27.08.2015 Views

CONSTRUCTION OF GENERATOR CAPABILITY A CURVES

construction of generator ca atcs ca atcs capability curves

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Conclusion<br />

• It has been established that manufacturers' P-Q curve for generator<br />

GTH 360 gives overestimated reactive power values by 2%, 4%<br />

and 6%, for reduced active power: 250MW(0.71P G,N ),<br />

200MW( 0.581P G,N ) and 50MW, respectively.<br />

• Similar deviations were observed during the extensive testing and<br />

research for newer generators in the U.S.<br />

• Therefore, it is recommended to update P-Q curves every 5-6 years<br />

or after major repairs.

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