IEEE Power & Energy Magazine - Spanish - May/June 2022 - 80

Aplicación 2: identificación del modelo de
carga agregada
A nivel de sistema eléctrico de gran porte, el modelado de
la carga se ocupa de modelar la carga agregada para que
el rendimiento del modelo informático coincida con las
mediciones de campo. Esta aplicación de la identificación
de los parámetros del modelo de carga es también por lo
general un problema de identificación del modelo de caja
gris. Antes de 1990, las cargas se representaban mediante
modelos estáticos en paquetes de software informático.
Así, el modelo ZIP asume que el consumo total de potencia
real de las cargas agregadas es una combinación de
componentes de impedancia constante (Z), corriente
constante (I) y potencia constante (P). A partir de finales
de los años 80, se desarrollaron modelos dinámicos de
la carga para mejorar la precisión del modelado del sistema.
Los datos del dominio del tiempo se han utilizado
para identificar los modelos de carga. En la década de
1990, un proyecto de investigación que se llevó a cabo en
la subestación de Panchiao, en el sistema eléctrico de Taiwán,
demostró que el uso de la representación de primer
orden de la relación entre la tensión y la potencia real no
puede proporcionar un buen ajuste a los datos de medición
de campo antes/después de una falla monofásica. Por
lo tanto, se utilizaron modelos de orden superior (segundo
y tercero), y la precisión de la coincidencia mejoró de
manera significativa. El proceso de identificación del
modelo incluyó tres etapas clave:
1) Determinar la estructura de la función de transferencia
a partir de los conocimientos previos.
2) Convertir la función de transferencia en su modelo de
error de predicción en tiempo discreto.

IEEE Power & Energy Magazine - Spanish - May/June 2022

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - Spanish - May/June 2022

Contents
IEEE Power & Energy Magazine - Spanish - May/June 2022 - Cover1
IEEE Power & Energy Magazine - Spanish - May/June 2022 - Cover2
IEEE Power & Energy Magazine - Spanish - May/June 2022 - Contents
IEEE Power & Energy Magazine - Spanish - May/June 2022 - 2
IEEE Power & Energy Magazine - Spanish - May/June 2022 - 3
IEEE Power & Energy Magazine - Spanish - May/June 2022 - 4
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IEEE Power & Energy Magazine - Spanish - May/June 2022 - Cover3
IEEE Power & Energy Magazine - Spanish - May/June 2022 - Cover4
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