Reactive Power Capacitor Compensation-2(Measured power factor)

1. calculate and confirm the power factor $\cos \Phi$:

(Formula 1)

Where:

$P$— Calculated active power of the enterprise

$Q$— Calculated reactive power of the enterprise

$\alpha$, $\beta$— Annual average active and reactive load coefficients, with $\alpha$ranging from 0.7 to 0.75, and $\beta$taken as 0.76.

After artificial compensation, the maximum calculated load power factor should be above 0.9.

For enterprises already in production, the method for determining the average power factor is as follows:

(Formula 2)

Where:

Wm​— Monthly active energy consumption, i.e., the reading of the active energy meter (kWh)

Wrm​— Monthly reactive energy consumption, i.e., the reading of the reactive energy meter (kvarh)

Once the power factor $\cos \Phi$is known, the capacitor capacity Qc​can be determined.

(Formula 3)

The power factor after compensation is:

(Formula 4)

During the calculation of Equation (Formula 4), the relationship between $\cos \Phi$and $\tan \Phi$can be derived from trigonometry:

(Formula 5)