CN103915227A - +/-660 kV direct-current composite insulator - Google Patents
+/-660 kV direct-current composite insulator Download PDFInfo
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- CN103915227A CN103915227A CN201410147861.2A CN201410147861A CN103915227A CN 103915227 A CN103915227 A CN 103915227A CN 201410147861 A CN201410147861 A CN 201410147861A CN 103915227 A CN103915227 A CN 103915227A
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- full skirt
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- umbrella
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Abstract
The invention discloses a +/-660 kV direct-current composite insulator which comprises an annular metal connecting piece located at the end, a sealing ring, an epoxy resin glass fiber stick, a sheath and grading rings. The annular metal connecting piece is connected with the grading ring at the grounding end. The grading ring at the grounding end is connected with the front end of the epoxy resin glass fiber stick through the sealing ring. The outer surface of the epoxy resin glass fiber stick is wrapped by the sheath. Umbrella skirts of three specifications are arranged on the sheath. The tail end of the epoxy resin glass fiber stick is connected with the grading ring at the high-voltage end. According to the +/-660 kV direct-current composite insulator, the structural mode of one large umbrella and two small umbrellas of an extra-large umbrella with arranged flowers is adopted, the creepage distance is effectively increased on the basis of an existing structural height, the electric field distribution of the surface of the +/-660 kV direct-current composite insulator is improved, the local field intensity is reduced, partial discharge is restrained, meanwhile, ice and snow bridge connection can be blocked due to the structure, and the +/-660 kV direct-current composite insulator has the good ice, snow and lightning prevention capacity.
Description
Technical field
The present invention relates to field of overhead power transmission lines, relate in particular to one ± 660kV DC compound insulator.
Background technology
Insulator, as the important component part of transmission line, plays an important role in guarantee safe operation of power system.Composite insulator not only has the little and good anti-fouling flashover performance of hydrophobicity performance, hydrophobicity migration performance, equivalent diameter, and have intensity high, lightweight, be difficult for the features such as fragmentation, convenient transportation, operation maintenance be easy, in AC and DC transmission line, use in a large number, and in the AC and DC engineering of newly-built 500kV and above, also start to use even completely in batches.But because direct current is without zero crossing problem, compound direct current insulator Flashover Characteristics with exchange Flashover Characteristics tool and be very different, while is due to the electrostatic adsorption of direct voltage, direct current external insulation surface contamination speed is faster under the same conditions, dirty more serious, the conclusion (of pressure testing) that exchanges composite insulator should not directly apply in the design of DC power transmission line composite insulator, put into operation ± 660kV DC compound insulator adopts the version of large-little-umbellule, there is partial discharge phenomenon in various degree, the security of operation of ± 660kV of serious threat DC power transmission line.
Summary of the invention
The present invention, in order to address the above problem, has proposed one ± 660kV DC compound insulator, and this insulator can effectively increase creep distance, have Anti-ice-and-snow sudden strain of a muscle ability, effectively solution ± 660kV DC compound insulator partial discharge problem.
To achieve these goals, the present invention adopts following technical scheme:
One ± 660kV DC compound insulator, comprises the endless metal connector, sealing ring, epoxy resin fiberglass rod, sheath and the grading ring that are positioned at end; Wherein, endless metal connector connects the grading ring of earth terminal, the grading ring of earth terminal is by the front end of sealing ring connecting ring epoxy resins Fiber glass rod, epoxy resin fiberglass rod outer surface is coated with sheath, sheath is provided with the full skirt of three kinds of specifications, and the tail end of epoxy resin fiberglass rod connects the grading ring of high-pressure side.
Described full skirt comprises especially big full skirt, large full skirt and three kinds of specifications of little full skirt, and wherein, especially big full skirt diameter is 290-310mm, and large full skirt diameter is 215-225mm, and umbellule skirt diameter is 150-160mm;
Described umbrella skirt construction is 1 large 2 little forms of the especially big umbrella of band flower arrangement, between large umbellule, is large-little-little form,, the spacing of adjacent full skirt is 30-38mm, the spacing of adjacent especially big full skirt is 650-660mm.
Described full skirt is the squeezing bag penetrating umbrella moulding that is easy to the position of adjusting especially big umbrella.
Beneficial effect of the present invention is: the version that adopts 1 gamp 2 umbellules of the especially big umbrella of band flower arrangement, can on the basis of original structure height, effectively increase creepage distance, the Electric Field Distribution of improvement ± 660kV D.C. isolation sub-surface, reduce local field strength, suppress the generation of partial discharge, this structure can be blocked the bridge joint of ice and snow simultaneously, has the ability that good Anti-ice-and-snow dodges.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Wherein, 1 endless metal connector, 2 sealing rings, the grading ring of 3 earth terminals, 4 sheath plugs, 5 especially big umbrellas, 6 gamps, 7 umbellules, the grading ring of 8 high-pressure sides.
Embodiment:
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, the preferred embodiments of the present invention, now enumerate nominal structure height and be 9200mm ± 660kV composite insulator further describes the present invention by reference to the accompanying drawings.
According to Fig. 1, one ± 660kV DC compound insulator, comprises and is positioned at the endless metal connector 1 of end, the sealing ring 2 of core rod end, the grading ring 3 of earth terminal, the epoxy resin fiberglass rod that is positioned at center and coated its surperficial sheath 4, the some especially big full skirt 5 of jacket surface, the some large full skirt 6 of jacket surface, some umbellule skirts 7 of jacket surface and the little grading ring 8 of high-pressure side; The endless metal connector 1 of end is through hot galvanizing processing; Earth terminal grading ring and high-pressure side grading ring adopt aluminum alloy material; Especially big full skirt quantity is 13, large full skirt quantity is 94, umbellule skirt quantity is 214, umbrella skirt construction is 1 large 2 little forms of the especially big umbrella of band flower arrangement, between large umbellule, be large-little-little form, former composite insulator has 107 gamps, now adopts 13 especially big umbrellas, 94 gamps, former insulator is changed to especially big umbrella from the 1st, 9,17,25,33,41,49,57,65,73,81,89,97 gamps of cross-arm side number, and umbellule position and quantity are constant; Full skirt is squeezing bag penetrating umbrella moulding, and the position of especially big full skirt can be adjusted according to actual needs flexibly.Especially big full skirt diameter is 300mm, and large full skirt diameter is 220mm, and umbellule skirt diameter is 154mm.Umbrella skirt construction is 1 large 2 little forms of the especially big umbrella of band flower arrangement, between large umbellule, is large-little-little form, and the spacing of adjacent full skirt is 34mm, and the spacing of adjacent especially big full skirt is 653mm.
The use of especially big umbrella makes this ± and the creepage distance of 660kV DC compound insulator is increased to 40400mm by original 38400mm, the Electric Field Distribution of improved ± 660kV D.C. isolation sub-surface, reduce local field strength, suppress the generation of partial discharge, improve the pollution flashover voltage of this insulator simultaneously, reduced the probability that pollution flashover occurs.
Diameter of mandrel and specified mechanical load should be according to actual service condition decisions, and plug should be by screening tests such as power frequency withstand tests.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendments that creative work can make or distortion still in protection scope of the present invention.
Claims (4)
1. ± 660kV DC compound insulator, is characterized in that: comprise the endless metal connector, sealing ring, epoxy resin fiberglass rod, sheath and the grading ring that are positioned at end; Wherein, endless metal connector connects the grading ring of earth terminal, the grading ring of earth terminal is by the front end of sealing ring connecting ring epoxy resins Fiber glass rod, epoxy resin fiberglass rod outer surface is coated with sheath, sheath is provided with the full skirt of three kinds of specifications, and the tail end of epoxy resin fiberglass rod connects the grading ring of high-pressure side.
2. one ± 660kV DC compound insulator as claimed in claim 1, it is characterized in that: described full skirt comprises especially big full skirt, large full skirt and three kinds of specifications of little full skirt, and wherein, especially big full skirt diameter is 290-310mm, large full skirt diameter is 215-225mm, and umbellule skirt diameter is 150-160mm.
3. one ± 660kV DC compound insulator as claimed in claim 1, it is characterized in that: described umbrella skirt construction is 1 large 2 little forms of the especially big umbrella of band flower arrangement, between large umbellule, be large-little-little form, the spacing of adjacent full skirt is 30-38mm, and the spacing of adjacent especially big full skirt is 650-660mm.
4. one ± 660kV DC compound insulator as claimed in claim 1, is characterized in that: described full skirt is the squeezing bag penetrating umbrella moulding that is easy to the position of adjusting especially big umbrella.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410147861.2A CN103915227B (en) | 2014-04-14 | 2014-04-14 | One ± 660kV DC compound insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410147861.2A CN103915227B (en) | 2014-04-14 | 2014-04-14 | One ± 660kV DC compound insulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103915227A true CN103915227A (en) | 2014-07-09 |
| CN103915227B CN103915227B (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410147861.2A Active CN103915227B (en) | 2014-04-14 | 2014-04-14 | One ± 660kV DC compound insulator |
Country Status (1)
| Country | Link |
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| CN (1) | CN103915227B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376932A (en) * | 2014-11-11 | 2015-02-25 | 国家电网公司 | Composite insulator string with big grading rings and small grading rings |
| CN104376933A (en) * | 2014-11-11 | 2015-02-25 | 国家电网公司 | 800 kV direct-current insulator with optimized umbrella-shaped structure |
| CN106205897A (en) * | 2016-07-04 | 2016-12-07 | 安徽天达网络科技有限公司 | A kind of composite rod suspension insulator |
| CN111403128A (en) * | 2020-04-02 | 2020-07-10 | 国家电网有限公司 | Post insulator for direct current transmission and direct current transmission equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06245358A (en) * | 1993-02-10 | 1994-09-02 | Furukawa Electric Co Ltd:The | Deterioration preventer for polymer insulator |
| CN201402682Y (en) * | 2009-05-15 | 2010-02-10 | 东莞市高能电气股份有限公司 | plus 1000kV UHVDC composite insulator |
| CN202110896U (en) * | 2010-12-28 | 2012-01-11 | 河南博特电气有限公司 | Novel composite suspension insulator |
| CN203799766U (en) * | 2014-04-14 | 2014-08-27 | 国家电网公司 | +/- 660kV direct-current composite insulator |
-
2014
- 2014-04-14 CN CN201410147861.2A patent/CN103915227B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06245358A (en) * | 1993-02-10 | 1994-09-02 | Furukawa Electric Co Ltd:The | Deterioration preventer for polymer insulator |
| CN201402682Y (en) * | 2009-05-15 | 2010-02-10 | 东莞市高能电气股份有限公司 | plus 1000kV UHVDC composite insulator |
| CN202110896U (en) * | 2010-12-28 | 2012-01-11 | 河南博特电气有限公司 | Novel composite suspension insulator |
| CN203799766U (en) * | 2014-04-14 | 2014-08-27 | 国家电网公司 | +/- 660kV direct-current composite insulator |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376932A (en) * | 2014-11-11 | 2015-02-25 | 国家电网公司 | Composite insulator string with big grading rings and small grading rings |
| CN104376933A (en) * | 2014-11-11 | 2015-02-25 | 国家电网公司 | 800 kV direct-current insulator with optimized umbrella-shaped structure |
| CN106205897A (en) * | 2016-07-04 | 2016-12-07 | 安徽天达网络科技有限公司 | A kind of composite rod suspension insulator |
| CN111403128A (en) * | 2020-04-02 | 2020-07-10 | 国家电网有限公司 | Post insulator for direct current transmission and direct current transmission equipment |
| CN111403128B (en) * | 2020-04-02 | 2021-10-08 | 国家电网有限公司 | Post insulator for direct current transmission and direct current transmission equipment |
| KR20220003610A (en) * | 2020-04-02 | 2022-01-10 | 스테이트 그리드 코퍼레이션 오브 차이나 | Post Insulators and DC Power Transmission Devices |
| US11791068B2 (en) | 2020-04-02 | 2023-10-17 | State Grid Corporation Of China | Post insulator and direct current power transmission device |
| KR102621788B1 (en) * | 2020-04-02 | 2024-01-08 | 스테이트 그리드 코퍼레이션 오브 차이나 | Post insulators and direct current power transmission devices |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103915227B (en) | 2016-08-17 |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Hui Inventor after: Li Ming Inventor after: Shen Qinghe Inventor after: Yong Jun Inventor after: Meng Hailei Inventor after: Qiao Yaohua Inventor after: Liu Rong Inventor after: Zhu Wenbing Inventor after: Du Xiuming Inventor after: Zhu Mengzhao Inventor before: Shen Qinghe Inventor before: Liu Hui Inventor before: Yong Jun Inventor before: Meng Hailei Inventor before: Qiao Yaohua Inventor before: Liu Rong |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: SHEN QINGHE LIU HUI YONG JUN MENG HAILEI QIAO YAOHUA LIU RONG TO: LIU HUI SHEN QINGHE YONG JUN MENG HAILEI QIAO YAOHUA LIU RONG ZHU WENBING DU XIUMING ZHU MENGZHAO LI MING |
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| C14 | Grant of patent or utility model | ||
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