电线型号LGJ-240/40LGJ-300/40LGJ-300/70LGJ-400/35导线型式普通钢芯铝绞线普通钢芯铝绞线普通钢芯铝绞线普通钢芯铝绞线原始数据电线外径D m0.021660.02394 0.0252 0.02682电线截面S mm2277.75338.99376.61425.2420度时直流电阻 欧/km0.1209 0.096140.094630.07389线路计算风速 m/s0.50.50.50.5环境温度T1 度40404035最高允许温度T2 度70707080交流电阻计算T2时直流电阻 欧/km0.145260.115510.113700.09176中间系数X11.019511.143281.152371.30410中间系数X22.160221.769961.593161.41097集肤效应系数K11.00555 1.00876 1.00904 1.01484铁损效应系数K21.03845 1.03436 1.03215 1.02961交直流电阻比1.04422 1.04342 1.04148 1.04489T2时交流电阻 欧/m0.000150.000120.000120.00010辐射散热功率计算辐射散热系数E1 新线 0.230.230.230.23 旧线 0.900.900.900.90斯-包常数S15.67E-085.67E-085.67E-085.67E-08辐射散热功率WR W/m3.765554.161934.380987.17322 旧线14.7347816.2858117.1429628.06913对流散热功率计算对流散热系数Rf0.028050.028050.028050.02823雷诺常数Re586.03896647.72727681.81818716.34615对流散热功率WF W/m33.1530034.8019635.6785955.15761日照吸热功率计算日照吸热系数As 新线 0.350.350.350.35 旧线 0.900.900.900.90日照强度Js W/m21000100010001000日照吸热功率Ws W/m7.581008.379008.820009.38700 旧线19.4940021.5460022.6800024.13800载流量计算一览表(规程推荐导线载流量计算电线载流量(新线) A439.8503.7513.6743.1电线载流量(旧线) A432.7495.1504.5785.1电线型号LGJ-240/40LGJ-300/40LGJ-300/70LGJ-400/35导线分裂根数4444输送功率(0.95) 10MW142163166258交流电阻的近似计算(不计铁损效应，集肤效应近似按400m m 2以下0.0025，400m m 2以上0.01计)T2时直流电阻 欧/km0.145260.115510.113700.09176T2时交流电阻 欧/km0.145620.115800.113980.09199导线载流量计算电线载流量 A441.6505.1514.2801.5L GJ-400/50L GJ-500/45L GJ-630/55L GJ-720/50L GJ-800/55普通钢芯铝绞线普通钢芯铝绞线普通钢芯铝绞线普通钢芯铝绞线普通钢芯铝绞线0.027630.030.03432 0.03620.0384451.55531.68696.22775870.60.072320.059120.045140.039840.035470.50.50.50.50.54040151515707036.138.1410.086890.071030.048070.042750.038471.318181.457931.668491.776011.882241.328761.03446...
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