The reduction of power factor will lead to a huge loss of power transmission, and the voltage loss will be affected by reactive power. At the same time, it will reduce the utilization rate of power equipment, waste energy and economy. Therefore, according to the relevant regulations of the power supply department, it is necessary to limit the power factor. In some power supply areas, a certain value needs to be reached, and when it is lower than the specified value, reactive power compensation must be performed.<br>The standard of natural power factor of common residential area is Zero point seven - zero point seven five 。 However, the power factor of residential electricity should be kept at Zero point nine above. When the power factor does not meet the requirements, it is necessary to increase the power factor, and the method of increasing the power factor can be selected correctly, and the motor can be used reasonably, so that the motor will not run under light load or no-load. The transformer capacity can be reasonably selected and the operation mode can be properly adjusted to avoid the transformer's light load or no-load operation<br>
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