CN107768045A - A kind of composite insulator with the equal laminated structure of nonlinear conductance material - Google Patents
A kind of composite insulator with the equal laminated structure of nonlinear conductance material Download PDFInfo
- Publication number
- CN107768045A CN107768045A CN201711047423.9A CN201711047423A CN107768045A CN 107768045 A CN107768045 A CN 107768045A CN 201711047423 A CN201711047423 A CN 201711047423A CN 107768045 A CN107768045 A CN 107768045A
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- China
- Prior art keywords
- nonlinear conductance
- conductance material
- metal fitting
- press layer
- silicon rubber
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Classifications
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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
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/04—Chains; Multiple chains
-
- 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
-
- 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
- H01B17/48—Means for obtaining improved distribution of voltage; Protection against arc discharges over chains or other serially-arranged insulators
Abstract
The present invention proposes a kind of composite insulator with the equal laminated structure of nonlinear conductance material, suitable for AC electric power systems, belongs to high-tension apparatus design field.Including end metal fitting ball-and-socket, plug, silicon rubber cluster parachute and sheath and end metal fitting bulb, the plug upper and lower side installs the end metal fitting ball-and-socket and end metal fitting bulb respectively, and the end metal fitting ball-and-socket and end metal fitting bulb are connected with low-pressure end with high-pressure side respectively；The silicon rubber cluster parachute and sheath are wrapped in the outside plug；Upper and lower nonlinear conductance material equalizing press layer is further respectively had between the plug upper and lower side and silicon rubber cluster parachute and sheath；The nonlinear conductance material that the upper and lower nonlinear conductance material equalizing press layer is combined by zinc oxide ceramics powder granule with silicon rubber is made.The present invention makes field strength on insulator be evenly distributed, increases the reliability of insulator, can play a part of substituting grading ring, reduce composite insulator cost and weight by introducing nonlinear conductance equalizing press layer.
Description
Technical field
It is particularly a kind of compound with the equal laminated structure of nonlinear conductance material the present invention relates to electrical equipment technical field
Insulator.
Background technology
Important component of the composite insulator as high-voltage transmission equipment, compared to traditional porcelain bushing type insulator, due to
Its excellent resistance to pollution flashover performance is applied in transmission line of electricity more and more widely, and particularly UHV transmission line (refers to ± 800 thousand
The voltage class of volt and the direct current of the above and 1000 kilovolts and above alternating current conveying electric energy), at present substantially using multiple
Close insulator.
A kind of structure of existing composite insulator is as shown in figure 1, including end metal fitting ball-and-socket 1, plug 2, silicon rubber umbrella
Group and sheath 4 and end metal fitting bulb 6；Wherein, plug 2 is made up of glass fibre leading-drawing rod, for playing support and insulation
Effect, the plug upper and lower side install the end metal fitting ball-and-socket 1 and end metal fitting bulb 6, the end metal fitting ball-and-socket 1 and end respectively
Portion's hardware ball-head 6 is connected with low-pressure end with high-pressure side respectively；Silicon rubber cluster parachute and sheath 4 are wrapped in the outside of plug 2.
However, research shows that composite insulator is extremely uneven along face field strength distribution, most voltages are applied to close to height
On the cluster parachute of pressure side and earth terminal, the insulating effect of whole branch composite insulator can not be played, effective creep age distance is small, local field strength
Greatly, corona discharge even edge flashing easily occurs.At the same time, the application of nonlinear dielectric is also greatly developed.
Nonlinear dielectric refers to the dielectric that electrical conductivity or relative dielectric constant change and changed with electric-field intensity, its outstanding advantages
It is that can voluntarily be homogenized Electric Field Distribution in the case where handing over (or straight) stream electric field, and significantly reduces insulation system performance, there is " wisdom insulation material
The title of material ", application the most typical are the zinc oxide pressure-sensitive ceramics in power system arrester.
For the problem of non-uniform electric, being used at present compound exhausted along plug direction existing for composite insulator
The method that grading ring is installed in edge both sides, although installation grading ring causes field strength distribution to make moderate progress, field strength distribution is still not
Uniformly, composite insulator overall weight and cost are added while.
The content of the invention
The invention aims to solve the weak point of prior art, there is provided a kind of suitable for AC electric power systems
Composite insulator with the equal laminated structure of nonlinear conductance material.Nonlinear conductance composite is introduced compound inslation by the present invention
In son, for field strength distribution of the uniform composite insulator along plug direction.Not only so that composite insulator field strength distribution becomes equal
It is even, while grading ring is instead of, reduce cost.
Concrete technical scheme is：
A kind of composite insulator with the equal laminated structure of nonlinear conductance material, suitable for AC electric power systems, including end
Portion's hardware fittings ball and socket, plug, silicon rubber cluster parachute and sheath and end metal fitting bulb, the plug upper and lower side respectively with the end
Hardware fittings ball and socket and end metal fitting bulb are fixedly connected with, the end metal fitting ball-and-socket and end metal fitting bulb respectively with low-pressure end and high-pressure side
Connection；The silicon rubber cluster parachute and sheath are wrapped in the outside plug；Characterized in that, in the plug upper end and silicon rubber
Nonlinear conductance material equalizing press layer is additionally provided between cluster parachute and sheath, the plug lower end and silicon rubber cluster parachute and sheath it
Between be additionally provided with lower nonlinear conductance material equalizing press layer；The upper and lower nonlinear conductance material equalizing press layer is by zinc oxide ceramics powder
The nonlinear conductance material that body particle is combined with silicon rubber is made.
The upper nonlinear conductance material equalizing press layer and lower nonlinear conductance material equalizing press layer, its length range are two groups of umbrellas
Length of the length of skirt to six groups of full skirts.
Between zinc oxide ceramics powder granule size in the nonlinear conductance material equalizing press layer is 30-180 μm, account for non-
The percent by volume of linear conducting material equalizing press layer is 20%-60%.
A kind of compound inslation with the equal laminated structure of nonlinear conductance material is obtained by the above-mentioned technical proposal of the present invention
Son, its advantage are：
It is used for uniform composite insulator both ends field strength distribution by using nonlinear conductance composite, can plays very well
Field strength even results, effectively solve the problems, such as the generation of flashover, while the installation of grading ring can be substituted, reduce compound inslation
The cost and weight of son.
Brief description of the drawings
Fig. 1 is a kind of structural representation of existing composite insulator；
Fig. 2 is the structural representation of the composite insulator of the present invention with the equal laminated structure of nonlinear conductance material；
In figure, 1, end metal fitting ball-and-socket；2nd, plug；3rd, upper nonlinear conductance material equalizing press layer；4th, silicon rubber cluster parachute and shield
Set；5th, lower nonlinear conductance material equalizing press layer；6th, end metal fitting bulb.
Embodiment
Below in conjunction with the accompanying drawings and technical scheme is specifically described embodiment.
Fig. 2 is the structural representation of the composite insulator of the present invention with the equal laminated structure of nonlinear conductance material, such as
Shown in Fig. 2, including end metal fitting ball-and-socket 1, plug 2, silicon rubber cluster parachute and sheath 4 and end metal fitting bulb 6；Plug 2 is by glass
Glass fiber leading-drawing rod is made, for play support and insulating effect, the plug upper and lower side respectively with the end metal fitting ball-and-socket 1 and
End metal fitting bulb 6 is fixedly connected with, and the end metal fitting ball-and-socket 1 and end metal fitting bulb 6 are connected with low-pressure end with high-pressure side respectively；Silicon
Rubber cluster parachute and sheath 4 are wrapped in the outside of plug 2；On being additionally provided between the upper end of plug 2 and silicon rubber cluster parachute and sheath 4
Nonlinear conductance material equalizing press layer 3, is additionally provided with and lower nonlinear conductance between the lower end of plug 2 and silicon rubber cluster parachute and sheath 4
Material equalizing press layer 5；The upper and lower nonlinear conductance material equalizing press layer by zinc oxide ceramics powder granule and silicon rubber it is compound and
Into nonlinear conductance material be made (can use ability conventional fabrication process be made).
The upper nonlinear conductance material equalizing press layer 3 and lower nonlinear conductance material equalizing press layer 5, its length is by compound inslation
Sub- applied voltage grade determines, length range is the length of two groups of full skirts to the length of six groups of full skirts.
The upper nonlinear conductance material equalizing press layer 3 and lower nonlinear conductance material equalizing press layer 5, wherein nonlinear conductance is answered
Condensation material threshold values field strength is determined by insulator applied voltage grade and nonlinear conductance material equalizing press layer physical dimension.
The nonlinear conductance composite, its threshold values field strength is by adjusting zinc oxide ceramics powder granule size and volume
Fraction determines.
Between the zinc oxide ceramics powder granule size is 30-180 μm, the volume of nonlinear conductance material equalizing press layer is accounted for
Percentage is 20%-60%.
Other composition devices of the present invention are identical with the composite insulator of routine.
Embodiment 1
The present embodiment composite insulator is applied in the power system that alternating voltage grade is 220kV, upper nonlinear conductance
The length of material equalizing press layer 3 is two groups of cluster parachutes, and the lower length of nonlinear conductance material equalizing press layer 5 is two groups of cluster parachutes；The non-linear electricity
It is 120-150 μm to lead zinc oxide ceramics powder granule size in composite, accounts for the volume hundred of nonlinear conductance material equalizing press layer
Divide than being 55%.Compared to conventional composite insulator, the present embodiment causes the maximum field strength of high-pressure side to decline 33%, and field strength is uneven
Evenness declines 30%.
Embodiment 2
The present embodiment composite insulator is applied in the power system that alternating voltage grade is 500kV, upper nonlinear conductance
The length of material equalizing press layer 3 is three groups of cluster parachutes, and the lower length of nonlinear conductance material equalizing press layer 5 is two groups of cluster parachutes；The non-linear electricity
It is 50-70 μm to lead zinc oxide ceramics powder granule size in composite, accounts for the volume basis of nonlinear conductance material equalizing press layer
Than for 40%.Compared to conventional composite insulator, the present embodiment causes the maximum field strength of high-pressure side to decline 45%, and field strength is uneven
Degree declines 40%.
Embodiment 3
The present embodiment composite insulator is applied in the power system that alternating voltage grade is 1000kV, upper nonlinear conductance
The length of material equalizing press layer 3 is six groups of cluster parachutes, and the lower length of nonlinear conductance material equalizing press layer 5 is five groups of cluster parachutes；The non-linear electricity
It is 30-50 μm to lead zinc oxide ceramics powder granule size in composite, accounts for the volume basis of nonlinear conductance material equalizing press layer
Than for 30%.Compared to conventional composite insulator, the present embodiment causes the maximum field strength of high-pressure side to decline 55%, and field strength is uneven
Degree declines 45%.
Above-mentioned technical proposal only embodies the optimal technical scheme of technical solution of the present invention, those skilled in the art
Some variations that some of which part may be made are embodied the present invention principle, belong to protection scope of the present invention it
It is interior.
Claims (3)
- A kind of 1. composite insulator with the equal laminated structure of nonlinear conductance material, suitable for AC electric power systems, including end Hardware fittings ball and socket, plug, silicon rubber cluster parachute and sheath and end metal fitting bulb, the plug upper and lower side are golden with the end respectively Tool ball-and-socket and end metal fitting bulb are fixedly connected with, and the end metal fitting ball-and-socket and end metal fitting bulb connect with low-pressure end and high-pressure side respectively Connect；The silicon rubber cluster parachute and sheath are wrapped in the outside plug；Characterized in that, in the plug upper end and silicon rubber umbrella Nonlinear conductance material equalizing press layer is additionally provided between group and sheath, between the plug lower end and silicon rubber cluster parachute and sheath It is additionally provided with lower nonlinear conductance material equalizing press layer；The upper and lower nonlinear conductance material equalizing press layer is by zinc oxide ceramics powder The nonlinear conductance material that particle is combined with silicon rubber is made.
- 2. composite insulator according to claim 1, it is characterised in that the upper nonlinear conductance material equalizing press layer is with Nonlinear conductance material equalizing press layer, its length range are the length of two groups of full skirts to the length of six groups of full skirts.
- 3. composite insulator according to claim 1, it is characterised in that the oxygen in the nonlinear conductance material equalizing press layer Between change zinc ceramic powder granular size is 30-180 μm, the percent by volume for accounting for nonlinear conductance material equalizing press layer is 20%- 60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711047423.9A CN107768045B (en) | 2017-10-31 | 2017-10-31 | A kind of composite insulator with the equal laminated structure of nonlinear conductance material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711047423.9A CN107768045B (en) | 2017-10-31 | 2017-10-31 | A kind of composite insulator with the equal laminated structure of nonlinear conductance material |
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| CN107768045A true CN107768045A (en) | 2018-03-06 |
| CN107768045B CN107768045B (en) | 2019-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711047423.9A Active CN107768045B (en) | 2017-10-31 | 2017-10-31 | A kind of composite insulator with the equal laminated structure of nonlinear conductance material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109694217A (en) * | 2019-01-27 | 2019-04-30 | 湖北工业大学 | Nonlinear conductance composite material and preparation method and application and arrester |
| CN111048266A (en) * | 2019-12-30 | 2020-04-21 | 江东金具设备有限公司 | Anti-crisp composite insulator and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU888217A2 (en) * | 1979-06-06 | 1981-12-07 | Предприятие П/Я А-7186 | High-voltage device |
| CN2575813Y (en) * | 2002-10-08 | 2003-09-24 | 黄维枢 | Fast starting inductance ballast |
| CN1925068A (en) * | 2006-03-03 | 2007-03-07 | 东莞市高能实业有限公司 | Synthesized insulator for ultra-high voltage AC transmission circuit |
| CN102298996A (en) * | 2011-08-31 | 2011-12-28 | 清华大学 | Extra-high voltage composite insulator with uniform electric-field distribution |
| CN103545059A (en) * | 2013-10-29 | 2014-01-29 | 国家电网公司 | Insulator capable of reducing lightning stroke flashover accidents |
| CN107257116A (en) * | 2017-06-19 | 2017-10-17 | 清华大学 | Using the wall bushing of the equal laminated structure of nonlinear conductance composite |
-
2017
- 2017-10-31 CN CN201711047423.9A patent/CN107768045B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU888217A2 (en) * | 1979-06-06 | 1981-12-07 | Предприятие П/Я А-7186 | High-voltage device |
| CN2575813Y (en) * | 2002-10-08 | 2003-09-24 | 黄维枢 | Fast starting inductance ballast |
| CN1925068A (en) * | 2006-03-03 | 2007-03-07 | 东莞市高能实业有限公司 | Synthesized insulator for ultra-high voltage AC transmission circuit |
| CN102298996A (en) * | 2011-08-31 | 2011-12-28 | 清华大学 | Extra-high voltage composite insulator with uniform electric-field distribution |
| CN103545059A (en) * | 2013-10-29 | 2014-01-29 | 国家电网公司 | Insulator capable of reducing lightning stroke flashover accidents |
| CN107257116A (en) * | 2017-06-19 | 2017-10-17 | 清华大学 | Using the wall bushing of the equal laminated structure of nonlinear conductance composite |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109694217A (en) * | 2019-01-27 | 2019-04-30 | 湖北工业大学 | Nonlinear conductance composite material and preparation method and application and arrester |
| CN109694217B (en) * | 2019-01-27 | 2021-07-09 | 湖北工业大学 | Nonlinear conductive composite material, preparation method and application thereof, and lightning arrester |
| CN111048266A (en) * | 2019-12-30 | 2020-04-21 | 江东金具设备有限公司 | Anti-crisp composite insulator and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN107768045B (en) | 2019-08-16 |
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