Typical value of Xd in AC generators
Typical value of Xd in AC generators
(OP)
Can any one tell me the typical value of Xd of an AC hydro-generator with the following data:
750RPM, 1.7MW, PF=0.9,6.3kV
Generally I want to know the criteria for selection of Xd or in other words teh SCR of the AC generators?
750RPM, 1.7MW, PF=0.9,6.3kV
Generally I want to know the criteria for selection of Xd or in other words teh SCR of the AC generators?






RE: Typical value of Xd in AC generators
Xd-synch: Avg: 1.25 Range: 0.6-1.5
Xd-transient: Avg: 0.3 Range: 0.2-0.5
Xd-subtransient: Avg: 0.2 Range: 0.13-0.32 (with dampers)
Xd-subtransient: Avg: 0.3 Range: 0.2-0.5 (without dampers)
All in p.u. in rated kVA base.
RE: Typical value of Xd in AC generators
a-Without damper winding……………..16 (16-50)%
b-With damper wedges …………………20(13-32)%