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Evaluation of the Accuracy of a Component-Based Aggregat-ed Residential Load Model
Evaluación de la precisión de un modelo agregado de carga residencial basado en componentes
DOI:
https://doi.org/10.15446/ing.investig.121139Keywords:
Aggregation methodology, Coupled Norton Model, Harmonics, Power quality (en)armónicos, Calidad de Energía, Metodología de agregación, Modelo Norton Acoplado (es)
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La distorsión armónica es una de las perturbaciones electromagnéticas más relevantes en los sistemas eléctricos, tanto por amplia propagación como por los diversos efectos adversos que puede generar, tales como el aumento de las pérdidas de energía, la aceleración del envejecimiento de los equipos y fallas operativas, entre otros. En los últimos años, esta perturbación se ha intensificado debido al aumento de dispositivos basados en electrónica de potencia (DEPs) en las redes eléctricas, especialmente en el sector residencial. Aunque se han propuesto diferentes enfoques de modelamiento para analizar el comportamiento armónico individual de estos dispositivos, los modelos utilizados para representar cargas residenciales agregadas suelen simplificarse y no logran captar con precisión el comportamiento armónico agregado. En este artículo, a partir de mediciones experimentales y estimación de mínimos cuadrados (MCO), se desarrolla el modelo Norton acoplado individual para un conjunto típico de cargas residenciales, con el cual se construye un modelo agregado basado en componentes. La precisión de este modelo agregado se evalúa frente a un modelo agregado basado en mediciones del mismo conjunto de DEPs, mostrando un buen desempeño con errores inferiores al 10% en los elementos de la matriz acoplada en frecuencia (MAF). Estos resultados indican que el modelo propuesto es una alternativa viable y precisa para la representación de cargas residenciales agregadas, y constituye una herramienta de gran valor para estudios de análisis armónico.
Harmonic distortion is one of the most significant electromagnetic disturbances in power systems due to its widespread propagation and well-known adverse effects, including increased energy losses, accelerated equipment aging, and operational failures. In recent years, this disturbance has intensified due to the increasing penetration of power electronic devices (PEDs) in electrical networks, particularly in the residential sector. Although different models have been developed to analyze the individual harmonic behavior of these devices, the models commonly used to represent aggregated residential loads are often simplified and fail to accurately capture their aggregate harmonic behavior. In this paper, based on experimental measurements, Least Squares Estimation (LSE) is used to develop an individual Coupled Norton (CN) model for a typical set of residential loads, which is then used to construct a component-based aggregated model. The accuracy of this aggregated model is evaluated against a measurement-based aggregated model for the same set of PEDs, showing good performance with errors below 10% in the elements of the Frequency Coupling Matrix (FCM). These results indicate that the proposed model is a viable and accurate alternative for representing aggregated residential loads and constitutes a valuable tool for harmonic analysis studies.
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Copyright (c) 2026 Fabian Rios Gutierrez, Ana Blanco-Castañeda, Joaquín Caicedo; Jan Meyer; Andrés Romero Quete
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