System Frequency Response Models for the Ecuadorian Interconnected Power System
Modelos de Respuesta de la Frecuencia para el Sistema Nacional Interconectado Ecuatoriano
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SISTEMAS ELÉCTRICOS DE POTENCIA
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System Frequency Response Models for the Ecuadorian Interconnected Power System. (2024). Revista Técnica "energía", 21(1), PP. 22-33. https://doi.org/10.37116/revistaenergia.v21.n1.2024.637
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System Frequency Response Models for the Ecuadorian Interconnected Power System. (2024). Revista Técnica "energía", 21(1), PP. 22-33. https://doi.org/10.37116/revistaenergia.v21.n1.2024.637
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Nelson Granda
Karen Paguanquiza
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This paper presents a methodology, based on frequency response models, to estimate the minimum or maximum value -nadir- that the frequency reaches when a generation - load unbalance occurs in the power system. To this end, the 1st order reduced equivalent model of the generator’s power-frequency control system is determined using the "Parameter Estimator" of Matlab/Simulink. Then, a set of equations coming from the reduced equivalent model is established to estimate the value of the maximum transient frequency deviation and its occurrence time. To illustrate the application of the proposed methodology, the IEEE New England test system has been chosen. Once this is done, the proposed methodology is applied to the Ecuadorian Interconnected Power System. The results of time domain simulations using the PowerFactory software are presented and compared with the results calculated using the developed reduced and analytical models. It is concluded that the proposed methodology estimates with high accuracy the maximum transient frequency deviation and its time of occurrence.
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