Damping of system oscillatory modes by a phase compensated gas turbine governor |
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Authors: | SK Yee JV Milanovi? FM Hughes |
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Affiliation: | 1. University of Manchester, P.O. Box 88, Sackville St, Manchester M60 1QD, United Kingdom;2. Independent Consultant, United Kingdom |
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Abstract: | 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 addition, 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. |
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Keywords: | Governor Phase compensation Stability System modes Controller Gas turbines |
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