Inter-area oscillation damping with power system stabilizers and synchronized phasor measurements

Low-frequency oscillations are detrimental to the goals of maximum power transfer and optimal power system security. A contemporary solution to this problem is the addition of power system stabilizers to the automatic voltage regulators on the generators in the power system. The damping provided by this additional stabilizer provides the means to reduce the inhibiting effects of the oscillations. A novel modification of this controller is the inclusion in the feedback loop of information from a remote source. In this manner, the controller acts on the changes from the local source and the remote source. As is demonstrated, this yields a controller capable of more rapidly diminishing the oscillations in a test power system.