A novel aggregate load model for studying power system dynamic behavior

TitleA novel aggregate load model for studying power system dynamic behavior
Publication TypeConference Paper
Year of Publication2003
AuthorsLouie, K. W., and J. R. Marti
Conference NameIPEC 2003: Proceedings of the 6th International Power Engineering Conference, Vols 1 and 2
Pagination563-568
PublisherNanyang Technol Univ; IEE Singapore Ctr; Public Utilities Board; Inst Engineers Singapore; Natl Univ Singapore
Conference LocationNANYANG AVENUE, SINGAPORE 639815, SINGAPORE
ISBN Number981-04-8790-8
Keywordsdependent loads, exponent adjustment, network equivalent, new aggregate load model, voltage and frequency
Abstract

This paper presents an aggregate voltage and frequency dependent load model for power system dynamic studies. The model is used to aggregate loads with different data-specification formats, such as exponential and polynomial forms. To improve its accuracy, the model dynamically adjusts the exponents in the given load data. A network equivalent is derived with the load model for a faith topological representation of the original power network structure. The model is valid in the wider ranges of voltage and frequency in load representations than conventional load models. The paper presents the basic equations of the new aggregate load model.

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