CN106842448A - A kind of enterprising remaining cable case of cable insulation landing of transformer station - Google Patents
A kind of enterprising remaining cable case of cable insulation landing of transformer station Download PDFInfo
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- CN106842448A CN106842448A CN201710071747.XA CN201710071747A CN106842448A CN 106842448 A CN106842448 A CN 106842448A CN 201710071747 A CN201710071747 A CN 201710071747A CN 106842448 A CN106842448 A CN 106842448A
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- opgw
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4441—Boxes
- G02B6/4446—Cable boxes, e.g. splicing boxes with two or more multi fibre cables
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4452—Distribution frames
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
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Abstract
The present invention relates to remaining cable box technology field, remaining cable case is landed in a kind of especially enterprising cable insulation of transformer station, including leading-in device under casing and OPGW optical cables, OPGW optical cables enter casing by leading-in device under OPGW optical cables from gate framework top, casing is located at the bottom of gate framework, leading-in device includes OPGW pressure limiting devices and fixing device under the optical cable, the OPGW pressure limiting devices are located at the top of gate framework, pin insulator is installed in the fixing device, present invention insulation is reliable, ground connection property is good, effectively solve the galvanic corrosion of OPGW optical cables and burn cable, the hidden danger such as stranded, and easy construction, safeguard simple, with good promotional value.
Description
Technical field
The present invention relates to remaining cable box technology field, more particularly to a kind of enterprising remaining cable case of cable insulation landing of transformer station.
Background technology
Current some electrical power company in the case where transformer station OPGW is drawn by gate framework, in the liftoff 1.5 meters place's uses of OPGW optical cables
Parallel groove clamp, ground wire and gate framework Special grounding device ground connection, OPGW optical cables pass through φ 50mm in 1 meter of high position from the ground
Hot galvanized steel pipe, OPGW optical cables through hot galvanized steel pipe enter cable duct before, it is necessary to pass through insulating sleeve, it is ensured that OPGW light
Cable insulate with coating steel pipe, gate framework, the earth.OPGW optical cables enter the remaining cable case of landing from cable duct, and OPGW reels are present
On the positive metal spider in remaining cable case inside, ordinary optical cable is taken inventory on cable frame more than the metal at the remaining cable case back side, OPGW joints
Box is arranged on the remaining positive upper left corner of cable case, and for OPGW optical cables and ordinary optical cable welding, the good ordinary optical cable of welding is along cable
Ditch enters transformer substation communication computer room.
The remaining cable case application of OPGW landings is reference《Q/GDW 758-2012 communication of power system optical cable mounting process specifications》
Appendix B design, although better appearance in appearance, and be also in theory solve OPGW enter " reliable Insulation Problems ", it is but real
OPGW optical cables reliability Insulation Problems are not fully solved on border, while annual insulation control detection, measurement transformer station are done by transformer station
Stepped on during grounded screen electric resistance bar operation it is inconvenient, it is dangerous the problems such as.
OPGW optical cables are drawn lower whole folder using rubber and keep insulation to fix on OPGW optical cables and gantry framework from gate framework.
It is short-term to solve OPGW optical cables and gate framework, the Insulation Problems of the earth, but rubber folder, rubber blanket are used in transformer station's high voltage induction
Rubber can be accelerated to aoxidize in electrical environment, easily cause the de- cable abutment extending problem of OPGW optical cables.
The content of the invention
The invention aims to solving to have poor insulativity in the prior art, being grounded illusive shortcoming, and propose
A kind of transformer station enterprising cable remaining cable case of insulation landing.
To achieve these goals, present invention employs following technical scheme：
Design a kind of enterprising remaining cable case of cable insulation landing of transformer station, including leading-in device, OPGW light under casing and OPGW optical cables
Cable enters casing by leading-in device under OPGW optical cables from gate framework top, and casing is located at the bottom of gate framework, the optical cable
Lower leading-in device includes OPGW pressure limiting devices and fixing device, and the OPGW pressure limiting devices are located at the top of gate framework, described solid
Determine pin insulator is installed on device, the OPGW optical cables are arranged on pin insulator and pressure limiting device, the pressure limiting dress
Put and be connected with the first ground wire, the other end of first ground wire is connected with gate framework；
The casing top side is provided with into cable hole, is entered cable hole and is provided with nylon insulation tube, the nylon insulation tube upper end
Waterproof end plug is provided with, near entering to be provided with the first lock cable device at cable hole in the casing, is connected with the first lock cable device
Second ground wire, the bottom half is provided with grounding switch, and the grounding switch is connected by ground wire with grounding net of transformer substation, institute
State the second ground wire to be connected with grounding switch, be provided with the casing and be dielectrically separated from plate, the one side for being dielectrically separated from plate is provided with
OPGW disk cable framves, the side for being dielectrically separated from plate is provided with cable-passing hole, and the plate another side that is dielectrically separated from sets at cable-passing hole
There is the second lock cable device, the 3rd ground wire is connected with the second lock cable device, the 3rd ground wire connects with grounding switch
Connect, the back that is dielectrically separated from is provided with optical fiber direct-fusing disk and optical cable fixed seat, and the bottom half is provided with hollow remaining cable case
Base, the bottom and top of the remaining cable bottom seat are equipped with through hole.
Preferably, the fixing device include equidistant arrangement gate framework top tapered pole customization anchor ear, be located at
Herringbone bar of the U-shaped card tool and equidistant arrangement of gate framework middle in gate framework bottom customizes anchor ear, and the tapered pole is determined
Anchor ear processed and herringbone bar customization anchor ear include two semicircular anchor ears and mounting bracket, and the OPGW pressure limiting devices and pin type are exhausted
Edge is each attached on mounting bracket, is connected by two connecting bolts between two semicircle anchor ears.
Preferably, the pressure limiting device includes the high-voltage arc strike rod and low-voltage arcing rod that are parallel to each other, the high-voltage arc strike
The outer equidistant arrangement of rod has multiple overcoat full skirts, and the end of the high-voltage arc strike rod and low-voltage arcing rod is equipped with ball discharge, described
One end of high-voltage arc strike rod is connected with the first ground wire, and the OPGW optical cables are fixed on the other end of high-voltage arc strike rod.
Preferably, the back that is dielectrically separated from is additionally provided with wire carding plate, and the wire carding plate is provided with multiple bunch grooves, described
Wire carding plate is provided with removable cover by bolt.
Preferably, the grounding switch includes plug-in strip and two joints, the series connection of two joints, two joints by plug-in strip and
Ground wire is connected, and second ground wire is connected with one of joint, and the 3rd ground wire is connected with another joint.
Preferably, the casing, OPGW disk cable framves and be dielectrically separated from plate for insulation SMC material or epoxy resin board.
Remaining cable case is landed in the enterprising cable insulation of a kind of transformer station proposed by the present invention, and beneficial effect is：
1. OPGW optical cables are fixed using pin insulator, is effectively ensured between OPGW optical cables and gate framework reliable exhausted
Edge, casing, OPGW disk cables frame, to be dielectrically separated from plate be insulation SMC material or epoxy resin board, has taken inventory and really done after cable more than OPGW
To reliable insulation, it is to avoid the hidden danger such as cable, stranded is burnt in the galvanic corrosion of OPGW optical cables caused by Insulation Problems；
2. be provided with pressure limiting device carries out pressure limiting electric discharge to induced electricity in lightning induction electricity, transformer station, in pressure limiting device, casing
It is equipped with ground wire, it is ensured that reliable ground, avoid caused by problem with grounding OPGW optical cables lightning induction electricity, turn-to-turn electric discharge electricity
Cable, stranded hidden danger are burnt in erosion；
3. ground wire is grounded by earthing switch blade, transformer station OPGW year insulation controls detection, grounding net of transformer substation resistance
During detection, it is only necessary to disconnect the grounding switch switch inside the remaining cable case of insulation, be completed, the grounding switch that closes switch,
The testing time is saved, loss of outage has been reduced, is maintained easily, avoids stepping on bar operating risk.
4.OPGW, through nylon insulation tube, takes inventory in liftoff 2 meters of height into remaining cable case, and OPGW draws lower cable without entering
Cable duct enters casing, eliminates the insulation tube material that OPGW optical cables are passed through.
5. present invention insulation reliability, ground connection property are good, effectively solve the galvanic corrosion of OPGW optical cables and burn the hidden danger, Er Qieshi such as cable, stranded
Work is convenient, safeguard simple, with good promotional value.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the enterprising remaining cable case of cable insulation landing of transformer station proposed by the present invention；
Fig. 2 is a kind of positive structural representation of casing of the enterprising remaining cable case of cable insulation landing of transformer station proposed by the present invention
Figure；
Fig. 3 is a kind of structural representation of the box back surface of the enterprising remaining cable case of cable insulation landing of transformer station proposed by the present invention
Figure；
Fig. 4 is the structural representation at a kind of pressure limiting device of the enterprising remaining cable case of cable insulation landing of transformer station proposed by the present invention
Figure；
Fig. 5 is that the structure at a kind of pin insulator of the enterprising remaining cable case of cable insulation landing of transformer station proposed by the present invention is shown
It is intended to；
Fig. 6 is a kind of structure of the tapered pole customization anchor ear of the enterprising remaining cable case of cable insulation landing of transformer station proposed by the present invention
Schematic diagram；
Fig. 7 is a kind of structure of the herringbone bar customization anchor ear of the enterprising remaining cable case of cable insulation landing of transformer station proposed by the present invention
Schematic diagram；
Fig. 8 is a kind of structural representation of the U-shaped card tool of the enterprising remaining cable case of cable insulation landing of transformer station proposed by the present invention.
In figure：OPGW pressure limiting devices 1, customization anchor ear 3, U-shaped card tool 4, the herringbone bar customization of pin insulator 2, tapered pole are embraced
Hoop 5, waterproof end plug 6, nylon insulation tube 7, casing 8, OPGW disk cables frame 9, OPGW optical cables 10, first lock cable device 11, first connect
Ground wire 12, be dielectrically separated from plate 13, grounding switch 14, optical fiber direct-fusing disk 15, wire carding plate 16, optical cable fixed seat 17, ordinary optical cable 18,
It is remaining cable bottom seat 19, gate framework 20, the second ground wire 21, the 3rd ground wire 22, high-voltage arc strike rod 23, overcoat full skirt 24, low
Pressure starting rod 25, cable-passing hole 26, the lock cable device 28 of ball discharge 27, second.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.
Reference picture 1-8, a kind of enterprising remaining cable case of cable insulation landing of transformer station, including leading-in device under casing 8 and OPGW optical cables,
OPGW optical cables 10 enter casing 8 by leading-in device under OPGW optical cables from the top of gate framework 20, and casing 8 is located at gate framework 20
Bottom, leading-in device includes OPGW pressure limiting devices 1 and fixing device under optical cable, and OPGW pressure limiting devices 1 are located at the top of gate framework 20
Portion, is provided with pin insulator 2 in fixing device, OPGW optical cables 10 are arranged on pin insulator 2 and pressure limiting device 1, pressure limiting
The first ground wire 12 is connected with device 1, the other end of the first ground wire 12 is connected with gate framework 20；OPGW pressure limiting devices 1
Pressure limiting electric discharge is carried out to induced electricity in lightning induction electricity, transformer station.OPGW pressure limiting devices 1 are provided with the first ground wire 12 and ensure that
The reliability of ground connection, OPGW optical cables 10 are arranged on pin insulator 2, and being effectively ensured can between OPGW optical cables and gate framework 20
By insulation, environment is used out of doors, and the life-span is more than 25 years.
The top side of casing 8 is provided with into cable hole, is entered cable hole and is provided with nylon insulation tube 7, and the upper end of nylon insulation tube 7 is provided with anti-
Water blocking first 6, near entering to be provided with the first lock cable device 11 at cable hole in casing 8, the second ground connection is connected with the first lock cable device 11
Line 21, the bottom of casing 8 is provided with grounding switch 14, and grounding switch 14 is connected by ground wire with grounding net of transformer substation, the second ground wire
21 are connected with grounding switch 14, are provided with casing 8 and are dielectrically separated from plate 13, and the one side for being dielectrically separated from plate 13 is provided with OPGW disk cables frame 9,
The side for being dielectrically separated from plate 13 is provided with cable-passing hole 26, is dielectrically separated from the another side of plate 13 and the second lock cable dress is provided with cable-passing hole 26
28 are put, the 3rd ground wire 22 is connected with the second lock cable device 28, the 3rd ground wire 22 is connected with grounding switch 14, is dielectrically separated from
The back side of plate 13 is provided with optical fiber direct-fusing disk 15 and optical cable fixed seat 17, and the bottom of casing 8 is provided with hollow remaining cable bottom seat 19, remaining cable case
The bottom and top of base 19 are equipped with through hole.OPGW optical cables 10 enter inside casing 8 from nylon insulation tube 7, and OPGW draws lower cable
Enter casing without entering cable duct, eliminate the insulation tube material that OPGW optical cables are passed through, then coil by the first lock cable device 11
On OPGW disk cables frame 9, its end enters the back side for being dielectrically separated from plate 13 through cable-passing hole 26, then by the second lock cable device
28, OPGW optical cables 10 divest steel-cored aluminium strand, and the fiber unit with stainless steel tube enters optical fiber direct-fusing disk 15 and transformer station's machine
The welding of ordinary optical cable 18 in room, ordinary optical cable 18 enters from the through hole of 19 bottoms of remaining cable bottom seat, and excess cable is taken inventory in remaining cable
Inside bottom seat 19, then enter in casing 8 through the through hole at the top of excess enthalpy cable bottom seat 19, then fixed through optical cable fixed seat 17, it is general
Thang-kng cable 18 removes steel-cored aluminium strand, and the fiber unit with stainless steel tube enters optical fiber direct-fusing disk 15.Second ground wire 21 and
Three ground wires 22 are connected by grounding switch 14 with grounding net of transformer substation, it is ensured that the reliability and transformer station OPGW of ground connection
When degree insulation control detection, grounding net of transformer substation resistance detection, it is only necessary to disconnect the grounding switch switch inside the remaining cable case of insulation
, it is completed, the grounding switch that closes switch, the testing time is saved, loss of outage has been reduced, is maintained easily, avoids stepping on bar
Operating risk.
Casing 8, OPGW disk cables frame 9 and be dielectrically separated from plate 13 for insulation SMC material or epoxy resin board, it is ensured that optical cable
Insulation effect.
Fixing device include equidistant arrangement the top of gate framework 20 tapered pole customization anchor ear 3, be located at gate framework
Herringbone bar of the U-shaped card tool 4 and equidistant arrangement of 20 middles in the bottom of gate framework 20 customizes anchor ear 5, tapered pole customization anchor ear 3
Include two semicircular anchor ears and mounting bracket with herringbone bar customization anchor ear 5, OPGW pressure limiting devices 1 and pin insulator 2 are equal
It is fixed on mounting bracket, is connected by two connecting bolts between two semicircle anchor ears.
Pressure limiting device 1 includes the high-voltage arc strike rod 23 and low-voltage arcing rod 25 that are parallel to each other, and high-voltage arc strike rod 23 is outer equidistant
It is arranged with multiple overcoat full skirts 24, the end of high-voltage arc strike rod 23 and low-voltage arcing rod 25 is equipped with ball discharge 27, high-voltage arc strike
One end of rod 23 is connected with the first ground wire 12, and OPGW optical cables 10 are fixed on the other end of high-voltage arc strike rod 23.
It is dielectrically separated from the back side of plate 13 and is additionally provided with wire carding plate 16, wire carding plate 16 is provided with multiple bunch grooves, and wire carding plate 16 passes through
Bolt is provided with removable cover.Wire carding plate 16 primarily serves the effect for arranging protection optical cable.
Grounding switch 14 includes plug-in strip and two joints, and two joint series connection, two joints are connected by plug-in strip and ground wire,
Second ground wire 21 is connected with one of joint, and the 3rd ground wire 22 is connected with another joint.Plug-in strip close ground wire with
Grounded screen is connected, and plug-in strip separately then disconnects with grounded screen.
Operation principle：OPGW optical cables 10 are arranged on pin insulator 2, be effectively ensured OPGW optical cables and gate framework 20 it
Between reliably insulate, OPGW pressure limiting devices 1 are to lightning induction electricity, induced electricity carries out pressure limiting electric discharge, OPGW pressure limiting devices 1 in transformer station
It is grounded by the first ground wire 12, OPGW optical cables 10 enter inside casing 8 from nylon insulation tube 7, afterwards into optical fiber direct-fusing disk
15 pass through grounding switch 14 and power transformation with the welding of ordinary optical cable 18 of transformer station's computer room, the second ground wire 21 and the 3rd ground wire 22
Grounded screen of standing is connected, it is ensured that the reliability of ground connection, while convenient maintenance.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (6)
1. remaining cable case, including leading-in device, OPGW optical cables under casing (8) and OPGW optical cables are landed in the enterprising cable insulation of a kind of transformer station
(10) casing (8) is entered from gate framework (20) top by leading-in device under OPGW optical cables, casing (8) is located at gate framework (20)
Bottom, it is characterised in that：Leading-in device includes OPGW pressure limiting devices (1) and fixing device, the OPGW pressure limitings under the optical cable
Device (1) is located at the top of gate framework (20), and pin insulator (2), the OPGW optical cables are provided with the fixing device
(10) on pin insulator (2) and pressure limiting device (1), the first ground wire (12) is connected with the pressure limiting device (1),
The other end of first ground wire (12) is connected with gate framework (20)；
Casing (8) top side is provided with into cable hole, is entered cable hole and is provided with nylon insulation tube (7), the nylon insulation tube (7)
Upper end is provided with waterproof end plug (6), near entering at cable hole to be provided with the first lock cable device (11) in the casing (8), first lock
The second ground wire (21) is connected with cable device (11), casing (8) bottom is provided with grounding switch (14), the grounding switch
(14) it is connected with grounding net of transformer substation by ground wire, second ground wire (21) is connected with grounding switch (14), the casing
(8) be provided with and be dielectrically separated from plate (13) in, the one side for being dielectrically separated from plate (13) is provided with OPGW disk cables frame (9), the insulation every
Cable-passing hole (26) is provided with from the side of plate (13), described plate (13) another side that is dielectrically separated from is provided with second near cable-passing hole (26) place
Lock cable device (28), is connected with the 3rd ground wire (22) on second lock cable device (28), the 3rd ground wire (22) with
Grounding switch (14) is connected, and described plate (13) back side that is dielectrically separated from is provided with optical fiber direct-fusing disk (15) and optical cable fixed seat (17), institute
State casing (8) bottom and be provided with hollow remaining cable bottom seat (19), the bottom and top of remaining cable bottom seat (19) are equipped with logical
Hole.
2. remaining cable case is landed in the enterprising cable insulation of a kind of transformer station according to claim 1, it is characterised in that：The fixed dress
Put including equidistant arrangement gate framework (20) top tapered pole customize anchor ear (3), be located at gate framework (20) middle
Herringbone bar in gate framework (20) bottom of U-shaped card tool (4) and equidistant arrangement customize anchor ear (5), tapered pole customization armful
Hoop (3) and herringbone bar customize anchor ear (5) including two semicircular anchor ears and mounting bracket, the OPGW pressure limiting devices (1) and
Pin insulator (2) is each attached on mounting bracket, is connected by two connecting bolts between two semicircle anchor ears.
3. remaining cable case is landed in the enterprising cable insulation of a kind of transformer station according to claim 1, it is characterised in that：The pressure limiting dress
Putting (1) includes the high-voltage arc strike rod (23) and low-voltage arcing rod (25) that are parallel to each other, the high-voltage arc strike rod (23) equidistant row outward
Show multiple overcoat full skirts (24), the end of the high-voltage arc strike rod (23) and low-voltage arcing rod (25) is equipped with ball discharge
(27), one end of the high-voltage arc strike rod (23) is connected with the first ground wire (12), and the OPGW optical cables (10) are fixed on high pressure
The other end of starting rod (23).
4. remaining cable case is landed in the enterprising cable insulation of a kind of transformer station according to claim 1, it is characterised in that：It is described insulation every
Wire carding plate (16) is additionally provided with from plate (13) back side, the wire carding plate (16) is provided with multiple bunch grooves, and the wire carding plate (16) is led to
Cross bolt and removable cover is installed.
5. remaining cable case is landed in the enterprising cable insulation of a kind of transformer station according to claim 1, it is characterised in that：The earthing
Lock (14) includes plug-in strip and two joints, and two joint series connection, two joints are connected by plug-in strip and ground wire, second ground connection
Line (21) is connected with one of joint, and the 3rd ground wire (22) is connected with another joint.
6. remaining cable case is landed in the enterprising cable insulation of a kind of transformer station according to claim 1, it is characterised in that：The casing
(8), OPGW disks cable frame (9) and be dielectrically separated from plate (13) be insulation SMC material or epoxy resin board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710071747.XA CN106842448B (en) | 2017-02-09 | 2017-02-09 | Insulating surplus cable case that falls to ground of cable that advances on transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710071747.XA CN106842448B (en) | 2017-02-09 | 2017-02-09 | Insulating surplus cable case that falls to ground of cable that advances on transformer substation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106842448A true CN106842448A (en) | 2017-06-13 |
| CN106842448B CN106842448B (en) | 2023-05-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710071747.XA Active CN106842448B (en) | 2017-02-09 | 2017-02-09 | Insulating surplus cable case that falls to ground of cable that advances on transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106842448B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429213A (en) * | 2018-05-20 | 2018-08-21 | 新能量科技股份有限公司 | A kind of primary steel band hoop bracket |
| CN108572423A (en) * | 2018-07-17 | 2018-09-25 | 国网山西省电力公司忻州供电公司 | Substation divides cable frame more than cable type OPGW |
| CN108693433A (en) * | 2018-05-20 | 2018-10-23 | 新能量科技股份有限公司 | A kind of ground-wire monitoring instrument |
| CN109245008A (en) * | 2018-11-26 | 2019-01-18 | 国网山东省电力公司信息通信公司 | OPGW optical cable draws lower device and construction technology at a kind of substation architecture |
| CN110589628A (en) * | 2018-06-13 | 2019-12-20 | 国网辽宁省电力有限公司营口供电公司 | Integrated device for storage, carrying and field detection of insulating rope |
| CN113824080A (en) * | 2021-09-23 | 2021-12-21 | 中电联电力发展研究院有限公司 | Device and method for releasing tensile stress of cable of transformer substation |
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| CN108572423A (en) * | 2018-07-17 | 2018-09-25 | 国网山西省电力公司忻州供电公司 | Substation divides cable frame more than cable type OPGW |
| CN109245008A (en) * | 2018-11-26 | 2019-01-18 | 国网山东省电力公司信息通信公司 | OPGW optical cable draws lower device and construction technology at a kind of substation architecture |
| CN113824080A (en) * | 2021-09-23 | 2021-12-21 | 中电联电力发展研究院有限公司 | Device and method for releasing tensile stress of cable of transformer substation |
| CN113824080B (en) * | 2021-09-23 | 2023-12-22 | 中电联电力发展研究院有限公司 | Device and method for releasing tensile stress of transformer substation cable |
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