IEEE Power & Energy Magazine - Spanish - May/June 2022 - 84

combinar un conocimiento previo de la física interna con el
aprendizaje basado en las mediciones para lograr el objetivo
de la identificación del modelo. Los modelos pueden ser no
lineales.
El principal problema de la identificación de caja gris es
que los datos de medición podrían no contener suficiente
información sobre los parámetros. Esto conlleva problemas
de estimación mal condicionados. De ser así, el problema de
estimación se puede formular para estimar un subconjunto
de los parámetros. Las cuestiones principales en los problemas
de optimización no lineal son los algoritmos, la convergencia
y el óptimo local. Para la estimación de parámetros,
un óptimo local significa que los parámetros identificados
podrían estar lejos de los verdaderos. El resultado estimado
podría tener un grado bajo de coincidencia con el resultado
medido. En consecuencia, se han dedicado muchos esfuerzos
a perfeccionar la formulación del problema de optimización.
La optimización es una de las tecnologías clave en la identificación
de cajas grises. Un logro importante de los últimos
años es la adopción de técnicas de programación convexa en
la formulación y resolución de problemas de optimización.
20
40
-40
-20
100
200
-200
100
20
40
-40
-20
100
200
-200
100
Frecuencia (Hz)
(a)
figura 7. (a) Resultados del ajuste de datos en el dominio de la frecuencia. Línea azul continua: modelo; cruces negras:
mediciones. Condición de funcionamiento: Caso 3 donde P = 0 MW, Q = 500 kVar. (Continúa)
84
ieee power & energy magazine
mayo/junio 2022
102
102
200
-200
100
Frecuencia (Hz)
102
Yqd
102
20
40
-40
-20
100
102
Yqq
102
200
-200
100
102
Por otro lado, la solución de un problema de optimización
convexo es el óptimo global, lo que asegura que los parámetros
identificados produzcan los mejores resultados de
coincidencia.
Modelado IBR: una mirada al futuro
La sexta aplicación es el modelado de la IBR a partir de
datos. Utilizamos un inversor de 2.3 MVA como ejemplo
para demostrar la tecnología de vanguardia en la identificación
de modelos IBR de caja negra, y damos nuestra perspectiva
sobre los desafíos que se deben abordar en el modelado
IBR.
Identificación del modelo de admitancia dq
Para las IBR, la tecnología de medición de la admitancia dq
es una tecnología avanzada. La capacidad de medición se
puede realizar tanto en experimentos de software como de
hardware con la disponibilidad de convertidores avanzados
de alta potencia y sensores de media tensión.
En la figura 4, se muestra un banco de pruebas de medición
instalado en el Campus Flatirons del Laboratorio
Ydd
20
40
-40
-20
100
102
Ydq
Fase (grados)
Mag. (dB)
Fase (grados)
Mag. (dB)
Fase (grados)
Mag. (dB)
Fase (grados)
Mag. (dB)

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
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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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