Applying a formula for generator redispatch to damp interarea oscillations using synchrophasors

TL;DR

This paper introduces a new analytic formula for generator redispatch sensitivity to improve damping of interarea oscillations, utilizing synchrophasor data for practical application in power systems.

Contribution

It presents a novel formula for ranking generator pairs for redispatch based on modal sensitivity, derived from synchrophasor measurements.

Findings

Effective damping of interarea modes demonstrated in New England system

Formula accurately identifies optimal generator pairs for redispatch

Method integrates real-time synchrophasor data for dynamic analysis

Abstract

If an interarea oscillatory mode has insufficient damping, generator redispatch can be used to improve its damping. We explain and apply a new analytic formula for the modal sensitivity to rank the best pairs of generators to redispatch. The formula requires some dynamic power system data and we show how to obtain that data from synchrophasor measurements. The application of the formula to damp interarea modes is explained and illustrated with interarea modes of the New England 10-machine power system.