GENERATOR CONTROL SYSTEM

PURPOSE:To improve transient and static stability by giving an output from a controller conducting multivariable feedback control to a governing system as a correction signal on the basis of various informations observed from a generator and a turbine. CONSTITUTION:A multivariable controller 1 arithmetically operates optimum feedback gains on the basis of a generator-voltage signal Vt(k), a generator- output signal Pe(k), a field-flux signal phif(k), a turbine angular-frequency signal omega(k), a generator phase-angle signal delta(k) and a turbine-opening signal Pm(k), and arithmetically operates a field manipulated variable Ui(k) and a governing manipulated variable Ug(k) with a multivariable control theory. The field manipulated variable Ue(k) is transmitted to a generator excitation system through a limiter 2 and an ignition readjuster 3. The govering system manipulated variable Ug(k) is transmitted to an output from a governer 6 as a correction control signal.