CN110752570A - 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
- CN110752570A CN110752570A CN201911047230.2A CN201911047230A CN110752570A CN 110752570 A CN110752570 A CN 110752570A CN 201911047230 A CN201911047230 A CN 201911047230A CN 110752570 A CN110752570 A CN 110752570A
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- CN
- China
- Prior art keywords
- steel pipe
- incoming line
- transformer substation
- galvanized steel
- insulator string
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- 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
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- 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
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- Electric Cable Installation (AREA)
Abstract
The invention discloses an incoming line structure of a 500kV transformer substation with an extremely small incoming line span, which solves the incoming line problem of the 500kV transformer substation with the extremely small incoming line span. The wire in the incoming line shelves structure with traditional "strain insulator string-wire-strain insulator string" saves, "the wire" directly links to each other the afterbody of the strain insulator string of both sides, increase a rigidity cage structure transition wire in the below of the strain insulator string afterbody that links to each other, the wire is direct to be inserted on rigidity cage structure transition wire by the strain clamp drainage tube of terminal tower major possession side, the wire is again by rigidity cage structure direct access to the equipment of transformer substation portal frame below on, rigidity cage structure adopts the steel pipe to add the structure of quadripartion staple bolt formula conductor, install the weight piece additional in the middle of the staple bolt formula conductor, increase universal switching backup pad in the export of rigidity cage structure, with the torsion that reduces the steel pipe and bear, prevent that the steel pipe from wriggling. The requirement of the electric clearance is met, and the device has the characteristic of good stability.
Description
Technical Field
The invention relates to an incoming line structure of a transformer substation, in particular to an incoming line structure of a 500kV transformer substation with an extremely small incoming line span.
Background
Along with the large-scale construction of electric power engineering, the construction land of ultra (special) high-voltage engineering is more and more tense, the society pays attention to environmental protection, and the basic farmland is protected, so that the site selection of a transformer substation becomes more and more difficult, the occupied area of the transformer substation is more and more rigorous, and the space reserved outside the site for a power transmission line terminal tower is more and more narrow, so that an incoming line gear with an extra-small span is often generated outside a 500kV transformer substation, the design and construction of the incoming line gear of the transformer substation are difficult to occupy insufficiently, even the length of the incoming line gear is smaller than that of a strain insulator string arranged on two sides, the incoming line structure of the transformer substation cannot be designed according to the conventional strain insulator string-wire-strain insulator string type, and how to solve the incoming line of the 500kV transformer substation is a problem to be solved.
Disclosure of Invention
The invention provides an incoming line structure of a 500kV transformer substation with an extremely small incoming line span, which solves the incoming line problem of the 500kV transformer substation with the extremely small incoming line span.
The invention solves the technical problems by the following technical scheme:
the general concept of the invention is: the lead in the traditional lead-in gear structure of strain insulator string-lead-strain insulator string is saved, the tails of the strain insulator strings on two sides are directly connected, a rigid cage structure transition lead is added below the tail of the connected strain insulator string, the lead is directly connected to the rigid cage structure transition lead through a strain clamp drainage tube on the large-size side of a terminal tower, the lead is directly connected to equipment below a transformer substation portal frame through the rigid cage structure, the rigid cage structure adopts a steel pipe and four-split hoop type spacer structure, a weight piece is additionally arranged in the middle of the hoop type spacer, the rigid cage structure transition lead is prevented from swinging along the vertical line direction under the condition of strong wind, a universal switching support plate is added at the outlet of the rigid cage structure due to the fact that the outlet direction of the lead on one side of the rigid cage structure has an angle with the steel pipe, so as to reduce the torsion borne by the steel pipe and prevent the steel pipe from twisting.
An incoming line structure of a 500kV transformer substation with an extremely small incoming line span comprises a terminal tower and a 500kV transformer substation incoming line portal frame, wherein a tension clamp drainage tube on the large-size side of the terminal tower is arranged on the terminal tower, incoming electric equipment below the 500kV transformer substation incoming line portal frame is arranged below the transformer substation portal frame, a portal frame tension insulator string is arranged on the 500kV transformer substation incoming line portal frame, a terminal tower tension insulator string is arranged on the terminal tower, a triangular plate connecting hardware fitting is connected between the tail end of the portal frame tension insulator string and the tail end of the terminal tower tension insulator string, the portal frame tension insulator string and the terminal tower tension insulator string are arranged in a V shape, a galvanized steel pipe hoop is hung on the triangular plate connecting hardware fitting, a middle galvanized steel pipe is arranged in the galvanized steel pipe hoop, and a left universal adapter is connected at the left end of the middle galvanized steel pipe, the other end at the universal adapter of left side is connected with left side galvanized steel pipe, right-hand member at middle part galvanized steel pipe is connected with right side universal adapter, the other end at right side universal adapter is connected with right side galvanized steel pipe, be provided with left side staple bolt formula quartering conductor spacer on left side galvanized steel pipe, be provided with middle part staple bolt formula quartering conductor spacer on middle part galvanized steel pipe, be provided with right side staple bolt formula quartering conductor spacer on right side galvanized steel pipe, at left side staple bolt formula quartering conductor spacer, be provided with the quadripartion wire on conductor spacer of middle part staple bolt formula quartering and right side staple bolt formula quartering conductor spacer, the left end of quadripartion wire is in the same place with the electrical equipment is introduced to the portal frame below of transformer substation, the right-hand member of quadripartion wire links together with the strain clamp drainage tube.
The middle hoop type four-split spacing rods are arranged on the middle galvanized steel pipe at intervals, and the heavy hammer sheets are arranged between the middle hoop type four-split spacing rods arranged at intervals.
According to the invention, the smooth wire entering of the 500kV substation wire inlet gear under the condition of extremely small span is realized, the rigid cage type jumper wires below the two insulator strings arranged in a V shape are hard in the soft middle and soft in the hard middle, namely the characteristic of natural bending of the wire is utilized, the advantages of large flexibility of the hoop type spacer and strong windage yaw resistance of the heavy hammer piece are combined, the universal joints additionally arranged at the two ends of the steel pipe realize the direction adjustment in a three-dimensional space, and the problems of bending of the wire and twisting of the rigid cage type structure are avoided; various hardware fittings are used for making up for deficiencies and are skillfully combined together, the purpose of entering a station by a wire of an extra-small incoming line gear is realized, the requirement of an electrical gap is met, and the novel hardware fitting has the characteristics of good stability, strong adaptability, simple processing and convenience and attractiveness in installation.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the connection of two insulator strings with a rigid cage structure according to the present invention.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
an incoming line structure of a 500kV transformer substation with an extremely small incoming line span comprises a terminal tower 1 and a 500kV transformer substation incoming line portal frame 2, a tension clamp drainage tube 3 on the large-size side of the terminal tower is arranged on the terminal tower 1, incoming electric equipment 4 is arranged below the 500kV transformer substation incoming line portal frame 2, a portal frame tension insulator string 5 is arranged on the 500kV transformer substation incoming line portal frame 2, a terminal tower tension insulator string 6 is arranged on the terminal tower 1, a triangular plate connecting hardware fitting 7 is connected between the tail end of the portal frame tension insulator string 5 and the tail end of the terminal tower tension insulator string 6, the portal frame tension insulator string 5 and the terminal tower tension insulator string 6 are arranged in a V shape, a galvanized steel pipe hoop 8 is hung on the triangular plate connecting hardware 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, a left hoop type four-split spacing rod 14 is arranged on the left galvanized steel pipe 11, a middle hoop type four-split spacing rod 15 is arranged on the middle galvanized steel pipe 9, the right-side hoop type four-split conductor spacer 16 is arranged on the right-side galvanized steel pipe 13, the four-split conductors 17 are arranged on the left-side hoop type four-split conductor spacer 14, the middle hoop type four-split conductor spacer 15 and the right-side hoop type four-split conductor spacer 16, the left ends of the four-split conductors 17 are connected with the lead-in electric equipment 4 below the portal frame of the transformer substation, and the right ends of the four-split conductors 17 are connected with the strain clamp drainage pipes 3 on the large-size side of the terminal tower.
Middle hoop type four-split spacing rods 15 are arranged on the middle galvanized steel pipe 9 at intervals, and heavy hammer sheets 18 are arranged between the middle hoop type four-split spacing rods 15 arranged at intervals; the hoop type quadripartion spacer 15 is connected with the steel pipe through the clamping sleeve hoops arranged at the two ends of the spacer by bolts, and the heavy hammer piece 18 is connected on the steel pipe through a special stud bolt in the middle of the spacer; the universal adapter is connected with flanges at two ends of the steel pipe through the flanges arranged at the end parts of the universal adapter through bolts, and the universal adapter is stable in structure.
The wire is drawn forth the back by the strain clamp drainage plate of terminal tower side of big-size, install the cross conductor spacer additional, the staple bolt formula conductor spacer on the steel pipe guarantees that the square of wire composition crack interval 450 millimeters arranges simultaneously, make wire interval and steel pipe pass through the drainage plate perfect adaptation, simultaneously because there is the corner number degree in the terminal tower, rigidity cage structure wire export direction has the angle with the steel pipe, universal adapter is increased here, make the wire naturally crooked under universal adapter and the guide of staple bolt formula conductor spacer, wire torsion has been reduced, rigidity cage structure has been avoided producing great wrench movement along with the wire trend, traditional wire jumper is here bent broken, the defect of pressurized, the steady transition of wire jumper has been realized.
Claims (2)
1. An incoming line structure of a 500kV transformer substation with an extremely small incoming line span comprises a terminal tower (1) and a 500kV transformer substation incoming line portal frame (2), wherein a strain clamp drainage tube (3) on the large-size side of the terminal tower is arranged on the terminal tower (1), an incoming electric device (4) is arranged below the 500kV transformer substation incoming line portal frame (2), the incoming line structure is characterized in that a portal frame strain insulator string (5) is arranged on the 500kV transformer substation incoming line portal frame (2), a terminal tower strain insulator string (6) is arranged on the terminal tower (1), a triangular plate connecting hardware fitting (7) is connected between the tail end of the portal frame strain insulator string (5) and the tail end of the terminal tower strain insulator string (6), the portal frame strain insulator string (5) and the terminal tower strain insulator string (6) are arranged in a V shape, a galvanized steel pipe hoop (8) is hung on the triangular plate connecting hardware fitting (7), a middle galvanized steel pipe (9) is arranged in a 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), a left hoop type four-split spacer (14) is arranged on the left galvanized steel pipe (11), a middle hoop type four-split spacer (15) is arranged on the middle galvanized steel pipe (9), a right hoop type four-split spacer (16) is arranged on the right galvanized steel pipe (13), four-split leads (17) are 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), the left end of the four-bundle conductor (17) is connected with the lead-in electric equipment (4) below the portal frame of the transformer substation, and the right end of the four-bundle conductor (17) is connected with the strain clamp drainage tube (3) on the large-size side of the terminal tower.
2. The incoming line structure of 500kV transformer substation with extremely small incoming line span according to claim 1, characterized in that middle hoop-type four-split spacers (15) are arranged on the middle galvanized steel pipe (9) at intervals, and a weight piece (18) is arranged between the middle hoop-type four-split spacers (15) arranged at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911047230.2A CN110752570A (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 CN110752570A (en) | 2019-10-30 | 2019-10-30 | Inlet wire structure of 500kV transformer substation with extremely small inlet wire span |
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| Publication Number | Publication Date |
|---|---|
| CN110752570A true CN110752570A (en) | 2020-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911047230.2A Pending CN110752570A (en) | 2019-10-30 | 2019-10-30 | Inlet wire structure of 500kV transformer substation with extremely small inlet wire span |
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| CN (1) | CN110752570A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252277A (en) * | 2021-05-24 | 2021-08-13 | 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 method for transformer substation down lead capable of simulating wind load |
-
2019
- 2019-10-30 CN CN201911047230.2A patent/CN110752570A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252277A (en) * | 2021-05-24 | 2021-08-13 | 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 method for transformer substation down lead capable of simulating wind load |
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