Power factor is an important technical indicator of the power system. It represents the ratio of active power to apparent power in an AC circuit. This ratio is usually expressed as a cosine function (cosφ). The size of the power factor reflects the energy utilization efficiency of the power supply output.
If the power factor is too high, that is, the reactive power is too low, it will reduce the reactive power margin of the system and affect the stability of the circuit. Although it can improve economy, in the long run, this is at the expense of increasing the probability of accidents. Once an emergency occurs, the circuit may not be able to withstand small disturbances or oscillations and may lose synchronization. In addition, an excessively high power factor will also cause the generator terminal voltage to decrease, which will affect the factory motor. If an accident occurs, the entire system may lose stability and collapse.
In the power system, excessive power factor will cause changes in current and voltage waveforms, thereby increasing the complexity of the power system, causing difficulty in the power regulation process, poor regulation accuracy, and stability problems. At the same time, an excessively high power factor can also cause overloading of the transformer, shorten the life of the equipment, and even cause problems such as overheating and explosion. In addition, an excessively high power factor will cause a waste of energy in the power system, because the reactive current in the system will increase, and reactive current does not generate power, which is a great burden on the power supply system.
Power factor correction equipments:
1. LV APFC Panel
2. LV SVG
3. MV SVG
4. MV APFC Panel
