CN209261319U - Three loop high-voltage DC line polar conductors and metal reflow line are the same as tower arragement construction - Google Patents
Three loop high-voltage DC line polar conductors and metal reflow line are the same as tower arragement construction Download PDFInfo
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- CN209261319U CN209261319U CN201821870908.8U CN201821870908U CN209261319U CN 209261319 U CN209261319 U CN 209261319U CN 201821870908 U CN201821870908 U CN 201821870908U CN 209261319 U CN209261319 U CN 209261319U
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Abstract
The utility model protects three loop high-voltage DC line polar conductors of one kind and metal reflow line with tower arragement construction, include tower body, upper layer polar conductor cross-arm and lower layer's polar conductor cross-arm are set on tower body, earth wire support is set at the top of the upper layer polar conductor cross-arm, three circuits i.e. sextupole conducting wire is arranged on upper layer polar conductor cross-arm and lower layer's polar conductor cross-arm, in the lower section of lower layer's polar conductor cross-arm, metal reflow line cross-arm is set, in the uniform hanging metal return wire in tower body two sides under the metal reflow line cross-arm, the utility model is using three circuit high direct voltage lines and metal reflow line wiring on the same tower, it does not need in addition to select earth electrode field and ground path corridor, fundamentally solve the problems, such as that earth electrode field selection is difficult, and surrounding enviroment are influenced smaller, hvdc transmission line electromagnetic environment can also be improved, and iron tower structure is simple, stress is clearly good , convenient for design, construction and O&M.
Description
Technical field
The utility model relates to electrical distribution field, especially a kind of three loop high-voltage DC line polar conductors and metal are returned
Streamline is the same as tower arragement construction.
Background technique
Certain ± 800kV high voltage direct current project of transmitting and converting electricity of the country at present, is set up using single loop, and the earth foldback system is used and connect
Earth polar scheme will inevitably walk developed area, economy hair in super, the UHVDC Transmission Lines built and planned at present
Barrier is numerous near up to regional path corridor, and surrounding enviroment are complicated, and the earth electrode field and ground electrode circuit for meeting condition are walked
Corridor selection is difficult, and in order to eliminate influence of the earthing pole to the numerous pipelines in periphery and D.C. magnetic biasing to substation transformer, protection is arranged
It is more to apply investment.The distribution of obstacles such as residential house are intensive around ground electrode circuit path simultaneously, cause largely to remove.
Existing high voltage DC engineering mostly uses earthing pole scheme as the earth foldback system, and some high voltage DC engineerings use
Metal reflow line scheme, but polar conductor at most uses double loop to set up.It has the disadvantage that:
(1) partial section is unable to satisfy three loop high-voltage DC engineering needs of planning；
(2) selection of earthing pole location and ground electrode circuit is influenced more by extraneous various factors, and construction is difficult；
(3) due to voltage class height, hvdc transmission line electromagnetic environment is poor, needs to mention in the case where conductor cross-section is certain
High tower height increases interpolar away from meeting condition.
Utility model content
The technical issues of the utility model is solved is i.e. to provide a kind of three loop high-voltage DC lines, metal reflow line same
Tower arragement construction, can solve that local line corridor is crowded, the problem of earth electrode field and ground electrode circuit Path selection difficulty.
Technological means used by the utility model is as described below.
A kind of three loop high-voltage DC line polar conductors and metal reflow line with tower arragement construction, characterized by comprising:
Tower body includes upper layer polar conductor cross-arm and lower layer's polar conductor cross-arm, earth wire support is arranged at the top of the upper layer polar conductor cross-arm, on
Sextupole conducting wire is arranged on layer polar conductor cross-arm and lower layer's polar conductor cross-arm；In the lower section of lower layer's polar conductor cross-arm, metal reflow is set
Line cross-arm, metal reflow line cross-arm lower section tower body side-by-side mounting metal reflow line.
The metal reflow line is uniformly distributed in tower body two sides.
The uniform hanging metal return wire in tower body two sides.
The underhung two-stage conducting wire of the upper layer polar conductor cross-arm, the underhung quadrupole of lower layer's polar conductor cross-arm are led
Line.
Two polar conductors of the upper layer polar conductor cross-arm suspension are in double triangle arrangements, and are respectively in tower body two sides, under described
Two polar conductors in nearly tower body two sides of layer polar conductor cross-arm are triangularly arranged, and lower layer's polar conductor cross-arm is in remote tower body
The two polar conductor vertical hangings at end.
The utility model has the beneficial effects that the arragement construction of the utility model, is three circuit DC lines, sextupole pole is led altogether
Line, while using metal reflow line as the earth foldback system, metal reflow line cross-arm is placed in the tower body below polar conductor cross-arm
Two sides, and it is evenly arranged metal reflow line.By the setting of metal reflow line, solve the problems, such as that earth electrode field selection is difficult,
And metal reflow line and DC line wiring on the same tower, without individually selection ground electrode circuit corridor.Metal reflow line is placed in pole and leads
Facilitate to reduce ground formate field intensity, ion current density, audible noise and radio interference below line, improves hvdc transmission line
Electromagnetic environment, it is smaller on surrounding enviroment influence, and iron tower structure is simple, and stress is clearly good, convenient for design and construction.
Detailed description of the invention
Fig. 1 is an embodiment of the present invention structural schematic diagram.
Specific embodiment
The utility model protects a kind of three loop high-voltage DC line polar conductors and metal reflow line with tower arragement construction,
It can be applied to a variety of towers, be illustrated below using the tower based on ± 500kV voltage class as embodiment, other voltage class
Three circuit DC lines this arrangement can also be used, the tower of specific different voltages grade can in terms of cross-arm
It is determined by those skilled in the art, is not limited excessively herein according to actual needs.
Upper layer polar conductor cross-arm 2 and lower layer's polar conductor cross-arm 3, upper layer pole are arranged embodiment as shown in Figure 1 on tower body 1
Earth wire support 11 is set at the top of conducting wire cross-arm.
The underhung two-stage conducting wire of upper layer polar conductor cross-arm 2 can be located at tower body two sides and in double triangle arrangements.Lower layer pole
Four polar conductor of underhung of conducting wire cross-arm 3, two polar conductors close to tower body side are arranged in double triangle, lower layer's polar conductor cross-arm
Two polar conductors away from tower body both ends farther out can vertical hanging.Various arrangement mode can be used in polar conductor arrangement mode, and not only limits
Due to this.
The emphasis of the utility model is: metal reflow line cross-arm 4, the metal is arranged in the lower section of lower layer's polar conductor cross-arm 3
In the uniform hanging metal return wire 41 in tower body two sides under return wire cross-arm 4, it is illustrated as tower body two sides and respectively hangs 3 groups of metal reflow lines
41, it's not limited to that certainly, can select the quantity of metal reflow line according to the actual situation.
Claims (5)
1. a kind of three loop high-voltage DC line polar conductors and metal reflow line with tower arragement construction, characterized by comprising:
Tower body (1) includes upper layer polar conductor cross-arm (2) and lower layer's polar conductor cross-arm (3), upper layer polar conductor cross-arm (2) top
Earth wire support (11) are arranged in portion, and sextupole conducting wire is arranged on upper layer polar conductor cross-arm (2) and lower layer's polar conductor cross-arm (3)；
Metal reflow line cross-arm (4) are set in the lower section of lower layer's polar conductor cross-arm (3), squarer under the metal reflow line cross-arm (4)
Body side-by-side mounting metal reflow line (41).
2. three loop high-voltages DC line polar conductor as described in claim 1 and metal reflow line are with tower arragement construction, special
Sign is that metal reflow line (41) two sides Yu Tashen are uniformly distributed.
3. three loop high-voltages DC line polar conductor as claimed in claim 2 and metal reflow line are with tower arragement construction, special
Sign is that the tower body two sides respectively hang 3 groups of metal reflow lines (41).
It is tied 4. the three loop high-voltage DC line polar conductors and metal reflow line as described in claims 1 to 3 is any are arranged with tower
Structure, which is characterized in that the underhung two-stage conducting wire of the upper layer polar conductor cross-arm (2), the lower section of lower layer's polar conductor cross-arm (3)
Hang four polar conductors.
5. three loop high-voltages DC line polar conductor as claimed in claim 4 and metal reflow line are with tower arragement construction, special
Sign is that two polar conductors of upper layer polar conductor cross-arm (2) suspension are in double triangle arrangements, and are respectively in tower body (1) two sides, institute
Two polar conductors in nearly tower body (1) two sides for stating lower layer's polar conductor cross-arm (3) are triangularly arranged, and lower layer's polar conductor is horizontal
(4) are carried on a shoulder pole in the two polar conductor vertical hangings at remote tower body end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821870908.8U CN209261319U (en) | 2018-11-13 | 2018-11-13 | Three loop high-voltage DC line polar conductors and metal reflow line are the same as tower arragement construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821870908.8U CN209261319U (en) | 2018-11-13 | 2018-11-13 | Three loop high-voltage DC line polar conductors and metal reflow line are the same as tower arragement construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209261319U true CN209261319U (en) | 2019-08-16 |
Family
ID=67554814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821870908.8U Active CN209261319U (en) | 2018-11-13 | 2018-11-13 | Three loop high-voltage DC line polar conductors and metal reflow line are the same as tower arragement construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209261319U (en) |
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2018
- 2018-11-13 CN CN201821870908.8U patent/CN209261319U/en active Active
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