A CONTROL DEVICE AND METHOD OF A GAS TURBINE ELECTRIC ENERGY PRODUCTION PLANT

摘要

A control device of a gas turbine electric energy production plant (1), which delivers a power (P) at a frequency (fI) presents power control means (15), for controlling the power (P) delivered by the plant (1) by means of a first control signal (U?P) which determines the supply of fuel to a portion (11) of the plant (1) according to a reference power value (PSETNEW), and frequency control means (16), for determining correction values (PFSET) of the reference power value (PSETNEW) according to a frequency error (eF), given by the difference between the plant frequency (fI) and a nominal frequency (fN) which comprise step control means (22) configured to adjust the supply of fuel to the portion (11) of the plant (1) by means of a second control signal (USTEP) concurrent with the first control signal (U?P), when the derivative of the frequency (fI) of the plant (1) assumes values higher than a threshold value (S).