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Synchronous generator: Capability curves
The capabilty curves of a synchronous generator operating at rated voltage
V give the maximum active- and reactive-power loadings
that can be suplied without exceeding the KVA rating (armature heating limit) or
the field heating limit. Dragging point R which establishes the rated operating
conditions changes the power factor. The slider KVA controls the rating.
Dragging point A shows the effects of machine reactance,
explicitly y(A) = -V/X. The stabilty limit is reached when δ = 90°.
©
M.
Riaz |