A method for strengthening the pole's ice-proof and wind-resistant structure for agricultural distribution network
A pole and anti-icing technology, which is applied in data processing applications, electrical digital data processing, special data processing applications, etc., can solve problems such as power outages, small wire diameters, and poles falling in series, so as to improve the carrying capacity and avoid The effect of bending deformation and low modification cost
Active Publication Date: 2017-05-03
STATE GRID CORP OF CHINA +2
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Problems solved by technology
[0002] Rural distribution network lines mostly use self-supporting conical cement poles, and the wires themselves have a small diameter. Under ice-covered conditions, due to unbalanced tension caused by gaps, height differences, climate, etc., and wind loads in the direction perpendicular to the line, Electric poles may fall in series and cause large-scale power outages
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[0036] Such as figure 1 As shown, the steps of this embodiment for strengthening the pole anti-icing and wind-resistant structure of the agricultural distribution network include:
[0037] 1) Select a pole from all the poles to be reinforced in the agricultural distribution network as the current pole;
[0038] 2) Establish a 3D model of the current pole and wire according to the structure of the current pole and the type of wire installed, and add anti-icing and wind-resistant pull wires to the current pole in the 3D model according to the specified installation method, and add specified covering wires to the wires. ice thickness;
[0039] 3) A variety of optional cable pre-tensions are set respectively. For each type of cable pre-tension, the three-dimensional model is imported into the finite element analysis software to calculate the mechanical index of the finite element model. The mechanical index of the finite element model includes the maximum displacement of the pole...
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The invention discloses an ice-prevention and wind-resistant structure reinforcement method for electric poles of an agricultural distribution network. The method comprises the following steps of firstly, building a three-dimensional model of a current electric pole and a wire for each electric pole of the agricultural distribution network, additionally arranging ice-prevention and wind-resistant pull lines, increasing a designated ice coating thickness for the wire, calculating a mechanical index by finite element analysis, and determining optimal pull-line pre-tension force for the additionally-arranged ice-prevention and wind-resistant pull lines of each electric pole according to the mechanical index; and finally, installing the ice-prevention and wind-resistant pull lines according to a designated installation mode with regard to each electric pole to be reinforced in the agricultural distribution network, and making the pre-tension force be the optimal pull-line pre-tension force corresponding to the ice-prevention and wind-resistant pull lines. By the method, the bearing capability of ice prevention and wind resistance of the electric pole can be improved, the safety performance of the electric pole is improved, the electric pole is prevented from being bent and deformed, a large-area series-collapse accident of the electric poles of the agricultural distribution network is avoided, the safety level of an agricultural distribution network circuit is improved, stable and reliable running of the agricultural distribution network during peak loading in winter, a short construction period and a low reconstruction cost are ensured, no structural damage is caused to the traditional electric pole, and the construction is simple.
Description
technical field [0001] The invention relates to a disaster prevention technology for poles in an agricultural distribution network, in particular to a method for strengthening an anti-icing and wind-resistant structure of an electric pole for an agricultural distribution network. Background technique [0002] Rural distribution network lines mostly use self-supporting conical cement poles, and the wires themselves have a small diameter. Under ice-covered conditions, due to unbalanced tension caused by gaps, height differences, climate, etc., and wind loads in the direction perpendicular to the line, There may be accidents of electric poles falling in series, causing large-scale power outages. At the same time, the most serious threat of wind and ice loads is the Spring Festival, which is an important holiday in my country. The lines of the agricultural distribution network cross the complex terrain, and the financial resources and technical foundation are relatively weak. T...
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IPC IPC(8): H02G1/02E04H12/20G06F17/50G06Q50/06
Inventor 欧阳克俭刘纯王军谢亿胡加瑞李明
Owner STATE GRID CORP OF CHINA