CN106568388B - A kind of electric power line ice-covering thickness calculation method and system based on high-definition image - Google Patents
A kind of electric power line ice-covering thickness calculation method and system based on high-definition image Download PDFInfo
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- CN106568388B CN106568388B CN201610968591.0A CN201610968591A CN106568388B CN 106568388 B CN106568388 B CN 106568388B CN 201610968591 A CN201610968591 A CN 201610968591A CN 106568388 B CN106568388 B CN 106568388B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
Abstract
The present invention discloses a kind of electric power line ice-covering thickness calculation method and system based on high-definition image, step 1, obtains the realtime graphic including transmission line wire and ground wire；Step 2, the thickness ratio of conducting wire and ground wire in the realtime graphic of Same Scene is measured, tentatively judges the icing degree of ground wire；Step 3, according to the diameter specifications and actual measurement thickness ratio of transmission line wire and ground wire, ice covering thickness is obtained using modified QWERTY ice thickness computation model.Electric power line ice-covering thickness calculation method and system based on high-definition image of the invention, the perfect result of artificial sight ice, reduce artificial ice result of seeing with the error between practical icing situation, the artificial accuracy for seeing ice can be improved, provide more accurate information support for ice-melt decision.
Description
Technical field
The present invention relates to monitoring transmission line icing field more particularly to a kind of mention the transmission line of electricity based on high-definition image and cover
Ice thickness calculation method and system.
Background technique
Powerline ice-covering is the significant threat of electric power netting safe running, and serious icing will cause huge economic loss,
Therefore the monitoring and early warning work of ice-covering area powerline ice-covering snow must be carried out, icing density is eliminated in budding state, is protected
Hinder the operation of Ice Area line security.The main means that artificial sight ice is monitored as transmission line icing at present are sent out in the work of anti-icing anti-ice
Important function is waved, but in practical applications, artificial ice of seeing has following 4 aspects:
(1) live low visibility influences artificial sight ice result.Shape that northern cold gas is gone down south and southern warm moist air meets
At cold front, a large amount of ice crystal, snowflake will be formed in air, ambient enviroment visibility is caused to be decreased obviously, and exactly be transmitted electricity at this time
The transmission line icing growth rate most fast period.But due to live low visibility, anti-icing personnel are universal during manually seeing ice
Reflection can not see the icing situation of the grounded-line of shaft tower eminence clearly, can only take the mode of estimation, and Near Ground is planted because of ground
Insulation and the effect of underground heat, do not observe icing substantially, cause manually to see ice having difficulties.
(2) analog conducting wire sees ice thickness and eminence grounded-line icing is variant.Main cause is first is that analog conducting wire is in
Near Ground, weather environment are different from eminence.Air is in Near Ground flow process, by the effect of ground friction resistance,
Wind speed closer to ground is smaller；The effects of ground is due to underground heat, vegetation heat preservation simultaneously, Near Ground temperature is higher.Second is that mould
Quasi- conducting wire no current passes through, no fuel factor.The model of analog conducting wire is consistent with shaft tower wire type under normal circumstances, however runs
In conducting wire can generate fuel factor due to aliving, icing process may be the same as analog conducting wire difference.
(3) shaft tower eminence and the column foot temperature difference are larger.The artificial range for seeing ice is actually led mainly near observation tower column foot
Ground wire is in shaft tower eminence.The temperature difference of shaft tower eminence and column foot can significantly affect respective icing process.According to experience table
Bright, when cold wave passes through under normal circumstances, first there is icing in shaft tower eminence, and icing, which will occur, in column foot to postpone 1~2 day；Cold wave subsides
When, the ice-melt of shaft tower eminence deices more rapidly, and the natural ice-melt of column foot need to be by the longer time.This phenomenon is seen to artificial
Ice brings certain difficulty.
(4) it is lack of standardization to fall ice sample survey ice.Ice is seen with analog conducting wire, tower material sees ice and the modes phases such as ice thickness are estimated at scene
Than shaft tower grounded-line falls ice sample and surveys ice result accuracy with higher.But during falling ice sample survey ice, by
In the guidance for still lacking associated specifications book, there are certain mistaken ideas for measurement method.It such as will fall off ice sample still with length shot
Or the mode of weight method survey ice thickness calculates ice thickness, causes survey ice result less than normal；It is not more during directly surveying ice thickness with vernier caliper
Secondary measurement is averaged, and causes survey ice result under-represented；It falls ice sample and surveys ice not in time, after ice sample is fallen after 1~2 day
The problems such as just measuring.
Summary of the invention
It is an object of the invention to be directed to above-mentioned problems of the prior art, propose a kind of based on the defeated of high-definition image
The accuracy of ice covering thickness measurement can be improved in electric line ice covering thickness calculation method and system.
To achieve the purpose that foregoing invention, the invention is realized by the following technical scheme:
A kind of electric power line ice-covering thickness calculation method based on high-definition image, includes the following steps:
Step 1, the realtime graphic including transmission line wire and ground wire is obtained；
Step 2, the thickness ratio of conducting wire and ground wire in the realtime graphic of Same Scene is measured, tentatively judges the icing of ground wire
Degree；
Step 3, according to the diameter specifications and actual measurement thickness ratio of transmission line wire and ground wire, using modified QWERTY ice
Thick computation model obtains ice covering thickness.
Further, the step 2 further includes following steps:
Step 21, judge the icing type of the respective route of conducting wire in realtime graphic, ground wire, the icing type includes route
Non- icing, transmission line icing are rime or the mixing river in Jiangsu Province which flows into the Huangpu River of Shanghai, transmission line icing are glaze；
Step 22, when judge transmission line icing type for rime or mixing the river in Jiangsu Province which flows into the Huangpu River of Shanghai, then use mean value method, minimum value method or mistake
Burr method is filtered, smoothing processing is done to the boundary of the circuit image of the icing type；
Step 23, on the basis of above-mentioned steps 21,22, respectively measure traverse line, line image line diameters, obtained with this
Obtain icing ground region and non-ice coating wire area ratio.
Further, the calculating of the thickness relative value of the conducting wire, ground wire of the step 3 is calculated using modified QWERTY ice thickness
Model.
Further, the modified QWERTY ice thickness computation model is as follows:
Wherein, k-ρIceWith ρMarkRatio, ρIceFor the iced insulator of ground wire, is calculated and obtained according to icing type or scene, no
With the density range of icing type: glaze 0.7~0.9；Rime 0.1~0.3；Mix the river in Jiangsu Province which flows into the Huangpu River of Shanghai 0.2~0.6；Snow slush 0.2~0.4, it is single
Position g/cm3, ρMarkTake 0.9g/cm3；R is wire radius, unit mm；R is ground wire radius, unit mm；B is standard ice thickness, single
Position is mm；α is icing ground region and non-ice coating wire area ratio.
Further, the icing ground region and non-ice coating wire area ratio alpha expression formula are as follows:
Wherein B0For the icing degree for tentatively judging ground wire；R is wire radius；R is ground wire radius.
Further, the step 21 is to the judgement of transmission line icing: first the edge degree of comparing of circuit image is handled,
Whether judge edge is burr, is that then corresponding line icing is rime or the mixing river in Jiangsu Province which flows into the Huangpu River of Shanghai.
The electric power line ice-covering thickness computing system based on high-definition image that invention additionally discloses a kind of comprising have:
Image capture module, for shooting the conducting wire of transmission line of electricity and the realtime graphic of ground wire；
Image processing module does contrast processing, edge-smoothing processing for the realtime graphic to captured route；
Thickness measure module, using line map of the patterned vernier caliper measurement after image processing module optimizes
Picture；
Icing analysis module, for obtaining ice covering thickness value by modified QWERTY ice thickness computation model.
Further, described image processing module is also used to do the realtime graphic of captured route icing anticipation, works as judgement
When the edge of circuit image is burr, then edge-smoothing processing is carried out to circuit image, the edge-smoothing processing includes: average
Value method, minimum value method or filtering burr method.
Further, the graphical vernier caliper of the thickness measure module has two-stage scale, graphical vernier caliper
Slide calliper rule portion carries out multiple repairing weld to route using sampling algorithm using being manually aligned with circuit image edge, to the measurement of route
Measurement is averaged.
Further, the modified QWERTY ice thickness computation model that the icing analysis module uses is as follows:
Wherein, k-ρIceWith ρMarkRatio, ρIceFor the iced insulator of ground wire, is calculated and obtained according to icing type or scene, no
With the density range of icing type: glaze 0.7~0.9；Rime 0.1~0.3；Mix the river in Jiangsu Province which flows into the Huangpu River of Shanghai 0.2~0.6；Snow slush 0.2~0.4, it is single
Position g/cm3, ρMarkTake 0.9g/cm3；R is wire radius, unit mm；R is ground wire radius, unit mm；B is standard ice thickness, single
Position is mm；α is icing ground region and non-ice coating wire area ratio, and expression formula isB0Tentatively to judge ground
The icing degree of line.
System of the invention further includes having memory module, stores image capture module, image procossing to database form
The respective data of module and icing analysis module, for result queries and export.
A kind of beneficial effect of electric power line ice-covering thickness calculation method and system based on high-definition image of the invention is:
Perfect artificial sight ice as a result, reduce artificial ice result of seeing with the error between practical icing situation, artificial sight ice can be improved
Accuracy, provide more accurate information support for ice-melt decision.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of electric power line ice-covering thickness calculation method based on high-definition image of the invention.
Fig. 2 is the icing schematic cross-section of transmission line wire and ground wire.
Fig. 3 is a kind of structural block diagram of electric power line ice-covering thickness computing system based on high-definition image of the invention.
Fig. 4 is the structural block diagram of the image processing module of Fig. 3 embodiment of the present invention.
Fig. 5 is the structural schematic diagram of the thickness measure module of Fig. 3 embodiment of the present invention.
Fig. 6 is 5 sample detecting result schematic diagrams of the thickness measure module of Fig. 5.
Fig. 7 is the icing ground wire width measurement schematic diagram of the embodiment of the present invention.
Fig. 8 is the ice covering thickness schematic diagram using the method for the present invention and system.
Fig. 9 is the artificial result figure for seeing ice thickness.
Specific embodiment
Technical scheme in the embodiment of the invention is clearly and completely described with reference to the accompanying drawings and examples, shows
So, described embodiments are only a part of the embodiments of the present invention, rather than whole embodiments.
Result due to manually seeing ice directly affects line ice-melting decision, therefore, it is necessary to the artificial items for seeing ice acquisition
Data carry out depth excavation, and a kind of method for studying high-definition image analysis ice covering thickness based on artificial sight ice shooting is improved artificial
That sees ice manually sees ice result with the error between practical icing situation as a result, reducing, and provides more accurate letter for ice-melt decision
Breath support.The high-definition image shot when this patent is using artificial sight ice is carried out electric power line ice-covering thickness recognition methods and is studied, and grinds
Study carefully the powerline ice-covering computation model based on high-definition image, and as theoretical foundation, develops a set of based on high-definition image
The artificial accuracy for seeing ice can be improved using method and system is changed in electric power line ice-covering thickness calculation method and system.
Embodiment
As shown in Figure 1, the present invention provides a kind of electric power line ice-covering thickness calculation method based on high-definition image, figure is utilized
As processing technique completes icing land boundary and non-icing land side in the artificial high definition route photo for seeing ice shooting
The physical data on boundary acquires, and in conjunction with transmission line wire during cold wave and ground wire icing characteristic, passes through correlation technique and modified
Standard ice thickness computation model, the standard ice thickness for completing icing route calculate, and the method for the present invention specifically comprises the following steps:
Step 1, the realtime graphic including transmission line wire and ground wire is obtained；
Step 2, the thickness ratio of conducting wire and ground wire in the realtime graphic of Same Scene is measured, tentatively judges the icing of ground wire
Degree；
Step 3, according to the diameter specifications and actual measurement thickness ratio of transmission line wire and ground wire, using modified QWERTY ice
Thick computation model obtains ice covering thickness.
Specific implementation as above-mentioned steps is as follows.
Step 1 using being installed in the high definition camera device of power transmission tower frame or ground fixed station, by the conducting wire of transmission line of electricity and
Ground wire beats in same view-finder, to guarantee that conducting wire in realtime graphic and ground wire figure ratio are consistent；Due to conducting wire transmission capacity
Greatly, there is the non-icing of conducting wire or icing degree is very light often than more serious in fever, and ground wire icing very serious situation, passes through
The diameter for comparing Same Scene lower wire and ground wire, can tentatively judge the icing degree of ground wire；
Step 2 includes the following steps:
Step 21, judge the icing type of the respective route of conducting wire in realtime graphic, ground wire, the icing type includes route
Non- icing, transmission line icing are rime or the mixing river in Jiangsu Province which flows into the Huangpu River of Shanghai, transmission line icing are glaze；In above-mentioned icing type, the non-icing of route, route cover
Ice is glaze, corresponding circuit image edge smoothing or smoother；And transmission line icing is rime or the mixing river in Jiangsu Province which flows into the Huangpu River of Shanghai, corresponding route
Image boundary has a large amount of burrs；
Step 22, when judge transmission line icing type for rime or mixing the river in Jiangsu Province which flows into the Huangpu River of Shanghai, then use mean value method, minimum value method or mistake
Burr method is filtered, smoothing processing is done to the boundary of the circuit image of the icing type；
Step 23, on the basis of above-mentioned steps 21,22, respectively measure traverse line, line image line diameters, obtained with this
Obtain icing ground region and non-ice coating wire area ratio.
It is conductor structure referring to Fig. 2, D1, D2 is ground wire icing structure, the modified QWERTY ice thickness meter that the step 3 uses
It is as follows to calculate model:
Wherein, k-ρIceWith ρMarkRatio, ρIceFor the iced insulator of ground wire, is calculated and obtained according to icing type or scene, no
With the density range of icing type: glaze 0.7~0.9；Rime 0.1~0.3；Mix the river in Jiangsu Province which flows into the Huangpu River of Shanghai 0.2~0.6；Snow slush 0.2~0.4, it is single
Position g/cm3, ρMarkTake 0.9g/cm3；R is wire radius, unit mm；R is ground wire radius, unit mm；B is standard ice thickness, single
Position is mm；α is icing ground region and non-ice coating wire area ratio, and expression formula isB0Tentatively to judge ground
The icing degree of line.
Referring to Fig. 3 to Fig. 5, the electric power line ice-covering thickness computing system based on high-definition image that invention additionally discloses a kind of,
Include following module using the above method:
Image capture module 1, for shooting the conducting wire of transmission line of electricity and the realtime graphic of ground wire, wherein at conducting wire and ground wire
In in same viewfinder range；
Image processing module 2 does contrast processing, edge-smoothing processing for the realtime graphic to captured route；
Thickness measure module 3, using line map of the patterned vernier caliper measurement after image processing module optimizes
Picture；
Icing analysis module 4, for obtaining ice covering thickness value by modified QWERTY ice thickness computation model.
The modified QWERTY ice thickness computation model that the icing analysis module 4 uses is as follows:
Wherein, k-ρIceWith ρMarkRatio, ρIceFor the iced insulator of ground wire, is calculated and obtained according to icing type or scene, no
With the density range of icing type: glaze 0.7~0.9；Rime 0.1~0.3；Mix the river in Jiangsu Province which flows into the Huangpu River of Shanghai 0.2~0.6；Snow slush 0.2~0.4, it is single
Position g/cm3, ρMarkTake 0.9g/cm3；R is wire radius, unit mm；R is ground wire radius, unit mm；B is standard ice thickness, single
Position is mm；α is icing ground region and non-ice coating wire area ratio, and expression formula isB0Tentatively to judge ground
The icing degree of line.
Referring to Fig. 4, described image processing module 2 also does icing anticipation to the realtime graphic of captured route, when judging line
When the edge of road image is burr, then edge-smoothing processing is carried out to circuit image, the edge-smoothing processing includes: average value
Method, minimum value method or filtering burr method；Realtime graphic can also be amplified, reduced, rotated and resetted by image processing module 2
Operation, so as to the measurement to conducting wire, ground wire figure in image, wherein 360 ° of operations can be achieved in rotation.
Referring to Fig. 5, the graphical vernier caliper of the thickness measure module 3 has two-stage scale, and the two poles of the earth scale is conducive to
Improve measurement accuracy.The slide calliper rule portion of graphical vernier caliper, which uses, to be manually aligned with circuit image edge, the measurement to route
Multiple repairing weld measurement is carried out to route using sampling algorithm.Graphical vernier caliper includes the elastic button in slide calliper rule portion, is manually set
Graphical vernier caliper is set on conducting wire, ground wire figure, it, can be real by the elastic button in slide calliper rule portion by slide calliper rule portion alignment pattern boundary
Existing slide calliper rule portion is aligned with graphic limit；Graphical vernier caliper is more by the sampling algorithm of setting behind alignment pattern boundary
After secondary sampled measurements are averaged, real-time display measures width numerical value, referring to Fig. 6.In the present embodiment, settable to be at best able to
99 sampling operations are carried out, the final average value for obtaining multiple repairing weld.
System of the invention further includes having memory module (not shown), to database form storage image capture module,
The respective data of image processing module and icing analysis module, for result queries and export.
System of the invention further includes having result output module (not shown), setting ice covering thickness computed push-buttom and calculating knot
Fruit inquiry, and the information by dialogue box form to improve calculated result, for example supplement and cover after calculating current ice covering thickness
The site information of ice route.
Illustrated below with calculated examples.
Referring to Fig. 7, the XX second line 260# tower of XX innings of anti-icing personnel's shootings when photo uses 15 days 10 December in 2014 is verified
Icing photo.The wire type of the route is JLHA2X/G1A-1035/75, and diameter of wire 39.5mm, ground wire model is LBGJ-
240-20AC, ground linear diameter 20mm.
Electric power line ice-covering thickness identification calculation method and system through the invention, can calculate the icing on right side in figure
Ground wire borderline region width, the ratio with the non-ice coating wire borderline region width in left side in figure are 4.12, i.e. modified QWERTY
α in ice thickness computation model is 4.12, and details are as shown in figure 9, the icing type that can obviously observe ground wire from figure is mist
Rime, rule of thumb taking ground wire iced insulator is 0.1 g/cm3, can be counted using the ice covering thickness of modified QWERTY ice thickness computation model
Calculation XX second line 260# tower ground wire ice covering thickness is 18.7mm, is calculated as follows:
Referring to Fig. 8 and Fig. 9, XX second line 260# when 15 days 10 January in 2014 that the continuous shelves model of ice-coating pre-warning system calculates
Tower ground wire ice covering thickness is 20.3mm.It is 16mm that XX second line 260# tower ground wire, which manually sees ice result,.It is calculated based on high-definition image
XX second line 260# tower ground wire ice covering thickness is 18.7mm, the Comparative result calculated with the continuous shelves model of ice-coating pre-warning system, error
Less than 2mm；Ice Comparative result, error 2.7mm are seen with artificial, it is contemplated that artificial sight ice measurement is analog conducting wire at column foot
Ice thickness, artificial ice result of seeing must have certain gap compared with high aerial ground wire icing situation.Therefore, in general, this patent
The electric power line ice-covering thickness calculation method based on high-definition image used be it is feasible and accurate, during the anti-icing spy in the future patrols
Artificial ice result of seeing can be verified, with adopting said method analysis circuit ice covering thickness to improve artificial sight ice level and sight
Ice accuracy.
Above-described embodiment is only to illustrate the present invention and not limits the technical scheme described by the invention；Therefore, although
The present invention has been described in detail referring to above-mentioned each embodiment for this specification, still, the ordinary skill of this field
Personnel should be appreciated that and still can modify or equivalently replace the present invention；And all do not depart from spirit of the invention and
The technical solution and its improvement of range, are intended to be within the scope of the claims of the invention.
Claims (6)
1. a kind of electric power line ice-covering thickness calculation method based on high-definition image, which comprises the steps of:
Step 1, the realtime graphic including transmission line wire and ground wire is obtained；
Step 2, compare the thickness ratio of conducting wire and ground wire in the realtime graphic of Same Scene, tentatively judge the icing journey of ground wire
Degree；
Step 3, according to the diameter specifications and actual measurement thickness ratio of transmission line wire and ground wire, using modified QWERTY ice thickness meter
It calculates model and obtains ice covering thickness；
The step 2 further includes following steps:
Step 21, judge the icing type of the respective route of conducting wire in realtime graphic, ground wire, the icing type includes that route does not cover
Ice, transmission line icing are rime or the mixing river in Jiangsu Province which flows into the Huangpu River of Shanghai, transmission line icing are glaze；
Step 22, when judge transmission line icing type for rime or mixing the river in Jiangsu Province which flows into the Huangpu River of Shanghai, then using mean value method, minimum value method or filtering hair
Acupuncture manipulation is cooked smoothing processing to the boundary of the circuit image of the icing type；
Step 23, on the basis of above-mentioned steps 21,22, respectively measure traverse line, line image line diameters, covered with this
Ice ground region and non-ice coating wire area ratio；
The modified QWERTY ice thickness computation model of the step 3 is as follows:
Wherein, k-ρIceWith ρMarkRatio, ρIceFor the iced insulator of ground wire, is calculated and obtained according to icing type or scene, difference is covered
The density range of ice type: glaze 0.7~0.9；Rime 0.1~0.3；Mix the river in Jiangsu Province which flows into the Huangpu River of Shanghai 0.2~0.6；Snow slush 0.2~0.4, unit g/
cm3, ρMarkTake 0.9g/cm3；R is wire radius, unit mm；R is ground wire radius, unit mm；B is standard ice thickness, and unit is
mm；α is icing ground region and non-ice coating wire area ratio；
Icing ground region and non-ice coating wire area ratio alpha expression formula are as follows:
Wherein B0For the icing degree for tentatively judging ground wire；R is wire radius；R is ground wire radius.
2. the electric power line ice-covering thickness calculation method according to claim 1 based on high-definition image, which is characterized in that institute
State step 21 is to the judgement of transmission line icing: first the edge degree of comparing of circuit image is handled, judge edge whether be
Burr is that then corresponding line icing is rime or the mixing river in Jiangsu Province which flows into the Huangpu River of Shanghai.
3. a kind of electric power line ice-covering thickness computing system based on high-definition image, which is characterized in that include:
Image capture module, for shooting the conducting wire of transmission line of electricity and the realtime graphic of ground wire, wherein conducting wire and ground wire are in same
In one viewfinder range；
Image processing module does contrast processing, edge-smoothing processing for the realtime graphic to captured route；
Thickness measure module, using circuit image of the patterned vernier caliper measurement after image processing module optimizes；
Icing analysis module, for obtaining ice covering thickness value by modified QWERTY ice thickness computation model；
The modified QWERTY ice thickness computation model that the icing analysis module uses is as follows:
Wherein, k-ρIceWith ρMarkRatio, ρIceFor the iced insulator of ground wire, is calculated and obtained according to icing type or scene, difference is covered
The density range of ice type: glaze 0.7~0.9；Rime 0.1~0.3；Mix the river in Jiangsu Province which flows into the Huangpu River of Shanghai 0.2~0.6；Snow slush 0.2~0.4, unit g/
cm3, ρMarkTake 0.9g/cm3；R is wire radius, unit mm；R is ground wire radius, unit mm；B is standard ice thickness, and unit is
mm；α is icing ground region and non-ice coating wire area ratio, and expression formula isB0Tentatively to judge ground wire
Icing degree.
4. the electric power line ice-covering thickness computing system according to claim 3 based on high-definition image, which is characterized in that institute
It states image processing module to be also used to do the realtime graphic of captured route icing anticipation, when judging the edge of circuit image for hair
When thorn, then edge-smoothing processing carried out to circuit image, edge-smoothing processing include: mean value method, minimum value method or
Filter burr method.
5. the electric power line ice-covering thickness computing system according to claim 3 based on high-definition image, which is characterized in that institute
The graphical vernier caliper for stating thickness measure module has a two-stage scale, and the slide calliper rule portion of graphical vernier caliper is using manually and line
The alignment of road image border carries out multiple repairing weld measurement to route using sampling algorithm to the measurement of route and is averaged.
6. the electric power line ice-covering thickness computing system according to claim 3 based on high-definition image, which is characterized in that also
It include memory module, respectively to database form storage image capture module, image processing module and icing analysis module
Data, for result queries and export.
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| CN107657090B (en) * | 2017-09-12 | 2020-10-20 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for judging icing instability of tension tower of power transmission line |
| CN107729397B (en) * | 2017-09-21 | 2020-01-14 | 国网天津市电力公司电力科学研究院 | Method for judging ice and snow covering type by using RGB (red, green and blue) components of image |
| CN110376830B (en) * | 2019-08-12 | 2023-09-05 | 中国南方电网有限责任公司超高压输电公司电力科研院 | Overhead transmission line icing diagnosis method and diagnosis device thereof |
| CN114264259B (en) * | 2021-04-02 | 2023-03-10 | 湖南国戎科技有限公司 | Equivalent ice observation method and system |
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