CN102063972B - Stain discharge characteristic-based direct current suspended composite insulator umbrella skirt structure - Google Patents
Stain discharge characteristic-based direct current suspended composite insulator umbrella skirt structure Download PDFInfo
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- CN102063972B CN102063972B CN2010105424191A CN201010542419A CN102063972B CN 102063972 B CN102063972 B CN 102063972B CN 2010105424191 A CN2010105424191 A CN 2010105424191A CN 201010542419 A CN201010542419 A CN 201010542419A CN 102063972 B CN102063972 B CN 102063972B
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- 239000012212 insulator Substances 0.000 title claims abstract description 71
- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000010276 construction Methods 0.000 claims description 28
- 239000000725 suspension Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 229910052573 porcelain Inorganic materials 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The invention discloses a stain discharge characteristic-based direct current suspended composite insulator umbrella skirt structure, which consists of a plurality of big umbrellas with equal diameters and one or two small umbrellas arranged between every two adjacent big umbrellas, wherein when the two small umbrellas are arranged between the adjacent big umbrellas, the distance between the adjacent big umbrellas is 110 to 130 millimeters; the extension ratio of the big umbrellas to the smallest umbrellas is 1.3 to 2.0, and the average umbrella extension is 65 to 67 millimeters; and the creepage coefficient of the composite insulator is 3.5 to 4.5. Through the umbrella skirt structure parameters of the optimized design, the composite insulator has excellent stain and wet resistance under the condition of the same structure height, and the consumption of an umbrella skirt material for the insulator can be greatly reduced.
Description
Technical field
The invention belongs to the sub-manufacturing technology of High-Voltage Insulation field, particularly a kind of based on the DC suspension type composite insulator umbrella skirt construction that stains flash-over characteristic.
Background technology
Insulator is one of maximum and of paramount importance element of quantity in the electric power system, is the important component part of overhead transmission line, and crucial status is arranged in electric power system.Along with improving constantly of electric pressure, traditional porcelain insulator and glass insulator can not satisfy the requirement of external insulation, perhaps can bring a series of problems such as project cost height.
Series of advantages such as composite insulator is in light weight with it, intensity is high, be difficult for broken, pollution flashover voltage is high, need not zero value detection, be easy to make, transportation, installation and maintenance have been broken the dominant position of pottery, glass insulator, are being widely used in decades recently.
Selecting for use and designing, the key parameter of having recommended the relevant umbrella skirt construction of selecting principle, method and insulator for use to satisfy among the international standard IEC-815 for the regional porcelain insulator of filth.The product of at present main porcelain insulator producer all meets the requirement of IEC-815.The operating experience of filthy regional circuit also proves, based on the insulator of this standard application runnability of satisfaction guaranted basically.
The DC compound insulator umbrella skirt construction comprises that small one and large one is little etc. multiple with one big two; Many users and manufacturer are from the operating experience of traditional porcelain insulator; Simply through stipulating that required creepage distance guarantees that the resistant of synthetic insulator dodges the wet performance of dodging, to umbrella skirt construction values of parameters lack of scientific basis.Because manufacturing process is simple, parameters such as umbrella stretches out through changing, umbrella spacing and umbrella inclination angle, producer almost can produce the synthetic insulator of the required any creepage distance of user under a certain given setting height(from bottom).Because the arc phenomenon of wafing under the direct voltage is serious, umbrella skirt construction to the arc path influence significantly make that the utilance of creepage distance is different, so under same structure height or the identical creepage distance condition, umbrella skirt construction different composite insulator contamination voltage difference is bigger.
Up to the present; Research institution is not arranged both at home and abroad under direct voltage; Composite insulator umbrella skirt construction parameter is carried out system research to the influence of direct current pollution flashover characteristic; Therefore can not be optimized design to DC compound insulator umbrella skirt construction parameter, can not provide the umbrella skirt construction parameter of the optimum of direct current pollution flashover characteristic.
Patent content
Be the above-mentioned defective of avoiding existing composite insulator to exist; It is a kind of based on the DC suspension type composite insulator umbrella skirt construction that stains flash-over characteristic that the present invention provides; It to the umbrella of composite insulator umbrella skirt construction stretch out, parameter such as umbrella spacing carried out optimal design; With the utilance of raising creepage distance and the direct current pollution flashover voltage of unit insulation height, reduce the consumption of insulator full skirt material simultaneously.
Of the present invention is to realize like this based on the DC suspension type composite insulator umbrella skirt construction that stains flash-over characteristic.It is rearranged by the gamp of some equal diameters and a umbellule or two umbellules between the per two adjacent gamps.When establishing a umbellule scheme between the adjacent gamp of employing, adjacent gamp umbrella spacing is 97.5～102.5mm; It is 1.3～2.0 that the gamp umbrella stretches out the ratio that the umbrella with umbellule stretches out, and average umbrella to stretch out be 77～79mm; The creepage coefficient of this composite insulator is 3.5～4.5.When establishing two umbellule schemes between the adjacent gamp of employing, adjacent gamp umbrella spacing is 110～130mm; It is 1.3～2.0 that the gamp umbrella stretches out the ratio that the umbrella with umbellule stretches out, and average umbrella to stretch out be 65～67mm; The creepage coefficient of this composite insulator is 3.5～4.5.
The umbrella that umbrella skirt construction optimal design of the present invention is primarily aimed at big umbellule stretches out the parameter optimizations such as size with the umbrella spacing; And adopt constant voltage tolerance method that it is carried out pollution flashover test; Set up the direct current pollution flashover voltage with different umbrella skirt construction composite insulator umbrellas stretch out, relation between umbrella spacing and the creepage coefficient, and provide the pollution flashover characteristic optimum DC compound insulator umbrella skirt construction parameter.Umbrella skirt construction parameter after this optimal design makes composite insulator under the condition of identical structure height, have excellent resistant wet performance, and can reduce the consumption of insulator full skirt material greatly.
Description of drawings
Fig. 1 is the embodiment of the invention 1 a composite insulator structural representation;
Fig. 2 is the embodiment of the invention 2 composite insulator structural representations;
Fig. 3 a, 3b are that the average umbrella of above-mentioned two embodiment stretches out the relation curve with 50% flashover voltage U;
Fig. 4 a, 4b are respectively above-mentioned two embodiment and stretch out when identical the relation curve of gamp umbrella spacing and 50% flashover voltage U at average umbrella;
Fig. 5 is the creepage coefficient of composite insulator and the relation curve of 50% flashover voltage U.
Embodiment
Specify below in conjunction with the embodiment of the invention.
The present invention through the umbrella that changes the big umbellule of composite insulator stretch out, parameters such as umbrella spacing and umbrella inclination angle, the optimum composite insulator umbrella skirt construction of direct current pollution flashover characteristic is proposed.In conjunction with Fig. 1,2, as follows to the partial parameters explanation of the composite insulator umbrella skirt construction that the present invention relates to:
Full skirt diameter: the external diameter of insulator full skirt.
Umbrella stretches out: the radial distance between insulator full skirt outer and the sheath; Stretch out P like Fig. 1, the middle gamp umbrella shown in 2
1, the umbellule umbrella stretches out P
2
The umbrella spacing: the axial distance between the corresponding points on certain point and the adjacent same relative position same diameter full skirt on the insulator full skirt, like Fig. 1, the gamp umbrella interval S shown in 2
1
Adjacent umbrella spacing: the axial distance between the adjacent full skirt of the insulator lower edge, like Fig. 1, the adjacent umbrella umbrella interval S shown in 2
2
Insulation distance: the axial distance between the gold utensil of insulator two ends.
Creepage distance: between the gold utensil of insulator two ends, along the beeline of all full skirts and jacket surface.
Creepage coefficient CF: the ratio of insulator creepage distance and insulation distance.
As shown in Figure 1, embodiment 1 composite insulator comprises the gold utensil at plug, plug two ends and full skirt and the sheath that mandrel outer covers, and the full skirt part is rearranged adjacent gamp umbrella interval S by the gamp of some equal diameters and a umbellule between the per two adjacent gamps
1Be 97.5～102.5mm; The gamp umbrella stretches out P
1Stretch out P with the umbrella of umbellule
2Ratio be 1.3～2.0, and average umbrella stretches out P
AvBe 77～79mm; The creepage coefficient CF of this composite insulator is 3.5～4.5.Wherein, average umbrella stretches out P
AvBe that the gamp umbrella stretches out P
1Stretch out P with the umbrella of umbellule
2Average, i.e. P
Av=(P
1+ P
2)/2.
Shown in Figure 2, embodiment 2 composite insulators comprise the gold utensil at plug, plug two ends and full skirt and the sheath that mandrel outer covers, and the full skirt part is rearranged adjacent gamp umbrella interval S by the gamp of some equal diameters and two umbellules between the per two adjacent gamps
1Be 110～130mm; The gamp umbrella stretches out P
1Stretch out P with the umbrella of umbellule
2Ratio be 1.3～2.0, and average umbrella stretches out P
AvBe 65～67mm; The creepage coefficient CF of this composite insulator is 3.5～4.5.Wherein, the full skirt diameter of two umbellules can equate also can be unequal, and the full skirt diameter of two umbellules of embodiment 2 equates.Average umbrella stretches out P
AvBe that said gamp umbrella stretches out P
1The umbrella that adds each umbellule between the two adjacent gamps stretches out P
2The average of sum, i.e. P
Av(P
1+ 2P
2)/3.
Below in conjunction with artificial pollution test result the present invention is described further.
1, the average umbrella influence of stretching out
1) embodiment 1 composite insulator
Under the different umbrella spacing conditions, the average umbrella of the composite insulator of different umbrella skirt construction parameters stretches out P
Av(call U in the following text with 50% direct current pollution flashover voltage U
50%, unit K V) relation curve shown in Fig. 3 a, wherein, the gamp umbrella interval S that each curve is corresponding
1Be respectively 90,100,110mm, gamp umbrella interval S
1With adjacent umbrella umbrella interval S
2Ratio be S
1: S
2=2: 1.
Can find out that by Fig. 3 a average umbrella stretches out P
AvTo U
50%Obvious effect: work as P
AvDuring＜78mm, the increase that pollution flashover voltage stretches out with the average umbrella of insulator and increasing gradually; Work as P
AvDuring=78mm, pollution flashover voltage is the value of reaching capacity basically; Work as P
AvDuring＞78mm, the increase with average umbrella stretches out though the decline degree is also not obvious, totally has downward trend.
2) embodiment 2 composite insulators
Under the different umbrella spacing conditions, the average umbrella of the composite insulator of different umbrella skirt construction parameters stretches out P
AvWith U
50%Relation curve shown in Fig. 3 b, wherein, the gamp umbrella interval S that each curve is corresponding
1Be respectively 110,150mm, gamp umbrella interval S
1With adjacent umbrella umbrella interval S
2Ratio be S
1: S
2=3: 1.
Can find out that by Fig. 3 b average umbrella stretches out P
AvTo U
50%Obvious effect: work as P
AvDuring＜66mm, the increase that pollution flashover voltage stretches out with the average umbrella of insulator and increasing gradually, and the rising degree is apparent in view; Work as P
AvDuring=66mm, pollution flashover voltage is the value of reaching capacity basically; Work as P
AvDuring＞66mm, the increase with average umbrella stretches out though the decline degree is also not obvious, totally has downward trend.
Therefore, analyzed and can be drawn by Fig. 3 a, 3b: for embodiment 1 insulator and embodiment 2 insulators, average umbrella stretches out P
AvWhen value was respectively 77～79mm and 65～67mm left and right sides, the pollution flashover characteristic was optimum.
2, the influence of umbrella spacing
1) embodiment 1 insulator
Fig. 4 a stretches out P for embodiment 1 average umbrella
AvWhen identical, gamp umbrella interval S
1With U
50%Relation curve.The following mark explanation of curve among Fig. 4 a, as :-▲-90/66mm, wherein P
1=90mm, P
2=66mm, the P that the curve of band " ▲ " is corresponding
Av=(P
1+ P
2)/2=(90+66)/2=78mm; The P that remaining curve is corresponding
AvAnalogize by corresponding mark.
Visible by Fig. 4 a, when gamp umbrella interval S
1During=100mm, composite insulator has pollution flashover characteristic preferably, and pollution flashover voltage is the highest, chooses gamp umbrella interval S
1Be 97.5-102.5, can meet design requirement.
2) embodiment 2 insulators
Fig. 4 b stretches out P for embodiment 2 average umbrellas
AvWhen identical, gamp umbrella interval S
1With U
50%Relation curve.The mark of curve top explanation among Fig. 4 b, as :-▲-90/54mm, wherein P
1=90mm, P
2=54mm, the P that the curve of band " ▲ " is corresponding
Av=(P
1+ 2P
2)/3=(90+2 * 54)/3=66mm; The P that remaining curve is corresponding
AvAnalogize by corresponding mark.
Visible by Fig. 4 b, when gamp umbrella interval S
1During=110～130mm, the pollution flashover characteristic is optimum.
3, the influence of creepage coefficient
The creepage coefficient of reference composite insulator and 50%U relation curve Fig. 5, when creepage coefficient CF was within 3.2～4.5, the pollution flashover characteristic was better relatively, and pollution flashover voltage can reach maximum.When creepage coefficient CF greater than 4.5 the time, creepage coefficient increases, pollution flashover voltage descends on the contrary.
Above-mentioned result of study shows: the umbrella skirt construction parameter of composite insulator is directly related with the direct current pollution flashover voltage; And present certain rules property; Reasonable optimizing designs composite insulator umbrella skirt construction parameter, can improve the direct current pollution flashover voltage of composite insulator largely.The design of umbrella skirt construction parameter optimization not only can improve the utilance of creepage distance, and the direct current pollution flashover voltage that also improves the unit insulation height largely is more than 25%.
Claims (2)
1. one kind based on the DC suspension type composite insulator umbrella skirt construction that stains flash-over characteristic; Rearrange by the gamp of some equal diameters and two umbellules between the per two adjacent gamps; It is characterized in that: adopt constant voltage tolerance method set up 50% direct current pollution flashover voltage with the average umbrella of the composite insulator of different umbrella skirt constructions stretch out, relation curve between umbrella spacing and the creepage coefficient, and then optimize this composite insulator umbrella skirt construction parameter of confirming and be: adjacent gamp umbrella spacing is 110～130mm; It is 1.3～2.0 that the gamp umbrella stretches out the ratio that the umbrella with umbellule stretches out, and average umbrella to stretch out be 65～67mm; The creepage coefficient of this composite insulator is 3.5～4.5;
Wherein, to stretch out be that said gamp umbrella stretches out the average that the umbrella that adds each umbellule between the two adjacent gamps stretches out sum to this average umbrella.
According to claim 1 based on the DC suspension type composite insulator umbrella skirt construction that stains flash-over characteristic, it is characterized in that: the full skirt equal diameters of said two umbellules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105424191A CN102063972B (en) | 2007-12-21 | 2007-12-21 | Stain discharge characteristic-based direct current suspended composite insulator umbrella skirt structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105424191A CN102063972B (en) | 2007-12-21 | 2007-12-21 | Stain discharge characteristic-based direct current suspended composite insulator umbrella skirt structure |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101253036A Division CN101369476B (en) | 2007-12-21 | 2007-12-21 | DC suspension type composite insulator umbrella skirt structure based on contaminated discharge property |
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| Publication Number | Publication Date |
|---|---|
| CN102063972A CN102063972A (en) | 2011-05-18 |
| CN102063972B true CN102063972B (en) | 2012-03-21 |
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ID=43999205
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105424191A Active CN102063972B (en) | 2007-12-21 | 2007-12-21 | Stain discharge characteristic-based direct current suspended composite insulator umbrella skirt structure |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231310B (en) * | 2011-05-31 | 2012-09-12 | 河北新华高压电器有限公司 | Bar-shaped composite insulator for electronic railway connecting net plane |
| CN105931766A (en) * | 2016-07-04 | 2016-09-07 | 安徽天达网络科技有限公司 | Composite needle type insulator |
| CN106971025B (en) * | 2017-03-03 | 2020-03-27 | 国网浙江省电力公司电力科学研究院 | Method for determining effective utilization coefficient of creepage distance of composite insulator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1289131A (en) * | 2000-10-27 | 2001-03-28 | 清华大学 | Umbrella structure of composite insulator |
| CN2872556Y (en) * | 2006-02-10 | 2007-02-21 | 南方电网技术研究中心 | Synthetic insulator with air dynamic umbrella-style design |
-
2007
- 2007-12-21 CN CN2010105424191A patent/CN102063972B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1289131A (en) * | 2000-10-27 | 2001-03-28 | 清华大学 | Umbrella structure of composite insulator |
| CN2872556Y (en) * | 2006-02-10 | 2007-02-21 | 南方电网技术研究中心 | Synthetic insulator with air dynamic umbrella-style design |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平6-245358A 1994.09.02 |
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|---|---|
| CN102063972A (en) | 2011-05-18 |
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Address after: 510623 No.6, Huasui Road, Zhujiang New Town, Tianhe District, Guangzhou City, Guangdong Province Patentee after: POWER GRID TECHNOLOGY RESEARCH CENTER. CHINA SOUTHERN POWER GRID Patentee after: Tsinghua Shenzhen International Graduate School Address before: 510623 No.6, Huasui Road, Zhujiang New Town, Tianhe District, Guangzhou City, Guangdong Province Patentee before: POWER GRID TECHNOLOGY RESEARCH CENTER. CHINA SOUTHERN POWER GRID Patentee before: GRADUATE SCHOOL AT SHENZHEN, TSINGHUA University |
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Effective date of registration: 20210903 Address after: 510700 3rd, 4th and 5th floors of building J1 and 3rd floor of building J3, No.11 Kexiang Road, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee after: China South Power Grid International Co.,Ltd. Patentee after: Tsinghua Shenzhen International Graduate School Address before: 510623 No.6, Huasui Road, Zhujiang New Town, Tianhe District, Guangzhou City, Guangdong Province Patentee before: POWER GRID TECHNOLOGY RESEARCH CENTER. CHINA SOUTHERN POWER GRID Patentee before: Tsinghua Shenzhen International Graduate School |