高壓網絡電路元件的阻抗1同步電機同步電機的阻抗參數由電機制造廠提供。若缺少數據時，在近似計算中可采用表4中所列的各類同步電機電抗平均值。表4各類同步電機的電抗平均值序號同步電機類型1汽輪發電機≤50MW100～125MW14.517.517.521.07.58.0200MW14.517.58.5300MW17.219.88.42水輪發電機無阻尼繞組時29.045.011.0有阻尼繞組時21.021.59.53同步調相機16.016.58.54同步電動機15.016.08.0注、、表示正序電抗相對值、負序電抗相對值、零序電抗相對值。2異步電動機高、低壓異步電動機的超瞬態電抗相對值可按下式計算（11）式中——異步電動機的啟動電流倍數，由產品樣本查取。3電力變壓器三相雙繞組電力變壓器的電抗標幺值可按表2中有關公式計算。表5列出了常用規格三相雙繞組變壓器的電抗標幺值（Sj＝100MVA）。三相三繞組電力變壓器每個繞組的電抗百分值按下列公式計算3-3三相三繞組變壓器等值變換3-3三相三繞組變壓器等值變換（12）式中——每對繞組的阻抗電壓百分值，其間相互關系見圖3所示。110kV級6300～25000kVA、三相三繞組電力變壓器每個繞組的電抗標幺值見表6所示。表5三相雙繞組電力變壓器的電抗標幺值變壓器容量(kVA)阻抗電壓(%)Sj＝100MVA時電抗標幺值變壓器容量(kVA)阻抗電壓(%)Sj＝100MVA時電抗標幺值35/10.5(6.3)kV10/6.3(15)kV1000125016002000250031504000500063008000100001250016000200006.56.505.204.06252.602.221.751.401.190.940.750.640.500.4020020.0025016.00315412.70740010.005008.007.56304.58.738006.88810005.5012504.40160044110/10.5(6.3)kV20002.7563008000100001250016000200002500010.51.671.310.050.840.660.530.4225005.52.2031501.7540001.3850001.1063000.87表6110kV三相三繞組電力變壓器的電抗標幺值變壓器容量（kVA）630080001000012500160002000025000變壓器容量(kVA)按阻抗電壓uk%的第一種組合方式阻抗電壓uk（%）高中高低中低1710.5617.510.56.51710.561810.56.51810.56.51810.56.51810.56.5高低高中中低按阻抗電壓uk%的第二種組合方式繞組電抗xk（%）高壓中壓低壓10.756.25-0.2510.756.75-0.2510.756.25-0.25117-0.50117-0.50117-0.50117-0.50高壓低壓中壓Sj=100MVA時繞組電抗標幺值X*高壓中壓低壓1.7060.992-0.0401.3440.844-0.0311.0750.625-0.0250.8800.560-0.040.6880.438-0.0310.5500.350-0.0250.4400.280-0.02高壓低壓中壓4電抗器電抗器的電抗標幺值及有名值計算見表2、7所示。5高壓線路對計算要求不十分精確時，可采用8所列各種線路電抗的近似值。如要求較精確，則可查表9～表14。表7NKL型鋁線水泥電抗器的電抗額定電流Ir(A)6kV10kV額定電抗Xr(%)電抗標幺值X*Uj=6.3kVSj=100MVA電抗X(Ω)額定電抗Xr(%)電抗標幺值X*Uj=10.5kVSj=100MVA電抗X(Ω74562.32742.909349124.65495.81860.69280.92381.15471.38561.84752.3094345681.04731.39651.74562.09472.79291.15471.53961.92892.3094079220034568101.30921.74562.18202.618449124.36390.51960.69280.86601.03921.38561.732034568100.78551.04731.30921.57102.09472.61840.86601.15471.44341.73202.30942.886730034568100.87281.16371.45461.74562.32742.90930.34640.46190.57740.69280.92381.154734568100.52370.69820.87281.04731.39651.74560.57740.76980.96231.15471.53961.928940034568100.65460.87281.09101.30921.74562.18200.25980.34640.43300.51960.69280.866034568100.39260.52370.65460.78551.40731.30920.43300.57740.72170.86601.15471.443450034568100.52370.69820.87281.04731.39651.74560.20780.27710.34640.41570.55430.6928345680.31420.41890.52370.62840.83790.34640.46190.57740.69280.92386004568100.58190.72730.87281.16371.45460.23090.28870.34640.46190.57744568100.34910.43640.52370.69820.87280.38490.48110.57740.76980.9623額定電流Ir(A)6kV10kV額定電抗Xr(%)電抗標幺值X*電抗X(Ω)額定電抗Xr(%)電抗標幺值X*電抗X(Ω)7504568100.46550.58190.69280.93101.16370.18480.23090.27710.36950.4619568100.34910.41890.55860.69820.38490.46190.61580.769810004568100.34910.43640.52370.69820.87280.13860.17320.20780.27710.3464568100.26180.31420.41890.52370.28870.34640.46190.5774150068100.34910.46550.58190.13860.18480.230968100.20950.27930.34910.23090.30790.3849200068100.26180.34910.43640.10390.13860.17328100.20950.26180.23090.28873000100.29090.1155表8高壓線路每千米電抗近似值線路種類標稱電壓Un(kV)電抗X(Ω/km)Sj=1000MVA時，電抗標幺值X*。電纜線路610350.070.080.120.1760.0730.009架空線路610351100.350.350.400.400.8820.3170.0290.003注：計算電抗標幺值時，所采用的基準電壓Uj分別為6.3、10.5、37、115kV。表96kV和10kV油浸紙絕緣和不滴流浸漬紙絕緣三芯電力電纜每千米阻抗標稱截面(mm2)6kV10kVt=65℃時線芯交流電阻R(Ω/km)電抗X(Ω/km)Uj=6.3kV、Sj=100MVA時電阻和電抗標幺值t=60℃時線芯交流電阻R(Ω/km)電抗X(Ω/km)Uj=10.5kV、Sj=100MVA時電阻和電抗標幺值R*X*R*X*鋁銅鋁銅鋁銅鋁銅103952.0710.1078.5555.2190.269162.1221.2940.0995.3472610.2502.0851.2720.1101.8971.1580.100251.3580.8280.0884222.0870.2211.3350.8140.0981.2150.7410.089350.9700.5920.0832.4441.4920.2100.9530.5810.0920.8670.5290.084500.6790.4140.0791.7111.0430.2000.6670.4070.0870.6070.3700.079700.4850.2960.0761.2220.7460.1910.4770.2910.0830.4340.2650.075950.3570.2180.0740.9000.5490.1850.3510.2140.0800.3190.1950.0731200.2830.1730.0720.7130.4360.1820.2780.1700.0780.2530.1550.0711500.2260.1380.0720.5700.3480.1800.2220.1360.0770.2020.1240.0701850.1830.1120.0700.4610.2820.1760.1800.1100.0750.1640.1000.0682400.1410.0860.0690.3550.2170.1740.1390.0850.0730.1260.0770.067表106kV和10kV交聯聚乙烯絕緣三芯電力電纜每千米阻抗標稱截面(mm2)t=90℃時線芯交流電阻R(Ω/km)6kV10kV電抗X(Ω/km)Uj=6.3kV、Sj=100MVA時電阻和電抗標幺值電抗X(Ω/km)Uj=10.5kV、Sj=100MVA時電阻和電抗標幺值R*X*R*X*鋁銅鋁銅鋁銅162.3011.4040.1245.7995380.3120.1330.1200.1130.1072.0941.2780.121251.4730.8980.1117122.2630.2801.3400.8170.109351.0520.6420.1052.6511.6180.2640.9570.5840.103500.7360.4490.0991.8551.1310.2490.6700.4090.097

續表標稱截面(mm2)t=90℃時線芯交流電阻R(Ω/km)6kV10kV電抗X(Ω/km)Uj=6.3kV、Sj=100MVA時電阻和電抗標幺值電抗X(Ω/km)Uj=10.5kV、Sj=100MVA時電阻和電抗標幺值鋁銅R*X*R*X*鋁銅鋁銅700.5260.3210.0931.3260.8090.2360.1010.0960.0950.0930.4790.2920.091950.3880.2360.0890.9780.5950.2250.3530.2150.0871200.3070.1870.0870.7740.4710.2190.2790.1700.0871500.2450.1500.0850.6170.3780.2140.2230.1370.0841850.1990.1210.0820.5010.3050.2080.0900.1810.1100.0822400.1530.0940.0800.3860.2370.2020.0870.1390.0860.079表1135kV和110kV電力電纜千米阻抗標稱截面(mm2)35kV110kVt=50℃時線芯交流電阻R(Ω/km)電抗X(Ω/km)Uj=37kV、Sj=100MVA時電阻和電抗標幺值t=50℃時線芯交流電阻R(Ω/km)電抗X(Ω/km)Uj=115kV、Sj=100MVA時電阻和電抗標幺值鋁銅R*X*鋁銅R*X*鋁銅鋁銅700.4600.2800.1320.03360.02040.009640.4600.2800.1800.003470.002120.00136950.3400.2000.1260.02480.01460.009200.3400.2000.1800.002570.001510.001361200.2700.1580.1190.01970.01150.008690.2700.1580.1800.002040.001190.001361500.2100.1230.1160.01530.00900.008470.2100.1230.1800.001590.000930.001361850.1700.1030.1130.01240.00750.008250.1700.1030.1800.001290.000780.00136注：35kV電力電纜為油浸紙絕緣三芯電纜，110kV電力電纜為單芯充油電纜。表1235kV交聯聚乙烯絕緣電力電纜每千米阻抗標稱截面(mm2)35kVt=75℃時線芯交流電阻R(Ω/km)電抗X(Ω/km)Uj=115kV、Sj=100MVA時電阻和電抗標幺值R*X*鋁銅鋁銅3×500.7020.4280.1370.1280.1210.1160.1120.1090.1040.1030.1030.05120.03130.01003×700.5000.3050.03650.02230.00933×950.3700.2250.02700.01640.00883×1200.2920.1780.02130.01300.00853×1500.2340.1430.01710.01040.00823×1850.1890.1160.01380.00850.00803×2400.1460.0900.01070.00660.00763×300.01170.0720.00850.00530.00753×4000.0880.0540.00640.00390.0075表136kV和10kV架空線路每千米阻抗標稱截面(mm2)t=70℃時交流電阻線間幾何均距Dj＝1000mm時電抗線間幾何均距Dj＝1250mm時電抗R(Ω/km)Sj=100MVA的標幺值R*X(Ω/km)Sj=100MVA的標幺值X*X(Ω/km)Sj=100MVA的標幺值X*Uj=6.3kVUj=10.5kVUj=6.3kVUj=10.5kVUj=6.3kVUj=10.5kV鋁銅鋁銅鋁銅162.161.325.44321.961.200.390.980.350.411.030.37251.380.84482.121.260.770.380.960.340.390.980.35350.990.602.491.520.900.550.370.930.340.380.960.34500.690.421.741.060.630.