CN103997007A - Protection device for preventing windage yaw flashover of power transmission line - Google Patents
Protection device for preventing windage yaw flashover of power transmission line Download PDFInfo
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- CN103997007A CN103997007A CN201410218835.4A CN201410218835A CN103997007A CN 103997007 A CN103997007 A CN 103997007A CN 201410218835 A CN201410218835 A CN 201410218835A CN 103997007 A CN103997007 A CN 103997007A
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- wire
- transmission line
- power transmission
- protection device
- gold utensil
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Abstract
The invention discloses a protection device for preventing windage yaw flashover of a power transmission line. The device comprises a wire, a fitting connected with the wire, a power transmission line insulator, a fitting protection device and two wire protection devices located on the two sides of the fitting. The wire protection devices are arranged outside the wire and connected with the fitting protection device, and the fitting protection device is installed outside the fitting and connected with the power transmission line insulator. Specific to air breakdown and discharge, the most direct reason for windage yaw flashover, generated due to the fact that the insulating distance between the wire and a tower is not enough due to strong wind, the electric insulating strength between the wire and the tower is enhanced. By the adoption of the protection device, electric field distortion between the wire and an insulating sheath and between the fitting and an insulating sheath box is effectively eliminated, and it is avoided that partial field strength is too high and the effect of preventing windage yaw flashover is greatly reduced; water is effectively prevented from entering the insulating sheath and the insulating sheath box, the probability of corona of the wire and the fitting is reduced, and the problem of electrochemical corrosion and aging of the device is solved.
Description
Technical field
The present invention relates to the inclined to one side arc protection device of a kind of power transmission line wind, belong to T & D Technology field.
Background technology
In recent years, be accompanied by increasing gradually of various diastrous weathers, particularly, such as the appearance of the exceedingly odious microclimates such as squall line wind, flashover of power transmission circuit caused by windage yaw problem happens occasionally.The circuit that windage yaw flashover occurs has the shaft tower of single, double loop line; Tower has strain tower and tangent tower, and strain tower focuses mostly on and in wire jumper, shaft tower framework discharged, and tangent tower focuses mostly on and in wire or gold utensil, tower arm discharged.During windage yaw flashover, generation area has high wind and with torrential rain or hail more; Shaft tower point of discharge has obvious electric arc to burn trace, and discharge path is clear; Windage yaw flashover mostly occurs under operating voltage, generally can not successful reclosing, thus cause line outage, have a strong impact on the reliability of power supply, cause very large economic loss.In addition, in the majority according to statistics tangent tower generation windage yaw tripping operation, strain tower is relatively less.
Windage yaw flashover reason mainly can be summarized as following several aspect: the most direct reason of windage yaw flashover is because high wind causes insulation distance deficiency, to cause air breakdown to discharge between wire and shaft tower.Conventional insulators all adopts conventional porcelain, glass, and in the situation that surpassing designing wind speed, insulator string tilts to shaft tower direction, has reduced the air gap distance of wire and steel tower, and flashover just occurs while requiring the minimum voltage that can not meet electric discharge when air gap distance.In addition, circuit does not carry out windage yaw check after adjusting and climbing employing composite insulator, even if add that because composite insulator deadweight is light weight amplitude of fluctuation when windage yaw greatly also can cause electric discharge.
Wind-deviation technical measures mainly adopt following at present: adopt the configuration of duplex " V " type string 1.: by the falsification of jumper string simply connected, be the configuration of duplex " V " type string, improve insulator and resist the ability of high wind, this method is applicable to newly-built circuit, but is not suitable for reconstruction of old circuit; 2. weight is installed: weight is installed in insulator lower end, by increasing the swing of the weight limits insulator of insulator, is reached the object that prevents windage yaw flashover.Although adopt installation weight to improve insulator string windage yaw, there is certain effect, can not really control the windage yaw of insulator string.3. Installation of New Type windage yaw preventing composite insulator: change the mounting means of traditional product into " cantilever type " by " hinge type ", become hard support from swing, make composite insulator change " quiet " into by " moving ".The artificial fixedly composite insulator position of forcing of this method, under high wind effect, composite insulator can be subject to horizontal shear force, under long term, can accelerate core rod of insulator mechanical fatigue, thereby causes disconnected string accident.
Publication number is the inclined to one side flashover device of the utility model patent case < < power transmission line wind > > of CN202978174U, at on 06 05th, 2013 publication date, the inclined to one side flashover device of a kind of power transmission line wind has been proposed, the outside of suspension clamp clamps the coated cover of high pressure resistant insulation, the coated centre bore that is covered with of high pressure resistant insulation, the two ends of centre bore are a fixing transmission pressure left side respectively, right high pressure resistant insulation sheath, described transmission pressure is left, in the centre bore of the coated cover of right high pressure resistant insulation sheath and high pressure resistant insulation, be installed with transmission pressure.This mode limitation is: the formed high field intensity regions such as wedge angle region that in this device, insulating sleeve is directly exposed to wire burr, tip and connects gold utensil, and under long term, meeting acceleration insulating material is aging; In addition, this device fails to guarantee fitting tightly of conduction and sheath, can cause moisture deeply, accelerates the Electrochemical Ageing of insulating material.
Summary of the invention
The deficiency existing for prior art, the object of the invention is to provide and a kind ofly can effectively reduces flashover of power transmission circuit caused by windage yaw occurrence probability, and has the inclined to one side arc protection device of power transmission line wind of wire and gold utensil defencive function.
To achieve these goals, the present invention realizes by the following technical solutions:
The inclined to one side arc protection device of a kind of power transmission line wind of the present invention, comprises wire, the gold utensil being connected with wire and electric transmission line isolator, and the present invention also comprises gold utensil protective device and is positioned at ambilateral two conductive wire protection apparatus of gold; Conductive wire protection apparatus is arranged on the outside of wire and is connected with gold utensil protective device, and gold utensil protective device is arranged on the outside of gold utensil and is connected with electric transmission line isolator.
Above-mentioned conductive wire protection apparatus comprises stress cone, be wrapped in wire outside for eliminate wire burr electric field distortion semi-conductive tape, be arranged on semi-conductive tape outside insulating sleeve, be filled in the waterstop between semi-conductive tape and insulating sleeve and be arranged on the grading ring of insulating sleeve outboard end; Grading ring is electrically connected by stress cone and semi-conductive tape.
Above-mentioned gold utensil protective device comprises stress cone, waterstop and is arranged on two insulating sleeve boxes between insulating sleeve; Gold utensil is electrically connected by stress cone and semi-conductive tape, for eliminating described gold utensil tip region field intensity distortion; Insulating sleeve box and gold utensil are all connected with electric transmission line isolator by waterstop.
Above-mentioned insulating sleeve is realized seamless connection by room temperature vulcanized silicone rubber with insulating sleeve box.
Above-mentioned wire is single conductor, two-conductor line or multiple fission conductor.
The thickness of above-mentioned semi-conductive tape is 0.2-3.0mm.
The thickness of above-mentioned waterstop is 0.5-2mm.
The thickness of above-mentioned insulating sleeve is 5-15mm, and length is 2-10m.
The thickness of above-mentioned insulating sleeve box is 5-15mm.
The present invention is directed between wire and shaft tower, because high wind causes the not enough air breakdown that causes of insulation distance, the most direct reason of this windage yaw flashover generation of electric discharge occurs, increase electric insulation intensity between wire and shaft tower; The windage yaw protective device of inventing is lightweight, can effectively avoid increasing the weight of the shaft tower problems of mechanical strength that weight, windage yaw preventing composite insulator bring.The present invention has effectively eliminated between wire and insulating sleeve, the electric field distortion problem between gold utensil and insulating sleeve box, avoids local field strength too high and cause wind-deviation flashover effect greatly to decline.The present invention effectively stops moisture content to enter insulating sleeve and insulating sleeve box, reduces wire and hardware corona odds, has eliminated the aging problem of device electrochemical corrosion.
Accompanying drawing explanation
Fig. 1 is the inclined to one side arc protection apparatus structure of power transmission line wind of the present invention schematic diagram;
Fig. 2 is transmission line single conductor wind-deviation arc protection device field test figure of the present invention;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is transmission line conductors on quad bundled wind-deviation arc protection device field test figure of the present invention;
Fig. 5 is the left view of Fig. 4.
In figure, each label is as follows:
1 is that grading ring, 2 is that stress cone, 3 is that insulating sleeve, 4 is that waterstop, 5 is that semi-conductive tape, 6 is that wire, 7 is that electric transmission line isolator, 8 is that gold utensil, 9 is insulating sleeve box.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.
Referring to Fig. 1, the present invention proposes the inclined to one side arc protection device of a kind of power transmission line wind, comprise conductive wire protection apparatus and gold utensil protective device.
Wherein, conductive wire protection apparatus comprises semi-conductive tape 5, waterstop 4, insulating sleeve 3, stress cone 2 and grading ring 1.
Wherein, gold utensil protective device comprises waterstop 4, stress cone 2 and insulating sleeve box 9.
Conductive wire protection apparatus is wrapped in wire 6 outsides and is connected with gold utensil protective device, and gold utensil protective device is wrapped in gold utensil 8 outsides and is connected with electric transmission line isolator 7.It is inner that conductive wire protection apparatus is embedded into gold utensil protective device, and by the tight seamless connection of room temperature vulcanized silicone rubber.
In conductive wire protection apparatus, semi-conductive tape 5 is closely wrapped in wire 6 outsides to eliminate wire 6 burr electric field distortions, and semi-conductive tape 5 thickness are 0.2-3.0mm.
Waterstop 4 is closely filled between semi-conductive tape 5 and insulating sleeve 3 and enters into conductive wire protection apparatus with natural precipitations such as prevention rainwater, and waterstop 4 thickness are 0.5-2mm.
Insulating sleeve 3 is closely wrapped in waterstop 4 outsides, wire 6 and electric power line pole tower gap electric insulation level while occurring to strengthen windage yaw, and insulating sleeve 3 thickness are 5-15mm, length is 2-10m.
For eliminating semi-conductive tape 5 end wires 6 and 3 electric field distortions of insulating sleeve, grading ring 1 is arranged on insulating sleeve 3 outboard end, and is electrically connected by stress cone 2 and semi-conductive tape 5.
In gold utensil protective device, insulating sleeve box 9 is wrapped in gold utensil 8 outsides, and its thickness is 5-15mm.Stress cone 2 electrical connection semi-conductive tape 5 and gold utensils 8, to eliminate gold utensil 8 tip region field intensity distortion, reduce insulating sleeve box 9 electric chance of breakdown.
The wire 6 adopting in the present invention can be single conductor (referring to Fig. 2, Fig. 3), two-conductor line or multiple fission conductor, and Fig. 4 and Fig. 5 are conductors on quad bundled.
In the present embodiment, the thickness of the insulating sleeve 3 of wire 6 is 10mm, and insulating sleeve box 9 thickness of gold utensil 8 are 10mm.Semi-conductive tape 5 two ends are connected with grading ring 1, gold utensil 8 respectively by stress cone 2, to reduce electric field distortion.
Test is found: to 500kV wire, adopt after the inclined to one side arc protection device of power transmission line wind of the present invention, the distance that generation air gap punctures is 0.76-0.80m; And do not take the plain conductor of apparatus of the present invention, it is 0.90-1.00m that the distance that air gap punctures occurs.So, by increasing the inclined to one side arc protection device of power transmission line wind of the present invention, can effectively improve windage yaw flashover and occur apart from 0.14-0.20m.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (9)
1. the inclined to one side arc protection device of power transmission line wind, comprises wire (6), the gold utensil (8) being connected with wire (6) and electric transmission line isolator (7), it is characterized in that,
Also comprise gold utensil protective device and two conductive wire protection apparatus that are positioned at gold utensil (8) both sides;
Described conductive wire protection apparatus is arranged on the outside of wire (6) and is connected with gold utensil protective device, and described gold utensil protective device is arranged on the outside of gold utensil (8) and is connected with electric transmission line isolator (7).
2. the inclined to one side arc protection device of power transmission line wind according to claim 1, is characterized in that,
Described conductive wire protection apparatus comprises stress cone (2), be wrapped in semi-conductive tape (5), the insulating sleeve (3) that is arranged on semi-conductive tape (5) outside that wire (6) outside is used for eliminating wire (6) burr electric field distortion, be filled in the waterstop (4) between semi-conductive tape (5) and insulating sleeve (3) and be arranged on the grading ring (1) of insulating sleeve (3) outboard end;
Described grading ring (1) is by stress cone (2) and semi-conductive tape (5) electrical connection.
3. the inclined to one side arc protection device of power transmission line wind according to claim 2, is characterized in that,
Described gold utensil protective device comprises stress cone (2), waterstop (4) and is arranged on the insulating sleeve box (9) between two insulating sleeves (3);
Described gold utensil (8) is by stress cone (2) and semi-conductive tape (5) electrical connection, for eliminating the distortion of described gold utensil (8) tip region field intensity;
Described insulating sleeve box (9) and gold utensil (8) are all connected with electric transmission line isolator (7) by waterstop (4).
4. the inclined to one side arc protection device of power transmission line wind according to claim 3, is characterized in that,
Described insulating sleeve (3) is realized seamless connection by room temperature vulcanized silicone rubber with insulating sleeve box (9).
5. according to the inclined to one side arc protection device of the power transmission line wind described in claim 1 to 4 any one, it is characterized in that,
Described wire (6) is single conductor, two-conductor line or multiple fission conductor.
6. according to the inclined to one side arc protection device of the power transmission line wind described in claim 1 to 4 any one, it is characterized in that,
The thickness of described semi-conductive tape (5) is 0.2-3.0mm.
7. according to the inclined to one side arc protection device of the power transmission line wind described in claim 1 to 4 any one, it is characterized in that,
The thickness of described waterstop (4) is 0.5-2mm.
8. according to the inclined to one side arc protection device of the power transmission line wind described in claim 1 to 4 any one, it is characterized in that,
The thickness of described insulating sleeve (3) is 5-15mm, and length is 2-10m.
9. according to the inclined to one side arc protection device of the power transmission line wind described in claim 1 to 4 any one, it is characterized in that,
The thickness of described insulating sleeve box (9) is 5-15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410218835.4A CN103997007B (en) | 2014-05-22 | 2014-05-22 | The inclined to one side arc protection device of a kind of power transmission line wind |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410218835.4A CN103997007B (en) | 2014-05-22 | 2014-05-22 | The inclined to one side arc protection device of a kind of power transmission line wind |
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| CN103997007A true CN103997007A (en) | 2014-08-20 |
| CN103997007B CN103997007B (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410218835.4A Active CN103997007B (en) | 2014-05-22 | 2014-05-22 | The inclined to one side arc protection device of a kind of power transmission line wind |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104658720A (en) * | 2015-02-14 | 2015-05-27 | 清华大学深圳研究生院 | Method and device for improving pollution flashover performance of suspension insulator |
| CN106291298A (en) * | 2016-08-26 | 2017-01-04 | 国家电网公司 | The test model of the simulation alternate flashover of single conductor power transmission circuit caused by windage and application process |
| CN107230535A (en) * | 2017-04-21 | 2017-10-03 | 河钢股份有限公司承德分公司 | A kind of antifouling work method of Voltage for Insulators on HV Lines |
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| JPH0378413A (en) * | 1989-08-18 | 1991-04-03 | Hitachi Cable Ltd | Low corona noise type low wind noise electric wire |
| JP2001238336A (en) * | 2000-02-22 | 2001-08-31 | Furukawa Electric Co Ltd:The | Apparatus for reducing corona noise in multiconductor transmission line |
| CN200953258Y (en) * | 2006-07-04 | 2007-09-26 | 沈阳汇成电缆有限公司 | 500KV and below ultrahigh voltage cross-linked longitudinal waterproof cable |
| CN201829903U (en) * | 2010-10-29 | 2011-05-11 | 山西省电力公司晋中供电分公司 | Weighting block wind drift preventing device for single wire clips of power transmission line |
| CN202978174U (en) * | 2012-12-21 | 2013-06-05 | 河北硅谷化工有限公司 | Windage yaw flashover preventing device of transmission lines |
| CN203951135U (en) * | 2014-05-22 | 2014-11-19 | 国家电网公司 | The inclined to one side arc protection device of a kind of power transmission line wind |
-
2014
- 2014-05-22 CN CN201410218835.4A patent/CN103997007B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0378413A (en) * | 1989-08-18 | 1991-04-03 | Hitachi Cable Ltd | Low corona noise type low wind noise electric wire |
| JP2001238336A (en) * | 2000-02-22 | 2001-08-31 | Furukawa Electric Co Ltd:The | Apparatus for reducing corona noise in multiconductor transmission line |
| CN200953258Y (en) * | 2006-07-04 | 2007-09-26 | 沈阳汇成电缆有限公司 | 500KV and below ultrahigh voltage cross-linked longitudinal waterproof cable |
| CN201829903U (en) * | 2010-10-29 | 2011-05-11 | 山西省电力公司晋中供电分公司 | Weighting block wind drift preventing device for single wire clips of power transmission line |
| CN202978174U (en) * | 2012-12-21 | 2013-06-05 | 河北硅谷化工有限公司 | Windage yaw flashover preventing device of transmission lines |
| CN203951135U (en) * | 2014-05-22 | 2014-11-19 | 国家电网公司 | The inclined to one side arc protection device of a kind of power transmission line wind |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104658720A (en) * | 2015-02-14 | 2015-05-27 | 清华大学深圳研究生院 | Method and device for improving pollution flashover performance of suspension insulator |
| CN106291298A (en) * | 2016-08-26 | 2017-01-04 | 国家电网公司 | The test model of the simulation alternate flashover of single conductor power transmission circuit caused by windage and application process |
| CN107230535A (en) * | 2017-04-21 | 2017-10-03 | 河钢股份有限公司承德分公司 | A kind of antifouling work method of Voltage for Insulators on HV Lines |
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| Publication number | Publication date |
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| CN103997007B (en) | 2016-05-25 |
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