摇摆角曲线计算书(精品).doc

摇摆角曲线计算书一、 计算说明1、 计算参数1.1 工程名称： 500kV线路工程1.2 电压等级：500kV 最大风速：33m/s1.3 计算塔型：ZB441 1.4 导线参数：导线型号4×JLHA2/G1A-400-54/7525.0032.783.8278.61125.8323.8271.5 导线应力：10098.35104.78106.2198.35146.0920071.3276.1482.6771.32157.3030050.8353.2462.7750.83157.3040044.7746.4456.0944.77157.3050042.3543.7653.2942.35157.301.6 绝缘子参数：绝缘子型号类型联数片数串长串重受风面积金具面积U100BP玻璃型双联276.75506500.00000.03000.10001.7 绝缘子串最大允许摇摆角：外过电压：9.00°内过电压：21.00°运行电压：45.00°带电作业：9.00°2、 计算公式（手册P604）设：，，得：式中：—最小允许垂直档距，m； — 外过、内过、运行、带电工况时的绝缘子串风压，N；—导线分裂数；— 外过、内过、运行、带电工况时的导线应力，N/mm2；— 最大弧垂时的导线应力，N/mm2；— 导线单位荷载，N/m；— 外过、内过、运行、带电工况时的导线单位风荷载，N/m；—水平档距，m。

二、 计算过程1、 绝缘子串单位风压外过电压：＝9.81×（0.0300×54+0.1000）×102/16＝105.46N 同理得： 内过电压： PJ(15) ＝9.81×（0.0300×54+0.1000）×152/16＝237.28N 运行电压： PJ(33) ＝9.81×（0.0300×54+0.1000）×332/16＝1148.43N 带电作业： ＝9.81×（0.0300×54+0.1000）×102/16＝105.46N2、 导线单位风荷载外过电压： P4(10)＝γ4(10)S＝3.83×10-3×525.00＝2.01内过电压： P4(15)＝γ4(15)S＝8.61×10-3×525.00＝4.52运行电压： P4(33)＝γ4(33S＝25.83×10-3×525.00＝13.56带电作业： P4(10)＝γ4(10)S＝3.83×10-3×525.00＝2.01导线单位荷载： Pd＝γ1S＝32.78×10-3×525.00＝17.213、 摇摆角曲线计算3.1 外过电压A=-729.27 B=-4.52 C=4.63lpσ10(外过)/ σdClvd=A/C+[(B+C)/C] ×lhlhlvdlvd/ lh1000.6711.59-62.946+0.610×lh100-1.99-0.0201000.6711.59-62.946+0.610×lh500241.810.4842000.457.80-93.463+0.420×lh100-51.44-0.5142000.457.80-93.463+0.420×lh500116.640.2333000.325.56-131.138+0.186×lh100-112.49-1.1253000.325.56-131.138+0.186×lh500-37.90-0.0764000.284.90-148.889+0.076×lh100-141.25-1.4134000.284.90-148.889+0.076×lh500-110.71-0.2215000.274.63-157.397+0.024×lh100-155.04-1.5505000.274.63-157.397+0.024×lh500-145.61-0.2913.2 内过电压：A=-735.23 B=-5.43 C=4.79lpσ15(内过)/ σdClvd=A/C+[(B+C)/C] ×lhlhlvdlvd/ lh1000.7212.34-59.566+0.560×lh100-3.58-0.0361000.7212.34-59.566+0.560×lh500220.370.4412000.488.33-88.262+0.348×lh100-53.48-0.5352000.488.33-88.262+0.348×lh50085.660.1713000.345.82-126.226+0.067×lh100-119.49-1.1953000.345.82-126.226+0.067×lh500-92.55-0.1854000.305.08-144.708+-0.069×lh100-151.63-1.5164000.305.08-144.708+-0.069×lh500-179.32-0.3595000.284.79-153.571+-0.135×lh100-167.04-1.6705000.284.79-153.571+-0.135×lh500-220.92-0.4423.3 运行电压：A=-668.95 B=-3.65 C=5.83lpσ33/ σdClvd=A/C+[(B+C)/C] ×lhlhlvdlvd/ lh1000.7312.51-53.466+0.708×lh10017.380.1741000.7312.51-53.466+0.708×lh500300.760.6022000.539.04-73.961+0.597×lh100-14.29-0.1432000.539.04-73.961+0.597×lh500224.390.4493000.406.87-97.409+0.469×lh100-50.53-0.5053000.406.87-97.409+0.469×lh500137.010.2744000.366.14-109.010+0.406×lh100-68.45-0.6854000.366.14-109.010+0.406×lh50093.780.1885000.345.83-114.738+0.374×lh100-77.30-0.7735000.345.83-114.738+0.374×lh50072.440.1453.4 带电作业A=-729.27 B=-4.52 C=4.63lpσ10(带电)/ σdClvd=A/C+[(B+C)/C] ×lhlhlvdlvd/ lh1000.6711.59-62.946+0.610×lh100-1.99-0.0201000.6711.59-62.946+0.610×lh500241.810.4842000.457.80-93.463+0.420×lh100-51.44-0.5142000.457.80-93.463+0.420×lh500116.640.2333000.325.56-131.138+0.186×lh100-112.49-1.1253000.325.56-131.138+0.186×lh500-37.90-0.0764000.284.90-148.889+0.076×lh100-141.25-1.4134000.284.90-148.889+0.076×lh500-110.71-0.2215000.274.63-157.397+0.024×lh100-155.04-1.5505000.274.63-157.397+0.024×lh500-145.61-0.291三、 结论经计算，ZB441塔的最大摇摆角均由运行电压工况控制。

四、 Kv系数表由摇摆角计算结果，得各代表档距下不同水平档距对应的Kv系数如下表所示：Lp=100mLp=200mLp=300mLp=400mLp=500mlhlvdKv系数lvdKv系数lvdKv系数lvdKv系数lvdKv系数20088.220.44145.380.227-3.64-0.018-27.89-0.139-39.87-0.19921095.310.45451.350.2451.050.005-23.84-0.114-36.12-0.172220102.390.46557.310.2615.740.026-19.78-0.090-32.38-0.147230109.480.47663.280.27510.420.045-15.73-0.068-28.64-0.125240116.560.48669.250.28915.110.063-11.67-0.049-24.89-0.104250123.650.49575.210.30119.800.079-7.62-0.030-21.15-0.085260130.730.50381.180.31224.490.094-3.56-0.014-17.41-0.067270137.820.51087.150.32329.180.1080.500.002-13.66-0.051280144.900.51893.110.33333.870.1214.550.016-9.92-0.035290151.990.52499.080.34238.550.1338.610.030-6.18-0.021300159.070.530105.050.35043.240.14412.660。