CN112489896B - Wire windage yaw restraines insulator chain - Google Patents
Wire windage yaw restraines insulator chain Download PDFInfo
- Publication number
- CN112489896B CN112489896B CN202011320950.4A CN202011320950A CN112489896B CN 112489896 B CN112489896 B CN 112489896B CN 202011320950 A CN202011320950 A CN 202011320950A CN 112489896 B CN112489896 B CN 112489896B
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- Prior art keywords
- insulator string
- cross arm
- windage yaw
- support
- tower cross
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/04—Chains; Multiple chains
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/06—Fastening of insulator to support, to conductor, or to adjoining insulator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
Abstract
According to the wire windage yaw suppression insulator string, a stable triangular structure is formed among the first insulator string, the second insulator string and the support, and windage yaw swing is reduced; moreover, the triangular structure enables the transmission conductor to be less influenced by wind load power, reduces the operation risk brought by the value of the wind load power coefficient and improves the line operation reliability; in addition, the triangular structure can also be suitable for different types of power transmission towers, and the application range is wide.
Description
Technical Field
The invention relates to the technical field of power transmission and transformation, in particular to a wire windage yaw suppression insulator string.
Background
The wind deflection flashover of the power transmission line is one of the main problems influencing the safe operation of the power transmission line, and the reasons for generating the wind deflection flashover mainly comprise that an insulator string and a power transmission lead hung on the insulator string can generate wind deflection swinging under the action of wind load, the distance between a charged part and a tower is smaller than an allowable electric gap in the swinging process, and a discharging phenomenon, namely a wind deflection flashover accident, can occur between the power transmission line and the tower.
Aiming at the wind deviation flashover accident of the power transmission line, a plurality of measures for inhibiting the wind deviation flashover of the suspension insulator string are provided in the prior art. For example, a method of hanging a weight on an insulator string is based on a simple static rigid body theory, an inertia swing effect of the weight is neglected, and the possibility of dynamic oscillation amplification under unstable wind is increased although swing restoring force is increased by the hanging weight; in addition, a method using the V-shaped insulator string is adopted, an approximate triangle is formed between the V-shaped insulator string and the tower frame, and the stability is good, but the problems that how to calculate the included angle between two sub-parts forming the V-shaped insulator string is most reasonable in the range of the included angle, and how to calculate the windage yaw swing of the V-shaped insulator string is still needed to be solved; in addition, the V-shaped insulator string is relatively suitable for a linear cat-head type power transmission tower, and is not suitable for the application of a dry-type power transmission tower.
Disclosure of Invention
The invention aims to solve at least one of the technical defects, in particular to the technical defects that the measure for inhibiting the windage yaw flashover of the suspension insulator string in the prior art has poor effect and cannot be adapted to different types of power transmission towers.
The embodiment of the invention provides a wire windage yaw suppression insulator string, which comprises: the first insulator string, the second insulator string and the bracket;
one end of the first insulator string is vertically arranged below a tower cross arm, the other end of the first insulator string is connected with a transmission conductor, the support is horizontally arranged on the tower cross arm, and the support and the first insulator string are positioned at the same intersection of the tower cross arm;
one end of the support horizontally extends to the outer side of the tower cross arm and is fixed with one end of the second insulator string, and the other end of the second insulator string is fixed with the bottom of the first insulator string.
Optionally, one end of the first insulator string is vertically installed below the tower cross arm through a first fixing piece.
Optionally, the support is horizontally mounted on the tower cross arm through a second fixing piece, and the first fixing piece and the second fixing piece are located in the same vertical direction.
Optionally, the bracket is of steel plate type construction.
Optionally, the second insulator string is connected to the insulator core rod at the bottom of the first insulator string through a first fastener.
Optionally, the second insulator string is connected to an end of the bracket by a second fastener.
According to the technical scheme, the embodiment of the invention has the following advantages:
the invention provides a wire windage yaw suppression insulator string, which comprises: the first insulator string, the second insulator string and the bracket; one end of the first insulator string is vertically arranged below a tower cross arm, the other end of the first insulator string is connected with a transmission conductor, the support is horizontally arranged on the tower cross arm, and the support and the first insulator string are positioned at the same intersection of the tower cross arm; one end of the support horizontally extends to the outer side of the tower cross arm and is fixed with one end of the second insulator string, and the other end of the second insulator string is fixed with the bottom of the first insulator string.
In the invention, a stable triangular structure is formed among the first insulator string, the second insulator string and the bracket, so that windage yaw swing is reduced; in addition, the triangular structure enables the power transmission conductor to be less affected by wind load power, reduces the operation risk brought by the value of the wind load power coefficient and improves the operation reliability of the line; in addition, the triangular structure can also be suitable for different types of power transmission towers, and the application range is wide.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a conductor windage yaw suppression insulator string according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a conductor windage yaw suppression insulator string according to an embodiment of the present invention, and in fig. 1, the present invention provides a conductor windage yaw suppression insulator string, which specifically includes: a first insulator string 30, a second insulator string 40, a support 20; one end of the first insulator string 30 is vertically installed below the tower cross arm 10, the other end of the first insulator string is connected with the transmission conductor 50, the support 20 is horizontally installed on the tower cross arm 10, and the support 20 and the first insulator string 30 are located at the same intersection of the tower cross arm 10; one end of the support 20 horizontally extends to the outer side of the tower cross arm 10 and is fixed with one end of the second insulator string 40, and the other end of the second insulator string 40 is fixed with the bottom of the first insulator string 30.
In this application, on the basis of current first insulator string 30, through shaft tower cross arm 10 horizontal installation support 20, and there is second insulator string 40 at the end connection that support 20 level extends to the shaft tower cross arm 10 outside, the bottom of this second insulator string 40 is fixed with the bottom of first insulator string 30, in addition, support 20 and first insulator string 30 are located the same junction of shaft tower cross arm 10, therefore, make and form stable triangular structure between support 20, first insulator string 30 and the second insulator string 40, thereby can reduce the windage yaw, improve circuit operation reliability.
In addition, the triangular structure formed by the bracket 20, the first insulator string 30 and the second insulator string 40 can be applied to not only a linear cat-head type power transmission tower but also a dry-type power transmission tower, and the application range is wide.
In addition, the second insulator string 40 is suitable for being connected with the bottom of the first insulator string 30, so that the whole first insulator string 30 can be fixed, the weight of the insulator string can be increased to a certain extent, and wind deflection swing is reduced.
Further, the support 20 and the tower cross arm 10 may be arranged in a cross-shaped staggered manner, or may be arranged in a cross-shaped manner at other angles, which may be determined according to the geographical environment of the installation location of the power transmission tower, such as the wind direction.
Furthermore, the end of the support frame 20 located inside the tower cross arm 10 may be provided with a gravity block to balance the forces on both sides of the support frame 20.
In one embodiment, one end of the first insulating sub-string 30 is vertically installed below the tower cross arm 10 through a first fixing member, so that installation and maintenance are facilitated.
In one embodiment, the support frame 20 is horizontally installed on the tower cross arm 10 through a second fixing member, and the first fixing member and the second fixing member are located in the same vertical direction, which is beneficial to forming a stable triangular structure.
In one embodiment, the bracket 20 is a steel plate type structure capable of forming a stable support.
In one embodiment, the second insulator string 40 is connected to the insulator core rod at the bottom of the first insulator string 30 by a first fastener, which facilitates installation and maintenance.
In one embodiment, the second insulator string 40 is attached to the end of the bracket 20 by a second fastener to facilitate installation and maintenance.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (3)
1. A wire windage yaw suppression insulator string, comprising: the first insulator string, the second insulator string and the bracket;
one end of the first insulator string is vertically arranged below a tower cross arm, the other end of the first insulator string is connected with a transmission conductor, the support is horizontally arranged on the tower cross arm, and the support and the first insulator string are positioned at the same intersection of the tower cross arm;
one end of the support horizontally extends to the outer side of the tower cross arm and is fixed with one end of the second insulator string, and the other end of the second insulator string is fixed with the bottom of the first insulator string;
one end of the first insulator string is vertically arranged below the tower cross arm through a first fixing piece;
the support is horizontally arranged on the tower cross arm through a second fixing piece, and the first fixing piece and the second fixing piece are positioned in the same vertical direction;
the second insulator string is connected with the end of the bracket through a second fastener.
2. The wire windage yaw suppression insulator string of claim 1, wherein the bracket is a steel plate type structure.
3. The wire windage yaw suppression insulator string of claim 1, wherein the second insulator string is connected to the insulator mandrel at the bottom of the first insulator string by a first fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011320950.4A CN112489896B (en) | 2020-11-23 | 2020-11-23 | Wire windage yaw restraines insulator chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011320950.4A CN112489896B (en) | 2020-11-23 | 2020-11-23 | Wire windage yaw restraines insulator chain |
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| Publication Number | Publication Date |
|---|---|
| CN112489896A CN112489896A (en) | 2021-03-12 |
| CN112489896B true CN112489896B (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011320950.4A Active CN112489896B (en) | 2020-11-23 | 2020-11-23 | Wire windage yaw restraines insulator chain |
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| CN (1) | CN112489896B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU52250U1 (en) * | 2005-09-23 | 2006-03-10 | Государственное унитарное предприятие "Всероссийский электротехнический институт им. В.И. Ленина" | INSULATING CROSS |
| CN104201632A (en) * | 2014-08-08 | 2014-12-10 | 国家电网公司 | Adjustable power transmission line windage yaw preventing device |
| CN204155673U (en) * | 2013-12-01 | 2015-02-11 | 国家电网公司 | A kind of wind-deviation oblique pull insulator |
| CN104733138A (en) * | 2015-03-25 | 2015-06-24 | 中国电力工程顾问集团中南电力设计院有限公司 | Ultra-high voltage direct-current circuit Y-shaped string tangent tower |
| CN106098266A (en) * | 2016-08-17 | 2016-11-09 | 国网电力科学研究院武汉南瑞有限责任公司 | Wind-deviation Y type composite insulator and manufacture method thereof |
| CN108305724A (en) * | 2018-04-11 | 2018-07-20 | 固力发电气有限公司 | A kind of compound anti-bias wind insulator |
| CN110518531A (en) * | 2019-09-24 | 2019-11-29 | 国网新疆电力有限公司伊犁供电公司 | A kind of inclined flashover flexibility damping unit of power transmission line wind and implementation method |
| CN110912058A (en) * | 2019-12-06 | 2020-03-24 | 中国电力工程顾问集团西南电力设计院有限公司 | Wind deflection prevention semi-V-shaped suspension string |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111627620A (en) * | 2020-06-29 | 2020-09-04 | 中国电力工程顾问集团西南电力设计院有限公司 | Top-carrying type suspension V-shaped insulator string |
-
2020
- 2020-11-23 CN CN202011320950.4A patent/CN112489896B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU52250U1 (en) * | 2005-09-23 | 2006-03-10 | Государственное унитарное предприятие "Всероссийский электротехнический институт им. В.И. Ленина" | INSULATING CROSS |
| CN204155673U (en) * | 2013-12-01 | 2015-02-11 | 国家电网公司 | A kind of wind-deviation oblique pull insulator |
| CN104201632A (en) * | 2014-08-08 | 2014-12-10 | 国家电网公司 | Adjustable power transmission line windage yaw preventing device |
| CN104733138A (en) * | 2015-03-25 | 2015-06-24 | 中国电力工程顾问集团中南电力设计院有限公司 | Ultra-high voltage direct-current circuit Y-shaped string tangent tower |
| CN106098266A (en) * | 2016-08-17 | 2016-11-09 | 国网电力科学研究院武汉南瑞有限责任公司 | Wind-deviation Y type composite insulator and manufacture method thereof |
| CN108305724A (en) * | 2018-04-11 | 2018-07-20 | 固力发电气有限公司 | A kind of compound anti-bias wind insulator |
| CN110518531A (en) * | 2019-09-24 | 2019-11-29 | 国网新疆电力有限公司伊犁供电公司 | A kind of inclined flashover flexibility damping unit of power transmission line wind and implementation method |
| CN110912058A (en) * | 2019-12-06 | 2020-03-24 | 中国电力工程顾问集团西南电力设计院有限公司 | Wind deflection prevention semi-V-shaped suspension string |
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| CN112489896A (en) | 2021-03-12 |
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