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The dynamic stability assessment (DSA) application (or a suite of applications) executes in near real time to assist in determining stability‐related system operating limits using a snapshot of the real‐time system (i.e. current state estimator output). It may also provide an indication of dynamic stability margin for the most critical fault/contingency condition.

DSA is different from offline stability analysis tools usually used for medium‐ or long‐term studies [37–39]. However, if such tools are used by operators studying near real‐time snapshots to aid in voltage stability evaluation, these tools should be included as part of the DSA suite.

For more background material, the reader is referred to [40–42].