CN106448947A - Method for improving effective distance of air gap of transmission line - Google Patents
Method for improving effective distance of air gap of transmission line Download PDFInfo
- Publication number
- CN106448947A CN106448947A CN201610859768.3A CN201610859768A CN106448947A CN 106448947 A CN106448947 A CN 106448947A CN 201610859768 A CN201610859768 A CN 201610859768A CN 106448947 A CN106448947 A CN 106448947A
- Authority
- CN
- China
- Prior art keywords
- transmission line
- air gap
- electricity
- wire
- improving transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 27
- 239000011248 coating agent Substances 0.000 claims abstract description 17
- 230000005611 electricity Effects 0.000 claims description 31
- 238000007711 solidification Methods 0.000 claims description 8
- 230000008023 solidification Effects 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 229920002379 silicone rubber Polymers 0.000 claims description 5
- 239000004945 silicone rubber Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 239000003973 paint Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- VMXUWOKSQNHOCA-UKTHLTGXSA-N ranitidine Chemical compound [O-][N+](=O)\C=C(/NC)NCCSCC1=CC=C(CN(C)C)O1 VMXUWOKSQNHOCA-UKTHLTGXSA-N 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000002262 irrigation Effects 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/30—Drying; Impregnating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/184—Sheaths comprising grooves, ribs or other projections
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Bodies (AREA)
- Insulators (AREA)
Abstract
The invention provides a method for improving the effective distance of the air gap of a transmission line. The method comprises the following steps: insulating paint coating and curing and insulating sheath wrapping. The method can effectively improve the gap insulation level, reduces the breakdown probability, and guarantees safe and stable operation of the line.
Description
Technical field
The invention belongs to power transmission line electrical fault prevention and control field, more particularly to a kind of transmission line of electricity the air gap of improving have
The method of effect distance.
Background technology
Transmission line of electricity is the element of electrical network, with circuit distance, coverage big the features such as, often face each
The impact of complicated geographical environment and climatic environment is planted, when adverse environment causes circuit operation failure, circuit will be directly affected
Safe and reliable operation, even can cause large area blackout when serious.Extraneous various unfavorable conditions are likely to result in power transmission line
Air gap distance on road between the alternate or wire of wire and ground thing reduces, when the electrical strength of this gap distance is not resistant to
During by system highest operating voltage, disruptive discharge will occur, prevent the power grid accident for causing because of line fault to be particularly large area
Power outage, is still the most important thing of circuit maintenance work.The electric discharge master that transmission line of electricity air gap distance is not enough and causes
There are 3 kinds of forms：Wire is in electric discharge, wire between the electric discharge of shaft tower component, wire to periphery object discharge.Transmission line of electricity sheath is to carry
One of high transmission line of electricity gap coverage means, have lightweight, no aggravation mild wind to transmission line of electricity parcel insulating sheath and shake
The dynamic and advantage such as conductor cord disconnection, strand broking, current applied research is still few.Coatings RTV is with its distinctive hydrophobicity, hydrophobic
Animal migration, excellent resistance to Flashover Characteristics and long-acting, weather-proof the advantages of become the first-selection of power system power transmission and transforming equipment antifouling work
Coating, its raising effect is significant to flashover voltage, the country there is no people using RTV (room temperature vulcanized silicone rubber) insulant as defeated
Electric wire lead insulation coating is wrapped up for improving transmission line of electricity the air gap coverage with reference to insulating sheath.
Content of the invention
In view of this, in order to overcome the deficiencies in the prior art, the invention provides a kind of improve transmission line of electricity the air gap
The method of coverage, improves the air gap coverage, effectively administers between power transmission line route, between wire and atural object, distance is not
Foot and then situation about puncturing.
In order to achieve the above object, technical scheme is as follows：
A kind of method for improving transmission line of electricity the air gap coverage, comprises the following steps：
1) coating of coatings, in the groove between steel core and aluminum stranded conductor surface stock, coats at least three times PTV insulation materials
Material, per the minor tick regular hour, finally coats to certain thickness and makes conductive line surfaces in certain shape；
2) solidify, the wire that coating is completed is hung 20 hours～30 hours at normal temperatures, makes leading for coating coatings
Line is fully cured；
3) insulating sheath is wrapped up, and the two ends of insulating sheath possess projection and groove respectively, are applied in raised and groove respectively
RTV insulant is covered, raised and groove is closed up, at the gap for closing up, irrigate RTV insulant.
Further, step 1) in, the interval time be more than 20 minutes～50 minutes.
Further, step 2) in, the external diameter of the wire after solidification should be not less than the external diameter of the wire before solidification
1/5.
Further, the sheath is buckle-type.
Further, raised mutually the pressing with the groove can be closed up in hollow cylindrical.
Further, step 3) in, the insulating sheath is silicone rubber.
Further, the thickness of the insulating sheath be not less than 2～5 millimeters.
Beneficial effects of the present invention are：Under same air clearance distance, the method can effectively improve gap insulation level, subtract
Little breakdown probability, ensures circuit safe and stable operation.
(1) under the premise of substantially conductor load is not increased, can effective lifting lead wire transmission line insulator characteristic, identical gap
Under distance, wire improves at least 15% to atural object the air gap coverage, and between wire, the air gap coverage improves lifting
More than 30%, improve the normal running clearance coverage of transmission line of electricity and ensure circuit safe and stable operation；
(2) clearance distance deficiency under extraneous various unfavorable conditions effectively can be administered, and wire is between the electric discharge of shaft tower component, wire
Electric discharge, wire to periphery object discharge situation, online between will not hit when air gap distance significantly reduces between line and atural object
Wear and even result in tripping operation stoppage in transit；
(3) coatings being coated to transmission line of electricity and wraps up insulating sheath can be applicable on built transmission line of electricity, between pair
Stand-off distance carries out improvement from wretched insufficiency circuit and remedies, and also can be applicable on newly-built circuit, ensures defeated when alleviating transmission of electricity corridor anxiety
The big problem of electric line safe distance difficulty.
Description of the drawings
Fig. 1 is a kind of transmission line of electricity coating PTV insulant of method for improving transmission line of electricity the air gap coverage
Structural representation；
Fig. 2 is a kind of knot of the transmission line of electricity parcel insulating sheath of method for improving transmission line of electricity the air gap coverage
Structure schematic diagram；
1st, steel core；2nd, aluminum stranded conductor；3rd, PTV insulant；4th, buckle；5th, insulating sheath.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with the accompanying drawings and embodiment, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, not
For limiting the present invention.
A kind of method for improving transmission line of electricity the air gap coverage is to administering transmission line wire to shaft tower structure
During part electric discharge, should use in electric transmission line isolator high-pressure side side of wire；When puncturing between improvement line, should use in transmission line of electricity shelves
Away from each maximum arc sag；During for administering wire to periphery object discharge, should use in wire easily near periphery object
Place.
Embodiment 1
As shown in figure 1, a kind of method for improving transmission line of electricity the air gap coverage, comprises the following steps：
1) coating of coatings, in the groove between steel core 1 and 2 surface stock of aluminum stranded conductor, at least three times PTV insulation of coating
Material 3, per the minor tick time of 30 minutes, finally coats to certain thickness and makes conductive line surfaces in certain shape；This is certain
Shape can be approximately cylindric.
2) solidify, the wire that coating is completed is hung 20 hours～30 hours at normal temperatures, makes leading for coating coatings
Line is fully cured；The external diameter of the wire after solidification should be not less than the external diameter 1/5 of the wire before solidification.
3) insulating sheath is wrapped up, the two ends of insulating sheath 5 possess projection and groove respectively.Applied in raised and groove respectively
RTV insulant is covered, raised and groove is closed up, as shown in Fig. 2 buckle 4 is formed, the buckle 4 for closing up still suffers from certain gap,
RTV insulant need to be irrigated at the gap for closing up, at 4 bonding of buckle and gap, supplementary irrigation RTV insulant 3 ensures insulating sheath
5 close up rear seamless no electric weak spot, and wherein, sheath is buckle-type.
Projection is mutually pressed with groove can close up in hollow cylindrical.Insulating sheath is silicone rubber.Additionally, insulating sheath
Thickness be not less than 3 millimeters.
It is proved to administer effect through test by a kind of measure of the raising transmission line of electricity the air gap coverage for constituting above
Fruit is good, and under identical clearance distance, line improves at least 15% to atural object the air gap coverage, between line the air gap effectively away from
More than 30% is lifted from improving, enforcement is simple, add effect with stable, reliable no bad pair.
Embodiment 2
A kind of method for improving transmission line of electricity the air gap coverage, comprises the following steps：
1) coating of coatings, in the groove between steel core 1 and 2 surface stock of aluminum stranded conductor, coats n times PTV insulant
3, per the minor tick time of 50 minutes, finally coat to certain thickness and conductive line surfaces are made in certain shape；This certain shape
Can be approximately cylindric.
2) solidify, the wire that coating is completed is hung 20 hours～30 hours at normal temperatures, makes leading for coating coatings
Line is fully cured；The external diameter of the wire after solidification should be not less than the external diameter 1/5 of the wire before solidification.
3) insulating sheath is wrapped up, the two ends of insulating sheath 5 possess projection and groove respectively.Applied in raised and groove respectively
RTV insulant is covered, raised and groove is closed up, buckle 4 is formed, the buckle 4 for closing up still suffers from certain gap, need to close up
Irrigate at gap supplementary irrigation RTV insulant 3 at RTV insulant, 4 bonding of buckle and gap ensure insulating sheath 5 close up after no
Gap no electric weak spot.Wherein, sheath is buckle-type.
Projection is mutually pressed with groove can close up in hollow cylindrical.Insulating sheath is silicone rubber, additionally, insulating sheath
Thickness be not less than 4 millimeters.
It is proved to administer effect through test by a kind of measure of the raising transmission line of electricity the air gap coverage for constituting above
Fruit is good, and under identical clearance distance, line improves at least 15% to atural object the air gap coverage, between line the air gap effectively away from
More than 30% is lifted from improving, enforcement is simple, add effect with stable, reliable no bad pair.
Embodiment described above only have expressed embodiments of the present invention, and its description is more concrete and detailed, but can not
Therefore the restriction being interpreted as to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, some deformation can also be made and is improved, these belong to the protection model of the present invention
Enclose.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (7)
1. a kind of method for improving transmission line of electricity the air gap coverage, it is characterised in that comprise the following steps：
1) coating of coatings, in the groove between steel core and aluminum stranded conductor surface stock, coats at least three times PTV insulant,
Per the minor tick regular hour, finally coat to certain thickness and conductive line surfaces are made in certain shape；
2) solidify, the wire that coating is completed is hung 20 hours～30 hours at normal temperatures, makes the wire of coating coatings complete
All solidstate；
3) insulating sheath is wrapped up, and the two ends of insulating sheath possess projection and groove respectively, are respectively coated with RTV in raised and groove
Insulant, raised and groove is closed up, and irrigates RTV insulant at the gap for closing up.
2. a kind of method for improving transmission line of electricity the air gap coverage according to claim 1, it is characterised in that：Step
In rapid 1), the interval time be more than 20 minutes～50 minutes.
3. a kind of method for improving transmission line of electricity the air gap coverage according to claim 1, it is characterised in that：Step
In rapid 2), the external diameter of the wire after solidification should be not less than the external diameter 1/5 of the wire before solidification.
4. a kind of method for improving transmission line of electricity the air gap coverage according to claim 1, it is characterised in that：Institute
Sheath is stated for buckle-type.
5. a kind of method for improving transmission line of electricity the air gap coverage according to claim 4, it is characterised in that：Institute
State raised mutually pressing with the groove to close up in hollow cylindrical.
6. a kind of method for improving transmission line of electricity the air gap coverage according to claim 1, it is characterised in that：Step
In rapid 3), the insulating sheath is silicone rubber.
7. a kind of method for improving transmission line of electricity the air gap coverage according to claim 6, it is characterised in that：Institute
The thickness for stating insulating sheath be not less than 2～5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610859768.3A CN106448947B (en) | 2016-09-27 | 2016-09-27 | A kind of method for improving transmission line of electricity the air gap coverage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610859768.3A CN106448947B (en) | 2016-09-27 | 2016-09-27 | A kind of method for improving transmission line of electricity the air gap coverage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106448947A true CN106448947A (en) | 2017-02-22 |
| CN106448947B CN106448947B (en) | 2017-12-29 |
Family
ID=58171227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610859768.3A Active CN106448947B (en) | 2016-09-27 | 2016-09-27 | A kind of method for improving transmission line of electricity the air gap coverage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106448947B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112217184A (en) * | 2020-10-19 | 2021-01-12 | 国网河北省电力有限公司检修分公司 | Method for eliminating fault of substation 3/2 wiring protection dead zone |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707342A (en) * | 2009-11-17 | 2010-05-12 | 芜湖明远电线电缆有限责任公司 | Cable head |
| CN202711808U (en) * | 2012-05-08 | 2013-01-30 | 山东大学 | Insulation-type carbon fiber composite core wire |
| JP2015118835A (en) * | 2013-12-19 | 2015-06-25 | 株式会社オートネットワーク技術研究所 | Insulated wire |
| CN204808983U (en) * | 2015-07-30 | 2015-11-25 | 苏州沃尔兴电子科技有限公司 | Buckle formula insulating sheath pipe |
| CN205050586U (en) * | 2015-10-15 | 2016-02-24 | 安徽双诚电线电缆有限公司 | Dampproofing and waterproofing aluminum alloy cable |
-
2016
- 2016-09-27 CN CN201610859768.3A patent/CN106448947B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707342A (en) * | 2009-11-17 | 2010-05-12 | 芜湖明远电线电缆有限责任公司 | Cable head |
| CN202711808U (en) * | 2012-05-08 | 2013-01-30 | 山东大学 | Insulation-type carbon fiber composite core wire |
| JP2015118835A (en) * | 2013-12-19 | 2015-06-25 | 株式会社オートネットワーク技術研究所 | Insulated wire |
| CN204808983U (en) * | 2015-07-30 | 2015-11-25 | 苏州沃尔兴电子科技有限公司 | Buckle formula insulating sheath pipe |
| CN205050586U (en) * | 2015-10-15 | 2016-02-24 | 安徽双诚电线电缆有限公司 | Dampproofing and waterproofing aluminum alloy cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112217184A (en) * | 2020-10-19 | 2021-01-12 | 国网河北省电力有限公司检修分公司 | Method for eliminating fault of substation 3/2 wiring protection dead zone |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106448947B (en) | 2017-12-29 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180612 Address after: 100000 West Chang'an Avenue, Xicheng District, Xicheng District, Beijing Co-patentee after: Hubei Electric Power Co., Ltd. maintenance company Patentee after: State Grid Corporation of China Co-patentee after: Hubei Chaoneng Electric Power Co., Ltd. Address before: 430074 3, 60-65 two village, Wuli pier, Hanyang District, Wuhan, Hubei. Patentee before: Hubei Super Power & Ultrahigh Pressure Electric Power Technology Development Co., Ltd. |
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| TR01 | Transfer of patent right |