CN110752570B - Inlet wire structure of 500kV transformer substation with extremely small inlet wire span - Google Patents
Inlet wire structure of 500kV transformer substation with extremely small inlet wire span Download PDFInfo
- Publication number
- CN110752570B CN110752570B CN201911047230.2A CN201911047230A CN110752570B CN 110752570 B CN110752570 B CN 110752570B CN 201911047230 A CN201911047230 A CN 201911047230A CN 110752570 B CN110752570 B CN 110752570B
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- CN
- China
- Prior art keywords
- wire
- steel pipe
- transformer substation
- portal frame
- split
- Prior art date
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- 125000006850 spacer group Chemical group 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 28
- 239000008397 galvanized steel Substances 0.000 claims description 28
- 239000012211 strain insulator Substances 0.000 claims description 19
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 3
- 239000011701 zinc Substances 0.000 claims 3
- 229910052725 zinc Inorganic materials 0.000 claims 3
- 239000004020 conductor Substances 0.000 claims 2
- 239000012212 insulator Substances 0.000 abstract description 6
- 230000007704 transition Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/20—Spatial arrangements or dispositions of lines or cables on poles, posts or towers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/12—Devices for maintaining distance between parallel conductors, e.g. spacer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/14—Arrangements or devices for damping mechanical oscillations of lines, e.g. for reducing production of sound
Landscapes
- Electric Cable Installation (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention discloses a wire inlet structure of a 500kV transformer substation with an extremely small wire inlet span, and solves the wire inlet problem of the 500kV transformer substation with the extremely small wire inlet span. The method is characterized in that a wire in a traditional wire-inlet rail structure of a tension string-wire-tension string is omitted, the tail parts of tension insulator strings at two sides are directly connected, a rigid cage structure transition wire is added below the tail parts of the connected tension insulator strings, the wire is directly connected to the rigid cage structure transition wire through a tension clamp drainage tube at the large side of a terminal tower, the wire is directly connected to equipment below a portal frame of a transformer substation through the rigid cage structure, the rigid cage structure is of a steel pipe and four-split hoop type spacer rod structure, a heavy hammer is added in the middle of the hoop type spacer rod, and a universal switching support plate is added at an outlet of the rigid cage structure so as to reduce torsion born by the steel pipe and prevent the steel pipe from twisting. Meets the requirement of electric clearance and has the characteristic of good stability.
Description
Technical Field
The invention relates to a wire inlet structure of a transformer substation, in particular to a wire inlet structure of a 500kV transformer substation with a very small wire inlet span.
Background
Along with the large-scale construction of power engineering, the construction land of super (special) high-voltage engineering is more and more intense, the society pays attention to environmental protection, the protection of basic farmland is made to become more and more difficult, the occupation area of the transformer substation is also more and more harsh, the space reserved for a transmission line terminal tower outside the site is also more and more narrow, the extra small-span wire-inlet gear is often generated outside a 500kV transformer substation, the design and construction of the wire-inlet gear of the transformer substation are caused to meet the difficulty of insufficient occupation, even the length of the wire-inlet gear is smaller than the length of a strain insulator string distributed on two sides, the wire-inlet structure of the transformer substation cannot be designed according to the conventional type of 'strain string-wire-strain string', and how to solve the wire-inlet of the 500kV transformer substation becomes a problem to be solved on site.
Disclosure of Invention
The invention provides a wire inlet structure of a 500kV transformer substation with an extremely small wire inlet span, which solves the wire inlet problem of the 500kV transformer substation with the extremely small wire inlet span.
The invention solves the technical problems by the following technical proposal:
The general conception of the invention is that: the method is characterized in that the traditional 'wires' in the wire-feeding structure of 'tension string-wires-tension string' are omitted, the tail parts of the tension insulator strings at two sides are directly connected, a rigid cage structure transition wire is added below the tail parts of the connected tension insulator strings, the wires are directly connected to the rigid cage structure transition wire through a tension clamp drainage tube at the large side of a terminal tower, the wires are directly connected to equipment below a portal frame of a transformer substation through the rigid cage structure, the rigid cage structure adopts a steel pipe and four-split hoop type spacer rod structure, a heavy hammer sheet is added in the middle of the hoop type spacer rod, the rigid cage structure transition wire is prevented from swinging in the vertical line direction under the condition of heavy wind, and a universal switching support plate is added at an outlet of the rigid cage structure due to the existence angle of the wire outlet direction at one side of the rigid cage structure, so that the torsion born by the steel pipe is reduced, and the torsion of the steel pipe is prevented.
The utility model provides a 500kV transformer substation's inlet wire structure of very little inlet wire span, including terminal tower and 500kV transformer substation inlet wire portal frame, be provided with the strain clamp drainage tube of terminal tower large side on the terminal tower, be provided with transformer substation portal frame below and introduce electrical equipment in 500kV transformer substation inlet wire portal frame, be provided with the portal frame strain insulator chain on 500kV transformer substation inlet wire portal frame, be provided with terminal tower strain insulator chain on the terminal tower, be connected with the triangle link fitting between the tail end of portal frame strain insulator chain and the tail end of terminal tower strain insulator chain, portal frame strain insulator chain and terminal tower strain insulator chain are in "V" font arrangement, the hoist has galvanized steel pipe staple bolt on the triangle link fitting, be provided with middle part galvanized steel pipe in the galvanized steel pipe staple bolt, the left end of middle part galvanized steel pipe is connected with left side universal adapter, the other end of the left universal adapter is connected with a left galvanized steel pipe, the right end of the middle galvanized steel pipe is connected with a right universal adapter, the other end of the right universal adapter is connected with a right galvanized steel pipe, a left hoop type four-split spacer rod is arranged on the left galvanized steel pipe, a middle hoop type four-split spacer rod is arranged on the middle galvanized steel pipe, a right hoop type four-split spacer rod is arranged on the right galvanized steel pipe, four-split wires are arranged on the left hoop type four-split spacer rod, the middle hoop type four-split spacer rod and the right hoop type four-split spacer rod, the left end of the four-split wires are connected with a transformer substation portal frame drainage tube, and the right end of the four-split wires is connected with a strain clamp drainage tube on the large side of a terminal tower.
The middle galvanized steel pipe is provided with middle hoop type four-split spacing bars at intervals, and a heavy hammer is arranged between the middle hoop type four-split spacing bars at intervals.
The invention realizes the smooth wire entering of the wire inlet rail of the 500 KV transformer substation under the condition of extremely small span, the rigid cage type jumper wire under the two insulator strings arranged in a V shape is hard in the soft state, and the rigid cage type jumper wire is soft in the hard state, namely the natural bending characteristic of the wire is utilized, and the advantages of high flexibility of the hoop type spacer rod and strong wind deflection resistance of the heavy hammer are combined, the universal adapter joint added at the two ends of the steel pipe realizes the steering in the three-dimensional space, and the problems of wire bending and twisting of the rigid cage type structure are avoided; various hardware fittings make up for the advantages and complement each other, are skillfully combined together, realize that the extra-small incoming wire is in a stop, meet the requirement of electric clearance, and have the characteristics of good stability, strong adaptability, simple processing and convenient and attractive installation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic structural view of the connection of two insulator strings to a rigid cage structure of the present invention.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
The utility model provides a wire inlet structure of 500kV transformer substation with extremely small wire inlet span, which comprises a terminal tower 1 and a 500kV transformer substation wire inlet portal frame 2, a strain clamp drainage tube 3 on the large side of the terminal tower is arranged on the terminal tower 1, an electrical device 4 is introduced under the transformer substation portal frame 2, a portal frame strain insulator chain 5 is arranged on the 500kV transformer substation wire inlet portal frame 2, a terminal tower strain insulator chain 6 is arranged on the terminal tower 1, a triangular plate connecting fitting 7 is connected between the tail end of the portal frame strain insulator chain 5 and the tail end of the terminal tower strain insulator chain 6, the portal frame strain insulator chain 5 and the terminal tower strain insulator chain 6 are arranged in a V shape, a galvanized steel pipe hoop 8 is connected on the triangular plate connecting fitting 7, a middle galvanized steel pipe 9 is arranged in the galvanized steel pipe hoop 8, the left end of the middle galvanized steel pipe 9 is connected with a left universal adapter 10, the other end of the left universal adapter 10 is connected with a left galvanized steel pipe 11, the right end of the middle galvanized steel pipe 9 is connected with a right universal adapter 12, the other end of the right universal adapter 12 is connected with a right galvanized steel pipe 13, the left galvanized steel pipe 11 is provided with a left hoop type four-split spacing rod 14, the middle galvanized steel pipe 9 is provided with a middle hoop type four-split spacing rod 15, the right galvanized steel pipe 13 is provided with a right hoop type four-split spacing rod 16, the left hoop type four-split spacing rod 14, the middle hoop type four-split spacing rod 15 and the right hoop type four-split spacing rod 16 are provided with four-split wires 17, the left ends of the four-split wires 17 are connected with an electric device 4 introduced below a transformer substation portal, the right end of the quadriclashing wire 17 is connected with the strain clamp drainage tube 3 on the large side of the terminal tower.
A middle hoop type four-split spacer rod 15 is arranged on the middle galvanized steel pipe 9 at intervals, and a weight piece 18 is arranged between the middle hoop type four-split spacer rods 15 which are arranged at intervals; the hoop type four-split spacer 15 is formed by connecting a clamping sleeve hoop arranged at two ends of the hoop type four-split spacer with a steel pipe through bolts, and connecting a weight piece 18 on the steel pipe through a special stud in the middle of the hoop type four-split spacer; the universal adapter is connected with flanges at two ends of the steel pipe through bolts through flanges arranged at the end parts of the universal adapter, and the universal adapter is stable in structure.
After the lead is led out by the strain clamp drainage plate on the large side of the terminal tower, the cross spacer is additionally arranged, meanwhile, the hoop spacer on the steel pipe ensures that the lead is distributed into square arrangement with 450 mm separation distance, so that the lead distance and the steel pipe are perfectly combined through the drainage plate, meanwhile, as the angle degree exists in the terminal tower, the angle exists between the lead outlet direction of the rigid cage structure and the steel pipe, the universal adapter is additionally arranged, the lead is naturally bent under the guidance of the universal adapter and the hoop spacer, the lead torsion is reduced, the rigid cage structure is prevented from generating larger torsion along with the trend of the lead, the defect that the traditional jumper is bent and pressed at the place is overcome, and the jumper stable transition is realized.
Claims (2)
1. The utility model provides a 500kV transformer substation's inlet wire structure of very little inlet wire span, including terminal tower (1) and 500kV transformer substation inlet wire portal frame (2), be provided with strain clamp drainage tube (3) of terminal tower large-size side on terminal tower (1), be provided with transformer substation portal frame below at 500kV transformer substation inlet wire portal frame (2) and introduce electrical equipment (4), a serial communication port, be provided with portal frame strain insulator chain (5) on 500kV transformer substation inlet wire portal frame (2), be provided with terminal tower strain insulator chain (6) on terminal tower (1), be connected with triangular plate link fitting (7) between the tail end of portal frame strain insulator chain (5) and the tail end of terminal tower strain insulator chain (6), portal frame strain insulator chain (5) and terminal tower strain insulator chain (6) are being "V" font arrangement, connect galvanized steel pipe staple bolt (8) on triangular plate link fitting (7), be provided with zinc-coated steel pipe middle part (9) in zinc-coated steel pipe middle part (8), be connected with universal joint (10) in the left and right sides of the universal joint (10) of zinc-coated steel pipe (10) in the left and right sides, the universal joint (12) of zinc-side of being connected in the left and right sides, the universal joint (10) of zinc-side left end (10), the novel transformer substation comprises a left galvanized steel pipe (11), a left hoop-type four-split spacer (14) arranged on the left galvanized steel pipe (11), a middle hoop-type four-split spacer (15) arranged on the middle galvanized steel pipe (9), a right hoop-type four-split spacer (16) arranged on the right galvanized steel pipe (13), four split conductors (17) arranged on the left hoop-type four-split spacer (14), the middle hoop-type four-split spacer (15) and the right hoop-type four-split spacer (16), and electrical equipment (4) introduced below a portal frame of a transformer substation, wherein the right end of the four split conductors (17) is connected with a strain clamp drainage tube (3) on the large side of a terminal tower.
2. The wire inlet structure of the 500kV transformer substation with the extremely small wire inlet span according to claim 1 is characterized in that middle hoop-type four-split spacing rods (15) are arranged on the middle galvanized steel pipe (9) at intervals, and a heavy hammer piece (18) is arranged between the middle hoop-type four-split spacing rods (15) which are arranged at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911047230.2A CN110752570B (en) | 2019-10-30 | 2019-10-30 | Inlet wire structure of 500kV transformer substation with extremely small inlet wire span |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911047230.2A CN110752570B (en) | 2019-10-30 | 2019-10-30 | Inlet wire structure of 500kV transformer substation with extremely small inlet wire span |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110752570A CN110752570A (en) | 2020-02-04 |
| CN110752570B true CN110752570B (en) | 2024-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911047230.2A Active CN110752570B (en) | 2019-10-30 | 2019-10-30 | Inlet wire structure of 500kV transformer substation with extremely small inlet wire span |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110752570B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252277B (en) * | 2021-05-24 | 2024-06-25 | 中国能源建设集团山西省电力勘测设计院有限公司 | Mechanical response test device and test method for substation downlead simulating wind load |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210629052U (en) * | 2019-10-30 | 2020-05-26 | 中国能源建设集团山西省电力勘测设计院有限公司 | Inlet wire structure of 500kV transformer substation with extremely small inlet wire span |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2906390B2 (en) * | 1993-11-10 | 1999-06-21 | 古河電気工業株式会社 | Jumper for overhead transmission line between narrow lines |
| CN103606853A (en) * | 2013-11-27 | 2014-02-26 | 国家电网公司 | Operating method for replacing linear V insulator string on super and ultra-high voltage direct current transmission line in electrified mode |
| CN105391017A (en) * | 2015-12-14 | 2016-03-09 | 江东金具设备有限公司 | Extra-high voltage large-crossing cage type rigid wire jumper string with eight small-section drainage wire clamps and six large-section drainage wire clamps |
| CN109449868A (en) * | 2018-10-17 | 2019-03-08 | 国家电网有限公司 | +/-1100 KV direct-current line tangent tower lightning arrester device and dismounting method |
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2019
- 2019-10-30 CN CN201911047230.2A patent/CN110752570B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210629052U (en) * | 2019-10-30 | 2020-05-26 | 中国能源建设集团山西省电力勘测设计院有限公司 | Inlet wire structure of 500kV transformer substation with extremely small inlet wire span |
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| Publication number | Publication date |
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| CN110752570A (en) | 2020-02-04 |
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