Aggregation of exciter models for constructing power system dynamic equivalents

• Published in: IEEE transactions on power systems Vol. 13; no. 3; pp. 782 - 788
• Main Authors: Galarza, R.J., Chow, J.H., Price, W.W., Hargrave, A.W., Hirsch, P.M.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.08.1998; Institute of Electrical and Electronics Engineers
• Subjects: Aggregates; Applied sciences; Electrical engineering. Electrical power engineering; Electrical machines; Electrical power engineering; Exact sciences and technology; Power engineering and energy; Power generation; Power networks and lines; Power system analysis computing; Power system dynamics; Power system modeling; Power system reliability; Power system simulation; Power system stability; Power system transients; Regulation and control; Special rotating machines; Theory. Simulation; Exciter; Sensitivity analysis; Dynamic characteristic; Stability; Electroenergetics; Coherence; Theoretical study; Trajectory; Aggregate model; Equivalence principle
• ISSN: 0885-8950; 1558-0679
• DOI: 10.1109/59.708632

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.