Dynamic equivalencing supported by load disaggregation via harmonic current analysis

Barzegkar-Ntovom, Georgios A. and Papadopoulos, Theofilos A. and Pavlakis, Asthansios S. and Kontis, Eleftherios O. and Syed, Mazheruddin H. and Guillo-Sansano, Efren and Burt, Graeme M.; (2021) Dynamic equivalencing supported by load disaggregation via harmonic current analysis. In: 2021 IEEE Madrid PowerTech. IEEE, ESP. ISBN 9781665435970 (https://doi.org/10.1109/PowerTech46648.2021.949489...)

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The time-varying composition of power system loads influences the robustness of measurement-based dynamic equivalent models, constituting them valid only for specific operating conditions. To overcome this issue, in this paper, a new generic dynamic equivalencing method, utilizing load disaggregation, is proposed. Load disaggregation by analyzing the aggregated harmonic current content is used to estimate the load composition of a distribution network, providing higher visibility and information regarding its operational condition. In this sense, representative sets of dynamic load model parameters are obtained for different loading conditions using a clustering algorithm. The accuracy and robustness of the proposed method is assessed using laboratory measurements.