CN107895925B - Comprehensive anti-galloping method combining limiting anti-galloping device and phase-to-ground spacer - Google Patents
Comprehensive anti-galloping method combining limiting anti-galloping device and phase-to-ground spacer Download PDFInfo
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- CN107895925B CN107895925B CN201711201311.4A CN201711201311A CN107895925B CN 107895925 B CN107895925 B CN 107895925B CN 201711201311 A CN201711201311 A CN 201711201311A CN 107895925 B CN107895925 B CN 107895925B
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- 125000006850 spacer group Chemical group 0.000 title claims abstract description 76
- 230000000670 limiting effect Effects 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 60
- 238000009434 installation Methods 0.000 claims abstract description 25
- 239000004020 conductor Substances 0.000 claims description 15
- 230000001133 acceleration Effects 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000006073 displacement reaction Methods 0.000 description 22
- 230000002829 reductive effect Effects 0.000 description 6
- 230000016507 interphase Effects 0.000 description 3
- 230000000452 restraining effect Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000010183 spectrum analysis Methods 0.000 description 3
- 239000012212 insulator Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
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- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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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
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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
- H02G7/125—Damping spacers
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Abstract
A comprehensive anti-galloping method combining a limiting anti-galloping device and a phase-to-ground spacer comprises the following steps: A. determining the hanging point position of the ground spacer according to the span of the power transmission line; B. determining the installation direction of the phase spacer according to the statistical result of the main wind direction of the area where the power transmission line is located; C. determining the installation position of the limiting anti-galloping device according to the installation positions of the span and the phase spacer; D. fixing the limiting anti-galloping device, and adjusting the length of a stay wire of the limiting anti-galloping device to enable the stay wire to be in a loose state; the length of the stay wire of the phase-to-phase spacer is adjusted to apply the pre-tightening force of 3KN to 5 KN. The invention can play a good anti-galloping effect, ensure the operation safety of the power transmission line and reduce the economic loss caused by line galloping.
Description
Technical Field
The invention belongs to the technical field of operation and maintenance of power transmission lines of power systems, relates to the technical field of comprehensive prevention and control of galloping of overhead power transmission lines, and particularly relates to a comprehensive anti-galloping method applied to combination of a limiting type anti-galloping device and a phase-to-ground spacer of an extra-high voltage power transmission line.
Background
With the development of power transmission lines and the wide construction of extra-high voltage and extra-high voltage lines in recent decades, the probability of accidents of the power transmission lines is gradually increased, and the galloping is low-frequency large-amplitude self-excited vibration, and the vertical motion accounts for the main motion in the galloping. The harm caused by galloping is also quite large, short circuit between lines and short circuit between grounds can be caused, the caused loss comprises electric arc burning, strand breakage, line breakage, pole tower damage, tower falling, vibration damper and spacer damage, and if galloping can not be effectively inhibited, serious economic loss can be brought to the country.
The transmission line also can adopt the split conductor of different split numbers along with the promotion of voltage class, and the split conductor takes place to wave more easily, so need corresponding anti-galloping device to extra-high voltage and extra-high voltage line urgent research, current interphase spacer can reduce the degree of galloping to a certain extent, but the interphase spacer also can aggravate the shearing of wire and the wearing and tearing of gold utensil, still can take place interphase flashover when serious, destroys electrical properties.
Disclosure of Invention
The invention aims to provide a comprehensive anti-galloping method combining a limiting anti-galloping device and a phase-to-ground spacer to achieve the anti-galloping effect. The spacing type anti-galloping device is combined with the spacing rod, and the spacing type anti-galloping device play a role to reduce tension of the conductor during galloping so as to achieve the effect of restraining or preventing galloping.
In order to achieve the purpose, the invention adopts the technical scheme that:
a comprehensive anti-galloping method combining a limiting anti-galloping device and a phase-to-ground spacer is characterized by comprising the following steps:
step 4, fixing the limiting anti-galloping device, and adjusting the length of a stay wire of the limiting anti-galloping device to enable the stay wire to be in a loose state; adjusting the length of the phase-ground spacer stay wire and applying a pre-tightening force of 3-5 KN.
The invention further comprises the following preferred embodiments:
in step 1, when the span of the power transmission line is less than or equal to 300 meters, two groups of phase-ground spacers need to be arranged; when the span of the power transmission line is more than 300 meters and less than or equal to 600 meters, three groups of phase-ground spacing rods are arranged; when the span is larger than 600 meters and less than or equal to 800 meters, four groups of phase-to-ground spacing rods are arranged; each group of phase-to-ground spacers comprises three phase-to-ground spacers, each phase-to-ground spacer is hung between the corresponding phase line and the ground anchor, and hanging points of each group of phase-to-ground spacers in the horizontal direction of the power transmission line are the same in position.
In step 1, when the span of the power transmission line is less than or equal to 300 meters, hanging point positions of each group of phase-to-ground spacers in the horizontal direction of the power transmission line are arranged at 1/3 and 2/3 of the span of the power transmission line;
when the span of the power transmission line is more than 300 meters and less than or equal to 600 meters, hanging points of each group of phase-to-ground spacers in the horizontal direction of the power transmission line are positioned at 2/9, 1/2 and 7/9 of the span of the power transmission line;
when the span is larger than 600 meters and smaller than or equal to 800 meters, the hanging point position of each group of phase-to-ground spacers in the horizontal direction of the transmission line is at 1/9, 1/3, 2/3 and 8/9 of the span of the transmission line;
in step 2, according to the main wind direction of the area where the power transmission line is located, the installation measure of the phase spacers is determined to be the installation in the upwind direction, and the installation angle, namely the included angle formed by the stay wires of the phase spacers and the ground, is determined to be an acute angle, wherein the main wind direction is the wind direction of the power transmission line in the area in the season where the power transmission line is easy to swing.
The installation angle is between 40 and 80 degrees.
In step 3, corresponding to different spans of the power transmission line, the number of sets of the limiting anti-galloping device to be set is equal to the number of sets of phase-to-ground spacers correspondingly set by the span minus 1, that is: when the span of the power transmission line is less than or equal to 300 meters, a group of limiting anti-galloping devices are required to be arranged; when the span is more than 300 meters and less than or equal to 600 meters, two groups of limiting anti-galloping devices are required to be arranged; when the span is more than 600 meters and less than or equal to 800 meters, three groups of limiting anti-galloping devices are required to be arranged; wherein, each group of spacing formula anti-galloping device includes three spacing formula anti-galloping devices, and the hanging point position of each group of spacing formula anti-galloping device on transmission line's horizontal direction is the same.
In step 3, the spacing type anti-galloping device on each phase of lead and the phase-to-ground spacer are arranged at intervals, namely, each spacing type anti-galloping device is installed between two adjacent phase-to-ground spacers of the lead.
In step 3, when the span of the power transmission line is less than or equal to 300 meters, selecting the middle point of the span of the three-phase lead to vertically install three limiting anti-galloping devices; when the span of the power transmission line is more than 300 meters and less than or equal to 600 meters, six limiting anti-galloping devices are vertically installed at 1/3 and 2/3 of the span of the three-phase lead; when the span is greater than 600 meters and less than or equal to 800 meters, nine limit type anti-galloping devices are vertically installed at 2/9, 1/2 and 7/9 of the span of the three-phase lead;
in step 3, an acceleration sensor for sensing the conductor galloping speed is installed in the limiting anti-galloping device.
In step 4, after the acceleration sensor in the limiting anti-galloping device senses that the acceleration of the upward movement of the lead exceeds a set threshold value, the limiting anti-galloping device automatically applies pre-tightening force of 3 KN-5 KN.
The invention can effectively inhibit galloping by installing the phase-to-ground spacing rod and the limiting anti-galloping device on the power transmission line, and meanwhile, because the limiting anti-galloping device is provided with the sensor, the stay wire is in a loose state when no galloping occurs, the pulling force on the line can be well reduced, and the damage on the line is very small. The maximum displacement position is found out through modal analysis, the vertical displacement of the galloping is directly limited, and the maintenance is convenient.
Because the difference of mounted position and quantity, the cooperation is mutually the conductor spacer can effectual suppression wire the first three-order galloping, and the conductor spacer can restrain horizontal displacement and vertical displacement mutually, and spacing formula anti-galloping device can restrain vertical displacement, so can have fine suppression effect to multistage compound galloping, guarantee the safe operation of circuit, reduce economic loss.
Drawings
FIG. 1 is a schematic view of the installation of a spacing type anti-galloping device and a phase-to-ground spacer in the present invention;
FIG. 2 is a vertical displacement plot of the mid-point of the span before the anti-galloping device is installed;
FIG. 3 is a vertical displacement view of the mid-point of the span after installation of the spacing anti-galloping device and the phase spacer;
FIG. 4 is a drawing of the tension of the wire before the anti-galloping device is installed;
fig. 5 is a drawing of the tension of the wire after installation of the spacing anti-galloping device and the phase-to-ground spacer.
Wherein, 1 is the wire, 2 is insulator chain, 3 is the earth anchor, 4 is spacing formula anti-galloping device, 5 is the phase place conductor spacer.
Detailed Description
The technical scheme of the invention is further described in detail by combining the drawings and the specific embodiments in the specification.
The invention discloses a comprehensive anti-galloping method combining a limiting anti-galloping device and a phase-to-ground spacer, which comprises the following specific steps of:
step 1: determining the number of ground spacers and the positions of hanging points according to the span of the power transmission line
When the span is less than 300 m, 1/3 and 2/3 of the span are selected as hanging point positions of the phase spacer, and the hanging point of the limiting anti-galloping device is arranged at the middle point of the span; when the span is larger than 300 meters and smaller than 600 meters, 2/9, 1/2 and 7/9 of the span are selected as hanging point positions of the phase spacer, and the hanging point positions of the limiting type anti-galloping device are set to 1/3 and 2/3 of the span. When the span is larger than 600 meters and smaller than or equal to 800 meters, 1/9, 1/3, 2/3 and 8/9 of the span are selected as hanging point positions of the phase spacer, and the hanging point positions of the limiting type anti-galloping device are set to 2/9, 1/2 and 7/9 of the span. In experimental statistics, the amplitude of the galloping of the power transmission line in the vertical and horizontal directions can be increased along with the increase of the span, the galloping is a small-span line when the span is less than 300 meters, according to the result of modal analysis, the frequency of a single half wave with a peak value close to the in-plane exists in the frequency spectrum of the vertical displacement and the horizontal displacement, the frequency spectrum analysis is also carried out on the torsion angle, the natural frequency with a peak value close to the torsion single half wave exists in the frequency spectrum, and then the galloping of the wire in the small-span line can be considered to be mainly in the galloping form of the single half wave in the in-plane; when the span is larger than 300 and smaller than 600 meters, the large-span line is used, the vertical displacement and the horizontal displacement are subjected to spectrum analysis, the fact that the natural frequency with the peak value close to the single half-wave in the plane still exists in the spectrum is found, the fact that the natural frequency with the peak value close to the three-order torsional mode of the wire exists in the spectrum analysis of the torsional angle is found, and the fact that the step-compounding galloping exists in the large-span power transmission line can be considered. Therefore, according to the results of modal analysis, the invention selects the hanging point positions of the phase spacing rods at 1/3 and 2/3 of the span when the span is less than 300 m, selects the hanging point positions of the phase spacing rods at 1/2 and 7/9 of the span when the span is more than 300 m and less than 600 m, and selects the hanging point positions of the phase spacing rods at 1/9, 1/3, 2/3 and 7/9 of the span when the span is more than 600 m and less than 800 m, thus having better effect on inhibiting multi-step galloping.
Step 2: and carrying out statistical investigation on the dominant wind direction of the area where the power transmission line is located to obtain the dominant wind direction of the power transmission line in the season in which the power transmission line is easy to wave, and then selecting the installation direction and the installation angle of the phase spacer according to the dominant wind direction. Because the upwind direction installation phase-to-ground spacing rod can play a role of restraining at two ends with the limiting type anti-galloping device, the upwind direction installation phase-to-ground spacing rod is selected under most conditions; when the wind attack angle is between 40 and 120 degrees, most of the lift coefficient slopes of the conductors are negative, so that the conductors can swing in the wind attack angle range, and the installation angle of the phase spacing rods is between 40 and 80 degrees according to the angle.
And step 3: after the phase-to-ground spacing rods are installed, installing the limiting anti-galloping device according to different spans, and when the span is less than or equal to 300 m, selecting the limiting anti-galloping device to be vertically installed at the midpoint of the span because the midpoint of the span is the maximum displacement; when the span is more than 300 meters and less than or equal to 600 meters, installing limiting type anti-galloping devices at 1/3 and 2/3 of the span according to the modal analysis result; when the span is larger than 600 meters and less than or equal to 800 meters, limit type anti-galloping devices are installed at the spans 2/9, 1/2 and 7/9.
And 4, step 4: and (2) determining the hanging point position of the phase-to-ground spacer according to the gear distance in the step (1) and fixing the phase-to-ground spacer, wherein three-phase conductors share a primary ground anchor as shown in fig. 1, and applying pre-tightening force of 3-5 KN after the wire pulling angle is adjusted, so that the pre-tightening force at different temperatures is converted into the pre-tightening force at 0 ℃ due to the high probability of galloping after the conductors are coated with ice, so as to ensure good anti-galloping effect. According to spacing formula anti-galloping device hanging point position in step 3, install spacing formula anti-galloping device in the wire below perpendicularly, it is the lax state to adjust to act as go-between, spacing formula anti-galloping device is a mechanical anti-galloping device, be connected with the wire through acting as go-between and sub-spacer, spacing formula anti-galloping device internally mounted has acceleration sensor, after the acceleration of wire upward movement exceeded certain numerical value, spacing formula anti-galloping device will apply 3KN ~ 5 KN's pretightning force voluntarily, spacing formula anti-galloping device will contract automatically and act as go-between when the wire downward movement in order to play the effect of restraining the galloping.
The spacing type anti-galloping device is combined with the phase-to-ground spacing rod, the phase-to-ground spacing rod and the spacing type anti-galloping device are effectively combined, the advantages of the spacing type anti-galloping device and the spacing type anti-galloping device are fully exerted, the spacing type anti-galloping device can effectively limit vertical displacement of the lead, the phase-to-ground spacing rod can effectively limit horizontal displacement and vertical displacement of the lead, the combination of the spacing type anti-galloping device and the spacing type anti-galloping device can inhibit torsional displacement of the lead, and therefore the combination of the spacing type anti-gallo.
The comprehensive anti-galloping method combining the limiting type anti-galloping device and the phase-to-ground spacer is verified by specific experiments. The technical scheme of the invention is implemented on a certain transmission line for field verification, the experimental line is shown in figure 1, the line span is 536 meters, the height difference is avoided, the wind attack angle is 90 degrees, in figure 1, 1 is a lead, 2 is an insulator string, 3 is a ground anchor, 4 is a limiting type anti-galloping device, and 5 is a phase-ground spacer. According to the method provided by the invention, phase-to-ground spacers are arranged at 1/3 and 2/3, the wire drawing angle of the phase-to-ground spacers is 52 degrees, a limiting type anti-galloping device is arranged at a span 1/2, conductor galloping is simulated through the same wind excitation, and displacement response and tension change of front and back galloping of the installed anti-galloping device are obtained, as shown in fig. 2-5, fig. 2 is the vertical displacement of the span midpoint when the anti-galloping device is not installed, and fig. 3 is the vertical displacement of the span midpoint after the limiting type anti-galloping device is combined with the phase-to-ground spacers, so that the vertical displacement of the span midpoint after the limiting type anti-galloping device is combined with the phase-to-ground spacers is greatly reduced, the vertical displacement is approximately reduced by 89.7%, and the peak value of the vertical displacement is approximately reduced by 90.8%; fig. 4 shows the tension change of the lead when the anti-galloping device is not installed, and fig. 5 shows the tension change of the lead after the limiting type anti-galloping device is combined with the phase-to-ground spacer, so that the galloping tension of the lead is reduced by about 40% after the limiting type anti-galloping device is installed with the phase-to-ground spacer, and the peak value of the tension is reduced by 79.6%. The comparison of the galloping amplitude and the wire tension proves that the galloping is effectively inhibited under the galloping prevention scheme of the invention.
The above embodiments are for understanding the method and core idea of the present invention, and it will be apparent to those skilled in the art that any possible changes or substitutions may be made without departing from the spirit of the present invention, and the scope of the present invention is covered thereby.
Claims (9)
1. A comprehensive anti-galloping method combining a limiting anti-galloping device and a phase-to-ground spacer is characterized by comprising the following steps:
step 1, determining the number of ground spacers and hanging point positions according to the span of a power transmission line;
when the span of the transmission line is less than or equal to 300 meters, two groups of phase-ground spacing rods need to be arranged; when the span of the power transmission line is more than 300 meters and less than or equal to 600 meters, three groups of phase-ground spacing rods are arranged; when the span is larger than 600 meters and smaller than 800 meters, four groups of phase-to-ground spacing rods are arranged;
step 2, looking up the main wind direction of the area where the power transmission line is located, and adopting different installation measures and installation angles for the phase-to-phase spacers according to the main wind direction data;
step 3, determining the number and the installation positions of the limiting anti-galloping devices according to the span of the power transmission line;
corresponding to different spans of the power transmission line, the number of groups of the limiting anti-galloping devices to be arranged is equal to the number of groups of phase-to-ground spacers correspondingly arranged to the spans minus 1, the phase-to-ground spacers and the limiting anti-galloping devices are arranged at intervals, and the limiting anti-galloping devices are vertically arranged below the wires;
step 4, fixing a limiting anti-galloping device, installing an acceleration sensor for sensing conductor galloping speed in the limiting anti-galloping device, and adjusting the length of a pull wire of the limiting anti-galloping device to enable the pull wire to be in a loose state; the length of the stay wire of the phase-to-phase spacer is adjusted to apply the pre-tightening force of 3KN to 5 KN.
2. The integrated anti-galloping method combining the limit type anti-galloping device and the phase-to-ground spacer according to claim 1, wherein:
in step 1, each group of phase-to-ground spacers comprises three phase-to-ground spacers, each phase-to-ground spacer is hung between a corresponding phase line and a ground anchor, and hanging points of each group of phase-to-ground spacers in the horizontal direction of the power transmission line are the same in position.
3. The integrated anti-galloping method combining the limit type anti-galloping device and the phase-to-ground spacer according to claim 2, wherein:
in step 1, when the span of the power transmission line is less than or equal to 300 meters, hanging point positions of each group of phase-to-ground spacers in the horizontal direction of the power transmission line are arranged at 1/3 and 2/3 of the span of the power transmission line;
when the span of the power transmission line is more than 300 meters and less than or equal to 600 meters, hanging points of each group of phase-to-ground spacers in the horizontal direction of the power transmission line are positioned at 2/9, 1/2 and 7/9 of the span of the power transmission line;
and when the span is larger than 600 meters and smaller than 800 meters, the hanging point position of each group of phase-to-ground spacers in the horizontal direction of the transmission line is at 1/9, 1/3, 2/3 and 8/9 of the span of the transmission line.
4. The integrated anti-galloping method combining the limit type anti-galloping device and the phase-to-ground spacer according to claim 3, wherein:
in step 2, according to the main wind direction of the area where the power transmission line is located, the installation measure of the phase spacers is determined to be the installation in the upwind direction, and the installation angle, namely the included angle formed by the stay wires of the phase spacers and the ground, is determined to be an acute angle, wherein the main wind direction is the wind direction of the power transmission line in the area in the season where the power transmission line is easy to swing.
5. The integrated anti-galloping method combining the limit type anti-galloping device and the phase-to-ground spacer according to claim 4, wherein:
the installation angle is between 40 and 80 degrees.
6. The integrated anti-galloping method combining the spacing type anti-galloping device and the phase-to-ground spacer according to claim 3 or 4, wherein:
in step 3, each group of the limiting anti-galloping devices comprises three limiting anti-galloping devices, namely: when the span of the power transmission line is less than or equal to 300 meters, a group of limiting anti-galloping devices are required to be arranged; when the span is more than 300 meters and less than or equal to 600 meters, two groups of limiting anti-galloping devices are required to be arranged; when the span is greater than 600 meters and less than or equal to 800 meters, three groups of limiting anti-galloping devices need to be arranged.
7. The integrated anti-galloping method combining the limit type anti-galloping device and the phase-to-ground spacer according to claim 6, wherein:
spacing formula anti-galloping device and looks ground conductor spacer interval setting on every looks wire, and each spacing formula anti-galloping device is installed between this wire adjacent two looks ground conductor spacers promptly.
8. The integrated anti-galloping method combining the spacing type anti-galloping device and the phase-to-ground spacer according to claim 3 or 7, wherein:
when the span of the power transmission line is less than or equal to 300 meters, selecting the middle point of the span of each phase of wire to vertically install a group of limiting anti-galloping devices; when the span of the power transmission line is more than 300 meters and less than or equal to 600 meters, two groups of limiting anti-galloping devices are installed at 1/3 and 2/3 of the span of each phase of lead; when the span is larger than 600 meters and smaller than or equal to 800 meters, three groups of limiting type anti-galloping devices are installed at 2/9, 1/2 and 7/9 of the span of each phase of lead.
9. A comprehensive anti-galloping method combining a spacing anti-galloping device and a ground spacer according to any one of claims 1 to 4 or 7, wherein:
when the acceleration sensor in the limiting anti-galloping device senses that the acceleration of the upward movement of the lead exceeds a set threshold value, the limiting anti-galloping device automatically applies pre-tightening force of 3-5 KN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711201311.4A CN107895925B (en) | 2017-11-27 | 2017-11-27 | Comprehensive anti-galloping method combining limiting anti-galloping device and phase-to-ground spacer |
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| CN201711201311.4A CN107895925B (en) | 2017-11-27 | 2017-11-27 | Comprehensive anti-galloping method combining limiting anti-galloping device and phase-to-ground spacer |
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| CN107895925B true CN107895925B (en) | 2020-08-28 |
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| CN108400567B (en) * | 2018-06-06 | 2024-03-19 | 贵州电网有限责任公司 | System for restraining conductor from waving of power transmission line and control method thereof |
| CN111668794A (en) * | 2020-06-29 | 2020-09-15 | 国网河南省电力公司电力科学研究院 | Conductor spacer and transmission of electricity system suitable for transmission line ice removal jump prevention and cure |
| CN114336485B (en) * | 2021-12-31 | 2024-06-25 | 国网河南省电力公司电力科学研究院 | Weight anti-galloping device |
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| JP2010268637A (en) * | 2009-05-15 | 2010-11-25 | Chugoku Electric Power Co Inc:The | Branching device and branching method for aerial distribution line |
| CN103414135B (en) * | 2013-07-23 | 2016-06-01 | 国家电网公司 | A kind of anti-with waving rigidity phase conductor spacer |
| CN106711841B (en) * | 2015-11-18 | 2019-03-22 | 中国电力科学研究院 | A kind of transmission line wire substantially vibrates limit-type control method |
| CN106129944B (en) * | 2016-06-24 | 2017-11-28 | 国网河南省电力公司电力科学研究院 | A kind of horizontally disposed transmission line of electricity anti-dance approach of extra-high voltage |
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