CONSTRUCTION OF GENERATOR CAPABILITY A CURVES

Introduction
• Capability curves, P G -Q G curves, Figure 1, are necessary to the
operating stuff.
• The most important part of the curve is the part with coordinates
(Q G ≥ Q G,N , P G ≤ P G,N ) which defines the generator regime with
increased reactive power.
• Significant deviations of capability curves, compared to
manufacturers’, were obtained during the extensive testing and
research for generators in U.S. (Figure 1).