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Aggregation of exciter models for constructing power system dynamic equivalents

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5 Author(s)
Galarza, R.J. ; Dept. of Electr. Power Eng., Rensselaer Polytech. Inst., Troy, NY, USA ; Chow, J.H. ; Price, W.W. ; Hargrave, A.W.
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Constructing a dynamic equivalent for a power system involves several steps: the partition of the system into coherent areas, the coherent area aggregation, and the aggregation of the coherent generators and their control devices. In this paper we investigate the aggregation of exciter models. A trajectory sensitivity method is used to tune the aggregate exciter parameters of the reduced model. The optimal results are used to evaluate the aggregation from the DYNRED program and a weighted MVA method. A three-machine system with one coherent area satisfying the theoretical coherency conditions is used to investigate the impact of the variations of the individual generator, network, and exciter parameters on the aggregate exciter model parameters. The results are then applied to the exciter aggregation of a larger 48-machine system

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Power Systems, IEEE Transactions on  (Volume:13 ,  Issue: 3 )