CN106448947B - A kind of method for improving transmission line of electricity the air gap coverage - Google Patents
A kind of method for improving transmission line of electricity the air gap coverage Download PDFInfo
- Publication number
- CN106448947B CN106448947B CN201610859768.3A CN201610859768A CN106448947B CN 106448947 B CN106448947 B CN 106448947B CN 201610859768 A CN201610859768 A CN 201610859768A CN 106448947 B CN106448947 B CN 106448947B
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- Prior art keywords
- transmission line
- electricity
- air gap
- wire
- coating
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 37
- 230000005611 electricity Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 33
- 239000011248 coating agent Substances 0.000 claims abstract description 22
- 238000007711 solidification Methods 0.000 claims abstract description 9
- 230000008023 solidification Effects 0.000 claims abstract description 9
- 239000011810 insulating material Substances 0.000 claims description 15
- 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
- 239000010959 steel Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 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 3
- 230000000694 effects Effects 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 230000002262 irrigation Effects 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization 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
- 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
- 239000000463 material Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004945 silicone rubber Substances 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 kind of method for improving transmission line of electricity the air gap coverage, comprise the following steps：The coating of coatings, solidification, parcel insulating sheath；This method can effectively improve gap insulation level, reduce breakdown probability, ensure circuit safe and stable operation.
Description
Technical field
The invention belongs to power transmission line electrical failure prevention and control field, more particularly to a kind of transmission line of electricity the air gap of improving to have
The method for imitating distance.
Background technology
Transmission line of electricity is the element of power network, has the characteristics that circuit distance, coverage are big, is often faced each
The influence of kind complicated geographical environment and climatic environment, when adverse environment causes circuit operation failure, will directly affect circuit
Safe and reliable operation, when serious even can cause large area blackout.Extraneous various unfavorable conditions may cause power transmission line
Wire is alternate on road or air gap distance between wire and ground thing reduces, when the electrical strength of this gap distance is not resistant to
Disruptive discharge will occur during by system highest operating voltage, prevent the particularly large area of the power grid accident caused by line fault
Power outage, it is still the most important thing of circuit maintenance work.Discharge master caused by transmission line of electricity air gap distance deficiency
There are 3 kinds of forms：Wire is electric discharge, wire 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, to transmission line of electricity parcel insulating sheath have it is in light weight, without aggravation gentle breeze shake
The advantages such as dynamic and conductor cord disconnection, strand broking, application study is still few at present.Coatings RTV is with its distinctive hydrophobicity, hydrophobic
Migration, excellent resistance to Flashover Characteristics and it is long-acting, weather-proof the advantages that as power system power transmission and transforming equipment antifouling work first choice
Coating, its raising significant effect to flashover voltage, the country there is no people using RTV (room temperature vulcanized silicone rubber) insulating materials as defeated
Electric wire lead insulation coating combination insulating sheath is wrapped up for improving transmission line of electricity the air gap coverage.
The content of the invention
In view of this, for overcome the deficiencies in the prior art, the invention provides one kind to improve transmission line of electricity the air gap
The method of coverage, improves the air gap coverage, effectively administers between power transmission line route, distance is not between wire and atural object
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, coating at least PTV insulation materials three times
Material, per the minor tick regular hour, it is in certain shape that final coating makes conductive line surfaces to certain thickness；
2) solidify, the wire for coating completion is hung 20 hours~30 hours at normal temperatures, makes leading for coating coatings
Line is fully cured；
3) insulating sheath is wrapped up, the both ends of insulating sheath possess raised and groove, applied respectively in raised and groove respectively
RTV insulating materials is covered, raised and groove is closed up, RTV insulating materials is irrigated at the gap closed up.
Further, in step 1), the interval time is more than 20 minutes~50 minutes.
Further, in step 2), 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 pressed with the groove can close up in hollow cylindrical.
Further, in step 3), the insulating sheath is silicon rubber.
Further, the thickness of the insulating sheath is not less than 2~5 millimeters.
Beneficial effects of the present invention are：Under same air clearance distance, this method can effectively improve gap insulation level, subtract
Small breakdown probability, ensure circuit safe and stable operation.
(1) under the premise of unobvious aggravate conductor load, 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 the air gap coverage improves lifting between wire
More than 30%, improve transmission line of electricity normal operation gap coverage and ensure circuit safe and stable operation；
(2) clearance distance deficiency under extraneous various unfavorable conditions can be effectively administered, wire discharges shaft tower component, wire
Electric discharge, wire will not be hit when air gap distance significantly reduces between line and atural object between online to periphery object discharge situation
Wear and even result in tripping operation stoppage in transit；
(3) coatings are coated to transmission line of electricity and wrap up insulating sheath and can be applicable on built transmission line of electricity, between pair
Stand-off distance carries out improvement from wretched insufficiency circuit and remedied, and also can be applicable on newly-built circuit, ensures when alleviating transmission of electricity corridor anxiety defeated
The problem of electric line safe distance difficulty is big.
Brief description of the drawings
Fig. 1 is that a kind of transmission line of electricity for the method for improving transmission line of electricity the air gap coverage coats PTV insulating materials
Structural representation；
Fig. 2 is the knot that a kind of transmission line of electricity for the method for improving transmission line of electricity the air gap coverage wraps up insulating sheath
Structure schematic diagram；
1st, steel core；2nd, aluminum stranded conductor；3rd, PTV insulating materials；4th, buckle；5th, insulating sheath.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with the accompanying drawings and embodiment, it is right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only 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
When part discharges, it should use in electric transmission line isolator high-pressure side side of wire；When puncturing between improvement line, it should use in transmission line of electricity shelves
Away from each maximum arc sag；During for administering wire to periphery object discharge, it should use in wire easily close to 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 the surface stock of aluminum stranded conductor 2, coating at least three times PTV insulation
Material 3, per the minor tick time of 30 minutes, it is in certain shape that final coating makes conductive line surfaces to certain thickness；This is certain
Shape can be approximate cylindric.
2) solidify, the wire for coating completion is hung 20 hours~30 hours at normal temperatures, makes leading for coating coatings
Line is fully cured；The external diameter of 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 both ends of insulating sheath 5 possess raised and groove respectively.Applied respectively in raised and groove
RTV insulating materials is covered, raised and groove is closed up, as shown in Fig. 2 forming buckle 4, the buckle 4 closed up still suffers from certain gap,
RTV insulating materials need to be irrigated at the gap closed up, the bonding of buckle 4 ensures insulating sheath 5 with supplementary irrigation RTV insulating materials at gap
Close up it is rear seamless without electric weak spot, wherein, sheath is buckle-type.
Projection mutually presses with groove can close up in hollow cylindrical.Insulating sheath is silicon rubber.In addition, insulating sheath
Thickness be not less than 3 millimeters.
A kind of measure of the raising transmission line of electricity the air gap coverage formed more than is proved to administer effect through experiment
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 raising, is implemented simply, with stabilization, reliably without bad pair plus is acted on.
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 the surface stock of aluminum stranded conductor 2, n times PTV insulating materials is coated
3, per the minor tick time of 50 minutes, it is in certain shape that final coating makes conductive line surfaces to certain thickness；This certain shape
Can be approximate cylindric.
2) solidify, the wire for coating completion is hung 20 hours~30 hours at normal temperatures, makes leading for coating coatings
Line is fully cured；The external diameter of 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 both ends of insulating sheath 5 possess raised and groove respectively.Applied respectively in raised and groove
RTV insulating materials is covered, raised and groove is closed up, form buckle 4, the buckle 4 closed up still suffers from certain gap, need to close up
RTV insulating materials is irrigated at gap, the bonding of buckle 4 is closed up rear seamless with supplementary irrigation RTV insulating materials guarantee insulating sheath 5 at gap
Gap is without electric weak spot.Wherein, sheath is buckle-type.
Projection mutually presses with groove can close up in hollow cylindrical.Insulating sheath is silicon rubber, in addition, insulating sheath
Thickness be not less than 4 millimeters.
A kind of measure of the raising transmission line of electricity the air gap coverage formed more than is proved to administer effect through experiment
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 raising, is implemented simply, with stabilization, reliably without bad pair plus is acted on.
Embodiment described above only expresses embodiments of the present invention, and its description is more specific and detailed, but can not
Therefore it is interpreted as the limitation 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, various modifications and improvements can be made, these belong to the protection model of the present invention
Enclose.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (4)
- A kind of 1. 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, coating at least PTV insulating materials three times, Per the minor tick regular hour, it is in certain shape that final coating makes conductive line surfaces to certain thickness；2) solidify, the wire for coating completion is hung 20 hours~30 hours at normal temperatures, makes the wire of coating coatings complete All solidstate；3) insulating sheath is wrapped up, the both ends of insulating sheath possess raised and groove respectively, and RTV is respectively coated in raised and groove Insulating materials, raised and groove is closed up, RTV insulating materials is irrigated at the gap closed up；In step 1), the interval time is more than 20 minutes~50 minutes；In step 2), the external diameter of the wire after solidification should be not less than the external diameter 1/5 of the wire before solidification；The thickness of the insulating sheath is not less than 2~5 millimeters.
- A kind of 2. method for improving transmission line of electricity the air gap coverage according to claim 1, it is characterised in that：Institute It is buckle-type to state sheath.
- A kind of 3. method for improving transmission line of electricity the air gap coverage according to claim 1, it is characterised in that：Institute Stating raised mutually pressed with the groove can close up in hollow cylindrical.
- A kind of 4. method for improving transmission line of electricity the air gap coverage according to claim 1, it is characterised in that：Step It is rapid 3) in, the insulating sheath is silicon rubber.
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 CN106448947A (en) | 2017-02-22 |
| CN106448947B true CN106448947B (en) | 2017-12-29 |
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| 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 |
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| 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 (4)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2016
- 2016-09-27 CN CN201610859768.3A patent/CN106448947B/en active Active
Patent Citations (4)
| 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 |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN106448947A (en) | 2017-02-22 |
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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. |