A power station consists of two synchronous gener at or

Home » Power Systems » Power systems miscellaneous » Question

A power station consists of two synchronous gener at or s A and B of rating 250 M VA and 500 M VA with inertia 1.6 p.u. and 1 p.u. respectively on their own base MVA ratings. The equivalent P.U inertia for the system on 100 MVA common base will be ____________

1. 9 p.u.
2. 9.99 p.u.
3. 9.09 p.u.
4. 0.09 p.u.

Correct Option: A

H₁ S₁ + H₂ S₂ = HS

Equivalent p.u =	250 × 1.6 + 500 × 1	= 9 p.u.
	100