The major effect of poor power factor is higher value of line current. We know that power factor (pf) is an important parameter for calculation of power in an AC circuit. For a given power and voltage, the current flowing through the line is inversely proportional to the power factor. This means that a poor power factor i.e. low power factor will result in higher load current and hence higher losses.
Thus it is always desirable to achieve unity power factor. But it is not possible to design equipment having pf unity. But efforts are made to achieve unity power factor by power factor improvement using correction devices like Capacitor Banks or Static Var Generator.
Keeping all the disadvantages of poor power factor in mind, we can realize the necessity of power factor correction or improvement. Power factor improvement not only eliminates the problems associated with low power factor but it also makes the system economic. Power factor can be improved by application of either of capacitor banks, Static Var Generator SVG or Phase advancer.
Suppose an industry have existing pf value of 0.7. An improvement in its value to 0.99 is desired. Then either we may connect a capacitor bank, or Static Var Generator SVG or Hybrid Var Compensation in parallel with the load. The value of the correction capacitor or SVG Static Var Generator may be calculated by power factor correction formula. If you need how to calculate, contact with us [email protected]
YTPQC-SVG Static VAr Generator
Based on the principle of voltage source inverter, YTPQC-SVG Static Var Generator uses insulated gate bipolar transistor (IGBT) to control the magnitude and phase of inverter AC voltage, so as to achieve the purpose of reactive power compensation and 3 phase load balancing . Because the switching frequency of IGBT is very high (up to 25.6kHz), SVG can compensate rapid reactive loads and achieve quite high compensation accuracy. SVG is the best product in the field of reactive power control.
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