无功补偿计算方法

1、.补偿容量的确定 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 =*P*（tan1tan2）式中：Q 所需补偿的总无功功率，kvar； 平均负荷系数，取0.70.8； P 用户最大负荷，kW； tan1补偿前平均功率因数角 tan2补偿后平均功率因数角或 Q =*P*qq 补偿率，kvar / kW （可从附表中查取）cos1cos20.800.810.820.830.840.850.860.870.880.890.900.910.920.930.940.950.960.500.9811.0081.0351.0601.0861.1171.

2、1381.1661.1921.2191.2461.2761.3051.3381.3681.4041.4420.510.9390.9660.9331.0181.0441.0701.1061.1341.1601.1871.2141.2441.2731.3061.3361.3721.4100.520.8900.9170.9450.9690.9951.0211.0471.0751.1011.1281.1551.1851.2171.2471.2771.3131.3510.530.8190.8760.9030.9280.9540.9801.0061.0341.0601.0871.1141.1441.173

3、1.1201.2061.2361.2720.540.8080.8350.8620.8870.9130.9390.9650.9931.0191.0461.0751.1031.1331.1651.1951.2311.2690.550.7660.7930.8200.8150.8710.8970.8590.9230.9510.9771.0041.0311.0611.0901.1231.1531.1891.2270.560.7280.7550.7820.8070.8290.8590.8850.9130.9390.9660.9911.0231.0521.0851.1151.1511.1890.570.69

4、10.7180.7450.7700.7960.8220.8460.8760.9020.9290.9560.9861.0151.0481.0781.1141.5200.580.6550.6820.7090.7340.7600.7860.8120.8400.8660.8930.9200.9500.9791.0121.0421.0781.1160.590.6180.6450.6720.6970.7230.7490.7750.8030.8290.8560.8830.9130.9420.9751.0051.0411.0790.600.5830.6100.6370.6620.6880.7140.7400.

5、7680.7940.8210.8480.8780.9050.9400.9701.0061.0440.610.5490.5760.6030.6280.6540.6800.7060.7340.7600.7870.8410.8440.8730.9060.9360.9721.0100.620.5150.5470.5600.5940.6200.6400.6720.7000.7260.7530.7800.8100.8390.8720.9020.9380.9740.630.4810.5080.5350.5600.5860.6120.6380.6660.6920.7190.7460.7760.8050.838

6、0.8680.9040.9420.640.4500.4770.5040.5290.5550.5810.6070.6350.6610.6880.7150.7450.7740.8070.8370.8730.911附表：每kW负荷所需无功补偿率值查取表cos1cos20.800.810.820.830.840.850.860.870.880.890.900.910.920.930.940.950.960.650.4170.4440.4710.4960.5220.5480.5740.6020.6280.6550.6820.7120.7410.7740.8040.8400.8780.660.3860.4

7、150.4420.4670.4930.5190.5450.5730.5990.6260.6540.6830.7120.7450.7750.8110.8490.670.3570.3840.4110.4360.4620.4880.5140.5420.5660.5950.6220.6520.6810.7140.7440.7800.8180.680.3270.3540.3810.4060.4320.4580.4840.5120.5380.5650.5940.6220.6510.6840.7170.7500.7880.690.2970.3240.3510.3760.4020.4280.4540.4820

8、.5080.5350.5620.5920.6210.6540.6830.7200.7580.700.2700.2970.3230.3490.3750.4010.4270.4550.4810.5080.5350.5650.5940.6270.6570.6930.7310.710.2410.2680.2950.3200.3460.3720.3980.4260.4520.4790.5060.5360.5650.5980.6280.6640.7200.720.2120.2390.2660.2910.3170.3430.3710.3970.4250.4500.4770.5070.5360.5690.59

9、90.6350.6730.730.1850.2120.2390.2640.2900.3160.3420.3700.3960.4230.4500.4800.5090.5420.5720.6080.6460.740.1570.1840.2110.2360.2620.2880.3150.3420.3680.3950.4250.45200.4810.5140.5460.5800.6180.750.1310.1580.1850.2100.2360.2620.2880.3160.3420.3690.3960.4260.4550.4880.5180.5540.5920.760.1030.1300.1570.

10、1820.2080.2340.2600.2880.3160.3410.3680.3980.4270.4600.4920.5260.5630.770.0780.1050.1320.1570.1830.2090.2350.2630.2890.3160.3430.37300.4020.4350.4650.5010.5390.780.0520.0790.1060.1310.1570.1830.2090.2370.2630.2900.3170.3470.3760.4090.4390.4750.5130.790.0240.0510.0780.1030.1290.1550.1810.2090.2350.2620.2890.3190.3480.3810.4110.4470.4850.800.0260.0520.0780.1040.1300.1570.1830.2100.2380.2660.2940.3260.3550.3870.4210.4580.810.0260.0520.0780.1040.1310.1570.1800.2120.2400.2680.2980.3290.3610.3950.4320.820.0260.0520.0780.1040.1310.1580.1860.2130.2420.2720.3030.3350.3690.4060.830.0260.0520.0790