CN202474755U - 720/50 conducting wire jumper wire structure of extra-high voltage DC line - Google Patents
720/50 conducting wire jumper wire structure of extra-high voltage DC line Download PDFInfo
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- CN202474755U CN202474755U CN 201120510368 CN201120510368U CN202474755U CN 202474755 U CN202474755 U CN 202474755U CN 201120510368 CN201120510368 CN 201120510368 CN 201120510368 U CN201120510368 U CN 201120510368U CN 202474755 U CN202474755 U CN 202474755U
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Abstract
The utility model discloses a 720/50 conducting wire jumper wire structure of an extra-high voltage DC line. The jumper wire structure employs double V series aluminum tube type hard jumper wires, namely two aluminum tubes are arranged in the middle segments of third gears of around jump wires respectively; the aluminum tubes are connected on an iron tower via a double V-shaped jumper wire insulator chain, and a supporting frame is equipped with a counterweight piece. The 720/50 conducting wire jumper wire structure of the extra-high voltage DC line of the utility model is simple in processing and convenient in construction; a conducting wire and the aluminum tubes are electrically connected via a segment of short twisted wire, being suitable for various strain insulator-string length and line rotation angle changes; the shape of a whole set of jumper wires is fixed completely, so that the forming effect is good, and the environment is beautiful. Because the aluminum tube jumper wires are equipped with counterweights, the weight of the jumper wires and the vertical component of a jumper wire system are increased, the overall structure stability and the windproof partial flashover performance are good, and the electrical reliability is high. When the 720/50 conducting wire jumper wire structure of the extra-high voltage DC line is applied, the iron tower width and the tower head height are shortened substantially, and the project cost is reduced.
Description
Technical field
The utility model relates to UHV transmission line strain tower wire jumper field, especially relates to a kind of ± 800kV extra-high voltage direct-current circuit 720/50 lead jumper wire construction.
Background technology
Because the developable hydroelectric resources of China and coal resources major part be in central and west regions, but the power load of China 2/3 but be distributed in the east coastal with the developed area of Beijing-Guangzhou Railway to the east of along the line.Like this, just need be delivered to the big area, the central and east of electricity needs to the electric weight of energy base generating.In order to reduce transmission losses, improve the transmission of electricity quality, China begins to develop the UHV transmission technology at present.The extra-high voltage direct-current transmission engineering is meant ± DC transmission engineering of 800kV and above electric pressure to have characteristics such as remote, big capacity, low-loss and economy.
The wire spacing of strain tower is mainly by lead determining near distance and the gap of wire jumper to the iron tower member in span central authorities in the transmission line.For UHV transmission line, because distance increases between wire jumper, cause that the wire jumper sag increases, after the wire jumper windage yaw gap of iron tower member often determined the wire spacing of shaft tower, and the economic index of shaft tower in final decision.Therefore, confirm the strain tower jumper wire construction of Technological Economy, safe and reliable, easy construction, can effectively reduce the size of strain tower, reduce project cost, guarantee the safe operation of circuit.
Reducing wire jumper sag and windage yaw deviant thereof is to dwindle the effective ways of strain tower size.And wire jumper sag and skew depend mainly on the wire jumper of employing or the fixing mode of wire jumper; Once did excessive quantity research experiment work both at home and abroad; Taked multiple strain tower drainage way; From horizontal wire jumper to arc wire jumper, from the flexible jumper to the rigid jumper, from general strain tower wire jumper to three post strain tower wire jumpers etc., and use maximum be flexible jumper and rigid jumpers.
Because the extra high voltage line strain insulator string is longer, adopt flexible jumper drainage distance long, the wire jumper sag is bigger, therefore needs lengthening iron tower cross-arm to satisfy after the wire jumper windage yaw gap to the iron tower member.Advantages such as rigid jumper is compared with flexible jumper, on the flexible jumper basis, increases a stay pipe, and stay pipe is connected on strain insulator string or the iron tower through pull bar or wire jumper insulator string, and it is little to have a wire jumper sag, and the strain tower cross-arm is short.
According to the difference of strain tower structure and occupation mode, hard wire jumper has two kinds of hard jumper wire constructions: the hard wire jumper of band brace, the hard wire jumper of band wire jumper string.
The hard wire jumper of band brace is applicable to angle tower interior angle side; Whole bridle wire apparatus does not add the wire jumper insulator string; Considering that steel pipe sinks to causing the wire jumper lead deformation installs an adjustable brace additional at steel pipe two ends place, during design it is made the cat ladder shape; Its effect one is to draw to put forward whole rigid jumper system, and the rigid jumper system is not sunk; The 2nd, can for the maintainer from doing ladder usefulness during to the maintenance of the hard wire jumper of squirrel-cage under the strain insulator-string, brace is anticorona design, is to play an energy-conserving action, brace top is furnished with the monolithic insulator.Observe molding effect, the minimum discharging gap of the hard bridle wire apparatus of squirrel-cage after the installation.
The whole bridle wire apparatus of the band hard wire jumper of wire jumper string adds two string wire jumper insulator strings, distance 8～10m between two wire jumper strings, and the connection gold utensil of wire jumper string and steel pipe is deep among the wire jumper, does not need to consider the corona problem again.750kV and 1000kV alternating current circuit were adopted two I string hangs mostly in the past.
The utility model content
In order to shorten the economic index of extra high voltage line strain tower cross-arm, minimizing wire jumper sag and windage yaw deviant thereof, reduction extra high voltage line shaft tower; The utility model provides a kind of extra-high voltage direct-current circuit 720/50 lead jumper wire construction; Said jumper wire construction adopts two V string aluminum-tube rigid jumper; This pair V string aluminum-tube rigid jumper is meant that third gear is provided with two aluminum pipes respectively around jumping the stage casing, and aluminum pipe is connected on the iron tower through double V-shaped wire jumper insulator string.
Support frame as described above is provided with the weight sheet.
The V-type string angle of said pair of V string aluminum-tube rigid jumper kind is got 70～90 °.
The aluminum pipe length range is 12m～16m in the said pair of V string aluminum-tube rigid jumper.
Aluminum pipe is selected the hot extrusion molding aluminium-alloy pipe for use in the said couple of V string aluminum-tube rigid jumper, and the aluminium purity that the drainage plate parts of the coupling part of aluminum pipe two ends and flexible jumper are selected for use is not less than 99.5% hot extrude pressing plate or aluminium purity and is not less than 99.5% hot extrude pressing plate.
Two V string aluminum-tube rigid jumper of the utility model adopt this pattern wire jumper, can limit the swing of rigid jumper; Dwindle the tower head size, reduce the economic index of shaft tower, simultaneously; Adopt two V string hangs; Can be better fixing rigid jumper, single from the electrical safety reliability, also be the most safe and reliable a kind of wire jumper mode in the various wire jumper modes.Aluminum-tube rigid jumper is simple for structure, and installation and transportation are convenient, construction technology easy master and control, and finished product is attractive in appearance.Be applicable to lead adopt six division ACSR-720/50 shaped steel core aluminum stranded wires ± ice formation strain tower wire jumper during 800kV extra-high voltage direct-current circuit is light.
Said pair of V string aluminum-tube rigid jumper; Be that one section common flexible jumper of wire jumper downside (third gear is around jumping the stage casing) is substituted with two aluminum pipes; Aluminum pipe is connected on the iron tower through double V-shaped wire jumper insulator string, and aluminum pipe is water conservancy diversion but also play a supportive role not only, has increased the wire jumper rigidity, has reduced the wire jumper sag.Can increase the weight of hammer leaf on demand on the bracing frame.
The design of two V string aluminum-tube rigid jumper comprises following five aspects:
1. wire jumper V string angle chooses
Adopt two V strings, can be better fixing rigid jumper, safest beyond doubt for the electric reliability of engineering, according to structural configuration and gap analysis, V-type string angle is got 70～90 °.
2. hard wire jumper aluminum pipe length range is chosen and counterweight
According to applied strain tower size and strain insulator string length in the engineering; Calculate the strain insulator-string inclination angle under the different terrain conditions, so the flexible jumper that calculate to connect aluminum pipe and strain insulator-string under the windage yaw situation to the minimum range of the firm cap of insulator, iron tower cross-arm lower edge and body of the tower.Adjustment aluminum pipe length makes wire jumper satisfy the desired electric clearance value of engineering to the minimum range of the firm cap of insulator, iron tower cross-arm lower edge and body of the tower.Promptly determine needed hard wire jumper aluminum pipe length range in the engineering.
Through calculating, the pairing wire jumper aluminum pipe of each strain tower tower length range is 12m～16m.
According to the angle of wind deflection required value, consider wire jumper coefficient of wind pres 1.2, hard wire jumper total weight (not containing lead, insulator) need reach 1000～1500kg, can satisfy the requirement of angle of wind deflection.
3. electric and mechanical technique requirement
Two V string aluminum-tube rigid jumper should have good electric property, satisfy the water conservancy diversion requirement, and its electric connecting part can not reduce the conductive capability of wire jumper.Through the continuous rating ampacity of gold utensil, under the temperature that allows, be not less than the load current value in loop.
Wire jumper should be able to stand the various mechanical load that installation, maintenance and when operation produce, and can stand the test of various situation such as operating current (comprising short circuit current) operating temperature and ambient environmental conditions.
The horizontal segment of wire jumper has enough hitch points, and is equipped with the wire jumper insulator string.
4. structural shape
Two V string aluminum-tube rigid jumper adopt the suspension of wire jumper insulator strings, and cat ladder is not installed, the pattern that the connection of shaft tower both sides strain insulator-string adopts flexible conductor to be connected with aluminum pipe, at the interlude use aluminum pipe of wire jumper as baffle.
Flexible conductor conductor spacer, the aluminum pipe conductor spacer of rigid jumper are rigidity, should guarantee under the circuit running status, (to comprise short-circuit conditions) and keep the electric clearance of stipulating between conductor not change.
5. material and technology
The regulation that aluminum pipe formula rigid jumper is pressed GB/T 4437-2000 with aluminum pipe is selected the hot extrusion molding aluminium-alloy pipe for use.
Conductor spacer between aluminum pipe is pressed the regulation of GB/T 1173, selects for use Birmasil with the gravity foundry technology manufacturing.Aluminum pipe formula wire jumper flexible cord part conductor spacer adopts not isometrical conductor spacer to carry out transition.
The aluminium purity that the drainage plate parts of the coupling part of aluminum pipe two ends and flexible jumper are selected for use by GB/T 3190-1996 is not less than 99.5% hot extrude pressing plate or is not less than 99.5% hot extrude pressing plate by GB/T 3193-1997 aluminium purity.
In order to satisfy the requirement of extra high voltage direct current transmission line, compared with prior art, simple, the easy construction of the utility model processing.Aluminum pipe part can be in factory process and assembling in advance, only need install during on-the-spot the installation behind aluminum pipe and the conductor spacer to be connected with the termination wire jumper to get final product.Accelerate the installation rate of wire jumper, alleviated workman's work high above the ground labour intensity.Twisted wire with one section weak point between lead and aluminum pipe is electrically connected, applicable to the length of various strain insulator-strings and the variation of circuit corner.A whole set of wire jumper shape is completely fixed, and forming effect is good, has beautified environment.Owing to after the aluminum pipe wire jumper counterweight, increased the weight of the weight of wire jumper, increased the weight of the vertical component of wire jumper system, the overall structure good stability.Anti-windage yaw flashover can be good, and electric reliability is high, during application, has shortened iron tower width and tower head height greatly, has reduced project cost.
Description of drawings
Fig. 1 is the two V string of a utility model aluminum-tube rigid jumper assembly drawing.
Fig. 2 is a wire jumper insulator string structural representation in the utility model.
Fig. 3 is a weight positional structure sketch map in the utility model.
Wherein: 1 is the drainage wire clamp; 2 is three changes, one wire clamps; 3 for all pressing shading ring; 4 for supporting conductor spacer; 5 are the suspention conductor spacer; 6 is weight; 7 are the pipe mother; 8 is insulator; 9 is the hanging point gold utensil; 10 is U type link; 11 are the adjustment plate; 12 for prolonging ring; 13 for prolonging pull bar; 14 is yoke plate; 15 is link plate; 16 are the female nipple of pipe; 17 is the joint-type conductor spacer; 18 is six division jumper wire spacing rods; 19 are the adjustment plate; 20 are the adjustment plate; 21 is space-adjusting wire clamp; 22 is the wire jumper insulator string; 23 is strain insulator string; 24 is flexible jumper.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
For above-mentioned purpose, the feature and advantage that make the utility model can be more obviously understandable, the utility model is done further detailed explanation below in conjunction with accompanying drawing and embodiment.
The two V string of the utility model aluminum-tube rigid jumper mainly is made up of flexible conductor part, aluminum pipe, 160kN synthetic insulator V-type wire jumper string three parts.Flexible conductor one side links to each other with strain clamp; Opposite side becomes a wire clamp (gold utensil part 2) through drainage wire clamp (gold utensil part 1) and three and links to each other with aluminum pipe; The aluminum pipe two ends are installed and all to be pressed shading ring (gold utensil part 3), and aluminum pipe is connected on the iron tower through the wire jumper insulator string, are connected through suspending conductor spacer (gold utensil part 5) in midair between aluminum pipe and the wire jumper insulator string; Install between two aluminum pipes and support conductor spacer (gold utensil part 4); Conductor spacer on the aluminum pipe all can be installed weight, but must install by the assigned address in the diagram, is configured as the case may be during installation.Spacing is 8 meters between every group of wire jumper two V-type wire jumper strings, and long 12 meters of V-type wire jumper string list limb, angle are got 90 degree.Every side flexible jumper is all installed 4 six division jumper wire spacing rods (gold utensil part 18); Wherein two jumper wire spacing rod installation sites of lead side and aluminum pipe end are seen among Fig. 2 and are marked; Middle two jumper wire spacing rods are installed with flexible jumper length equidistance. when the distance of flexible jumper and shading ring FJP-800T (the gold utensil part 3) time less than 120mm, and installation space-adjusting wire clamp TXJ-720-100 (gold utensil part 21) between shading ring and flexible jumper.The aluminum pipe two ends connect gold utensil and all are welded with aluminium sheet, and have the connecting plate in a plurality of adjustment hole.Bolted side connecting conductor formula should guarantee the reliable connection request of long-time running, takes measures to satisfy the corona requirement.The drainage gold utensil that flexible jumper is connected with aluminum pipe has the composition surface of double-plate (opening).Aluminum pipe terminal part one becomes three wire clamps and adopts the welding pattern.Six conductors is equally spaced, heading spacing 450mm.
In the application process, the two V string of the utility model aluminum-tube rigid jumper is calculated and is mainly comprised confirming of aluminum pipe length and confirming of flexible jumper part lead line length.
The inclination angle of strain insulator string before and after at first calculating according to the hitch point discrepancy in elevation of front and back side wire tension, strain tower and the adjacent iron tower of every basic strain tower and span;
Secondly, determine the tower head coordinate system according to the length and the inclination angle of the circuit corner number of degrees, iron tower size and strain insulator string;
At last, the flexible jumper that combines corresponding computing formula to calculate to connect aluminum pipe and strain insulator-string according to wire jumper system parameters and tower head coordinate system under the windage yaw situation to the minimum range of the firm cap of insulator, iron tower cross-arm lower edge and body of the tower.Adjustment aluminum pipe length makes wire jumper satisfy the desired electric clearance value of engineering to the minimum range of the firm cap of insulator, iron tower cross-arm lower edge and body of the tower, promptly determines needed hard wire jumper aluminum pipe length and flexible jumper part lead line length in the engineering.
More than a kind of ± 800kV extra-high voltage direct-current circuit 720/50 lead jumper wire construction that the utility model provided has been carried out detailed introduction; Used concrete example among this paper the principle and the execution mode of the utility model are set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of the utility model; Simultaneously, for one of ordinary skill in the art, according to the thought of the utility model, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.
Claims (5)
1. extra-high voltage direct-current circuit 720/50 lead jumper wire construction; It is characterized in that: said jumper wire construction adopts two V string aluminum-tube rigid jumper; This pair V string aluminum-tube rigid jumper is meant that third gear is provided with two aluminum pipes respectively around jumping the stage casing, and aluminum pipe is connected on the iron tower through double V-shaped wire jumper insulator string.
2. extra-high voltage direct-current circuit 720/50 lead jumper wire construction according to claim 1, it is characterized in that: bracing frame is provided with the weight sheet.
3. extra-high voltage direct-current circuit 720/50 lead jumper wire construction according to claim 1, it is characterized in that: the V-type string angle of said pair of V string aluminum-tube rigid jumper kind is got 70～90 °.
4. extra-high voltage direct-current circuit 720/50 lead jumper wire construction according to claim 1, it is characterized in that: the aluminum pipe length range is 12m～16m in the said pair of V string aluminum-tube rigid jumper.
5. extra-high voltage direct-current circuit 720/50 lead jumper wire construction according to claim 1; It is characterized in that: aluminum pipe is selected the hot extrusion molding aluminium-alloy pipe for use in the said couple of V string aluminum-tube rigid jumper, and the aluminium purity that the drainage plate parts of the coupling part of aluminum pipe two ends and flexible jumper are selected for use is not less than 99.5% hot extrude pressing plate or aluminium purity and is not less than 99.5% hot extrude pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120510368 CN202474755U (en) | 2011-12-08 | 2011-12-08 | 720/50 conducting wire jumper wire structure of extra-high voltage DC line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120510368 CN202474755U (en) | 2011-12-08 | 2011-12-08 | 720/50 conducting wire jumper wire structure of extra-high voltage DC line |
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| Publication Number | Publication Date |
|---|---|
| CN202474755U true CN202474755U (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120510368 Expired - Lifetime CN202474755U (en) | 2011-12-08 | 2011-12-08 | 720/50 conducting wire jumper wire structure of extra-high voltage DC line |
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| CN (1) | CN202474755U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311865A (en) * | 2013-05-23 | 2013-09-18 | 国家电网公司 | Rack-type adjusting elbow |
| CN103311863A (en) * | 2013-05-23 | 2013-09-18 | 国家电网公司 | Bolt type adjusting elbow |
| CN104505788A (en) * | 2015-01-04 | 2015-04-08 | 湖北兴和电力新材料股份有限公司 | Large-span suspension type tubular bus-bar multiple-hanging-point combined metal fitting and mounting method thereof |
| CN112448350A (en) * | 2020-11-24 | 2021-03-05 | 国网河南省电力公司经济技术研究院 | Drilling and crossing tower capable of preventing wire jumping and wind deflection |
-
2011
- 2011-12-08 CN CN 201120510368 patent/CN202474755U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311865A (en) * | 2013-05-23 | 2013-09-18 | 国家电网公司 | Rack-type adjusting elbow |
| CN103311863A (en) * | 2013-05-23 | 2013-09-18 | 国家电网公司 | Bolt type adjusting elbow |
| CN103311865B (en) * | 2013-05-23 | 2016-08-10 | 国家电网公司 | A kind of rack type regulation elbow |
| CN103311863B (en) * | 2013-05-23 | 2016-12-28 | 国家电网公司 | A kind of bolt type adjusting elbow |
| CN104505788A (en) * | 2015-01-04 | 2015-04-08 | 湖北兴和电力新材料股份有限公司 | Large-span suspension type tubular bus-bar multiple-hanging-point combined metal fitting and mounting method thereof |
| CN112448350A (en) * | 2020-11-24 | 2021-03-05 | 国网河南省电力公司经济技术研究院 | Drilling and crossing tower capable of preventing wire jumping and wind deflection |
| CN112448350B (en) * | 2020-11-24 | 2023-02-03 | 国网河南省电力公司经济技术研究院 | Drilling and crossing tower capable of preventing wire jumping and wind deflection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER ENGINEERING CONSULTING GROUP CO., LTD. Free format text: FORMER NAME: CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100120 Beijing city Xicheng District No. 65 Andrew Patentee after: CHINA POWER ENGINEERING CONSULTING (GROUP) CORPORATION Patentee after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP Patentee after: Co., Ltd of Northeastern Electric Power Design Institute, China Power Engineering Consulting Group Corporation Patentee after: Co., Ltd of Huabei Power Design Inst., China Power Engineering Consulting Group Patentee after: Co., Ltd of Central Southern China Electric Power Design Institute, China Power Engineering Consulting Group Corporation Patentee after: China Power Engineering Consulting Group Southwest Electric Power Design Institute Co., Ltd. Patentee after: NORTH CHINA POWER ENGINEERING CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP Patentee after: Jiangsu Electric Power Designing Institute Patentee after: Anhui Electric Power Design Institute Address before: 100120 Beijing city Xicheng District No. 65 Andrew Patentee before: China Power Engineering Consulting Group Corporation Patentee before: Northwest Electric Power Design Institute, China Power Engineering Consulting Group Corporation Patentee before: Northeastern Electric Power Design Institute, China Power Engineering Consulting Group Corporation Patentee before: Huabei Power Design Inst., China Power Engineering Consulting Group Patentee before: Central Southern China Electric Power Design Institute, China Power Engineering Consulting Group Cor Patentee before: Southwest Electric Power Design Institute of China Power Engineering Consulting Group Corporation Patentee before: North China Electric Power Design Institute of China Power Engineering Consulting Group Corporation Patentee before: Jiangsu Electric Power Designing Institute Patentee before: Anhui Electric Power Design Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
|
| CX01 | Expiry of patent term |