CN1289131A - Umbrella structure of composite insulator - Google Patents
Umbrella structure of composite insulator Download PDFInfo
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- CN1289131A CN1289131A CN 00130075 CN00130075A CN1289131A CN 1289131 A CN1289131 A CN 1289131A CN 00130075 CN00130075 CN 00130075 CN 00130075 A CN00130075 A CN 00130075A CN 1289131 A CN1289131 A CN 1289131A
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- 239000012212 insulator Substances 0.000 title claims abstract description 104
- 239000002131 composite material Substances 0.000 title claims description 57
- 239000000463 material Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 229910052573 porcelain Inorganic materials 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 5
- 238000009422 external insulation Methods 0.000 description 5
- 238000010891 electric arc Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000005413 snowmelt Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The present invention relates to the field of high-voltage insulator manufacture technology, and is characterized by that it contains several large umbrellas with identical diameter, and between every two adjacent large umbrellas two or more small umbrellas are arranged, and the extension of umbrella is not less than 20 mm, and the spacing distance between two adjacent umbrellas is not less than 25 mm, and the leakage distance provided by small umbrella is greater than provided by large umbrella, and the ratio of extension of large umbrella and the extension of minimum umbrella not less than 1.5 to 1.8. This insulator with umbrella structure not only possesses excellent contamination-resisting and wet-resisting property, but also can implement higher leakage distance, so that it can greatly reduce the umbrella petticoat material consumption of insulator.
Description
The invention belongs to the sub-manufacturing technology of High-Voltage Insulation field, particularly umbrella structure of composite insulator design.
Composite insulator claims synthetic insulator, organic insulation, non-porcelain insulator, rubber-covered, polymer insulator again.Product as the update of traditional porcelain insulator, composite insulator with its excellent resistant wet performance, high specific strength, shock-resistant, operation maintenance convenient and intrinsic characteristics such as anti-breakdown type structure, obtained a large amount of uses in various countries' electric power system since the eighties.Excellent resistant wet performance is the major reason that electric power operation department of multinational family selects composite insulator for use.Composite insulator is used to all kinds of medium and heavy pollution is regional, has effectively prevented the frequent pollution flashover accident that takes place of original porcelain insulator, and has reduced the operation maintenance workload of filthy regional power transmission and transforming equipment greatly.
Except natural atmospheric pollution level and meteorological condition, the external insulation performance of composite insulator depends on the hydrophobicity and the external insulation structure design of material.Under the acting in conjunction of environment and electric stress, the hydrophobicity of material may temporarily weaken even completely lose, and the quality of beveled structure determined the external insulation performance of composite insulator and influenced the process of The Ageing of Insulators this moment.Therefore beveled structure is composite insulator design and the key factor that must consider when selecting for use.
In fact, the design of composite insulator does not at present still have the international and domestic standard that is similar to porcelain insulator IEC815 with selecting for use, standard recommendation such as IEC815 the key parameter of selecting for use principle and external insulation structure should satisfy in designing of filthy regional porcelain insulator.And report also seldom about the research of the external insulation property influence of umbrella structure of composite insulator both at home and abroad.Therefore, the electric power system user can only be based on the operating experience of original porcelain insulator to selecting for use of composite insulator.
From the angle of producing, the composite insulator manufacturing process is simple, almost can low cost carry out multiple design, so the design of different manufacturers product often has very big-difference.Existing composite insulator can roughly be divided into two classes according to beveled structure: isometrical umbrella structure composite insulator and big umbellule structure composite insulator, respectively as shown in Figure 1 and Figure 2.Fig. 3 is the local enlarged diagram of full skirt 2 and sheath 3.At first describe several key parameters of umbrella structure of composite insulator, be defined as follows in conjunction with each figure:
Full skirt diameter: the diameter of insulator full skirt 2;
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 2;
Umbrella stretches out: the radial distance between insulator full skirt outer 21 and the sheath 3;
Insulation distance: the axial distance between the insulator two ends gold utensil 11,12;
Leakage distance: between the insulator two ends gold utensil 11,12, along the beeline on all full skirts 2 and sheath 3 surfaces.The leakage distance of selecting to adapt with running environment according to relevant criterion and operating experience is the main foundation that filthy regional porcelain insulator is selected for use.Many operations department compares the angle that is easy to wear out from composite insulator with porcelain insulator, consider service conditions the most serious when hydrophobicity completely loses, and requires composite insulator to have the leakage distance close or higher with porcelain insulator.
Creep distance coefficient: the ratio of insulator leakage distance and insulation distance.
Except that above-mentioned parameter, also have several special parameters for the composite insulator of big umbellule structure shown in Figure 2:
Gamp leakage distance: all gamp full skirt 2 creepage distance sums of composite insulator
Umbellule leakage distance: all umbellule full skirt 4 creepage distance sums of composite insulator;
Adjacent umbrella spacing: the axial distance between the adjacent full skirt of the composite insulator lower edge 22.
At present, full skirt 2 diameters of isometrical umbrella structure composite insulator shown in Figure 1 are generally 80 millimeters ~ 200 millimeters.When use in filthy area, in order to satisfy the more requirement of high-leakage distance, producer mainly increases the leakage distance of composite insulator by the method that strengthens full skirt diameter, compression umbrella spacing, because all full skirt diameters are identical, come in a large number under the water condition at heavy rain, snow melt, molten ice etc., isometrical umbrella structure is unfavorable for suppressing electric arc bridge joint between umbrella that continuous moisture film, current cause, on the contrary may since between serious umbrella bridge joint cause the decline of insulator overall performance.
Fig. 2 is the typical structure schematic diagram of big umbellule insulator, adopts small one and large one full skirt configuration.Full skirt 2 diameters of existing product gamp are generally at 100～200 millimeters, and umbellule full skirt 4 diameters are generally 80～150 millimeters, and the gamp umbrella stretches out the ratio that stretches out with the umbellule umbrella and is generally less than 1.5.For Fig. 2 insulator, the leakage distance that the leakage distance that gamp 2 provides obviously provides greater than umbellule 4.Equally, in order to satisfy operation department to the more requirement of high-leakage distance, often by strengthening the full skirt diameter, the method for compression umbrella spacing increases the leakage distance of composite insulator in producer.Because gamp provides main leakage distance in this structure, therefore the result who does so at first is the consumption that has significantly increased the full skirt material, has increased manufacturing cost.What is more important, this design can only increase the leakage distance of insulator to a certain extent, improves the dirty performance of resistant of insulator.When distance is too small between, umbrella excessive when the full skirt diameter, outwardly, leakage distance has had very big increase, but because equivalent diameter increases and possible bridge joint makes the utilance of leakage distance reduce, not only sudden strain of a muscle of the rain of insulator or pollution flashover performance obviously do not increase, on the contrary might saturated even decline.In addition, in known designs since gamp stretch out with umbellule stretch out smaller, gamp suppresses bridge joint between umbrella, prevents that the effect of serious icing snowberg and retardance electric arc serial connection is outstanding, the design that needs to be optimized.
The objective of the invention is for overcoming the weak point of prior art, a kind of umbrella structure of composite insulator of optimization is proposed, the composite insulator of this beveled structure is rearranged by the gamp of some equal diameters and the two or more umbellules between the per two adjacent gamps, wherein umbellule is used to the leakage distance that provides main, and gamp then works to prevent bridge joint between umbrella, prevents serious icing snowberg and retardance electric arc serial connection.The insulator of this beveled structure can be realized higher leakage distance, and greatly reduce the consumption of insulator full skirt material under the prerequisite that guarantees excellent resistant wet performance under given insulation distance.
A kind of umbrella structure of composite insulator that the present invention proposes, it is characterized in that, rearranged by the gamp of some equal diameters and the two or more umbellules between the per two adjacent gamps, said umbrella stretches out and is not less than 20 millimeters, and adjacent umbrella spacing all is not less than 25 millimeters; The leakage distance that the leakage distance that is provided by umbellule provides greater than gamp; This composite insulator creep distance coefficient is more than or equal to 3.5 o'clock, and the gamp umbrella stretches out the ratio that the umbrella with umbellule stretches out and is not less than 1.5; If this creep distance coefficient is less than 3.5 o'clock, the gamp umbrella stretches out the ratio that the umbrella with umbellule stretches out and is not less than 1.8.
The full skirt equal diameters of said composite insulator umbellule also can be unequal.
Umbrella structure of composite insulator of the present invention can be widely used in and exchange 110kV and above electric pressure, the composite rod insulator of direct current 100kV and above electric pressure, cross-arm composite insulator, post composite insulator, compound cover lightning arrester, Interphase Composite Spacer etc.
Characteristics of the present invention and effect:
The present invention provides the mentality of designing of main leakage distance to make the equivalent diameter of synthetic insulator obviously reduce by umbellule, and made full use of pollution flashover voltage and reduced to increase sharply with equivalent diameter, and the big more principle of the more little pollution flashover voltage increasing degree of equivalent diameter.Thereby guaranteed that composite insulator under the rigor condition that hydrophobicity completely loses, still has higher pollution flashover voltage level.When umbellule full skirt diameter reduced, adjacent umbrella spacing also can correspondingly reduce, and therefore can provide higher leakage distance in given insulation distance.Compare with the composite insulator of existing isometrical umbrella structure or big umbellule structure, under the identical leakage distance, the composite insulator of new beveled structure is owing to have littler equivalent diameter, improved the utilance of leakage distance, therefore provide higher pollution flashover voltage, and significantly reduced the consumption of full skirt material.There is the effect of the gamp of significant difference to be to prevent bridge joint between umbrella, prevents that serious icing snowberg and retardance electric arc are connected in series with the umbellule diameter, thereby guaranteed that this beveled structure insulator has excellent resistant wet performance.
In addition, because the little equivalent diameter of this structure insulator has limited the leakage current that flows through insulator, thereby help to delay the umbrella sheath material aging that leakage current causes under filthy and the moistening concurrent conditions.
Brief Description Of Drawings:
Fig. 1 is existing isometrical umbrella structure composite insulator schematic diagram.
Fig. 2 is existing big umbellule structure composite insulator schematic diagram.
Fig. 3 is the full skirt 2 or 4 and the local enlarged diagram of sheath 3 among Fig. 1, Fig. 2.
Fig. 4 is umbrella structure of composite insulator embodiment one schematic diagram of the present invention.
Fig. 5 is umbrella structure of composite insulator embodiment two schematic diagrames of the present invention.
Fig. 6 umbrella structure of composite insulator embodiment three schematic diagrames of the present invention.
Fig. 7 umbrella structure of composite insulator embodiment four schematic diagrames of the present invention.
The present invention designs four kinds of umbrella structure of composite insulator embodiment, is described in detail as follows in conjunction with each accompanying drawing:
Embodiment one: the composite insulator insulation distance is 5110 millimeters, and 18000 millimeters of leakage distances are rearranged by the gamp of 41 equal diameters and the umbellule of 3 equal diameters between the per two adjacent gamps, as shown in Figure 4.The full skirt diameter of all gamps is 160 millimeters, and the full skirt diameter of all umbellules is 100 millimeters.
This insulator gamp umbrella stretches out 75 millimeters, and the umbellule umbrella stretches out 35 millimeters, and adjacent umbrella spacing all is not less than 25 millimeters.The leakage distance that umbellule provides accounts for 48% of insulator leakage distance, greater than gamp provide 30%.The creep distance coefficient of this insulator is 3.52, and its gamp umbrella stretches out 51, and to stretch out 52 ratio with the umbrella of umbellule be 1.86, greater than 1.5.
The composite insulator of this beveled structure can be used for direct current ± 500kV ultra-high-tension power transmission line.
Embodiment two: the composite insulator insulation distance is 5110 millimeters, 18000 millimeters of leakage distances, and the umbellule that is not waited by gamp and 3 diameters between the per two adjacent gamps of 41 equal diameters rearranges, as shown in Figure 5.The full skirt diameter of all gamps is 140 millimeters.In every group of 3 umbellules, the full skirt diameter of middle 1 umbellule is 120 millimeters, and the full skirt diameter of other 2 umbellules is 100 millimeters.
This insulator gamp umbrella stretches out 55 millimeters, and the umbellule umbrella that diameter is 120 millimeters stretches out 45 millimeters, and the umbellule umbrella that diameter is 100 millimeters stretches out 35 millimeters, and adjacent umbrella spacing all is not less than 25 millimeters.The leakage distance that umbellule provides accounts for 53% of insulator leakage distance, greater than gamp provide 25%.The creep distance coefficient of this insulator is 3.52, and its gamp umbrella stretches out 51, and to stretch out 52 ratio with the umbrella of umbellule be 1.57, greater than 1.5.
The insulator of this beveled structure can be used for direct current ± 500kV ultra-high-tension power transmission line.
Embodiment three: the composite insulator insulation distance is 4130 millimeters, and 12717 millimeters of leakage distances are rearranged by the gamp of 22 equal diameters and the umbellule of 5 equal diameters between the per two adjacent gamps, as shown in Figure 6.The full skirt diameter of all gamps is 150 millimeters, and the full skirt diameter of all umbellules is 90 millimeters.
This insulator gamp umbrella stretches out 60 millimeters, and the umbellule umbrella stretches out 30 millimeters, and adjacent umbrella spacing all is not less than 25 millimeters.The leakage distance that umbellule provides accounts for 53% of insulator leakage distance, provides 30% greater than gamp.The creep distance coefficient of this insulator is 3.08, and its gamp umbrella stretches out 51, and to stretch out 52 ratio with the umbrella of umbellule be 2.0, greater than 1.8.
The insulator of this beveled structure can be used for exchanging the 500kV ultra-high-tension power transmission line.
Embodiment four: the composite insulator insulation distance is 4130 millimeters, and 12717 millimeters of leakage distances are rearranged by the gamp of 44 equal diameters and 2 unequal umbellules of diameter between the per two adjacent gamps, as shown in Figure 7.The full skirt diameter of all gamps is 120 millimeters.The full skirt diameter of every group of 2 umbellules is respectively 100 millimeters, 80 millimeters.
This insulator gamp umbrella stretches out 45 millimeters, and the umbellule umbrella that diameter is 100 millimeters stretches out 35 millimeters, and the umbellule umbrella that diameter is 80 millimeters stretches out 25 millimeters, and the umbrella spacing all is not less than 25 millimeters.The leakage distance that umbellule provides accounts for 43% of insulator leakage distance, greater than gamp provide 32%.The creep distance coefficient of this insulator is 3.08, and its gamp umbrella stretches out 51, and to stretch out 52 ratio with the umbrella of umbellule be 1.80.
The insulator of this beveled structure can be used for exchanging the 500kV ultra-high-tension power transmission line.
Claims (4)
1, a kind of umbrella structure of composite insulator is rearranged by the gamp of some equal diameters and the two or more umbellules between the per two adjacent gamps, and said umbrella stretches out and is not less than 20 millimeters, and adjacent umbrella spacing all is not less than 25 millimeters; The leakage distance that the leakage distance that is provided by umbellule provides greater than gamp is provided; This composite insulator creep distance coefficient is more than or equal to 3.5, and the gamp umbrella stretches out the ratio that the umbrella with umbellule stretches out and is not less than 1.5.
2, a kind of umbrella structure of composite insulator is rearranged by the gamp of some equal diameters and the two or more umbellules between the per two adjacent gamps, and said umbrella stretches out and is not less than 20 millimeters, and adjacent umbrella spacing all is not less than 25 millimeters; The leakage distance that the leakage distance that is provided by umbellule provides greater than gamp is provided; This creep distance coefficient is less than 3.5, and the gamp umbrella stretches out the ratio that the umbrella with umbellule stretches out and is not less than 1.8.
3, umbrella structure of composite insulator as claimed in claim 1 or 2 is characterized in that, the full skirt equal diameters of said umbellule.
4, umbrella structure of composite insulator as claimed in claim 1 or 2 is characterized in that, the full skirt diameter of said umbellule is unequal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB00130075XA CN1142558C (en) | 2000-10-27 | 2000-10-27 | Umbrella structure of composite insulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB00130075XA CN1142558C (en) | 2000-10-27 | 2000-10-27 | Umbrella structure of composite insulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1289131A true CN1289131A (en) | 2001-03-28 |
| CN1142558C CN1142558C (en) | 2004-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB00130075XA Expired - Fee Related CN1142558C (en) | 2000-10-27 | 2000-10-27 | Umbrella structure of composite insulator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834040A (en) * | 2010-04-26 | 2010-09-15 | 山西省电力公司阳泉供电分公司 | Specially synthetic insulator of transmission line of 220kV |
| CN101369476B (en) * | 2007-12-21 | 2011-01-26 | 清华大学深圳研究生院 | DC suspension type composite insulator umbrella skirt structure based on contaminated discharge property |
| CN101752042B (en) * | 2009-12-31 | 2011-11-30 | 河北新华高压电器有限公司 | AC hanging-type composite insulator |
| CN102063972B (en) * | 2007-12-21 | 2012-03-21 | 中国南方电网有限责任公司电网技术研究中心 | Stain discharge characteristic-based direct current suspended composite insulator umbrella skirt structure |
| CN103971861A (en) * | 2014-05-21 | 2014-08-06 | 北京铁道工程机电技术研究所有限公司 | Motor train roof composite insulator with interface breakdown prevention function |
| CN109731691A (en) * | 2019-03-07 | 2019-05-10 | 中国船舶重工集团公司第七0四研究所 | The porcelain insulator of limit function is insulated and had for high-pressure electrostatic |
-
2000
- 2000-10-27 CN CNB00130075XA patent/CN1142558C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101369476B (en) * | 2007-12-21 | 2011-01-26 | 清华大学深圳研究生院 | DC suspension type composite insulator umbrella skirt structure based on contaminated discharge property |
| CN102063972B (en) * | 2007-12-21 | 2012-03-21 | 中国南方电网有限责任公司电网技术研究中心 | Stain discharge characteristic-based direct current suspended composite insulator umbrella skirt structure |
| CN101752042B (en) * | 2009-12-31 | 2011-11-30 | 河北新华高压电器有限公司 | AC hanging-type composite insulator |
| CN101834040A (en) * | 2010-04-26 | 2010-09-15 | 山西省电力公司阳泉供电分公司 | Specially synthetic insulator of transmission line of 220kV |
| CN103971861A (en) * | 2014-05-21 | 2014-08-06 | 北京铁道工程机电技术研究所有限公司 | Motor train roof composite insulator with interface breakdown prevention function |
| US9828005B2 (en) | 2014-05-21 | 2017-11-28 | Beijing Railway Institute Of Mechanical & Electrical Engineering Co., Ltd. | Interface breakdown-proof locomotive roof composite insulator |
| EP3147914A4 (en) * | 2014-05-21 | 2018-01-03 | Beijing Railway Institute Of Mechanical & Electrical Engineering Co., Ltd. | Interface puncturing-proof electric multiple unit car-roof composite insulator |
| CN109731691A (en) * | 2019-03-07 | 2019-05-10 | 中国船舶重工集团公司第七0四研究所 | The porcelain insulator of limit function is insulated and had for high-pressure electrostatic |
| CN109731691B (en) * | 2019-03-07 | 2023-11-17 | 中国船舶重工集团公司第七0四研究所 | Porcelain insulator with limiting function for high-voltage electrostatic insulation |
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| Publication number | Publication date |
|---|---|
| CN1142558C (en) | 2004-03-17 |
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