CN114243612B - Power transmission line galloping suppression device with windward cross section adaptively changed - Google Patents
Power transmission line galloping suppression device with windward cross section adaptively changed Download PDFInfo
- Publication number
- CN114243612B CN114243612B CN202111671564.4A CN202111671564A CN114243612B CN 114243612 B CN114243612 B CN 114243612B CN 202111671564 A CN202111671564 A CN 202111671564A CN 114243612 B CN114243612 B CN 114243612B
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- baffle
- baffle plate
- transmission line
- torsion spring
- galloping
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Classifications
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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
- H02G7/14—Arrangements or devices for damping mechanical oscillations of lines, e.g. for reducing production of sound
-
- 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
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention belongs to the technical field of power transmission line galloping suppression, and particularly relates to a power transmission line galloping suppression device with a windward section adaptively changed, and an installation method and application thereof. The transmission line galloping suppression device with the windward section capable of adaptively changing can achieve the effect of suppressing galloping by adaptively changing the windward area, and has the advantages of good effect of suppressing the galloping of the transmission line, simple structure, low manufacturing cost and convenience in installation and disassembly.
Description
Technical Field
The invention belongs to the technical field of power transmission line galloping suppression, and particularly relates to a power transmission line galloping suppression device with a windward cross section adaptively changed, and a mounting method and application thereof.
Background
The galloping of the power transmission line can only occur under the condition of ice coating of the power transmission line under the condition of specific wind direction and wind speed. Line galloping can cause interphase flashover, damage to a ground wire, hardware fittings and insulators, and when serious, the line trips, power failure, line breakage, tower inversion and the like can be caused, so that the safe and stable operation of a power grid is seriously threatened, and great economic loss is caused.
The current device for preventing and controlling the galloping of the power transmission line mainly comprises an inter-phase spacer, a double-pendulum galloping preventer, a wire clamp rotary spacer, a resonance damping control device and the like. The anti-galloping principle of the phase-to-phase spacer is to limit the amplitude of the line galloping by changing the structural characteristics of the line. The anti-galloping principle of the double-pendulum anti-galloping device is that the line galloping control is realized by changing the stable condition of the wire structure damping matrix tripping line. The anti-galloping principle of the wire clamp rotary spacer is to restrain the galloping amplitude by changing the ice-type of the ice-covered sub-wire and the corresponding aerodynamic parameters. The resonance damping control mode mainly utilizes a spring damping device to realize the control of the line galloping amplitude through tuning control and damping energy consumption. However, the device is made of metal materials, has larger mass, can increase extra bearing capacity for the wire, and is easy to generate abrasion and collision with the wire or hardware fitting when the wire is in galloping, so that the running risk of the wire is increased.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide a transmission line galloping suppression device with a windward section adaptively changed, and an installation method and application thereof.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a transmission line galloping suppression device of windward cross-section self-adaptation change, includes baffle one fixed with two wires respectively, baffle one side edge is through torsional spring one connection baffle two, baffle one and baffle two contained angle under the natural state be 10-20.
Preferably, the baffle has a width equal to the distance between the two wires.
Preferably, the lower end of the second baffle plate is also connected with the third baffle plate through a third torsion spring.
Preferably, the included angle between the third baffle and the second baffle in the natural state is 20-30 degrees.
Preferably, the widths of the second baffle and the third baffle are equal to those of the first baffle, and the areas of the second baffle and the third baffle are 2/3-1 times that of the first baffle.
Preferably, the thicknesses of the first baffle, the second baffle and the third baffle are all 5-10mm.
The method for installing the transmission line galloping suppression device with the windward section adaptively changed comprises the following steps of:
the wire passes through the first torsion spring, the first baffle and the second baffle are fixed on two extension edges of the first torsion spring by adopting glue, one opposite edge of the first baffle and the first torsion spring is fixed on the other wire, the wire and the first torsion spring are filled and separated by a rubber pad, and a rubber plug is respectively arranged on the wires at two ends of the first torsion spring.
Preferably, one side of the baffle I opposite to the torsion spring I is fixed on the other wire through the torsion spring II, the torsion spring II comprises an extension side, the extension side is fixed with the baffle I through glue, the wire and the torsion spring II are filled and separated by a rubber pad, and rubber plugs are respectively arranged on the wires at the two ends of the torsion spring II.
Preferably, the mounting method further comprises: the lower end of the second baffle is connected with the third baffle through a third torsion spring, and the third baffle and the second baffle are fixed on two extension edges of the third torsion spring by glue.
An application of a transmission line galloping suppression device with a windward section adaptively changed in transmission line galloping suppression.
The invention has the positive beneficial effects that:
1. the invention discloses a power transmission line galloping suppression device with a self-adaptive change of a windward section based on a basic mechanism of line galloping, wherein a wire can gallop under a certain wind speed, a baffle is opened and closed by a torsion spring, the baffle can be opened by the thrust of wind, after the wind speed is reduced, the baffle can be slowly restored to an original state by being driven by the torsion spring after the wire stops galloping, and the windward section area is introduced to change the windward resistance of the wire, so that the elimination of the line galloping or the reduction of the galloping amplitude under the common galloping meteorological conditions are realized.
The transmission line galloping suppression device with the windward section capable of adaptively changing does not need an additional power supply device, can achieve the adaptive change of the windward area, has the effect of suppressing galloping, has a good effect of suppressing the galloping of the transmission line, has a simple structure, is low in manufacturing cost, is convenient to install and detach, and is suitable for split conductors in different forms and lines with different distances.
2. The galloping suppression device has small volume and light weight under the condition of no galloping wind speed, does not bring extra bearing capacity to the line, and does not increase the resistance born by the whole power transmission line; under the condition of the galloping wind speed, the baffle can be opened under the most stress, the stress state of the lead is changed, and the effect of inhibiting the galloping is achieved.
Drawings
Fig. 1 is a schematic structural diagram of a transmission line galloping suppression device with a windward section adaptively changed according to embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a transmission line galloping suppression device with a windward section adaptively changed according to embodiment 2 of the present invention;
1-baffle I, 2-baffle II, 3-wire, 4-baffle II.
Detailed Description
The invention will be further illustrated with reference to a few specific examples.
Example 1
Referring to fig. 1, a device for suppressing the galloping of a power transmission line with a self-adaptive change of a windward section comprises a first baffle plate 1 which is respectively fixed with two wires 3, wherein one side edge of the first baffle plate 1 is connected with a second baffle plate 2 through a first torsion spring, an included angle between the first baffle plate 1 and the second baffle plate 2 in a natural state is 10-20 degrees, the wires can gallop at a certain wind speed, the second baffle plate 2 is slowly opened by thrust, after the wind speed is reduced, the wires stop galloping, the second baffle plate 2 can be slowly restored to an original state by being driven by the first torsion spring.
Furthermore, the width of the first baffle plate 1 is equal to the distance between the two wires 3, so that the fixing is convenient.
Further, the first torsion spring adopts 65, 70 and 85 steel, has high strength, hardness and yield ratio, is convenient to control the second baffle, and has good effect of opening and recovering the second baffle to the original state.
Furthermore, the width of the second baffle plate 2 is equal to that of the first baffle plate 1, so that the second baffle plate is convenient to connect and fix.
Further, the area of the second baffle plate is 2/3-1 times that of the first baffle plate, and the effect of preventing the wire from waving is good.
Further, the thickness of the first baffle and the second baffle is 5-10mm, and under the condition of the thickness, the optimal matching of the whole strength and the quality of the baffles is achieved, namely, the higher strength is achieved under the condition that the baffles are as light as possible.
Furthermore, the first baffle plate and the second baffle plate are made of polytetrafluoroethylene or thermoplastic polyester, have light weight and corrosion resistance, and are suitable for being used under various outdoor environmental conditions.
Example 2
Referring to fig. 2, the device for suppressing the galloping of the power transmission line with the self-adaptive change of the windward section comprises a first baffle plate 1 which is respectively fixed with two wires 3, wherein one side edge of the first baffle plate 1 is connected with a second baffle plate 2 through a torsion spring, an included angle between the first baffle plate 1 and the second baffle plate 2 in a natural state is 10-20 degrees, the lower end of the second baffle plate 2 is also connected with a third baffle plate 4 through a torsion spring, an included angle between the third baffle plate 4 and the second baffle plate 2 in a natural state is 20-30 degrees, the device is suitable for the conditions of unidirectional wind and bidirectional wind, especially suitable for the conditions of bidirectional wind, taking the case of bidirectional wind blowing as an example, the wires can gallop at a certain wind speed, the second baffle plate 2 and the third baffle plate 4 are respectively and slowly opened by thrust in different directions, and after the wind speed is reduced, the wires stop galloping, the second baffle plate 2 and the third baffle plate 4 are driven by the torsion spring to slowly recover to an original state.
Furthermore, the width of the first baffle plate 1 is equal to the distance between the two wires 3, so that the fixing is convenient.
Further, the first torsion spring and the second torsion spring are made of 65, 70 and 85 steel, have high strength, hardness and yield ratio, and are convenient to control the second baffle plate and the third baffle plate, and the second baffle plate and the third baffle plate are opened and restored to the original state, so that the effect is good.
Furthermore, the widths of the second baffle plate 2 and the third baffle plate 4 are equal to those of the first baffle plate, so that the connection and the fixation are convenient.
Further, the area of the second baffle plate 2 and the area of the third baffle plate 4 are 2/3-1 times that of the first baffle plate 1.
Further, the thicknesses of the first baffle, the second baffle and the third baffle are all 5-10mm, and under the condition of the thickness, the optimal matching of the whole strength and the quality of the baffles is achieved, namely, under the condition that the baffles are as light as possible, the higher strength is achieved.
Furthermore, the first baffle, the second baffle and the third baffle are made of polytetrafluoroethylene or thermoplastic polyester, have light weight and corrosion resistance, and are suitable for being used under various outdoor environmental conditions.
Example 3
An installation method of the transmission line galloping suppression device with the windward section adaptively changed according to embodiment 1, comprising the following steps:
the wire passes through the torsion spring, the first baffle and the second baffle are fixed on two extension edges of the torsion spring by adopting glue, one opposite edge of the first baffle and the first torsion spring is fixed on the other wire by the second torsion spring, the second torsion spring comprises one extension edge and is fixed with the first baffle by adopting glue, the glue is fixed to avoid damage to the baffle caused by welding or punching, the wire and the torsion spring are filled and separated by a rubber pad, the wire is prevented from wearing, and a rubber plug is respectively arranged on the wires at two ends of the torsion spring to prevent the torsion spring from moving on the wire;
the included angle between the second baffle plate and the baffle plate after installation is 10-20 degrees; for the double-split conductor, two sides of a first baffle are respectively fixed on the two sub conductors; for the multi-split conductor, two sub-conductors in the horizontal plane are selected as two sides for installing the torsion spring and fixing the baffle I.
Example 4
An installation method of the transmission line galloping suppression device with the windward section adaptively changed according to embodiment 2, comprising the following steps:
(1) The wire passes through the torsion spring, the first baffle and the second baffle are fixed on two extension edges of the torsion spring by adopting glue, one opposite edge of the first baffle and the first torsion spring is fixed on the other wire by the second torsion spring, the second torsion spring comprises one extension edge and is fixed with the first baffle by adopting glue, the glue is fixed to avoid damage to the baffle caused by welding or punching, the wire and the torsion spring are filled and separated by a rubber pad, the wire is prevented from wearing, and a rubber plug is respectively arranged on the wires at two ends of the torsion spring to prevent the torsion spring from moving on the wire;
the included angle between the second baffle plate and the baffle plate after installation is 10-20 degrees; for the double-split conductor, two sides of a first baffle are respectively fixed on the two sub conductors; for the multi-split conductor, two sub-conductors in the horizontal plane are selected as two sides for installing the torsion spring and fixing the baffle I.
(2) The lower end of the second baffle is connected with the third baffle through a third torsion spring, the third baffle and the second baffle are fixed on two extension edges of the third torsion spring through glue, and an included angle preset between the third baffle and the second baffle is 20-30 degrees.
Example 5
An application of a transmission line galloping suppression device with a windward section adaptively changed in suppressing the galloping suppression of a transmission line, comprising the following steps:
(1) When the wind speed reaches the galloping wind speed, under the action force of wind, the second baffle (in the case of the third baffle, the second baffle and the third baffle are similar to each other), the thrust of wind is slowly opened, when the maximum included angle of the design of the spring is reached, the second baffle (the second baffle and the third baffle) stops opening, the windward area can change the stress state of the wire to the greatest extent, the galloping of the wire is inhibited most effectively, and meanwhile, the tension of the whole line is ensured to be smaller than the tension value of the design of the component, so that the harmful influence on the line is avoided;
(2) When the wind speed is reduced, the lead stops waving, the stress of the second baffle (the second baffle and the third baffle) is reduced, and the torsion spring gradually closes the second baffle (the second baffle and the third baffle) due to the self restoring force, namely, the second baffle (the second baffle and the third baffle) automatically returns to the original position.
Finally, it is noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and that other modifications and equivalents thereof by those skilled in the art should be included in the scope of the claims of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (7)
1. The device for suppressing the galloping of the power transmission line with the windward section capable of adaptively changing is characterized by comprising a first baffle plate fixed with two wires respectively, wherein one side edge of the first baffle plate is connected with a second baffle plate through a torsion spring I, and an included angle between the first baffle plate and the second baffle plate in a natural state is 10-20 degrees;
the width of the first baffle is equal to the distance between the two wires;
the lower end of the second baffle is also connected with the third baffle through a third torsion spring;
the included angle between the third baffle and the second baffle is 20-30 degrees in the natural state.
2. The transmission line galloping suppression device with the windward section adaptively changed according to claim 1, wherein the widths of the second baffle plate and the third baffle plate are equal to those of the first baffle plate, and the areas of the second baffle plate and the third baffle plate are 2/3-1 times that of the first baffle plate.
3. The transmission line galloping suppression device with the windward section adaptively changed according to claim 2, wherein the thicknesses of the first baffle, the second baffle and the third baffle are all 5-10mm.
4. A method of installing a transmission line galloping suppression device of any one of claims 1 to 3 having an adaptively varying windward cross section, comprising the steps of:
the wire passes through the first torsion spring, the first baffle and the second baffle are fixed on two extension edges of the first torsion spring by adopting glue, one opposite edge of the first baffle and the first torsion spring is fixed on the other wire, the wire and the first torsion spring are filled and separated by a rubber pad, and a rubber plug is respectively arranged on the wires at two ends of the first torsion spring.
5. The method for installing a device for suppressing the galloping of a power transmission line with a self-adaptive change of a windward section according to claim 4, wherein one side of the baffle plate I opposite to the torsional spring I is fixed on the other wire through the torsional spring II, the torsional spring II comprises an extension side and is fixed with the baffle plate I by glue, the wire and the torsional spring II are filled and separated by rubber pads, and the wires at two ends of the torsional spring II are respectively provided with a rubber plug.
6. The method of installing a transmission line galloping suppression device with an adaptively varying windward cross section according to claim 4 or 5, further comprising: the lower end of the second baffle is connected with the third baffle through a third torsion spring, and the third baffle and the second baffle are fixed on two extension edges of the third torsion spring by glue.
7. Use of a transmission line galloping suppression device according to any one of claims 1 to 3 for transmission line galloping suppression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111671564.4A CN114243612B (en) | 2021-12-31 | 2021-12-31 | Power transmission line galloping suppression device with windward cross section adaptively changed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111671564.4A CN114243612B (en) | 2021-12-31 | 2021-12-31 | Power transmission line galloping suppression device with windward cross section adaptively changed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114243612A CN114243612A (en) | 2022-03-25 |
| CN114243612B true CN114243612B (en) | 2023-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111671564.4A Active CN114243612B (en) | 2021-12-31 | 2021-12-31 | Power transmission line galloping suppression device with windward cross section adaptively changed |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2157583C1 (en) * | 1999-09-28 | 2000-10-10 | Ульяновский государственный технический университет | Brace for conductors of overhead power transmission lines |
| KR101029315B1 (en) * | 2010-11-01 | 2011-04-13 | 영인기술(주) | Decrease apparatus of wind noise for power lines |
| CN103887750A (en) * | 2014-04-17 | 2014-06-25 | 国家电网公司 | Torsional-vibration-restraining gallop-preventing device |
| CN204230837U (en) * | 2014-11-26 | 2015-03-25 | 国家电网公司 | A kind of multiple fission conductor wind damping anti-galloping device |
| CN107425496A (en) * | 2017-06-06 | 2017-12-01 | 国网河南省电力公司电力科学研究院 | A kind of more division ice coating wire windage suppression dance loop devices |
| CN111130040A (en) * | 2019-12-05 | 2020-05-08 | 同济大学 | Composite spacing ring-nutation damper for controlling integral galloping of lead |
-
2021
- 2021-12-31 CN CN202111671564.4A patent/CN114243612B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2157583C1 (en) * | 1999-09-28 | 2000-10-10 | Ульяновский государственный технический университет | Brace for conductors of overhead power transmission lines |
| KR101029315B1 (en) * | 2010-11-01 | 2011-04-13 | 영인기술(주) | Decrease apparatus of wind noise for power lines |
| CN103887750A (en) * | 2014-04-17 | 2014-06-25 | 国家电网公司 | Torsional-vibration-restraining gallop-preventing device |
| CN204230837U (en) * | 2014-11-26 | 2015-03-25 | 国家电网公司 | A kind of multiple fission conductor wind damping anti-galloping device |
| CN107425496A (en) * | 2017-06-06 | 2017-12-01 | 国网河南省电力公司电力科学研究院 | A kind of more division ice coating wire windage suppression dance loop devices |
| CN111130040A (en) * | 2019-12-05 | 2020-05-08 | 同济大学 | Composite spacing ring-nutation damper for controlling integral galloping of lead |
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| Publication number | Publication date |
|---|---|
| CN114243612A (en) | 2022-03-25 |
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