Voltage regulation is given by this approximation
- For Zero voltage regulation: Zero voltage regulation means, Sending end voltage and Receiving end voltage become equal. This case is also known as ideal voltage regulation.
NOTE : Here Reference phasor is
angle between and is negative, means leading power factor ( is leading the voltage )
- For maximum voltage regulation :
Condition for maximum V.R.
[Because Both X and R are Positive]
[ Lagging power factor ≫ Current is lagging to Voltage ]