CN105336455A - Insulator string and parallel-connection gap for DC grounding electrode line - Google Patents
Insulator string and parallel-connection gap for DC grounding electrode line Download PDFInfo
- Publication number
- CN105336455A CN105336455A CN201510909173.XA CN201510909173A CN105336455A CN 105336455 A CN105336455 A CN 105336455A CN 201510909173 A CN201510909173 A CN 201510909173A CN 105336455 A CN105336455 A CN 105336455A
- Authority
- CN
- China
- Prior art keywords
- insulator string
- arcing horn
- blow
- out unit
- parallel connection
- 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.)
- Pending
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 47
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000741 silica gel Substances 0.000 claims description 7
- 229910002027 silica gel Inorganic materials 0.000 claims description 7
- 239000011787 zinc oxide Substances 0.000 claims description 4
- 238000010791 quenching Methods 0.000 abstract 5
- 230000000171 quenching effect Effects 0.000 abstract 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 238000010891 electric arc Methods 0.000 description 3
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000001681 protective 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
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/46—Means for providing an external arc-discharge path
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/48—Means for obtaining improved distribution of voltage; Protection against arc discharges over chains or other serially-arranged insulators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
Abstract
The invention discloses an insulator string parallel-connection gap for a DC grounding electrode line. The gap comprises an upper hanging plate, an arc quenching unit, an upper arcing horn, an insulator string, a lower arching horn and a lower hanging plate. The upper hanging plate and the arc quenching unit are connected to the upper end of the insulator string at the same time. The end, away from the insulator string, of the arch quenching unit is connected with the streamline type upper arcing horn extending to the lower portion. The arc quenching unit is a nonlinear resistor composed of resistor pieces. The lower end of the insulator string is connected with the lower hanging plate and the lower arcing horn at the same time. The lower arcing horn is of a streamline structure and extends towards the upper arcing horn. The arc quenching unit, the upper arcing horn and the lower arcing horn form the parallel-connection gap. When a single-electrode ground return runs, electric arcs can be rapidly powered off after DC follow currents are produced by a lightning grounding electrode circuit, and the aim of protecting the insulator string and the grounding electrode circuit is achieved.
Description
Technical field
The present invention relates to insulator string parallel connection gaps field, be specifically related to a kind of DC earthing polar curve insulator string parallel connection gaps.
Background technology
Current existing direct current grounding pole line insulator string parallel connection gaps, because direct current system most time is in bipolar metallic return operational mode, the earth current that direct current grounding pole circuit passes through is very little, if ground electrode circuit is impacted by overvoltage in the case, the electric arc of continuation after parallel connection gaps punctures, can not be produced; If but ground electrode circuit works in monopolar ground return operational mode, ground electrode circuit electric current is excessive, if ground electrode circuit is struck by lightning in this case, or because switching impulse causes insulator string parallel connection to puncture, puncturing rear electric arc cannot automatic distinguishing, and ground electrode circuit will inevitably be caused to damage.
Summary of the invention
The invention provides a kind of can the DC earthing polar curve insulator string parallel connection gaps of rapid blow-out after lightning impulse terminates.
The technical solution used in the present invention is: a kind of DC earthing polar curve insulator string parallel connection gaps, comprises upper hanging plate, blow-out unit, upper arcing horn, insulator string, lower arcing horn and lower link plate; Described insulator string upper end connects upper hanging plate and blow-out unit simultaneously; Blow-out unit is connected with away from one end of insulator string the streamlined upper arcing horn that lower portion extends; Blow-out unit is the nonlinear resistance that resistor disc is formed; Insulator string lower end connects lower link plate and lower arcing horn simultaneously; Lower arcing horn is streamlined structure, and upwards arcing horn direction extends; Blow-out unit, upper arcing horn and lower arcing horn form parallel connection gaps.
Further, the vertical line distance between described upper arcing horn and lower arcing horn is less than or equal to 85% of insulator string length.
Further, described upper arcing horn is the segmental arc to downward-extension near blow-out unit one end, and the other end is the segmental arc upwards extended.
Further, described lower arcing horn is straightway near blow-out unit one end, and the other end is the straightway upwards extended.
Further, described upper arcing horn is provided with spheric electrode away from blow-out unit one end; Lower arcing horn is provided with spheric electrode away from blow-out unit one end.
Further, described resistor disc is zinc oxide resistance sheet.
Further, described blow-out unit is outside equipped with full skirt shape silica gel outer.
Further, described silica gel outer every sheet umbrella tangent plane is isosceles triangle.
Further, described upper hanging plate is UB type link plate, and lower link plate is socket-clevis eye.
Further, described upper hanging plate is all connected with insulator string by QP link with blow-out unit.
The invention has the beneficial effects as follows:
(1) after the present invention can make ground electrode circuit be struck by lightning when monopolar ground return runs, direct current afterflow can self-extinguish;
(2) the present invention is easy to install, and structure is simple, practical;
(3) arcing horn top of the present invention is provided with spheric electrode, and not fragile, the life-span is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1-upper hanging plate, 2-blow-out unit, the upper arcing horn of 3-, 4-QP link, 5-insulator string, link plate under 6-, arcing horn under 7-.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
A kind of DC earthing polar curve insulator string parallel connection gaps, comprises upper hanging plate 1, blow-out unit 2, upper arcing horn 3, insulator string 5, lower arcing horn 7 and lower link plate 6; Described insulator string 5 upper end connects upper hanging plate 1 and blow-out unit 2 simultaneously; Blow-out unit 2 is connected with away from one end of insulator string 5 the streamlined upper arcing horn 3 that lower portion extends; The nonlinear resistance that blow-out unit 2 is formed for resistor disc; Insulator string 5 lower end connects lower link plate 6 and lower arcing horn 7 simultaneously; Lower arcing horn 7 is streamlined structure, and upwards arcing horn 3 direction extends; ; Blow-out unit 2, upper arcing horn 3 and lower arcing horn 7 form parallel connection gaps; During use, upper hanging plate 1, blow-out unit 2 and upper arcing horn 3 are all fixedly connected with shaft tower crosspiece end gold utensil; Lower link plate 6, lower arcing horn 7 are all fixedly connected with ground electrode circuit wire gold utensil with insulator string 5 lower end; When thunderbolt ground electrode circuit wire cause air gap puncture with blow-out unit 2 conducting after, blow-out unit 2 presents low-resistance characteristic, and after lightning discharge terminates, blow-out unit 2 recovers high resistant characteristic, and direct current afterflow is cut off, and ensures that ground electrode circuit recovers normal and runs.
Further, the vertical line distance between described upper arcing horn 3 and lower arcing horn 7 is less than or equal to 85% of insulator string 5 length; The distance of air gap can adjust according to the size of current of DC earthing polar curve and experience.
Further, described upper arcing horn 3 is the segmental arc to downward-extension near blow-out unit 2 one end, and the other end is the segmental arc upwards extended; Upper arcing horn 3 is set to arc and arcing horn top can be avoided to occur the situation of point discharge, and is damaged by upper arcing horn 3.
Further, described lower arcing horn 7 is straightway near blow-out unit 2 one end, and the other end is the straightway upwards extended.
Further, described upper arcing horn 3 is provided with spheric electrode away from blow-out unit 2 one end; Lower arcing horn 7 is provided with spheric electrode away from blow-out unit 2 one end; Arranging spheric electrode is also the situation avoiding arcing horn to occur point discharge, thus protective device is not damaged.
Further, described resistor disc is zinc oxide resistance sheet; High (maximum>=the 800J/cm of zinc oxide resistance sheet unit thermal capacitance
3), super high power (can arbitrarily integrated combination), volume little (with same power metal resistance ratio comparatively volume only have 15%), moment through-current capability be oxidized by force, or not corrosion-resistant, the life-span long, high temperature resistant (maximum operating temperature can reach 500 DEG C), noninductive, resistivity is controlled (resistivity 10
-2~ 10
2Ω m).
Further, described blow-out unit 2 is outside equipped with full skirt shape silica gel outer; Arrange silica gel outer to seal blow-out unit 2, protection blow-out unit 2 is not contaminated and damage; Outer surface is set to the displacement that full skirt shape can increase electric charge.
Further, described silica gel outer every sheet umbrella tangent plane is isosceles triangle.
Further, described upper hanging plate 1 is UB type link plate, and lower link plate 6 is socket-clevis eye; UB type link plate is suitable for and being fixedly connected with of shaft tower crosspiece gold utensil more; Socket-clevis eye is applicable to fixing between insulator string 5 and ground electrode circuit wire gold utensil.
Further, described upper hanging plate 1 is all connected with insulator string 5 by QP link 4 with blow-out unit 2.
The present invention when monopolar ground return runs, can turn off electric arc rapidly after thunderbolt ground electrode circuit produces direct current afterflow, plays the object of protection insulator string 5 and ground electrode circuit.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a DC earthing polar curve insulator string parallel connection gaps, is characterized in that: comprise upper hanging plate (1), blow-out unit (2), upper arcing horn (3), insulator string (5), lower arcing horn (7) and lower link plate (6); Described insulator string (5) upper end connects upper hanging plate (1) and blow-out unit (2) simultaneously; Blow-out unit (2) is connected with away from one end of insulator string (5) the streamlined upper arcing horn (3) extended downwards; The nonlinear resistance that blow-out unit (2) is formed for resistor disc; Insulator string (5) lower end connects lower link plate (6) and lower arcing horn (7) simultaneously; Lower arcing horn (7) is streamlined structure, and upwards arcing horn (3) direction extends; Blow-out unit (2), upper arcing horn (3) and lower arcing horn (7) form parallel connection gaps.
2. a kind of DC earthing polar curve insulator string parallel connection gaps according to claim 1, is characterized in that: the vertical line distance between described upper arcing horn (3) and lower arcing horn (7) is less than or equal to 85% of insulator string (5) length.
3. a kind of DC earthing polar curve insulator string parallel connection gaps according to claim 1, is characterized in that: described upper arcing horn (3) is the segmental arc to downward-extension near blow-out unit (2) one end, and the other end is the segmental arc upwards extended.
4. a kind of DC earthing polar curve insulator string parallel connection gaps according to claim 1, is characterized in that: described lower arcing horn (7) is straightway near blow-out unit (2) one end, and the other end is the straightway upwards extended.
5. a kind of DC earthing polar curve insulator string parallel connection gaps according to claim 1, is characterized in that: described upper arcing horn (3) is provided with spheric electrode away from blow-out unit (2) one end; Lower arcing horn (7) is provided with spheric electrode away from blow-out unit (2) one end.
6. a kind of DC earthing polar curve insulator string parallel connection gaps according to claim 1, is characterized in that: described resistor disc is zinc oxide resistance sheet.
7. a kind of DC earthing polar curve insulator string parallel connection gaps according to claim 1, is characterized in that: described blow-out unit (2) is outside equipped with full skirt shape silica gel outer.
8. a kind of DC earthing polar curve insulator string parallel connection gaps according to claim 7, is characterized in that: described silica gel outer every sheet umbrella tangent plane is isosceles triangle.
9. a kind of DC earthing polar curve insulator string parallel connection gaps according to claim 1, is characterized in that: described upper hanging plate (1) is UB type link plate, and lower link plate (6) is socket-clevis eye.
10. a kind of DC earthing polar curve insulator string parallel connection gaps according to claim 1, is characterized in that: described upper hanging plate (1) is all connected with insulator string (5) by QP link (4) with blow-out unit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510909173.XA CN105336455A (en) | 2015-12-10 | 2015-12-10 | Insulator string and parallel-connection gap for DC grounding electrode line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510909173.XA CN105336455A (en) | 2015-12-10 | 2015-12-10 | Insulator string and parallel-connection gap for DC grounding electrode line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105336455A true CN105336455A (en) | 2016-02-17 |
Family
ID=55286919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510909173.XA Pending CN105336455A (en) | 2015-12-10 | 2015-12-10 | Insulator string and parallel-connection gap for DC grounding electrode line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105336455A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082652A (en) * | 2019-04-29 | 2019-08-02 | 电力规划总院有限公司 | Choosing method, the device of arcing horn and insulator chain in overhead transmission line |
| CN110120285A (en) * | 2019-06-12 | 2019-08-13 | 西南交通大学 | A kind of arcing horn arc-control device |
-
2015
- 2015-12-10 CN CN201510909173.XA patent/CN105336455A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082652A (en) * | 2019-04-29 | 2019-08-02 | 电力规划总院有限公司 | Choosing method, the device of arcing horn and insulator chain in overhead transmission line |
| CN110082652B (en) * | 2019-04-29 | 2021-09-03 | 电力规划总院有限公司 | Selection method and device for arcing horn and insulator string in overhead transmission line |
| CN110120285A (en) * | 2019-06-12 | 2019-08-13 | 西南交通大学 | A kind of arcing horn arc-control device |
| CN110120285B (en) * | 2019-06-12 | 2020-03-31 | 西南交通大学 | Arc extinguishing device for arcing horn |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160217 |