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Apparent impedance measuring systems (AIMS)

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4 Author(s)
B. L. Agrawal ; Arizona Public Service Co., Phoenix, AZ, USA ; J. A. Demcko ; R. G. Farmer ; D. A. Selin

For the analysis of subsynchronous resonance, computer models of an electric system have generally been based on a modified 60 Hz model with short-circuit equivalents for power sources and with loads neglected. Due to the importance of validating the electric systems model, AIMS has been developed to measure the apparent impedance as a function of frequency seen at the terminals of the study generator. AIMS has been successfully applied to an extensive power system. A description is given of AIMS and the significant modeling improvement realized by it application

Published in:

IEEE Transactions on Power Systems  (Volume:4 ,  Issue: 2 )