CONSTRUCTION OF GENERATOR CAPABILITY A CURVES

Potier reactance dependence on the load and
the new method for its determination
Fig. 4: Vector diagrams of electromotive forces (e P ) and (e l ), and procedure for determining the Potier reactance (x P )
- x P,90 (i an
- x Pn for the rated generator regime (u = u n , i = i n and φ = φ n )f ), from 1-6;
16
an sinφ n ) for the reactive load with armature current i a,90 = i an sinφ n u=u n , and φ = 90 o ), from 7-8,
x Pn ≈ x P,90
P,90 (i an
an sinφ n )