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IEEE 421A

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IEEE 421A 1978 Edition, June 29, 1978 GUIDE FOR IDENTIFICATION, TESTING, AND EVALUATION OF THE DYNAMIC PERFORMANCE OF EXCITATION CONTROL SYSTEMS

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Description / Abstract: This guide includes criteria, definitions, and test procedures for evaluating the dynamic performance of excitation control systems as applied by electric utilities. Primary purposes are to provide a basis for evaluating closed-loop performance of excitation control systems (including both the synchronous machine and its excitation system) for both large and small signal disturbances; confirming the adequacy of mathematical models of excitation systems for use in analytical studies of power systems; specifying methods for performing tests of excitation control systems and their components; and preparing excitation system specifications and additional standards. Portions of this guide will also serve as an educational means for people becoming acquainted with excitation control systems.