1, the inductive device is the main consumer of reactive power, according to statistics in industrial and mining enterprises in the asynchronous motor reactive power consumption accounted for 60% of all reactive power 70%, no-load operation and accounted for the total reactive power consumption of the motor Of 60% to 70%. So to improve the power factor of the induction motor to prevent the motor from running to increase the load rate;
2, the transformer reactive power consumption of about 10% of the rated capacity of 15%, and its no-load reactive power is about full load of 1/3, therefore, in order to improve the power system and enterprise power factor, the transformer should not No-load operation or long-term low-load operation;
3, the supply voltage is higher than the rated value of 10%, due to the saturation of the magnetic circuit, the reactive power will increase by about 35%, when the supply voltage is lower than the rated value, the reactive power is reduced and the power factor is improved. But the power supply voltage will affect the normal work of the electrical equipment. Therefore, measures should be taken to keep the power supply voltage of the power system as stable as possible.
