Normally 0.8 to 0.95 is suitable. The impact of being too high or too low can be compared to a bucket carrying water. The water is like the work we need, and the bucket is like the reactive power. Only when there is a bucket can we lift the water.
But too high a power factor is like filling a very full bucket. It doesn't matter if it's stable. Once there is a slight disturbance, the water will flow easily; it also has weight. and consumes energy, so the efficiency is low; if it is installed in 8 or 9 points and is not afraid of disturbances, the efficiency will be higher;
The size of the power factor is related to the load properties of the circuit. For example, the power factor of resistive loads such as incandescent light bulbs and resistance ovens is 1. Typically the power factor of circuits. with inductive loads is less than 1.
The factorr of power is a coefficient which measures the efficiency of electrical equipment. A low power factor indicates that the circuit uses significant reactive power for alternating magnetic field conversion, thereby reducing equipment utilization and increasing line power losses.
Detailed information:
Each motor system consumes two main powers, namely the power real active (unit: watts) and reactive reactive power (unit: watts). Power factor is the ratio of useful work to total power. The higher the power factor, the higher the ratio of useful power to total power, and the system operates more efficiently.
Nonlinear loads distort the current waveform from a sine wave to other waveforms. In addition to the frequency of the original power supply (frequency fondamental), the input current of a nonlinear load also contains many high-frequency harmonic current components. Filters composed of linear components such as capacitors and inductors can reduce harmonic currents entering the electrical system from the load end.
Capacitors connected in parallel to the line for reactive power compensation will amplify the harmonics, making the system voltage and current distortion more serious. In addition, the harmonic current superimposed on the fundamental current of the capacitor will increase the effective current value of the capacitor, causing an increase in temperature and reducing the life of the capacitor.
Baidu Encyclopedia - Power Factor