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正涵电气
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E-mail：xfzhelec@163.com
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无功补偿容量计算方法 |
| 无功补偿容量计算方法 |
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无功补偿容量的计算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*q
q — 补偿率，kvar / kW （可从附表中查取）
|
cosφ1 |
cosφ2 |
|
0.80 |
0.81 |
0.82 |
0.83 |
0.84 |
0.85 |
0.86 |
0.87 |
0.88 |
0.89 |
0.90 |
0.91 |
0.92 |
0.93 |
0.94 |
0.95 |
0.96 |
|
0.50 |
0.981 |
1.008 |
1.035 |
1.060 |
1.086 |
1.117 |
1.138 |
1.166 |
1.192 |
1.219 |
1.246 |
1.276 |
1.305 |
1.338 |
1.368 |
1.404 |
1.442 |
|
0.51 |
0.939 |
0.966 |
0.933 |
1.018 |
1.044 |
1.070 |
1.106 |
1.134 |
1.160 |
1.187 |
1.214 |
1.244 |
1.273 |
1.306 |
1.336 |
1.372 |
1.410 |
|
0.52 |
0.890 |
0.917 |
0.945 |
0.969 |
0.995 |
1.021 |
1.047 |
1.075 |
1.101 |
1.128 |
1.155 |
1.185 |
1.217 |
1.247 |
1.277 |
1.313 |
1.351 |
|
0.53 |
0.819 |
0.876 |
0.903 |
0.928 |
0.954 |
0.980 |
1.006 |
1.034 |
1.060 |
1.087 |
1.114 |
1.144 |
1.173 |
1.120 |
1.206 |
1.236 |
1.272 |
|
0.54 |
0.808 |
0.835 |
0.862 |
0.887 |
0.913 |
0.939 |
0.965 |
0.993 |
1.019 |
1.046 |
1.075 |
1.103 |
1.133 |
1.165 |
1.195 |
1.231 |
1.269 |
|
0.55 |
0.766 |
0.793 |
0.820 |
0.815 |
0.871 |
0.8970.859 |
0.923 |
0.951 |
0.977 |
1.004 |
1.031 |
1.061 |
1.090 |
1.123 |
1.153 |
1.189 |
1.227 |
|
0.56 |
0.728 |
0.755 |
0.782 |
0.807 |
0.829 |
0.859 |
0.885 |
0.913 |
0.939 |
0.966 |
0.991 |
1.023 |
1.052 |
1.085 |
1.115 |
1.151 |
1.189 |
|
0.57 |
0.691 |
0.718 |
0.745 |
0.770 |
0.796 |
0.822 |
0.846 |
0.876 |
0.902 |
0.929 |
0.956 |
0.986 |
1.015 |
1.048 |
1.078 |
1.114 |
1.520 |
|
0.58 |
0.655 |
0.682 |
0.709 |
0.734 |
0.760 |
0.786 |
0.812 |
0.840 |
0.866 |
0.893 |
0.920 |
0.950 |
0.979 |
1.012 |
1.042 |
1.078 |
1.116 |
|
0.59 |
0.618 |
0.645 |
0.672 |
0.697 |
0.723 |
0.749 |
0.775 |
0.803 |
0.829 |
0.856 |
0.883 |
0.913 |
0.942 |
0.975 |
1.005 |
1.041 |
1.079 |
|
0.60 |
0.583 |
0.610 |
0.637 |
0.662 |
0.688 |
0.714 |
0.740 |
0.768 |
0.794 |
0.821 |
0.848 |
0.878 |
0.905 |
0.940 |
0.970 |
1.006 |
1.044 |
|
0.61 |
0.549 |
0.576 |
0.603 |
0.628 |
0.654 |
0.680 |
0.706 |
0.734 |
0.760 |
0.787 |
0.841 |
0.844 |
0.873 |
0.906 |
0.936 |
0.972 |
1.010 |
|
0.62 |
0.515 |
0.547 |
0.560 |
0.594 |
0.620 |
0.640 |
0.672 |
0.700 |
0.726 |
0.753 |
0.780 |
0.810 |
0.839 |
0.872 |
0.902 |
0.938 |
0.974 |
|
0.63 |
0.481 |
0.508 |
0.535 |
0.560 |
0.586 |
0.612 |
0.638 |
0.666 |
0.692 |
0.719 |
0.746 |
0.776 |
0.805 |
0.838 |
0.868 |
0.904 |
0.942 |
|
0.64 |
0.450 |
0.477 |
0.504 |
0.529 |
0.555 |
0.581 |
0.607 |
0.635 |
0.661 |
0.688 |
0.715 |
0.745 |
0.774 |
0.807 |
0.837 |
0.873 |
0.911 |
附表：每kW负荷所需无功补偿率
值查取表
|
cosφ1 |
cosφ2 |
|
0.80 |
0.81 |
0.82 |
0.83 |
0.84 |
0.85 |
0.86 |
0.87 |
0.88 |
0.89 |
0.90 |
0.91 |
0.92 |
0.93 |
0.94 |
0.95 |
0.96 |
|
0.65 |
0.417 |
0.444 |
0.471 |
0.496 |
0.522 |
0.548 |
0.574 |
0.602 |
0.628 |
0.655 |
0.682 |
0.712 |
0.741 |
0.774 |
0.804 |
0.840 |
0.878 |
|
0.66 |
0.386 |
0.415 |
0.442 |
0.467 |
0.493 |
0.519 |
0.545 |
0.573 |
0.599 |
0.626 |
0.654 |
0.683 |
0.712 |
0.745 |
0.775 |
0.811 |
0.849 |
|
0.67 |
0.357 |
0.384 |
0.411 |
0.436 |
0.462 |
0.488 |
0.514 |
0.542 |
0.566 |
0.595 |
0.622 |
0.652 |
0.681 |
0.714 |
0.744 |
0.780 |
0.818 |
|
0.68 |
0.327 |
0.354 |
0.381 |
0.406 |
0.432 |
0.458 |
0.484 |
0.512 |
0.538 |
0.565 |
0.594 |
0.622 |
0.651 |
0.684 |
0.717 |
0.750 |
0.788 |
|
0.69 |
0.297 |
0.324 |
0.351 |
0.376 |
0.402 |
0.428 |
0.454 |
0.482 |
0.508 |
0.535 |
0.562 |
0.592 |
0.621 |
0.654 |
0.683 |
0.720 |
0.758 |
|
0.70 |
0.270 |
0.297 |
0.323 |
0.349 |
0.375 |
0.401 |
0.427 |
0.455 |
0.481 |
0.508 |
0.535 |
0.565 |
0.594 |
0.627 |
0.657 |
0.693 |
0.731 |
|
0.71 |
0.241 |
0.268 |
0.295 |
0.320 |
0.346 |
0.372 |
0.398 |
0.426 |
0.452 |
0.479 |
0.506 |
0.536 |
0.565 |
0.598 |
0.628 |
0.664 |
0.720 |
|
0.72 |
0.212 |
0.239 |
0.266 |
0.291 |
0.317 |
0.343 |
0.371 |
0.397 |
0.425 |
0.450 |
0.477 |
0.507 |
0.536 |
0.569 |
0.599 |
0.635 |
0.673 |
|
0.73 |
0.185 |
0.212 |
0.239 |
0.264 |
0.290 |
0.316 |
0.342 |
0.370 |
0.396 |
0.423 |
0.450 |
0.480 |
0.509 |
0.542 |
0.572 |
0.608 |
0.646 |
|
0.74 |
0.157 |
0.184 |
0.211 |
0.236 |
0.262 |
0.288 |
0.315 |
0.342 |
0.368 |
0.395 |
0.425 |
0.4520 |
0.481 |
0.514 |
0.546 |
0.580 |
0.618 |
|
0.75 |
0.131 |
0.158 |
0.185 |
0.210 |
0.236 |
0.262 |
0.288 |
0.316 |
0.342 |
0.369 |
0.396 |
0.426 |
0.455 |
0.488 |
0.518 |
0.554 |
0.592 |
|
0.76 |
0.103 |
0.130 |
0.157 |
0.182 |
0.208 |
0.234 |
0.260 |
0.288 |
0.316 |
0.341 |
0.368 |
0.398 |
0.427 |
0.460 |
0.492 |
0.526 |
0.563 |
|
0.77 |
0.078 |
0.105 |
0.132 |
0.157 |
0.183 |
0.209 |
0.235 |
0.263 |
0.289 |
0.316 |
0.343 |
0.3730 |
0.402 |
0.435 |
0.465 |
0.501 |
0.539 |
|
0.78 |
0.052 |
0.079 |
0.106 |
0.131 |
0.157 |
0.183 |
0.209 |
0.237 |
0.263 |
0.290 |
0.317 |
0.347 |
0.376 |
0.409 |
0.439 |
0.475 |
0.513 |
|
0.79 |
0.024 |
0.051 |
0.078 |
0.103 |
0.129 |
0.155 |
0.181 |
0.209 |
0.235 |
0.262 |
0.289 |
0.319 |
0.348 |
0.381 |
0.411 |
0.447 |
0.485 |
|
0.80 |
|
0.026 |
0.052 |
0.078 |
0.104 |
0.130 |
0.157 |
0.183 |
0.210 |
0.238 |
0.266 |
0.294 |
0.326 |
0.355 |
0.387 |
0.421 |
0.458 |
|
0.81 |
|
|
0.026 |
0.052 |
0.078 |
0.104 |
0.131 |
0.157 |
0.180 |
0.212 |
0.240 |
0.268 |
0.298 |
0.329 |
0.361 |
0.395 |
0.432 |
|
0.82 |
|
|
|
0.026 |
0.052 |
0.078 |
0.104 |
0.131 |
0.158 |
0.186 |
0.213 |
0.242 |
0.272<, /SPAN> |
0.303 |
0.335 |
0.369 |
0.406 |
|
0.83 |
|
|
|
|
0.026 |
0.052 |
0.079 |
0.105 |
0.132 |
0.160 |
0.188 |
0.216 |
0.246 |
0.277 |
0.309 |
0.343 |
0.380 |
|
0.84 |
|
|
|
|
|
0.026 |
0.053 |
0.079 |
0.106 |
0.134 |
0.162 |
0.190 |
0.220 |
0.251 |
0.283 |
0.317 |
0.354 |
|
0.85 |
|
|
|
|
|
|
0.026 |
0.053 |
0.080 |
0.107 |
0.135 |
0.164 |
0.194 |
0.225 |
0.257 |
0.291 |
0.328 |
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