CN206452082U - The earthing mechanism of OPGW on transformer station's outlet framework - Google Patents
The earthing mechanism of OPGW on transformer station's outlet framework Download PDFInfo
- Publication number
- CN206452082U CN206452082U CN201621484766.2U CN201621484766U CN206452082U CN 206452082 U CN206452082 U CN 206452082U CN 201621484766 U CN201621484766 U CN 201621484766U CN 206452082 U CN206452082 U CN 206452082U
- Authority
- CN
- China
- Prior art keywords
- transformer station
- opgw
- splice tray
- outlet framework
- framework
- 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.)
- Active
Links
Landscapes
- Cable Accessories (AREA)
Abstract
The utility model discloses a kind of earthing mechanism of the OPGW on transformer station's outlet framework, the problem of easily occurring when OPGW enters on the outlet framework in transformer station by strong lightning current scaling loss is solved.Including transformer station's outlet framework（1）, in transformer station's outlet framework（1）Top be fixedly installed ground terminal（2）, in ground terminal（2）On be provided with insulator string（3）, in insulator string（3）On be connected with OPGW（4）, in transformer station's outlet framework（1）On be provided with splice tray（12）, in transformer station's outlet framework（1）With OPGW（4）Between be provided with three reliable earth points.Earth point is set in the place for easily occurring gap discharge, and is attached with Special grounding wire, while setting insulation measures during in the case where drawing, it is ensured that downlead draws lower process and insulated with framework hardware.
Description
Technical field
The present invention relates to a kind of earthing mechanism of OPGW, on more particularly to a kind of transformer station's outlet framework
OPGW earthing mechanism.
Background technology
OPGW（OPGW optical cables）A critical function can serve as the aerial earth wire of transmission line of electricity.When
OPGW from electric power line pole tower enter transformer station in outlet framework on when, due to coupled defeated
The grounding resistance of electric wire line pole tower is much larger than the grounding resistance of transformer station, it may appear that some new situations；When power transmission line meets thunder and lightning on the way
Or during the sensing of other overvoltage, have electric current and be diverted through OPGW optical cables, OPGW light is pulled to be contacted with the bad of framework, can be formed
Contact resistance, usually transformer station's induced-current is not high, the heat of formation, it is difficult to reach the fusing point of OPGW metal materials, can only add
Speed this at optical cable metal level aging.And once strong lightning current by when the pulse electricity that OPGW light pulls instantaneously acted on due to thunder and lightning
Stream is very big, sometimes up to hundreds of kiloamperes more than, although asking very short when continuing, normally only tens to hundreds of microsecond, due to
There is contact resistance, it is easy to form electric arc, the electric arc is fatal to the strand of OPGW optical cables, easily cause OPGW optical cables by
Gradually melt and interrupt.In addition, OPGW optical cables draw on outlet framework under when, the incomplete contact between meeting and hardware can shape
Into small―gap suture, under thunder and lightning or power network overvoltage effect, will occur disruptive discharge, after gap breakdown, because circuit is to OPGW
Light pull the distribution capacity between lightning conducter afterflow effect, arc channel will capacitance current effect under sustained combustion, cause
OPGW optical cables are stranded, or even blow completely.
The content of the invention
The invention provides a kind of earthing mechanism of the OPGW on transformer station's outlet framework, light is solved
Easily occur when fine composite overhead ground wire enters on the outlet framework in transformer station by the technical problem of strong lightning current scaling loss.
The present invention is to solve above technical problem by the following technical programs：
A kind of earthing mechanism of OPGW on transformer station's outlet framework, including transformer station's outlet framework,
Ground terminal is fixedly installed on the top of transformer station's outlet framework, insulator string is provided with ground terminal, on insulator string
OPGW is connected with, splice tray is provided with transformer station's outlet framework, the upper end of terminal is provided with ground on ground
Earthing block above splice tray is provided with terminal upper end earthing block, transformer station's outlet framework above splice tray, in splice tray
Earthing block below splice tray is provided with transformer station's outlet framework of lower section, the lower end of transformer station's outlet framework is provided with remaining cable
Frame, after OPGW draws along under transformer station's outlet framework, links together, in power transformation after remaining cable frame with splice tray
Stand and the downlead card with plastics foot pad is provided between outlet framework and the lower lead of OPGW, on ground terminal
The first parallel groove clamp is provided with the lower lead of OPGW on the outside of termination plot, in the first parallel groove clamp and ground
The first Special grounding wire is provided between the earthing block of terminal upper end；In the optical fiber composite overhead above splice tray on the outside of earthing block
The second parallel groove clamp is provided with the lower lead of line, second is provided between earthing block above the second parallel groove clamp and splice tray
Special grounding wire；The 3rd and ditch line are provided with the lower lead of OPGW between remaining cable frame and splice tray
Folder, the 3rd Special grounding wire is provided between earthing block below the 3rd parallel groove clamp and splice tray.
Height of the earthing block away from ground is that height of the earthing block away from ground is below 2800 millimeters, splice tray above splice tray
1800 millimeters.
The reason for present invention forms stranded for OPGW, sets in the place for easily occurring gap discharge and connects
Place, and being attached with Special grounding wire, at the same draw it is lower during insulation measures are set, it is ensured that downlead draw lower process with
Framework hardware insulate.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings：
A kind of earthing mechanism of OPGW on transformer station's outlet framework, including transformer station's outlet framework 1,
Ground terminal 2 is fixedly installed on the top of transformer station's outlet framework 1, insulator string 3 is provided with ground terminal 2, in insulator string
OPGW 4 is connected with son 3, splice tray 12 is provided with transformer station's outlet framework 1, terminal 2 is upper on ground
End is provided with ground terminal upper end earthing block 7, is provided with above splice tray and connects on transformer station's outlet framework 1 of the top of splice tray 12
Earthing block 15 below splice tray are provided with plot 11, transformer station's outlet framework 1 below splice tray 12, in transformer station's outlet
The lower end of framework 1 is provided with remaining cable frame 16, after OPGW 4 draws along under transformer station's outlet framework 1, through remaining cable frame 16
Link together, be provided between transformer station's outlet framework 1 and the lower lead of OPGW 4 with splice tray 12 afterwards
Downlead card 8 with plastics foot pad, sets on the lower lead of the OPGW 4 in the outside of ground terminal upper end earthing block 7
The first parallel groove clamp 5 is equipped with, the first Special grounding wire is provided between the first parallel groove clamp 5 and ground terminal upper end earthing block 7
6；The second parallel groove clamp 9 is provided with the lower lead of the OPGW 4 above splice tray on the outside of earthing block 11,
Above second parallel groove clamp 9 and splice tray the second Special grounding wire 10 is provided between earthing block 11；In remaining cable frame 16 with continuing
Be provided with the 3rd parallel groove clamp 13 on the lower lead of OPGW 4 between box 12, the 3rd parallel groove clamp 13 with
Below splice tray the 3rd Special grounding wire 14 is provided between earthing block 15.
Height b of the earthing block 11 away from ground is 2800 millimeters above splice tray, and splice tray lower section earthing block 15 is away from ground
Height U is 1800 millimeters.
OPGW optical cables drawn by strain clamp it is lower after, by parallel groove clamp, transformer station's outlet structure is connected to special ground wire
On the upside of frame, earth point at first is formed, ground terminal upper end earthing block 7 is located at position of 300 millimeters away from framework top, ground terminal
Section should be not less than ground terminal section in transformer station, and OPGW optical cables downlead uses the drop wire clip 8 of tape insulation rubber cushion, and should
The minimum range between OPGW and frame member is set to be not less than 20 millimeters, the spacing of insulated down lead clamp 8 is 1.5 meters.Under framework
End, OPGW downleads are connected to position of 2800 millimeters away from ground before remaining cable frame 16 is entered with the second Special grounding wire 10
Above reserved splice tray on earthing block 11, earth point at second is formed, it is reserved to continue in 1800 millimeters of position of height off the ground
Earthing block 15 below box, optical cable end is connected to herein by the 3rd Special grounding wire 14, forms earth point at the 3rd, and guarantee can
By connection.
The following is the determination method of touchdown elevation：
The setting principle of earth point is：First, it is ensured that in short circuit and thunderbolt, electric current can pass through OPGW and be incorporated to
Ground, should not produce electrical discharge arc etc.；Second, setting for ground terminal will be close proximity to the easy position for occurring gap discharge.In frame
Structure terminal lower end typically have plate platform for connecting phase conductor, the component is more sharp, and prominent, easily and OPGW generations
Point discharge, therefore earth point should be nearby set here, while considering to answer top earth point should be close to downlead upper end, therefore
300 millimeters of position sets ground terminal below away from framework ground wire top end.Remaining cable frame and splice tray are easy at other two
The place of electric charge is put aside, it is and in irregular shape, easily spark discharge is produced, it is necessary to before remaining cable frame and splice tray is entered, it is right
OPGW carries out reliable ground, therefore the height of the second ground terminal and the 3rd ground terminal and the height of remaining cable frame and splice tray have
Close, the requirement for the acceptance specification that communicated according to power optical fiber, interior portal frame line terminal splice tray setting height(from bottom) of standing is preferably 1-2 meters,
It is main consider it is following some：One is relatively safe in transformer station, and the possibility destroyed by external force is smaller；Two are easy for dimension
Shield；Three be that access lines interval is closer in transformer station.If splice tray is installed into higher, often with the jumper string of adjacent lines
The phase line height supported, when optical cable overhauls or rushed to repair dismounting splice tray, if misoperation, is held almost or apart from close
Easily the steel band of fixed splice tray is ejected, causes steel band and the safe distance of adjacent phase line not enough to produce electric discharge.In summary
The height of splice tray is set to 2 meters, according to the bending radius of optical cable, the height of remaining cable frame is set to 1.5 meters, is considered simultaneously
It is higher than remaining cable frame to splice tray, therefore, the second ground terminal is located at OPGW and entered before remaining cable frame, is highly 2.8 meters, the 3rd connects
Ground terminal is arranged on OPGW and entered before splice tray, is highly 1.8 meters.
Claims (2)
1. a kind of earthing mechanism of the OPGW on transformer station's outlet framework, including transformer station's outlet framework（1）,
In transformer station's outlet framework（1）Top be fixedly installed ground terminal（2）, in ground terminal（2）On be provided with insulator string（3）,
In insulator string（3）On be connected with OPGW（4）, in transformer station's outlet framework（1）On be provided with splice tray
（12）, it is characterised in that in ground terminal（2）Upper end be provided with ground terminal upper end earthing block（7）, in splice tray（12）Top
Transformer station's outlet framework（1）On be provided with earthing block above splice tray（11）, in splice tray（12）Transformer station's wire-outlet rack of lower section
Structure（1）On be provided with earthing block below splice tray（15）, in transformer station's outlet framework（1）Lower end be provided with remaining cable frame（16）,
OPGW（4）Along transformer station's outlet framework（1）Under draw after, through remaining cable frame（16）Afterwards with splice tray（12）It is connected to
Together, in transformer station's outlet framework（1）With OPGW（4）Lower lead between be provided with drawing with plastics foot pad
Lower line card（8）, in ground terminal upper end earthing block（7）The OPGW in outside（4）Lower lead on be provided with first
Parallel groove clamp（5）, in the first parallel groove clamp（5）With ground terminal upper end earthing block（7）Between be provided with the first Special grounding wire
（6）；The earthing block above splice tray（11）The OPGW in outside（4）Lower lead on be provided with second and ditch line
Folder（9）, in the second parallel groove clamp（9）With earthing block above splice tray（11）Between be provided with the second Special grounding wire（10）；
Remaining cable frame（16）With splice tray（12）Between OPGW（4）Lower lead on be provided with the 3rd parallel groove clamp
（13）, in the 3rd parallel groove clamp（13）With earthing block below splice tray（15）Between be provided with the 3rd Special grounding wire（14）.
2. the earthing mechanism of the OPGW on a kind of transformer station's outlet framework according to claim 1, its
It is characterised by, earthing block above splice tray（11）Height away from ground（b）For 2800 millimeters, splice tray lower section earthing block（15）Away from
The height on ground（U）For 1800 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621484766.2U CN206452082U (en) | 2016-12-31 | 2016-12-31 | The earthing mechanism of OPGW on transformer station's outlet framework |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621484766.2U CN206452082U (en) | 2016-12-31 | 2016-12-31 | The earthing mechanism of OPGW on transformer station's outlet framework |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206452082U true CN206452082U (en) | 2017-08-29 |
Family
ID=59674122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621484766.2U Active CN206452082U (en) | 2016-12-31 | 2016-12-31 | The earthing mechanism of OPGW on transformer station's outlet framework |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206452082U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786315A (en) * | 2016-12-31 | 2017-05-31 | 中国能源建设集团山西省电力勘测设计院有限公司 | The earthing mechanism of the OPGW on transformer station's outlet framework |
| CN110596462A (en) * | 2019-10-28 | 2019-12-20 | 中国能源建设集团安徽省电力设计院有限公司 | Lightning protection grounding structure of high-rise vertical tower based on tower wave impedance analysis in lightning stroke and multi-section impedance analysis method of high-rise vertical tower |
-
2016
- 2016-12-31 CN CN201621484766.2U patent/CN206452082U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786315A (en) * | 2016-12-31 | 2017-05-31 | 中国能源建设集团山西省电力勘测设计院有限公司 | The earthing mechanism of the OPGW on transformer station's outlet framework |
| CN110596462A (en) * | 2019-10-28 | 2019-12-20 | 中国能源建设集团安徽省电力设计院有限公司 | Lightning protection grounding structure of high-rise vertical tower based on tower wave impedance analysis in lightning stroke and multi-section impedance analysis method of high-rise vertical tower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103928896A (en) | Method for preventing OPGW optical cable connected to substation structure from being broken by lightning strokes | |
| CN203734209U (en) | Live working device for cable bypass | |
| CN201408939Y (en) | Electrified arc extinguishing tool for dismounting and jointing cable tail wires with 10 kV | |
| CN105604812B (en) | Lightning receptor, blade lightning protection system and blade of wind generating set | |
| CN106786315A (en) | The earthing mechanism of the OPGW on transformer station's outlet framework | |
| CN206452082U (en) | The earthing mechanism of OPGW on transformer station's outlet framework | |
| CN203445579U (en) | Lightning protection device for cable terminal | |
| CN204012599U (en) | A kind of tower apparatus of stepping on based on dry-type cable terminal | |
| CN210957548U (en) | GIS distribution device's transmission of electricity structure | |
| CN101174497A (en) | Lightning protection supporting insulator and insulated cable used with it | |
| CN217360393U (en) | Insulation down-lead grounding device of OPGW optical cable | |
| CN204012185U (en) | The multi-functional lightning arrester of a kind of overhead transmission line adjustable clearance | |
| CN2864716Y (en) | Terminal joint case for optical fiber composite phase wire | |
| CN105529697A (en) | OPGW (Optical Fiber Composite Overhead Ground Wire) optical cable lightning protection apparatus mounted on parapet wall | |
| CN106298106B (en) | A kind of lightning protection line insulator with pressure and discharging gap function | |
| CN206210482U (en) | A kind of lightning protection line insulator with pressure and discharging gap function | |
| CN204332890U (en) | With the fuse switch of electricity-detection grounding device | |
| CN206400166U (en) | Cable fitting more than a kind of double cable OPGW of transformer station's single pole | |
| CN102445592B (en) | Vacuum switch and cable connection electricity testing device | |
| CN203632182U (en) | Lightning protection device of 20kV overhead line | |
| CN206117082U (en) | Energy -conserving connecting device of ground wire safety | |
| CN105301295B (en) | House cable inlet wire Transformer Winding short-circuit device | |
| CN212624822U (en) | Novel overhead transmission line lightning conductor | |
| CN103840421A (en) | Cable terminal lightning arrester | |
| CN202434935U (en) | OPGW (optical power ground wire) optical fiber grounding device for transformer substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |