CN209298858U - ± 1100KV DC line anchor support arrester device - Google Patents
± 1100KV DC line anchor support arrester device Download PDFInfo
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- CN209298858U CN209298858U CN201822133074.9U CN201822133074U CN209298858U CN 209298858 U CN209298858 U CN 209298858U CN 201822133074 U CN201822133074 U CN 201822133074U CN 209298858 U CN209298858 U CN 209298858U
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- arrester
- conducting wire
- anchor support
- wire
- cage
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
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- 238000009413 insulation Methods 0.000 description 4
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
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- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
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- 239000004411 aluminium Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
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- 238000010248 power generation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000012211 strain insulator Substances 0.000 description 1
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Abstract
The utility model provides one kind ± 1100KV DC line anchor support arrester device, it includes anchor support tower bodies, conducting wire cross-arm is fixed on anchor support tower body, conducting wire cross-arm is connect by wire jumper V string with conducting wire, the intersection of conducting wire and wire jumper V string is equipped with squirrel-cage and jumps pipe firmly, arrester device includes at least: choosing bracket, arrester, drainage thread outside；Bracket is chosen by extending obliquely upward from tension tower conducting wire cross-arm outside, and top is located at the surface that squirrel-cage jumps pipe firmly；The low-pressure end of arrester is chosen on bracket outside hanging on, and the high-voltage end connecting wire and squirrel-cage of arrester jump pipe firmly；The lower end of drainage thread is all connected to conducting wire, the high-voltage end of the upper end connection arrester of drainage thread.The utility model gapless arrestyer device can reduce DC line switching overvoltage level, reduction gap width and then reduction steel tower tower head size, greatly save line project investment.
Description
Technical field
The utility model relates to transmission line of electricity Suppressing Switching Overvoltage technical fields, and in particular to a kind of DC line strain insulator
Tower gapless arrestyer device.
Background technique
In recent years, extra-high voltage direct-current transmission technology is greatly developed in China Power Grids construction, and extra-high voltage direct-current is defeated
Electric line construction scale expands year by year, it has also become the important component of China Power Grids.But the power generation project in China is gradually western
It moves and moves northward, load center is predominantly located at eastern region, leads to the distance between the energy place of production and energy-consuming area increasingly
Greatly, route is by also increasing the case where high altitude localities.The switching overvoltage level of long range UHVDC Transmission Lines compared with
Height causes switching overvoltage gap width to increase (especially in high altitude localities), and insulated lengths increase, and then cause tower head size
And tower increases again, cost significantly improves.The higher place installation route gapless of switching overvoltage is lightning-arrest in the middle part of DC line
Device, the switching overvoltage that can effectively inhibit route are horizontal.Therefore, reliably gapless is reasonably installed and is kept away on DC line
Thunder device is as there is an urgent need to the research topics of development.
Leakage conductor has at home and abroad been mounted on the alternating current-direct current overhead transmission line road from distribution to 500kV in large quantities,
And development ± 800kV DC line arrester is started, but has predominantly limited the surge arrester with external series gaps of lightning surge.
Currently, achievable surge arrester with external series gaps scheme is as follows.
1) a kind of ± 800 kilovolts of DC line arrester mounting devices and method (CN201610184499)
The technical solution uses gap arrester, and mounting device includes insulator suspension yoke plate, connecting rod, insulation column and leads
Line conductor spacer.Insulator hangs yoke plate and is equipped with n mounting hole, and n >=3, it is mutually flat that two of them mounting hole is used for installation two
Capable insulator chain, another mounting hole is for installing connecting rod；The connecting rod is L-type hard connecting rod；Leakage conductor
Ontology one end is mounted on the base, and pedestal is installed to insulator chain by connecting rod and hangs yoke plate；Leakage conductor ontology one end
Insulation column is equipped between pedestal；The other end of leakage conductor ontology is high-voltage end, and high-voltage end is mounted on lead spacer
On.Leakage conductor ontology is parallel with the insulator chain being mounted on insulator suspension yoke plate.
The technical solution main function is the lightning surge level for limiting route, and arrester is using use and line insulation
Interest has the mode installed in series and parallel, does not need design connecting tool, only the aperture mounting fixing parts on former fitting series board.
2) a kind of electric transmission line lightning arrester device and installation method (CN201710324993)
The technical solution use gap arrester, mainly include lightning arrester body, high pressure termination electrode, low pressure termination electrode,
Gap adjusts component, insulator foot, counter, support insulator and angle bar frame.High pressure termination electrode and transmission pressure hanging yoke plate
Connection, low pressure termination electrode adjust component by gap and connect with lightning arrester body one end, and the lightning arrester body other end passes through insulation
Pedestal is connect with angle bar frame, and counter is fixed on angle bar frame, and angle bar frame is connect with shaft tower, and support insulator diagonal brace connects
It connects between lightning arrester body and angle bar frame.
The technical solution main function is the lightning surge level for limiting route, and arrester uses and is supported on steel tower pedestal
On mounting means, no drainage thread do not need to design novel connecting tool.
From the above mentioned, the arrester that the prior art is installed, be limit lightning surge surge arrester with external series gaps keep away
Thunder device, arrester are not directly linked with conducting wire, mount scheme be not suitable for DC power transmission line Suppressing Switching Overvoltage without
Gap arrester.And Suppressing Switching Overvoltage gapless arrestyer needs drainage thread and couples with line conductor, drainage thread will be kept away
Thunder device and conducting wire have been connected into an entirety, and the two is therefore interrelated, influences each other.And ± 1100kV DC line is with keeping away
Thunder device length is longer (about 4.1 times of 500kV leakage conductor), volume and weight also bigger (about 500kV leakage conductor
5.3 times), at present both at home and abroad installation and application be still blank.
Utility model content
The technical issues of the utility model is solved is to provide one kind ± 1100KV DC line arrester device.
Technological means used by the utility model is as described below.
± 1100KV DC line anchor support the arrester device of the utility model, it includes anchor support tower body, anchor supports
Conducting wire cross-arm is fixed on tower body, conducting wire cross-arm is connect by wire jumper V string with conducting wire, and conducting wire is equipped with the intersection gone here and there wire jumper V
Squirrel-cage jumps pipe firmly, which includes at least: choosing bracket, arrester, drainage thread outside；The outer bracket of choosing is by from tension tower conducting wire
Cross-arm extends obliquely upward, and top is located at the surface that squirrel-cage jumps pipe firmly；The low-pressure end of the arrester hangs on outer
It chooses on bracket, the high-voltage end connecting wire and squirrel-cage of arrester jump pipe firmly；The lower end of the drainage thread is all connected to conducting wire, draws
The high-voltage end of the upper end connection arrester of streamline.
The outer top for choosing bracket sets outer fixing end, and arrester is suspended in outer fixing end, outer fixing end to squirrel-cage
The hard vertical range for jumping pipe and the length of arrester match.
The arrester is divided into 7 sections from top to bottom, and every section length 2.8m uses flanged joint, lower part three between section and section
Section flange outer sleeve has the air gap distance of grading ring, flange and grading ring and anchor support tower body to meet wanting for safety clearance value
It asks.
The low-pressure end of the arrester is hung in outer fixing end by upper hinge fitting, and the upper hinge fitting is from upper
Successively include under: EB hanging plate, U-shaped ring extend ring, U-shaped ring, DB adjustment plate, PT adjustment plate, U-shaped ring, U-shaped ring.
The high-voltage end of the arrester is connected to squirrel-cage by underneath hinges fitting and jumps pipe and conducting wire, the underneath hinges firmly
Fitting successively includes from top to bottom: U-shaped ring, U-shaped ring, PT adjustment plate, DB adjustment plate, U-shaped ring, extends ring, U-shaped ring.
The underneath hinges fitting includes hood type jumper wire spacing rod, and hood type jumper wire spacing rod upper end is set with aperture
Extension plate, hood type jumper wire spacing rod upper end are connected to the U-shaped ring of underneath hinges fitting the lowermost by the aperture；Hood type is jumped
The foot that splits of line conductor spacer is connected to conducting wire.
The high-voltage end of the arrester connects two drainage threads, the drainage of the hydraulic shaped cable clamp of the SY by the hydraulic shaped cable clamp of SY
Plate inclination angle is 30 °.
The lower end of the drainage thread is connected on conducting wire by TL type wire clamp.
Technical effect caused by the utility model.
(1) the utility model demonstrates the feasibility that gapless arrestyer is installed in DC line anchor support, is AC line
Road installation gapless arrestyer provides example.
(2) it using surge arrester support is chosen outside, is set according to arrester length, V string projection string length and safety clearance value etc.
Stent size is chosen outside having counted.It is suitable that arrester lower end jumps pipe height with squirrel-cage firmly, and without increasing, wire jumper V string string is long and shaft tower is high
Degree.
(3) drainage thread pattern and connecting mode have been reasonably selected.Drainage thread lower end is crimped by hydraulic way with TL wire clamp,
TL cable clip bolt section is mounted on the upper layer sub-conductor between arrester and anchor support.Drainage thread upper end uses SY hydraulic equipment
Wire clamp couples with arrester high-voltage end (lower end).
(4) novel connecting hinge fitting design.Arrester lower end is coupled by hinge fitting with the hard wire jumper of squirrel-cage, is taken shelter from the thunder
By hinge fitting stress when device wind is put, it is effectively protected drainage thread.Meanwhile hinge fitting uses Special hoop formula wire jumper interval
Stick jumps pipe with squirrel-cage firmly and is connected, easy installation and reliable.
(5) for convenience of later period operation and maintenance, crane dismounting scheme, safe ready is can be used in the utility model.
Detailed description of the invention
Fig. 1 is the utility model anchor support arrester device overall structure diagram.
Fig. 2 is the arrester low-pressure end structural schematic diagram of the utility model anchor support arrester device.
Fig. 3 is the arrester high-voltage end structural schematic diagram of the utility model anchor support arrester device.
Fig. 4 is the arrester outline drawing of the utility model anchor support arrester device.
Fig. 5 is the top connecting tool structural schematic diagram of the utility model anchor support arrester device.
Fig. 6 is the lower part connecting tool structural schematic diagram of the utility model anchor support arrester device.
Fig. 7 is the hood type jumper wire spacing rod structural schematic diagram of the utility model anchor support arrester device.
Fig. 8-9 is the drainage thread coupling head fitting figure of the utility model anchor support arrester device.
Specific embodiment
Fig. 1 ~ 3 are please referred to, one kind ± 1100KV DC line anchor support arrester device of the utility model, it includes resistance to
Tower tower body is opened, conducting wire cross-arm is fixed on anchor support tower body, conducting wire cross-arm is connected to conducting wire by wire jumper V string 41 and strain insulator-string 42
The intersection of 4, conducting wire 4 and wire jumper V string 41 is equipped with squirrel-cage and jumps pipe 6 firmly, extends obliquely upward and goes out from tension tower conducting wire cross-arm
Bracket 1 is chosen, the top for choosing bracket 1 outside is located at the surface that squirrel-cage jumps pipe 6 firmly；The low-pressure end of arrester 3 passes through upper hinge
Fitting 2 is chosen on bracket 1 outside hanging on, and the high-voltage end of arrester 3 is jumped firmly by 5 connecting wire 4 of underneath hinges fitting and squirrel-cage
Pipe 6；The lower end of drainage thread 9 is all connected to conducting wire 4, the high-voltage end of the upper end connection arrester 3 of drainage thread 9.Pass through drainage as a result,
Line and connecting wire fetch the discharge current of release arrester, while being protection drainage thread, increase the connection of underneath hinges fitting and keep away
Thunder device and conducting wire.
Referring to Fig. 4, arrester 3 designed by the arrester device of the utility model is divided into 7 sections, merogenesis from top to bottom
Serial number is followed successively by Section 7 to Section 1, and every section length 2.8m is coupled between section and section using flange, and 3 section flange outer sleeve of lower part has
Uniform ring, arrester bottom end housing high pressure anticorona ring, arrester total length are 19.98m.
Arrester 3 hangs on the surface that squirrel-cage jumps pipe 6 firmly, and the projection of wire jumper V 41 to anchor support of string is about 13.7m,
Less than arrester away from length 19.66m between hanging point.Therefore, suspension arrester, which uses to hang on outside on tension tower conducting wire cross-arm, chooses branch
The mode of frame, 9.2m need to be improved from cross-arm bottom surface by choosing outer fixing end 11 on bracket 1 outside.Length difference on other directions can pass through
Hinge fitting length is adjusted, the distance for realizing outer fixing end 11 to conducting wire 4 is suitable with the length of arrester 3.
Electrification flange and grading ring will meet the requirement of safety clearance value at a distance from anchor support (earthing member), and merogenesis is lightning-arrest
The air gap value of device flange or grading ring and steel tower (earthing member) requires as follows: Section 7 and Section 6 are 1.3m, Section 6 and
Section 5 is 2.6m, and Section 5 and Section 4 are 3.9m, and Section 4 and Section 3 are 5.2m.When arrester wind-engaging and along line direction to
When steel tower side oscillation, underneath hinges fitting 5 can be tensed, and arrester flange will meet peace at a distance from steel tower (earthing member) after tension
Full gap width, so that it is determined that the length that the outer fixing end 11 for choosing bracket outside is stretched out from tower body is 6.6m.
Arrester 3 is chosen on bracket 1 outside hanging on, when jumping 6 surface of pipe firmly positioned at squirrel-cage, 3 low-pressure end of arrester (on
End) coupled with conducting wire using hinge fitting.Referring to Fig. 5,2 structure of upper hinge fitting designed by the utility model from up to
Under be sequentially EB hanging plate 21, U-shaped ring 22, extend ring 23, U-shaped ring 22, DB adjustment plate 24, PT adjustment plate 25, U-shaped ring 22, U-shaped ring
22.DB adjustment plate 24, more important is when dismounting arrester, provides idle extension in addition to playing adjustment effect for crane lifting
Hole.Wherein other fitting combinations also can be used in upper hinge fitting, need to only guarantee to realize outer bracket 1 of choosing to conducting wire 5
Distance is suitable with the length of arrester 3.
To protect drainage thread, hinge fitting used by coupling to arrester high-voltage end (lower end) with conducting wire is set
Meter.Referring to Fig. 6, the structure of underneath hinges fitting 5 is sequentially U-shaped ring 22, U-shaped ring 22, PT adjustment plate 25, DB tune from top to bottom
Whole plate 24, U-shaped ring 22 extend ring 23, U-shaped ring 22, hood type jumper wire spacing rod 8.Wherein it also can be used in underneath hinges fitting
It is suitable with the length of arrester 3 to the distance of conducting wire 5 need to only to guarantee that bracket 1 is chosen in realization outside for its fitting combination.
Pipe 6 is jumped with squirrel-cage using Special hoop formula jumper wire spacing rod 8 firmly and is coupled in the bottom of underneath hinges fitting 6.Such as
Shown in Fig. 7, Special hoop formula jumper wire spacing rod 8 is transformed on the basis of conventional hood type jumper wire spacing rod, increases one
Extension plate, aperture on plate, for being connect with U-shaped link.Meanwhile meter and arrester wind load, Special hoop formula jumper wire spacing rod 8
Single lug grip be not less than 2.5kN, single lug axis (cross) is to, oblique intensity not less than 2.5kN；Centripetal force and torsion grip square etc.
Other requirements are identical as conductor spacer FJGY-855/48DZ used in engineering.
Under normal conditions, the electric current for flowing through arrester drainage thread is 300-500A.Compared with steel-cored aluminium strand, it is proposed that use
Flexible preferable aluminum stranded conductor or copper wire.Aluminum stranded conductor and hot galvanizing material comparison match, are not likely to produce galvano-cautery, and the how easy oxygen of copper wire
Change corrosion, therefore the utility model uses JL-300 aluminum stranded conductor, current-carrying capacity 550A is met the requirements.
It is influenced to reduce corona, the utility model uses two drainage threads 9.As shown in Fig. 3, Fig. 6 and Fig. 8-9, drainage
9 lower end of line is crimped by hydraulic way with TL type wire clamp 91, and TL cable clip bolt section is mounted on eight between arrester 3 and anchor support
On the sub-conductor of split conductor upper layer.The upper end of drainage thread 9 is joined using the hydraulic shaped cable clamp 92 of SY with 3 high-voltage end of arrester (lower end)
It connects, the inclination angle of SY drainage plate is 30 °.The length of drainage thread 9, which is subject to, is slightly longer than underneath hinges fitting 5, i.e. holding drainage thread 9
Relaxation does not stress.
Claims (8)
1. one kind ± 1100KV DC line anchor support arrester device, fixed on anchor support tower body it includes anchor support tower body
There is conducting wire cross-arm, conducting wire cross-arm is connect by wire jumper V string (41) with conducting wire (4), the intersection of conducting wire (4) and wire jumper V string (41)
Jump pipe (6) firmly equipped with squirrel-cage, which is characterized in that include at least:
It chooses bracket (1) outside, described to choose bracket (1) by extending obliquely upward from tension tower conducting wire cross-arm outside, top is located at mouse
Cage jumps the surface of pipe (6) firmly；
Arrester (3), the low-pressure end of the arrester (3) is hung on to be chosen on bracket (1) outside, the high-voltage end connection of arrester (3)
Conducting wire (4) and squirrel-cage jump pipe (6) firmly；
The lower end of drainage thread (9), the drainage thread (9) is all connected to conducting wire (4), and the upper end of drainage thread (9) connects arrester (3)
High-voltage end.
2. ± 1100KV DC line anchor support arrester device as described in claim 1, which is characterized in that choose branch outside described
The top of frame (1) is set outer fixing end (11), and arrester (3) is suspended on outer fixing end (11), and outer fixing end (11) arrives squirrel-cage
The hard vertical range for jumping pipe (6) and the length of arrester (3) match.
3. ± 1100KV DC line anchor support arrester device as claimed in claim 2, which is characterized in that the arrester
(3) it is divided into 7 sections from top to bottom, every section length 2.8m uses flanged joint between section and section, three section flange outer sleeve of lower part, which has, presses
The air gap distance of ring, flange and grading ring and anchor support tower body meets the requirement of safety clearance value.
4. ± 1100KV DC line anchor support arrester device as claimed in claim 2, which is characterized in that the arrester
(3) low-pressure end is hung on outer fixing end (11) by upper hinge fitting (2), and the upper hinge fitting (2) is from top to bottom
Successively include: EB hanging plate (21), U-shaped ring (22) extend ring (23), U-shaped ring (22), DB adjustment plate (24), PT adjustment plate (25),
U-shaped ring (22), U-shaped ring (22).
5. ± 1100KV DC line anchor support arrester device as described in claim 1, which is characterized in that the arrester
(3) high-voltage end is connected to squirrel-cage by underneath hinges fitting (5) and jumps pipe (6) and conducting wire (4) firmly, the underneath hinges fitting
(5) successively include from top to bottom: U-shaped ring (22), U-shaped ring (22), PT adjustment plate (25), DB adjustment plate (24), U-shaped ring (22),
Extend ring (23), U-shaped ring (22).
6. ± 1100KV DC line anchor support arrester device as claimed in claim 5, which is characterized in that the lower part hinge
Chain fitting (5) includes hood type jumper wire spacing rod (8), and hood type jumper wire spacing rod (8) upper end sets the extension plate with aperture, is embraced
Hoop formula jumper wire spacing rod (8) upper end is connected to the U-shaped ring of underneath hinges fitting (5) the lowermost (22) by the extension plate aperture；
The foot that splits of hood type jumper wire spacing rod (8) is connected to conducting wire (4).
7. ± 1100KV DC line anchor support arrester device as described in claim 1, which is characterized in that the arrester
(3) high-voltage end connects two drainage threads (9) by the hydraulic shaped cable clamp of SY (92), and the drainage plate of the hydraulic shaped cable clamp of the SY (92) inclines
Oblique angle is 30 °.
8. ± 1100KV DC line anchor support arrester device as described in claim 1, which is characterized in that the drainage thread
(9) lower end is connected on conducting wire (4) by TL type wire clamp (91).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018216888223 | 2018-10-17 | ||
| CN201821688822 | 2018-10-17 |
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| Publication Number | Publication Date |
|---|---|
| CN209298858U true CN209298858U (en) | 2019-08-23 |
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| CN201822133074.9U Active CN209298858U (en) | 2018-10-17 | 2018-12-19 | ± 1100KV DC line anchor support arrester device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449867A (en) * | 2018-10-17 | 2019-03-08 | 国家电网有限公司 | ± 1100KV DC line anchor support arrester device and assembly and disassembly methods |
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2018
- 2018-12-19 CN CN201822133074.9U patent/CN209298858U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449867A (en) * | 2018-10-17 | 2019-03-08 | 国家电网有限公司 | ± 1100KV DC line anchor support arrester device and assembly and disassembly methods |
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