无功补偿容量计算方法及表.doc

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1、无功补偿容量计算方法电气系统无功补偿计算比较复杂,这里是我搜集整理的简单计算公式以及查表法计算无功补偿.补偿容量的确定可以根据负荷的最大功率、补偿前的功率因数及要求补偿后达到的功率因数，用下式计算确定：Q=α*P*（tanφ1—tanφ2）式中：Q—所需补偿的总无功功率，kvar；α—平均负荷系数，取0.7~0.8；P—用户最大负荷，kW；tanφ1—补偿前平均功率因数角tanφ2—补偿后平均功率因数角或Q=α*P*qq—补偿率，kvar/kW（可从附表中查取）cosφ1　　cosφ20.800.810.820.830.840.850.860.870.8

2、80.890.900.910.920.930.940.950.960.500.9811.0081.0351.0601.0861.1171.1381.1661.1921.2191.2461.2761.3051.3381.3681.4041.4420.510.9390.9660.9331.0181.0441.0701.1061.1341.1601.1871.2141.2441.2731.3061.3361.3721.4100.520.8900.9170.9450.9690.9951.0211.0471.0751.1011.1281.1551.1851.217

3、1.2471.2771.3131.3510.530.8190.8760.9030.9280.9540.9801.0061.0341.0601.0871.1141.1441.1731.1201.2061.2361.2720.540.8080.8350.8620.8870.9130.9390.9650.9931.0191.0461.0751.1031.1331.1651.1951.2311.2690.550.7660.7930.8200.8150.8710.8970.8590.9230.9510.9771.0041.0311.0611.0901.1231.1

4、531.1891.2270.560.7280.7550.7820.8070.8290.8590.8850.9130.9390.9660.9911.0231.0521.0851.1151.1511.1890.570.6910.7180.7450.7700.7960.8220.8460.8760.9020.9290.9560.9861.0151.0481.0781.1141.5200.580.6550.6820.7090.7340.7600.7860.8120.8400.8660.8930.9200.9500.9791.0121.0421.0781.1160

5、.590.6180.6450.6720.6970.7230.7490.7750.8030.8290.8560.8830.9130.9420.9751.0051.0411.0790.600.5830.6100.6370.6620.6880.7140.7400.7680.7940.8210.8480.8780.9050.9400.9701.0061.0440.610.5490.5760.6030.6280.6540.6800.7060.7340.7600.7870.8410.8440.8730.9060.9360.9721.0100.620.5150.547

6、0.5600.5940.6200.6400.6720.7000.7260.7530.7800.8100.8390.8720.9020.9380.9740.630.4810.5080.5350.5600.5860.6120.6380.6660.6920.7190.7460.7760.8050.8380.8680.9040.9420.640.4500.4770.5040.5290.5550.5810.6070.6350.6610.6880.7150.7450.7740.8070.8370.8730.911附表：每kW负荷所需无功补偿率值查取表cosφ1　　c

7、osφ20.800.810.820.830.840.850.860.870.880.890.900.910.920.930.940.950.960.650.4170.4440.4710.4960.5220.5480.5740.6020.6280.6550.6820.7120.7410.7740.8040.8400.8780.660.3860.4150.4420.4670.4930.5190.5450.5730.5990.6260.6540.6830.7120.7450.7750.8110.8490.670.3570.3840.4110.4360.4620

8、.4880.5140.5420.5660.5950.6220.6520.6810