CN101527194B - Contamination-flashover resistance method and contamination-flashover resistance insulated device for rapid contamination accumulation - Google Patents
Contamination-flashover resistance method and contamination-flashover resistance insulated device for rapid contamination accumulation Download PDFInfo
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- CN101527194B CN101527194B CN2008101013003A CN200810101300A CN101527194B CN 101527194 B CN101527194 B CN 101527194B CN 2008101013003 A CN2008101013003 A CN 2008101013003A CN 200810101300 A CN200810101300 A CN 200810101300A CN 101527194 B CN101527194 B CN 101527194B
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000011109 contamination Methods 0.000 title abstract description 9
- 238000009825 accumulation Methods 0.000 title abstract 6
- 239000012212 insulator Substances 0.000 claims abstract description 121
- 229910052573 porcelain Inorganic materials 0.000 claims description 67
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- 229920000965 Duroplast Polymers 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract 1
- 229910052705 radium Inorganic materials 0.000 abstract 1
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 229920002379 silicone rubber Polymers 0.000 description 4
- 230000001131 transforming effect Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000003373 anti-fouling effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- 238000001556 precipitation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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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
- H01B17/52—Insulators or insulating bodies characterised by their form having cleaning devices
- H01B17/525—Self-cleaning, e.g. by shape or disposition of screens
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Abstract
The invention provides a contamination-flashover resistance method and a contamination-flashover resistance insulated device for rapid contamination accumulation. The contamination-flashover resistance insulated device comprises an insulator having a plurality of insulator umbrella skirts and at least one rapid contamination accumulation contamination-flashover resistance umbrella skirt, wherein the rapid contamination accumulation contamination-flashover resistance umbrella skirt is arranged coaxially with the insulator umbrella skirts and the radium of the outer circle of the rapid contamination accumulation contamination-flashover resistance umbrella skirt is larger than the radius of the outer circles of the insulator umbrella skirts, and the contamination-flashover resistance umbrella skirt is quickly accumulated and forms an organic whole molding with the insulator so as to solve the problem of contamination-flashover caused by rapid contamination accumulation.
Description
Technical field
Invention about the long-pending fast dirty anti-pollution flashover technology of insulator surface, is a kind of long-pending fast dirty anti-pollution flashover method and anti-pollution flashover seal particularly about the anti-pollution flashover technology of electric power system concretely.
Background technology
The power transmission and transforming equipment pollution flashover must possess two big key elements: filthy condition and wet condition.The anti-pollution flashover standard that electric power system extensively adopts---no matter be GB/T16434-1996 or Q/GDW152-2006 all mainly based on routine, slow long-pending dirty notion and working out, anti-accordingly pollution flashover measure also is primarily aimed at slowly long-pending dirty form and designs.So-called " slowly long-pending dirty " refers to that the required filthy composition of insulator contamination is progressively to accumulate acquisition through a relatively long process, as: 1 year long-pending dirty phase of GB/G16434-1996 regulation and 3 years long-pending dirty phases of Q/GDW152-2006 regulation; And the required wet condition of insulator contamination is provided by precipitation (comprising mist, rain, dew, ice, snow etc.).
In the prior art, slowly the most effectively prophylactico-therapeutic measures of long-pending pollution flashover network is to adopt the anti-pollution flashover product of silicone rubber kinds, comprises composite insulator, antifouling flush paint etc.As shown in Figure 1, be existing insulator with full skirt.Fig. 2 is the sketch map of the amplification of insulator shown in Figure 1.Wherein insulator 301 has full skirt 302 and full skirt 303, and the radius of full skirt 302 can be slightly larger than full skirt 303, and the size of a kind of embodiment is: the radius of insulator 301 is 60mm, and the radius of full skirt 302 is 115mm, and the radius of full skirt 303 is 130mm.When the radius of full skirt 302 equals the radius of full skirt 303, just form the shape of insulator shown in Figure 3.
Climate change in recent years is bigger, and the arid and the sandstorm weather that continue make filthy particles such as being full of dust in the atmosphere, and thing followed rainfall or snowfall fall these filthy particle bands, makes clean originally rain, snow not land as yet and become dirty rain or dirty snow.This sleet drops on and causes short time inner insulator surface long-pending fast dirty on the power transmission and transforming equipment; When amassing dirt fast; Dirty rain or dirty snow also provide wet condition for insulator surface; Wherein snowfall particularly the snowfall under the ambient temperature above zero more sufficient wet condition can be provided, fast long-pending dirt follows the special pollution flashover that causes of making moist fast that the trend of growth will be arranged in this short time.Under the situation of long-pending dirt fast; The anti-pollution flashover product of insulator shown in Figure 1 and silicone rubber kinds can not effectively prevent pollution flashover; Because the radius of full skirt is less, accumulated snow causes the snow that falls between each full skirt to be communicated with rapidly fast, and flashover phenomenon shown in figure 12 takes place easily.
Electric power scientific and technological achievement storehouse, the whole nation disclosed " application of the antifouling full skirt of electroceramics spare (achievement registration number: Jiangxi-1991-108) ", " atmospheric dispersion influence that power transmission and transforming equipment is polluted (achievement registration number: northeast-1998-008) ", " atmospheric environment to the power transmission and transforming equipment anti-soil dodge the influence of ability and the research of anti-pollution flashover measure (achievement numbering: Hubei-1995-025) " and " XWP-210 double-layer umbrella resistant suspension disc insulator (achievement numbering: ZK-1999-009650) ";
21 volume 4 phases disclosed " the acidic wet sedimentation is to the sign quantity research of insulator arc-over properties influence " of " Proceedings of the CSEE " calendar year 2001;
" coloured equipment " 4 phases in 2004 disclosed " exchanging long-pending dirty the analysis and anti-pollution flashover measure of insulator surface ";
" forestry labor safety " 2005 18 volume 3 phases disclosed " the pollution flashover problem and the protection of electric power system ";
" IEEE power engineering comment (PER) " 12 phases in 1999 are disclosed
An Artificial Contamination Method for Composite Insulators
" IEEE dielectric and electric insulation transactions (DEI) " 04 phase in 2004 is disclosed
A New Flashover Dynamic Model of Polluted HV Insulators
The disclosed content of above-mentioned prior art file is incorporated in this, with the prior art as invention.
Summary of the invention
The present invention provides a kind of anti-pollution flashover seal, to solve the long-pending fast dirty pollution flashover problem that is produced.
One of the object of the invention purpose provides: a kind of long-pending fast dirty anti-pollution flashover method, and described method comprises: at least three long-pending fast dirty anti-pollution flashover full skirts are set on post insulator with a plurality of insulator full skirts or porcelain bushing; Described long-pending fast dirty anti-pollution flashover full skirt and described post insulator or the coaxial setting of porcelain bushing full skirt, and the peripheral radius of said long-pending dirty anti-pollution flashover full skirt fast is greater than the peripheral radius of said post insulator or porcelain bushing full skirt; Long-pending fast dirty anti-pollution flashover full skirt and described post insulator or porcelain bushing are one-body molded; For post insulator or the porcelain bushing of average diameter less than 300mm, requiring described long-pending fast dirty anti-pollution flashover full skirt overhang is 80mm to 100mm, and described overhang is meant the amount that exceeds beyond the porcelain patticoat;
For post insulator or the porcelain bushing of average diameter greater than 300mm, requiring described long-pending fast dirty anti-pollution flashover full skirt overhang is 120mm to 150mm, and described overhang is meant the amount that exceeds beyond the porcelain patticoat.
Two of the purpose of invention provides a kind of anti-pollution flashover seal, and described anti-pollution flashover seal comprises: post insulator or porcelain bushing, described post insulator or porcelain bushing have a plurality of insulator full skirts; Described anti-pollution flashover seal also comprises: at least three long-pending fast dirty anti-pollution flashover full skirts; Described long-pending fast dirty anti-pollution flashover full skirt and described post insulator or the coaxial setting of porcelain bushing full skirt, and the peripheral radius of said long-pending dirty anti-pollution flashover full skirt fast is greater than the peripheral radius of said post insulator or porcelain bushing full skirt; Long-pending fast dirty anti-pollution flashover full skirt and described post insulator or porcelain bushing are one-body molded; For post insulator or the porcelain bushing of average diameter less than 300mm, requiring described long-pending fast dirty anti-pollution flashover full skirt overhang is 80mm to 100mm, and described overhang is meant the amount that exceeds beyond the porcelain patticoat;
For post insulator or the porcelain bushing of average diameter greater than 300mm, requiring described long-pending fast dirty anti-pollution flashover full skirt overhang is 120mm to 150mm, and described overhang is meant the amount that exceeds beyond the porcelain patticoat.
The beneficial effect of the invention is: through on insulator, installing or add big disk track full skirt additional, improve the insulator profile, so that contrive equipment produces the partition effect to accumulated snow, avoid forming continuous accumulated snow, reach the clog snow effect of long-pending pollution flashover network fast that prevents.
Description of drawings
Fig. 1 is the insulator sketch map of prior art;
Fig. 2 is the sketch map of Fig. 1 after amplifying;
Fig. 3 is the structural representation of inventive embodiments 1;
Fig. 4 is the sketch map of Fig. 3 after amplifying;
Fig. 5 is the structural representation of inventive embodiments 2;
Fig. 6 is the sketch map of Fig. 5 after amplifying;
Fig. 7 is the structural representation of inventive embodiments 3;
Fig. 8 is the sketch map of insulator behind the snowberg of contrive equipment;
Fig. 9 is the transverse cross-sectional view of long-pending dirty anti-pollution flashover full skirt fast of contrive equipment;
Figure 10 is the longitudinal sectional drawing of long-pending dirty anti-pollution flashover full skirt fast of contrive equipment;
Figure 11 is contrive equipment and prior art insulator contrast test sketch map;
Figure 12 a, Figure 12 b and Figure 12 c are the long-pending fast dirty sketch map of preventing the pollution flashover full skirt;
Figure 13 is an effect sketch map after contrive equipment and the prior art insulator contrast test.
Embodiment
Embodiment below in conjunction with the description of drawings invention.
Embodiment 1
As shown in Figure 3, be the anti-pollution flashover seal of the kind of present embodiment, this anti-pollution flashover seal comprises: porcelain insulator, described insulator have 26 insulator full skirts; Described anti-pollution flashover seal also comprises: 3 long-pending fast dirty anti-pollution flashover full skirts 401; Described long-pending fast dirty anti-pollution flashover full skirt 401 and the coaxial setting of described insulator full skirt; And the peripheral radius of said long-pending dirty anti-pollution flashover full skirt fast is greater than the peripheral radius of said insulator full skirt; Described three long-pending fast dirty installation positions of preventing pollution flashover full skirt 401 are respectively in insulator top and two third-class offices, that is: the distance of 3 L equates.Long-pending fast dirty anti-pollution flashover full skirt is the silicon rubber material.
Porcelain insulator selects for use XAP550S/444 type lightning arrester sleeve pipe as the insulator (interior column diameter 350mm, gamp girth 1500mm) of average diameter greater than 300mm respectively, selects for use long rod insulator insulator as the insulator of average diameter less than 300mm.
To amass dirty anti-pollution flashover full skirt fast by specified quantity and position and be bonded on the insulator, wherein average diameter is not less than 12cm greater than the full skirt overhang of the lightning arrester sleeve pipe of 300mm; Average diameter is not less than 10cm less than the full skirt overhang of the rod insulator insulator of 300mm.
Like Fig. 4, Fig. 9, (the silicon rubber full skirt among the figure is long-pending fast dirty anti-pollution flashover full skirt) shown in Figure 10; R0 is a long-pending fast dirty anti-pollution flashover full skirt outer radius; R1 be in the fast long-pending dirty anti-pollution flashover full skirt along radius, r0 is the big full skirt of a lightning arrester outer radius, r1 is a column radius in the lightning arrester insulator.Optional parameter is: the lightning arrester sleeve pipe: gamp outer radius r 0=24cm, long-pending fast dirty anti-pollution flashover full skirt outer radius R 0=35cm.Rod type suspension insulator: gamp outer radius r 0=10.4cm, long-pending fast dirty anti-pollution flashover full skirt outer radius R 0=22.3cm.
The long-pending fast dirty adhesive strength of preventing the pollution flashover full skirt of the big or small directly influence of bond area between the porcelain full skirt of long-pending fast dirty anti-pollution flashover full skirt and insulator.Exist under the situation of thicker accumulated snow,, quick long-pending dirt is prevented that the adhesive strength of pollution flashover full skirt requires also high more along with quick long-pending dirt prevents that the pollution flashover full skirt bears pressure and increases.If bond area is too small, adhesive strength is not enough, and deformation takes place the full skirt extension more easily on the one hand, and cracking phenomena possibly take place the full skirt root on the other hand, influences the life-span and the effect of full skirt.
In order to ensure the no accumulated snow district under the long-pending fast dirty anti-pollution flashover full skirt of big disk track, the size of long-pending dirty anti-pollution flashover full skirt can be selected as follows fast:
1. average diameter is less than post insulator, the porcelain bushing of 300mm, and requiring the long-pending fast dirty anti-pollution flashover full skirt overhang of big disk track (exceeding the amount beyond the porcelain patticoat) is 80～100mm;
2. average diameter is greater than post insulator, the porcelain bushing of 300mm, and requiring the long-pending fast dirty anti-pollution flashover full skirt overhang of big disk track (exceeding the amount beyond the porcelain patticoat) is 120～150mm.
Above-mentioned size is to confirm according to the needs of actual motion; Selecting long-pending fast dirty anti-pollution flashover full skirt overhang according to the insulator diameter, mainly is to consider that the major diameter insulator more is prone to accumulated snow, and pollution flashover danger is bigger; Therefore select bigger umbrella overhang, to avoid forming continuous accumulated snow.
The post insulator average diameter of present embodiment is 190mm≤300mm, and the long-pending fast dirty anti-actual overhang of being installed of pollution flashover full skirt is 90mm.
Embodiment 2
Like Fig. 5, shown in Figure 6, be the anti-pollution flashover seal of the kind of present embodiment, this anti-pollution flashover seal comprises: porcelain insulator, described insulator have 25 insulator full skirts and 1 long-pending fast dirty anti-pollution flashover full skirt 601; Described fast long-pending dirty anti-pollution flashover full skirt 601 is one-body molded with described insulator, and with the coaxial setting of described insulator full skirt, and the peripheral radius of said long-pending dirty anti-pollution flashover full skirt fast is greater than the peripheral radius of said insulator full skirt.Insulator is porcelain material or duroplasts material with amassing dirty anti-pollution flashover full skirt fast.
As long as the length that long-pending fast dirty anti-pollution flashover full skirt stretches out outside the porcelain full skirt reaches porcelain full skirt extension elongation.In order to ensure the no accumulated snow district under the long-pending fast dirty anti-pollution flashover full skirt of big disk track, the size of long-pending dirty anti-pollution flashover full skirt can be selected as follows fast:
1. average diameter is less than post insulator, the porcelain bushing of 300mm, and requiring the long-pending fast dirty anti-pollution flashover full skirt overhang of big disk track (exceeding the amount beyond the porcelain patticoat) is 80～100mm;
2. average diameter is greater than post insulator, the porcelain bushing of 300mm, and requiring the long-pending fast dirty anti-pollution flashover full skirt overhang of big disk track (exceeding the amount beyond the porcelain patticoat) is 120～150mm.
Above-mentioned size is to confirm according to the needs of actual motion; Selecting long-pending fast dirty anti-pollution flashover full skirt overhang according to the insulator diameter, mainly is to consider that the major diameter insulator more is prone to accumulated snow, and pollution flashover danger is bigger; Therefore select bigger umbrella overhang, to avoid forming continuous accumulated snow.
Shown in Figure 12 a, Figure 12 b and Figure 12 c, long-pending fast dirty anti-pollution flashover full skirt is the circular cone shape body; The perforation that is axially arranged with at said circular cone shape body is provided with breach on the circular cone shape body, so that described long-pending fast dirty anti-pollution flashover full skirt is placed on the described insulator bonding then breach.
Embodiment 3
As shown in Figure 7, be the anti-pollution flashover seal of the kind of present embodiment, this anti-pollution flashover seal comprises: porcelain insulator, described insulator have 23 insulator full skirts and 3 long-pending fast dirty anti-pollution flashover full skirts 601; Described fast long-pending dirty anti-pollution flashover full skirt 601 is one-body molded with described insulator, and with the coaxial setting of described insulator full skirt, and the peripheral radius of said long-pending dirty anti-pollution flashover full skirt fast is greater than the peripheral radius of said insulator full skirt.The installation positions of described three anti-pollution flashover full skirts 601 of long-pending fast dirt are respectively in insulator top and two third-class offices, and insulator and the anti-pollution flashover full skirt of long-pending fast dirt are porcelain material or duroplasts material or other material that insulate.
In order to ensure the no accumulated snow district under the long-pending fast dirty anti-pollution flashover full skirt of big disk track, the size of long-pending dirty anti-pollution flashover full skirt can be selected as follows fast:
1. average diameter is less than post insulator, the porcelain bushing of 300mm, and requiring the long-pending fast dirty anti-pollution flashover full skirt overhang of big disk track (exceeding the amount beyond the porcelain patticoat) is 80～100mm;
2. average diameter is greater than post insulator, the porcelain bushing of 300mm, and requiring the long-pending fast dirty anti-pollution flashover full skirt overhang of big disk track (exceeding the amount beyond the porcelain patticoat) is 120～150mm.
Above-mentioned size is to confirm according to the needs of actual motion; Selecting long-pending fast dirty anti-pollution flashover full skirt overhang according to the insulator diameter, mainly is to consider that the major diameter insulator more is prone to accumulated snow, and pollution flashover danger is bigger; Therefore select bigger umbrella overhang, to avoid forming continuous accumulated snow.
As shown in Figure 8, be the sketch map behind the snowberg of contrive equipment, in order to verify the actual effect of contrive equipment and existing insulator, the spy makes following snowberg flashover test:
Shown in figure 11, contrive equipment and existing insulator are under the homoclime environment, concrete steps are following:
(a) in above-mentioned snowberg test; Make pillar porcelain insulator and fully snowberg (snow-broth conductivity 2000 μ S/cm) is installed on the pillar porcelain insulator of long-pending dirty anti-pollution flashover full skirt fast, accumulated snow is piled up and is formed complete connected state at the windward side of big umbellule anti-fouling type pillar porcelain insulator.
(b) stop snowfall.
(c) pillar porcelain insulator of long-pending dirty anti-pollution flashover full skirt is connected in parallel with installing fast with pillar porcelain insulator, and high-pressure side is connected to the industrial frequency experiment power supply.
(d) on insulator, apply constant power-frequency voltage 73kV.
(e) the rising ambient temperature is to+5 ℃.
(f) observe pillar porcelain insulator and the snow melting situation of the pillar porcelain insulator of long-pending dirty anti-pollution flashover full skirt fast is installed, whether flashover or until snow melting and all run off.
(g) repeat above-mentioned test procedure, reduce to test accidental error.
(i) change insulator or adjust other test parameters, repeating step a～f.
Shown in figure 13, the pillar porcelain insulator flashover; The insulator discharge off of long-pending dirty anti-pollution flashover full skirt fast is installed, is not also had obvious discharging sound.
Above embodiment only is used for the explanation invention, but not is used for limiting invention.
Claims (6)
1. a long-pending fast dirty anti-pollution flashover method is characterized in that described method comprises: at least three long-pending fast dirty anti-pollution flashover full skirts are set on post insulator with a plurality of insulator full skirts or porcelain bushing; Described long-pending fast dirty anti-pollution flashover full skirt and described post insulator or the coaxial setting of porcelain bushing full skirt, and the peripheral radius of said long-pending dirty anti-pollution flashover full skirt fast is greater than the peripheral radius of said post insulator or porcelain bushing full skirt;
Described long-pending fast dirty anti-pollution flashover full skirt and described post insulator or porcelain bushing are one-body molded;
For post insulator or the porcelain bushing of average diameter less than 300mm, requiring described long-pending fast dirty anti-pollution flashover full skirt overhang is 80mm to 100mm, and described overhang is meant the amount that exceeds beyond the porcelain patticoat;
For post insulator or the porcelain bushing of average diameter greater than 300mm, requiring described long-pending fast dirty anti-pollution flashover full skirt overhang is 120mm to 150mm, and described overhang is meant the amount that exceeds beyond the porcelain patticoat.
2. method according to claim 1 is characterized in that, described three long-pending fast dirty anti-pollution flashover full skirts are separately positioned on the upper, middle and lower of said post insulator or porcelain bushing.
3. method according to claim 2 is characterized in that, described post insulator and long-pending fast dirty anti-pollution flashover full skirt are porcelain material or duroplasts material.
4. anti-pollution flashover seal, described anti-pollution flashover seal comprises: post insulator or porcelain bushing, described post insulator or porcelain bushing have a plurality of insulator full skirts; It is characterized in that described anti-pollution flashover seal also comprises: at least three long-pending fast dirty anti-pollution flashover full skirts;
Described long-pending fast dirty anti-pollution flashover full skirt and described post insulator or the coaxial setting of porcelain bushing full skirt, and the peripheral radius of said long-pending dirty anti-pollution flashover full skirt fast is greater than the peripheral radius of said post insulator or porcelain bushing full skirt;
Described long-pending fast dirty anti-pollution flashover full skirt and described post insulator or porcelain bushing are one-body molded;
For post insulator or the porcelain bushing of average diameter less than 300mm, requiring described long-pending fast dirty anti-pollution flashover full skirt overhang is 80mm to 100mm, and described overhang is meant the amount that exceeds beyond the porcelain patticoat;
For post insulator or the porcelain bushing of average diameter greater than 300mm, requiring described long-pending fast dirty anti-pollution flashover full skirt overhang is 120mm to 150mm, and described overhang is meant the amount that exceeds beyond the porcelain patticoat.
5. anti-pollution flashover seal according to claim 4 is characterized in that, described three long-pending fast dirty anti-pollution flashover full skirts are respectively formed at the upper, middle and lower of said post insulator or porcelain bushing.
6. anti-pollution flashover seal according to claim 5 is characterized in that, described post insulator and long-pending fast dirty anti-pollution flashover full skirt are porcelain material or duroplasts material or other insulation material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101013003A CN101527194B (en) | 2008-03-04 | 2008-03-04 | Contamination-flashover resistance method and contamination-flashover resistance insulated device for rapid contamination accumulation |
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| CN2008101013003A CN101527194B (en) | 2008-03-04 | 2008-03-04 | Contamination-flashover resistance method and contamination-flashover resistance insulated device for rapid contamination accumulation |
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| CN101527194B true CN101527194B (en) | 2012-05-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105931766A (en) * | 2016-07-04 | 2016-09-07 | 安徽天达网络科技有限公司 | Composite needle type insulator |
| CN110554071A (en) * | 2019-08-28 | 2019-12-10 | 华南理工大学 | System and method for detecting hydrophobicity of contaminated insulator based on phase angle difference method |
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| DD283009A5 (en) * | 1989-05-05 | 1990-09-26 | Orgreb Inst Kraftwerke | ARRANGEMENT FOR PREVENTING IRONING OF THE SCREENS OF VERTICAL HIGH VOLTAGE RELIEF INSULATORS |
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- 2008-03-04 CN CN2008101013003A patent/CN101527194B/en active Active
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