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Apparent impedance measuring systems (AIMS)

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

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

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