CN102507132A - 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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- CN102507132A CN102507132A CN2011104411019A CN201110441101A CN102507132A CN 102507132 A CN102507132 A CN 102507132A CN 2011104411019 A CN2011104411019 A CN 2011104411019A CN 201110441101 A CN201110441101 A CN 201110441101A CN 102507132 A CN102507132 A CN 102507132A
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- ice
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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 at the 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-to wave research 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 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 formed by aluminium section bar, two kinds of materials processings of timber.
As shown in Figure 1, aluminium section bar simulation ice cross sectional shape is half elliptic, and the right part inboard is provided with convexity, is installed on the lead 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 lead to remain the installation of fixed angle, aluminium section bar simulation ice can not be closely fixing with lead owing to its natural speciality; Situation with respect to the lead rotation often takes place, and its angle with wind direction is difficult to fixing more and adjusts.When therefore it is installed on transmission line of electricity, need other auxiliary anchor ear that itself and lead 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 lead, and at first it can not well be fixed with lead, more can not adjust the angle of itself and wind direction easily.
The state that simulation ice why can analog conducting wire be waved, one of reason are that its density and the ice and snow density and the weight of adhering to are approaching, and when reaching suitable wind direction and forming stable updraft, lead is promptly waved.And timber simulation ice is difficult to artificial control because itself density receives the self-sown restriction of timber, more can't be with the unified density value for confirming of all devices that is installed on circuit; Add man-hour in addition; It is difficult to pour out accurately, glibly angle, radian with wire-bonds the decision of the speciality of timber itself, thereby it is when fixing with lead, the smoothness excessively inadequately of two kinds of materials; 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 lead, can not fix well, and perhaps needing fixedly the time so both increase executive cost by certain external force means, has increased difficulty of construction again.
Simulation ice can successful analog conducting wire wave depend on following some:
1, approaching with natural icing density weight, while consistent in density, adjustable; 2, with wind direction suitable angle is arranged; 3, closely fixing with lead, refer to that mainly both fix by relative position when setting angle is confirmed, can not produce rotation with respect to lead, situation such as mobile; The aerodynamic force characteristics of waving when 4, profile, density meet ice and snow attached to lead.
In addition, consider real feasibility, simulation ice material should have cheap, durable; Processing and fabricating is convenient; Be convenient to characteristics such as operation installation at the scene, 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 said end clamping body is shaft-like; The arc of said 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 to clamp lead jointly.
Said outer arc inboard also is integrally formed with the hollow cylinder clamping body, and said hollow cylinder clamping body is between middle part clamping body and end clamping body.
Said angle β is 145 ° ~ 170 °.
The lower end of end clamping body is provided with bending, and the lower surface of said bending is provided with uneven surface, and the end of middle part clamping body also is provided with uneven surface.
The manufacturing materials of said icing analogue means comprises major ingredient PVC type resin.
The surface of said icing analogue means scribbles reflectorized material.
Said reflectorized material is a 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 lead 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 ice and snow and adhered to lead in design, its thickness and profile are all passed through tight simulation calculation.Can be used for test circuit under the natural conditions simultaneously and wave with breadboard and wave simulation, under being used for natural conditions waving simulation the time, can calculate the thickness of simulation ice according to the condition of local meteorological condition and natural wind separately.The diameter of device center circle should be complementary with wire diameter.
The present invention is installed on before the lead, should carry out the clamping force test.At first, with the lead horizontal fixed, two ends install force tester additional, will simulate ice production apparatus and snap in lead, simultaneously clasp guideline and the tightness degree of simulating ice.According to the size of the dynamometry size of adjusting gear gradually.
See as night and to wave when needing, can brush the reflectorized material of fluorescer class at outside surface of the present invention, add that certain light is auxiliary, just can carry out waving night observation easily, track waved in record.
The present invention can be used for little span in laboratory and real big span transmission line of electricity simultaneously, when being installed on big 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 that the present invention is unique makes device have 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 lead, 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 aerodynamic simulation to greatest extent,, science more more flexible and practicality than the design of traditional device.
Advantage of the present invention:
The first, the whole outline of the present invention roughly is " D " shape, still the limit " evagination " of " D " shape (with the perpendicular line angle); One side is the windward side; When wind when the windward side blows to lead, the part of evagination can " catch wind ", thereby forms stable updraft; When lead and wind direction form suitable angle, can wave phenomenon.
The second, center of gravity of the present invention does not relatively rotate between the two when helping this device like this and being installed on lead or moves on the center of circle of lead position.
The 3rd, the present invention to increase friction force, contacts through three uneven surfaces A, B, three face hackings of C with lead.Simultaneously because the PVC section bar itself has certain elasticity and toughness, make lead 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 lead.
The 4th, the hollow cylinder clamping body of two symmetries plays the effect of supporting and regulating weight in the middle of the present invention.
The 5th, centre of the present invention is a 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 the conventional analogue ice production apparatus; Have the aerodynamic force characteristics that more meet lead and dance, more accurately simulate icing density, be easier to be applied in 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, reduction expense.
Simultaneously, according to the research needs when the density inching, mould in the time of can revising producing device or fine setting traction engine speed; When bigger change, can remodify mould; This simulation ice of waving research than traditional being used to is more flexible, 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 a structural representation of the present invention;
Fig. 4 is the synoptic diagram of dimensioning parameter on Fig. 3.
Embodiment
Like Fig. 3, shown in 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 an arc, is " D " shape.Lead 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 lead 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 lead 2; The bottom of middle part clamping body 6 and bending 4 is equipped with uneven surface 5 (being denoted as A, B, C among Fig. 4 respectively); Uneven surface 5 is pressed on the lead 2 continuously, uneven surface 5 can effectively increase and lead 2 between friction force.Two end clamping bodies 3 are pressed against on the circle of lead 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, promptly between end clamping body 3 and the middle part clamping body 6.Hollow cylinder clamping body 7 works to regulate weight.
Middle part clamping body 6, end clamping body 3 can firmly clamp lead 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) that simulation is iced on the one hand with the density of adhering to ice and snow; 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 lead center of circle.
As shown in Figure 4, the main key parameter of the present invention has: the thickness H of outer arc 1, interior circular diameter Φ, the high d1 of outer arc 1, wide d2, end clamping body 3 and perpendicular line angle.
PVC simulation ice production apparatus of the present invention is after confirming above key parameter; Make; Be installed on afterwards on the 500kV test circuit lead; The maximum amplitude of waving of observation reaches 4m, and lead can form and continues for a long time to wave when natural wind continues to brush circuit, has set up good observation condition for waving to study.
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 said end clamping body is shaft-like; The arc of said 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 to clamp lead jointly.
2. the icing analogue means that is applied to extra high voltage network according to claim 1 is characterized in that: said outer arc inboard also is integrally formed with the hollow cylinder clamping body, and said 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 is characterized in that: said 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 said 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 is characterized in that: the manufacturing materials of said 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 said icing analogue means scribbles reflectorized material.
7. the icing analogue means that is applied to extra high voltage network according to claim 6 is characterized in that: said reflectorized material is a 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 |
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| CN102507132A true CN102507132A (en) | 2012-06-20 |
| CN102507132B CN102507132B (en) | 2013-09-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104504973A (en) * | 2014-12-18 | 2015-04-08 | 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 |
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 |
| 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 |
| 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
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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 |
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Non-Patent Citations (2)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104504973A (en) * | 2014-12-18 | 2015-04-08 | 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 |
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| CN102507132B (en) | 2013-09-18 |
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Owner name: HE NAN ELECTRIC POWER CORPORATION, ELECTRIC POWER Free format text: FORMER OWNER: HENAN INSTITUTE OF POWER EXPERIMENT Effective date: 20121108 Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121108 |
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Effective date of registration: 20121108 Address after: 450052 Songshan South Road, Henan, No. 85, No. Applicant after: Henan Electric Power Corporation Electric Power Science Research Institute Applicant after: State Grid Corporation of China Address before: 450008 Songshan South Road, Henan, No. 85, No. Applicant before: Henan Institute of Power Experiment |
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