damping of system oscillatory modes by a phase compensated gas turbine governor

the proliferation of gas turbines in power systems increases the scope for taking advantage of mechanical torque control for improved network damping. this paper describes a phase compensated governor for a gas turbine and explores its potential contributions to system damping in a multimachine context. it is shown that the inclusion of phase compensation in the governor control loop is capable of achieving dynamic stability for the system without the need of a power system stabilizer (pss) in the generator excitation control loop and without adversely influencing terminal voltage control. in additio , it is demonstrated that a phase compensated governor (pcg) is also capable of significantly improving transient stability and by complementing the effectiveness of a conventional pss, enables a superior overall contribution to network damping.