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    无功补偿容量计算

    类别:技术支持 | 更新时间:2017-03-08 10:54:28 | 人气值:

    无功补偿容量计算

    知道用户负载功率KW,功率因数,效率,查下表:如补偿前0.8,补偿后提高到0.96,每1KW需要补偿电容器0.458KVAR

    改善前功因Cosθ1拟改善功因:Cosθ2
    0.800.850.900.910.920.930.940.950.960.970.980.99Unity
    0.500.9821.1121.2481.2761.3061.3371.3691.4031.4401.4811.5291.5901.732
    0.510.9371.0671.2021.2311.2611.2911.3241.3581.3951.4361.4841.5441.687
    0.520.8931.0231.1581.1871.2171.2471.2801.3141.3511.3921.4401.5001.643
    0.530.8500.9801.1161.1441.1741.2051.2371.2711.3081.3491.3971.4581.600
    0.540.8090.9391.0741.1031.1331.1631.1961.2301.2671.3081.3561.4161.559
    0.550.7680.8991.0341.0631.0921.1231.1561.1901.2271.2681.3151.3761.518
    0.560.7290.8600.9951.0241.0531.0841.1161.1511.1881.2291.2761.3371.479
    0.570.6910.8220.9570.9861.0151.0461.0791.1131.1501.1911.2381.2991.441
    0.580.6550.7850.9200.9490.9791.0091.0421.0761.1131.1541.2011.2621.405
    0.590.6180.7490.8840.9130.9420.9731.0061.0401.0771.1181.1651.2261.368
    0.600.5830.7140.8490.8780.9070.9380.9701.0051.0421.0831.1301.1911.333
    0.610.5490.6790.8150.8430.8730.9040.9360.9701.0071.0481.0961.1571.299
    0.620.5150.6460.7810.8100.8390.8700.9030.9370.9741.0151.0621.1231.265
    0.630.4830.6130.7480.7770.8070.8370.8700.9040.9410.9821.0301.0901.233
    0.640.4510.5810.7160.7450.7750.8050.8380.8720.9090.9500.9981.0581.201
    0.650.4190.5490.6850.7140.7430.7740.8060.8400.8770.9190.9661.0271.169
    0.660.3880.5190.6540.6830.7120.7430.7750.8100.8470.8880.9350.9961.138
    0.670.3580.4880.6240.6520.6820.7130.7450.7790.8160.8570.9050.9661.108
    0.680.3280.4590.5940.6230.6520.6830.7150.7500.7870.8280.8750.9361.078
    0.690.2990.4290.5650.5930.6230.6540.6860.7200.7570.7980.8460.9071.049
    0.700.2700.4000.5360.5650.5940.6250.6571.2470.7290.7700.8170.8781.020
    0.710.2420.3720.5080.5360.5660.5970.6290.6630.7000.7410.7890.8490.992
    0.720.2140.3440.4800.5080.5380.5690.6010.6350.6720.7130.7610.8210.964
    0.730.1860.3160.4520.4810.5100.5410.5730.6080.6450.6860.7330.7940.936
    0.740.1590.2890.4250.4530.4830.5140.5460.5800.6170.6580.7060.7660.909
    0.750.1320.2620.3980.4260.4560.4870.5190.5530.5900.6310.6790.7390.882
    0.760.1050.2350.3710.4000.4290.4600.4920.5260.5630.6050.6520.7130.855
    0.770.0790.2090.3440.3730.4030.4330.4660.5000.5370.5780.6260.6860.829
    0.780.0520.1830.3180.3470.3760.4070.4390.4740.5110.5520.5990.6600.802
    0.790.0260.1560.2920.3200.3500.3810.4130.4470.4840.5250.5730.6340.776
    0.80-0.1300.2660.2940.3240.3550.3870.4210.4580.4990.5470.6080.750
    0.81-0.1040.2400.2680.2980.3290.3610.3950.4320.4730.5210.5810.724
    0.82-0.0780.2140.2420.2720.3030.3350.3690.4060.4470.4950.5560.698
    0.83-0.0520.1880.2160.2460.2770.3090.3430.3800.4210.4690.5300.672
    0.84-0.0260.1620.1900.2200.2510.2830.3170.3540.3950.4430.5030.646
    0.85--0.1350.1640.1940.2250.2570.2910.3280.3690.4170.4770.620
    0.86--0.1090.1380.1670.1980.2300.2650.3020.3430.3900.4510.593
    0.87--0.0820.1110.1410.1720.2040.2380.2750.3160.3640.4240.567
    0.88--0.0550.0840.1140.1450.1770.2110.2480.2890.3370.3970.540
    0.89--0.0280.0570.0860.1170.1490.1840.2210.2620.3090.3700.512
    0.90---0.0290.0580.0890.1210.1560.1930.2340.2810.3420.484
    0.91----0.0300.0600.0930.1270.1640.2050.2530.3130.456
    0.92-----0.0310.0630.0970.1340.1750.2230.2840.426
    0.93------0.0320.0670.1040.1450.1920.2530.395
    0.94-------0.0340.0710.1120.1600.2200.363
    0.95--------0.0370.0780.1260.1860.329
    0.96---------0.0410.0890.1490.292
    0.97----------0.0480.1080.251
    0.98-----------0.0610.203
    0.99------------0.142

    计算出补偿容量后,在计算装机容量,如系统运行电压400V,电容器额定电压450V,如公式:(0.45*0.45)/(0.4*0.4)*补偿容量=电容器装机容量。负载波动不大可选用接触器投切方式,负载波动大选用可控硅投切。


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    关键字: 无功补偿
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