018-02-28 | GIL insulator design method with surface conductance two-dimensional U-shaped gradient distribution |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659102A (en) * | 2018-12-29 | 2019-04-19 | 天津大学 | GIL the flashover voltage of the insulator improvement method based on gas-solid interface electric Field Optimization |
| CN109767884A (en) * | 2018-12-29 | 2019-05-17 | 南方电网科学研究院有限责任公司 | A kind of GIL insulator production method with surface conductance gradient distribution |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840757A (en) * | 2010-05-21 | 2010-09-22 | 扬州东宇电气有限公司 | Manufacturing method for environment-friendly type insulator shell |
| CN105542399A (en) * | 2016-01-18 | 2016-05-04 | 西安交通大学 | Centrifugal manufacturing method for dielectric functional gradient insulator |
| CN105679473A (en) * | 2016-01-18 | 2016-06-15 | 西安交通大学 | Lamination fabrication method of dielectric functionally graded insulator |
| CN107578861A (en) * | 2017-09-01 | 2018-01-12 | 云南电网有限责任公司电力科学研究院 | Charge injection and device under a kind of transient suppression electric field |
-
2018
- 2018-02-28 CN CN201810168067.4A patent/CN108484954B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840757A (en) * | 2010-05-21 | 2010-09-22 | 扬州东宇电气有限公司 | Manufacturing method for environment-friendly type insulator shell |
| CN105542399A (en) * | 2016-01-18 | 2016-05-04 | 西安交通大学 | Centrifugal manufacturing method for dielectric functional gradient insulator |
| CN105679473A (en) * | 2016-01-18 | 2016-06-15 | 西安交通大学 | Lamination fabrication method of dielectric functionally graded insulator |
| CN107578861A (en) * | 2017-09-01 | 2018-01-12 | 云南电网有限责任公司电力科学研究院 | Charge injection and device under a kind of transient suppression electric field |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659102A (en) * | 2018-12-29 | 2019-04-19 | 天津大学 | GIL the flashover voltage of the insulator improvement method based on gas-solid interface electric Field Optimization |
| CN109767884A (en) * | 2018-12-29 | 2019-05-17 | 南方电网科学研究院有限责任公司 | A kind of GIL insulator production method with surface conductance gradient distribution |
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| CN108484954B (en) | 2020-01-07 |
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Granted publication date: 20200107 |