低压配电系统短路电流计算(第2版).xlsx

低压配电系统短路电流计算(第2版).xlsx

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配配电电系系统统参参数数Rk（m）Xk（m）RP（m）高压系统短路容量（MVA）3000.0530.530.035变压器容量（kVA）630变压器阻抗电压（%）4%2.269.92.26配电母线规格类型铜母线母线长度L1（m）80.2241.041.062一级配电线路形式铜芯电缆规格（mm2或A）9523.27.369.6长度L2（米）100二级配电线路形式铜芯电缆规格（A）2587.27.91225长度L3（米）100三级配电线路形式BV穿钢管规格（A）1020.81.141.6长度L4（米）10电流名称三相短路电流（KA）单相短路电流（KA）阻抗比峰值系数冲击电流（kA）计算公式Ik=230/XK2+RK2Id=220/Xp2+Rp2RK/XKKIch=2*K*Ik短路点K121.52920.9450.2221.80054.803K219.57917.8050.2211.80049.840K37.2202.9521.3711.30013.274K41.9820.7644.2331.3003.644K51.6840.6714.8141.3003.096XXPP（m）（m）0.359.92.22414.8515.92.6备备注注高压侧短路容量（MVA）RSXSRPXP2000.0800.7960.0530.5303000.0530.5300.0350.3505000.0320.3180.0210.210无穷大0.0000.0000.0000.000变压器容量（KVA）阻抗电压RT（m/m）XT（m/m）RP（m/m）31545.3519.585.3540043.8315.543.8350043.0112.443.0163042.269.92.2680061.6711.891.67100061.279.51.27125060.977.620.97160060.715.960.71200060.564.770.56250060.433.820.43XP（m/m）19.5815.5412.449.911.899.57.625.964.773.82变压器容量低压铜排（mm）母线槽（A）Rm（20c）（m/m）Xm（m/m）2004（40x4）+30x40.11200.01742504（40x4）+30x46300.11200.01743154（50x5）+40x46300.07160.16004004（63x6.3）+40x48000.04970.14805004（80x6.3）+50x510000.03730.13006304（80x8）+50x512500.02800.13008004（100x8）+63x6.316000.02240.116010004（125x10）+80x6.320000.01490.104012504（2x100x10）+100x1025000.00900.063516004（2x125x10）+125x1031500.00750.058020004（2x125x10）+125x1040000.00750.058025004（2x125x10）+125x1050000.00750.0580注：

GCS柜母排间距110mm,本表按125间距。

RmP（70c）（m/m）XmP（m/m）0.04460.36600.04460.36600.04070.33400.23780.32200.16580.29000.13280.27800.10200.24600.07340.23400.03920.13400.03670.12850.03670.12850.03670.1285母线额定电流（A）R（m/m）X（m/m）RP（m/m）XP（m/m）2500.10750.04720.24720.10864000.08060.0460.18540.10586300.08310.03820.19120.08768000.06990.03320.16080.076410000.05340.02640.12290.060712500.04010.02020.09220.046516000.03060.01550.07050.035718000.02730.01380.06290.031720000.02390.01190.0550.027425000.01960.00970.04510.022330000.01660.00820.03820.018935000.01370.00690.03140.015940000.0120.0060.02750.013845000.00930.00690.02150.015950000.00770.00780.01780.0179电缆截面（mm2）R（m/m）X（m/m）RP（m/m）XP（m/m）45.5300.09914.4200.19963.7000.0949.2300.193102.2000.0845.9000.178161.3800.0803.5800.164250.8720.0792.2500.159350.6290.0762.0100.156500.4640.0761.3400.155700.3220.0730.9510.149950.2320.0730.6960.14851200.1840.0720.5060.1451500.1490.0710.4710.1451850.1190.0710.3510.1442400.0910.0710.2750.1433000.0720.0710.2210.1422-1200.0920.0360.2530.0732-1500.0750.0360.2360.0732-1850.0600.0360.1760.0722-2400.0450.0360.1380.0722-3000.0360.0350.1110.071截面（mm2）R（m/m）X（m/m）RP（m/m）XP（m/m）1.513.780.1427.560.322.58.440.1316.880.2945.2500.1210.5000.2863.5100.117.0200.26102.0800.114.1600.26161.3100.12.6200.25250.8280.11.6520.23350.5970.11.1940.24500.4410.090.8820.21700.3050.090.6100.22950.2200.090.4400.221200.1740.080.3480.211500.1410.080.2820.211850.1130.080.2260.2