For resistive loads, the reactive power, which the capacitors must supply to regulate the voltage, is not easy to calculate. In this experiment, we shall determine the reactive power by trial and error, adjusting the capacitors until the receiver end voltage is equal to the sender end voltage.
Finally, for loads which draw both real and reactive power(they are the most common) the capacitors must be tailored to compensate first, for the inductive component of the load and second, for the resistive component.