一、xxx110现在是导、地线的机械物理特性表机械物理特性导线地线←-70/40-95/20-95/55-120/7-120/20-120/25铝68.05－68.0569.7395.1496.51118.89115.67122.48钢11.3437.1711.3440.6718.8256.36.6118.8224.25合计79.3937.1779.39110.4113.96152.81125.5134.49146.73铝钢比6.00－6.001.715.061.7117.996.155.05外径11.47.811.413.613.871614.515.0715.74计算拉断力233904268823390350003720078110275704100047880计算重量0.27520.31820.27520.38080.40890.70770.3790.46680.5266弹性模量790001814207900010500076000105000660007600076000线膨胀系数1.91E-051.15E-051.91E-051.53E-051.85E-051.53E-052.13E-051.89E-051.85E-05294.61148.5最大使用应力[σm]117.85382.82安全系数K2.53.0年平均运行应力[σpj]73.7287.1设计气象条件组合表项目温度℃←温度℃温度℃最高气温400040004000最低气温-2000-2000-1000最大风速-5250-5250-5250最大覆冰-51010-51010-5105安装情况-10100-10100-5100事故情况-500-500-500大气过电压151001510015100操作过电压151501515015150年平均气温150015001500冰比重0.9年雷电日≥40导、地线比载计算表比载种类比载计算公式导线地线自重比载0.034005690.08398015冰重比载0.074766830.13282764垂直总比载g1+g20.108772530.21680779导线0.056126540.082022170.851.200.023771240.034738801.000.010565000.015439471.000.029100080.055027851.001.200.065624500.117389530.041490470.090881510.035609080.085387600.112597860.22368210kV输电线路基本参数1、-70/101×7选中右边的参数复制到左边-70/10计算截面A(mm2)d(mm)P(N)G1(kg/m)E(N/mm2)α(1/℃)破坏应力σp(N/mm2)2、风速m/s冰厚mm风速m/s冰厚mm风速m/s冰厚mm选中右边的参数复制到左边三峡及宜昌地区常用设计气象条件三峡及宜昌地区常用设计气象条件Ⅱ3、比载(N/m.mm2)备注风速不均匀系数α＝风载体形系数C＝g1＝9.81×G1/Ag2＝9.81*0.9πb(b+d)/A×10-3g3＝无冰时风压比载g4(M)＝9.81αCdv2/16/A×10-3g4(15)＝9.81αCdv2/16/A×10-3g4(10)＝9.81αCdv2/16/A×10-3覆冰时风压比载g5＝9.81αC(d+2b)v2/16/A×10-3无冰时综合比载g6(M)＝(g12+g4(M)2)0.5g6(15)＝(g12+g4(15)2)0.5g6(10)＝(g12+g4(10)2)0.5覆冰时综合比载g7＝(g32+g52)0.5导线临界档距计算⑴控制应力117.8573.66⑵气象条件比载气温最低气温117.850.03400569-200.000288550.00028855年平均气温73.660.0340056...
