Alternators Connected to Infinite Busbars
Alternators Connected to Infinite Busbars:
When an alternator is connected to an infinite busbars, the impedance (or synchronous reactance) of only that alternator is considered.
Let Tsy be the synchronizing torque in newton-metre (N-m).
(i) When there are two alternators is parallel
(ii) When alternator is connected to infinite Busbars
Effect of Load on Synchronizing Power:
In this case, the approximate value of synchronizing power is given by;
E = e.m.f. of alternator/phase
V = busbars voltage/phase
For a lagging p.f,