CN102507132B - Icing simulation device applied to extra-high voltage (EHV) power transmission lines - Google Patents
Icing simulation device applied to extra-high voltage (EHV) power transmission lines Download PDFInfo
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- CN102507132B CN102507132B CN 201110441101 CN201110441101A CN102507132B CN 102507132 B CN102507132 B CN 102507132B CN 201110441101 CN201110441101 CN 201110441101 CN 201110441101 A CN201110441101 A CN 201110441101A CN 102507132 B CN102507132 B CN 102507132B
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- 238000004088 simulation Methods 0.000 title abstract description 37
- 230000005540 biological transmission Effects 0.000 title abstract description 10
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- 239000004615 ingredient Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 5
- 101100537937 Caenorhabditis elegans arc-1 gene Proteins 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 9
- 239000004411 aluminium Substances 0.000 description 9
- 238000011160 research Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
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- 239000011248 coating agent Substances 0.000 description 2
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- 230000000295 complement effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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Abstract
The invention discloses an icing simulation device applied to extra-high voltage (EHV) power transmission lines. The icing simulation device comprises an outer arc and two end part clamping bodies which are integrally arranged and are located at two ends of the outer arc; the outer arc is a D-shaped arc; the end part clamping bodies are of rod shapes; a middle clamping body is further arranged atthe middle part of the outer arc; an included angle beta between the two end part clamping bodies is less than 180 DEG; and lower ends of the end part clamping bodies and an end part of the middle clamping body together form a space for the clamping mounting of leads in an encircling manner. The icing simulation device has the principle that: in order to simulate the aerodynamic characteristics when ice and snow are attached to the leads, the ice and the snow are simulated and are designed to have a thickness H according to the density of the attached ice and snow, a convex wind-catching cross sectional shape is designed according to the characteristics of a dancing airflow, the simulation on a dancing aerodynamic force is furthest carried out, therefore, the icing simulation device is more flexible, scientific and practical in design compared with the traditional device.
Description
Technical field
The present invention relates to the icing simulation field, especially relate to a kind of icing analogue means.
Background technology
The powerline ice-covering problem of waving is universally acknowledged technical barrier, and Anti-galloping research is all significant to prevent and reduce natural disasters technology and even national economy etc. of national grid safety, electrical network.The icing analogue means is that a kind of transmission line wire that is installed on is used for the state of analog conducting wire icing and then the device that research is waved.This device will successfully be simulated and be waved, and except the excitation of external condition wind, one of important factor is necessarily to wave in the cycle, and simulation ice production apparatus and wind direction have certain suitable angle.
Traditional icing analogue means is processed by aluminium section bar, timber bi-material.
As shown in Figure 1, aluminium section bar simulation ice cross sectional shape is half elliptic, and the right part inboard is provided with projection, is installed on the wire 2.Because transmission line wire is steel-cored aluminium strand, fixedly the time, surface of contact is little with it for aluminium section bar simulation ice, and friction force is little, is difficult to combine closely; And simulation ice is mainly used in the analog line icing and waves, require itself and wire to remain the installation of fixed angle, aluminium section bar simulation ice can not be closely fixing with wire owing to its natural speciality, situation with respect to the wire rotation often occurs, and its angle with wind direction is difficult to fixing and adjustment more.When therefore it is installed on transmission line of electricity, need other auxiliary anchor ear that itself and wire are tightened, this has just increased Master Cost and construction cost.In addition, aluminium section bar material and processing charges are high, and be when producing the simulation ice of same weight, more expensive more than 70% than PVC section bar simulation ice.
As shown in Figure 2, timber simulation ice production apparatus has same problem with aluminium section bar, and timber simulation ice medial surface is the semicircle coaxial with wire, and at first it can not well be fixed with wire, more can not adjust easily the angle of itself and wind direction.
The state that simulation ice why can analog conducting wire be waved, one of reason are that its density and ice and snow density and the weight of adhering to are approaching, and when reaching suitable wind direction and forming stable updraft, wire is namely waved.And timber simulation ice is difficult to manual control because itself density is subjected to the self-sown restriction of timber, more can't will be installed on the unified density value for determining of all devices of circuit; Add in addition man-hour, the speciality of timber itself determines that it is difficult to pour out accurately, glibly angle, the radian of being combined with wire, thereby it is when fixing with wire, the excessively not smoothness of bi-material, be difficult to form stable updraft, the weak effect that simulation is waved.The 3rd, timber is the same with aluminium section bar with the combination between the wire, can not fix well, perhaps needs by certain external force means fixedly the time, so both increase executive cost, has increased again difficulty of construction.
Simulation ice can successful analog conducting wire wave depend on following some:
1, approaches with natural icing density weight, simultaneously consistent in density, adjustable; 2, with wind direction suitable angle is arranged; 3, closely fixing with wire, mainly finger is when setting angle is determined, both fix by relative position, can not produce the situations such as rotation with respect to wire, movement; The aerodynamic force characteristics of waving when 4, profile, density meet ice and snow and is attached to wire.
In addition, consider realistic feasibility, simulation ice material should have cheap, durable; Processing and fabricating is convenient; Be convenient to the characteristics such as at the scene operation installation, construction cost is low, use is flexible.
Summary of the invention
The object of the present invention is to provide a kind of icing analogue means that is applied to extra high voltage network, more effectively the analog line ice coating state.
Technical scheme of the present invention is:
A kind of icing analogue means that is applied to extra high voltage network comprises outer arc and is positioned at the end clamping body that the outer arc two ends are wholely set that outer arc is the arc of " D " shape, and described end clamping body is shaft-like; The arc of described outer arc middle part also is provided with the middle part clamping body, and the angle β between two end clamping bodies is less than 180 °; The end of the lower end of end clamping body and middle part clamping body surrounds a space that is used for clamping wire jointly.
Described outer arc inboard also is integrally formed with the hollow cylinder clamping body, and described hollow cylinder clamping body is between middle part clamping body and end clamping body.
Described angle β is 145 ° ~ 170 °.
The lower end of end clamping body is provided with bending, and the lower surface of described bending is provided with uneven surface, and the end of middle part clamping body also is provided with uneven surface.
The making material of described icing analogue means comprises major ingredient PVC type resin.
The surface of described icing analogue means scribbles reflectorized material.
Described reflectorized material is fluorescer.
The present invention is applied to the ultra-high-tension power transmission line of 110kV ~ 500kV scope and waves research field, the particularly 500kV extra high voltage network wire research of dancing.The simulation ice production apparatus is to be formed by major ingredient PVC-SG5 type resin and auxiliary material processing and fabricating.Consider the natural conditions (wind, Exposure to Sunlight, drench with rain) of transmission line of electricity, be added with uvioresistant and anti-aging composition in the auxiliary material, to improve the performance of the present invention when being applied to outdoor circuit.
Aerodynamic characteristics when PVC simulation ice is followed in design ice and snow and adhered to wire, its thickness and profile are all passed through tight simulation calculation.Can be simultaneously be used for test circuit under the natural conditions and wave the simulation of waving with the laboratory, under being used for natural conditions waving simulation the time, can calculate separately according to the condition of local meteorological condition and natural wind the thickness of simulation ice.The diameter of device center circle should be complementary with wire diameter.
The present invention is installed on before the wire, should carry out the clamping force test.At first, the wire level is fixed, two ends install force tester additional, will simulate ice production apparatus and snap in wire, simultaneously clasp guideline and the tightness degree of simulating ice.According to the size of the dynamometry size of adjusting gear gradually.
When having see night to wave when needing, can brush at outside surface of the present invention the reflectorized material of fluorescer class, add that certain light is auxiliary, just can carry out easily waving night observation, track waved in record.
The present invention can be used for the little span in laboratory and real large span transmission line of electricity simultaneously, when being installed on large span transmission line of electricity, can being processed into segment and being loaded on whole shelves circuit, and every section maximum length is not advised greater than 2 meters.
The prescription of uniqueness of the present invention is so that device has certain uvioresistant and ageing resistance, and is durable.
Principle of the present invention: in order to simulate the aerodynamic characteristics of ice and snow when adhering to wire, the present invention carries out emulation and designs thickness H according to the density of adhering to ice and snow; Design the cross sectional shape that evagination " goes for a drive " according to the flow feature of waving, wave to greatest extent aerodynamic simulation,, science more more flexible than the design of traditional device and practicality.
Advantage of the present invention:
First, the whole outline of the present invention roughly is " D " shape, the limit " evagination " of " but D " shape (with perpendicular line angle α), one side is the windward side, when wind blowed to wire from the windward side, the part of evagination can " catch wind ", thereby formed stable updraft, when wire and wind direction formed suitable angle, brandishing can occur.
The second, center of gravity of the present invention does not relatively rotate when being conducive to like this this device and being installed on wire or mobile on the center of circle of wire position between the two.
The 3rd, the present invention to increase friction force, contacts by three uneven surfaces A, B, three face hackings of C with wire.Simultaneously because the PVC section bar itself has certain elasticity and toughness, make wire and PVC under friction force, elastic force and fastening effect, firmly fix (external diameter by A, B, C three place's circumscribed circles should be complementary with 500kV line wire external diameter) with wire.
The 4th, the hollow cylinder clamping body of two symmetries plays the effect of support and regulating weight in the middle of the present invention.
The 5th, centre of the present invention is hollow, is convenient to realize simulating the flexible adjustment of ice concentration, and density remains identical with shape ice and snow.
The present invention compares with traditional simulation ice production apparatus, have the aerodynamic force characteristics that more meet wire and dance, more accurately simulation ice-coating density, be easier to be applied in the characteristics such as conductor galloping research field, simultaneously the PVC material is cheap, durable, and on-the-spot fitting operation is simple, can significantly reduce operating personnel's difficulty of construction, decrease cost.
Simultaneously, according to studying needs when the density inching is arranged, the mould in the time of can revising producing device or fine setting traction engine speed; When larger change is arranged, can remodify mould; This is more more flexible than traditional simulation ice that is used for waving research, science and practicality.
Description of drawings
Fig. 1 is the structural representation of aluminium section bar simulation ice production apparatus cross sectional shape;
Fig. 2 is the structural representation of timber simulation ice production apparatus cross sectional shape;
Fig. 3 is structural representation of the present invention;
Fig. 4 is the schematic diagram of dimensioning parameter on Fig. 3.
Embodiment
Shown in Fig. 3,4, the present invention includes outer arc 1 and be positioned at the end clamping body 3 that outer arc 1 two ends are wholely set, end clamping body 3 is towards the center of circle of outer arc 1 outer arc, and outer arc 1 is arc, is " D " shape.Wire 2 is sandwiched in the present invention middle part, and the two ends line of outer arc 1 circular arc is positioned at the outside of wire 2, and end clamping body 3 is shaft-like, and the lower end of two end clamping bodies 3 is equipped with bending 4 up and down.Arc middle part at outer arc 1 also is provided with middle part clamping body 6, middle part clamping body 6 leans on wire 2, the bottom of middle part clamping body 6 and bending 4 is equipped with among uneven surface 5(Fig. 4 and is denoted as respectively A, B, C), uneven surface 5 is pressed on the wire 2 continuously, uneven surface 5 can effectively increase and wire 2 between friction force.Two end clamping bodies 3 are pressed against on the circle of wire 2 left-half.Angle β between two end clamping bodies 3 should be less than 180 °, and optimum value is 145 ° ~ 170 °.
Also be integrally formed with in outer arc 1 inboard 7, two hollow cylinder clamping bodies 7 of two hollow cylinder clamping bodies lay respectively at the middle part clamping body about in the of 6 both sides, namely between end clamping body 3 and the middle part clamping body 6.Hollow cylinder clamping body 7 plays regulating weight.
Middle part clamping body 6, end clamping body 3 can firmly clamp wire 2 like this.
Outer arc 1 inboard with middle part clamping body 6, end clamping body 3 and two hollow cylinder clamping bodies 7 between be the structure of hollow, be to be convenient to adjust the density (unifying mutually with the density of adhering to ice and snow) that simulation is iced on the one hand; The structure of hollow is convenient to adopt alternate manner on the other hand, when simulation ice production apparatus part has when loosening it is fixed.
The simulation ice production apparatus is to be formed by major ingredient PVC-SG5 type resin and auxiliary material processing and fabricating.Consider the natural conditions (wind, Exposure to Sunlight, drench with rain) of transmission line of electricity, be added with uvioresistant and anti-aging composition in the auxiliary material, to improve the performance of the present invention when being applied to outdoor circuit.Center of gravity of the present invention overlaps with the wire center of circle.
As shown in Figure 4, the main key parameter of the present invention has: the high d1 of the thickness H of outer arc 1, inner circle diameter of phi, outer arc 1, wide d2, end clamping body 3 and perpendicular line angle α.
PVC simulation ice production apparatus of the present invention is after determining above key parameter, make, be installed on afterwards on the 500kV test circuit wire, the maximum amplitude of waving of observation reaches 4m, and wire can form and continue for a long time to wave when natural wind continues to brush circuit, has set up good observation condition for waving research.
Claims (7)
1. icing analogue means that is applied to extra high voltage network is characterized in that: comprise outer arc and be positioned at the end clamping body that the outer arc two ends are wholely set, outer arc is the arc of " D " shape, and described end clamping body is shaft-like; The arc of described outer arc middle part also is provided with the middle part clamping body, and the angle β between two end clamping bodies is less than 180 °; The end of the lower end of end clamping body and middle part clamping body surrounds a space that is used for clamping wire jointly.
2. the icing analogue means that is applied to extra high voltage network according to claim 1, it is characterized in that: described outer arc inboard also is integrally formed with the hollow cylinder clamping body, and described hollow cylinder clamping body is between middle part clamping body and end clamping body.
3. the icing analogue means that is applied to extra high voltage network according to claim 1 and 2, it is characterized in that: described angle β is 145 ° ~ 170 °.
4. the icing analogue means that is applied to extra high voltage network according to claim 1 and 2, it is characterized in that: the lower end of end clamping body is provided with bending, and the lower surface of described bending is provided with uneven surface, and the end of middle part clamping body also is provided with uneven surface.
5. the icing analogue means that is applied to extra high voltage network according to claim 1 and 2, it is characterized in that: the making material of described icing analogue means comprises major ingredient PVC type resin.
6. the icing analogue means that is applied to extra high voltage network according to claim 1 and 2, it is characterized in that: the surface of described icing analogue means scribbles reflectorized material.
7. the icing analogue means that is applied to extra high voltage network according to claim 6, it is characterized in that: described reflectorized material is fluorescer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110441101 CN102507132B (en) | 2011-12-26 | 2011-12-26 | Icing simulation device applied to extra-high voltage (EHV) power transmission lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110441101 CN102507132B (en) | 2011-12-26 | 2011-12-26 | Icing simulation device applied to extra-high voltage (EHV) power transmission lines |
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| Publication Number | Publication Date |
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| CN102507132A CN102507132A (en) | 2012-06-20 |
| CN102507132B true CN102507132B (en) | 2013-09-18 |
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| CN 201110441101 Active CN102507132B (en) | 2011-12-26 | 2011-12-26 | Icing simulation device applied to extra-high voltage (EHV) power transmission lines |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104504973B (en) * | 2014-12-18 | 2017-01-11 | 中国南方电网有限责任公司超高压输电公司梧州局 | Device for simulating lead icing |
| CN107782527A (en) * | 2017-11-14 | 2018-03-09 | 国网新疆电力有限公司电力科学研究院 | Transmission line wire wind tunnel test assembly type simulation system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1663675A1 (en) * | 1988-12-12 | 1991-07-15 | Киргизский Научно-Исследовательский Отдел Энергетики | Wall for studying wind and ice loads on split phases of air power transmission lines |
| RU2273932C2 (en) * | 2004-04-09 | 2006-04-10 | Виталий Яковлевич Башкевич | Device for remote measurement of ice, wind, and ice-wind loads on intermediate-span wire of overhead power transmission line and for indication of relative direction of wind |
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| CN201569450U (en) * | 2009-10-28 | 2010-09-01 | 西北电网有限公司 | Suspension device for icing simulation verification of transmission conductor |
| CN202092851U (en) * | 2011-05-30 | 2011-12-28 | 华北电力大学（保定） | Device for icing load simulation test of overhead line |
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2011
- 2011-12-26 CN CN 201110441101 patent/CN102507132B/en active Active
Patent Citations (7)
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| SU1663675A1 (en) * | 1988-12-12 | 1991-07-15 | Киргизский Научно-Исследовательский Отдел Энергетики | Wall for studying wind and ice loads on split phases of air power transmission lines |
| RU2273932C2 (en) * | 2004-04-09 | 2006-04-10 | Виталий Яковлевич Башкевич | Device for remote measurement of ice, wind, and ice-wind loads on intermediate-span wire of overhead power transmission line and for indication of relative direction of wind |
| CN201569450U (en) * | 2009-10-28 | 2010-09-01 | 西北电网有限公司 | Suspension device for icing simulation verification of transmission conductor |
| CN101706341A (en) * | 2009-10-30 | 2010-05-12 | 河南送变电建设公司 | Ice coating load simulated hanging mechanism of electric transmission line |
| CN201527280U (en) * | 2009-11-12 | 2010-07-14 | 河南索凌电气有限公司 | Device for testing ice covering of a line |
| CN202092851U (en) * | 2011-05-30 | 2011-12-28 | 华北电力大学（保定） | Device for icing load simulation test of overhead line |
| CN202382924U (en) * | 2011-12-26 | 2012-08-15 | 河南电力试验研究院 | Icing simulator applied to extra-high voltage transmission line |
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| Title |
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