Performance characteristics of speed governors

THE PERFORMANCE CHARACTERISTICS of speed governors on automatic extraction turbines as related to the performance characteristics of governors on straight condensing and noncondensing extraction turbines are affected by the characteristics of the turbines themselves. “Steady state regulation” and “overspeed” may require either special treatment or additional mechanism in the governing system in order to maintain acceptable values. The addition of the “extraction pressure regulating system” requires correlation of its action with that of the speed governing system, if the additional duty that otherwise would be imposed on the speed governor is to be avoided.