IEEE Power & Energy Magazine - Spanish - May/June 2021 - 60

distribuida tiene múltiples nodos fuente. La protección de
una microrred distribuida es más difícil que la de una centralizada
porque el sistema de seguridad debe continuar funcionando
correctamente para todas las combinaciones posibles
de fuentes. Esto es cierto independientemente de si las fuentes
distribuidas son rotativas o IBR. Además, una microrred
distribuida tiene el potencial de separarse en islas centradas
alrededor de cada nodo fuente, y el sistema de protección
debe lidiar con esa situación y con cualquier recombinación
de las islas hacia la microrred.
Desafíos de protección para las
microrredes en redes secundarias
En la actualidad, las microrredes suelen implementarse para
proporcionar una continuidad del servicio en caso de pérdida
de la fuente principal en la empresa de servicios públicos. Se
puede pensar que si una instalación ya abastecida por una
red secundaria tiene una fuente de potencia in situ, como las
centrales de vapor y de cogeneración, el operador podría considerar
la creación de una microrred basada en dicha fuente
para proporcionar potencia durante un evento catastrófico
que deje fuera de servicio a todos los servicios primarios. Si
hay una capacidad de generación que brinde suficiente potencia
a las instalaciones cercanas, también es posible que el
límite de esta microrred pueda ser extendido, a fin de incluir
así una porción de la red secundaria. Con base en lo anterior,
se deben superar dos desafíos clave para implementar una
microrred en una red secundaria. El primero que surge es si
las FED de la microrred provocan un flujo eléctrico inverso a
través de las unidades de red. La figura 1 presenta una red sin
FED
Servicio principal (SP)
CB
FED
Alimentador principal 1 (SP)
Alimentador principal N (SP)
NU
CB
NU
NU: unidad de red
NU
FED
C
Alimentador
secundario 1 (BT)
FED
Cargas
FED
B
A
Cargas
NU
D
FED
FED
Alimentador
secundario K (BT)
Cargas
Cargas
Cargas
figura 5. Una red secundaria mallada seccionada en cuatro microrredes, denominadas A, B, C y D. Las líneas puntoguión
indican los límites de la microrred. Las porciones grises del sistema están fuera de las microrredes.
60
ieee power & energy magazine
mayo/junio 2021
Cargas
Cargas

IEEE Power & Energy Magazine - Spanish - May/June 2021

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - Spanish - May/June 2021

Contents
IEEE Power & Energy Magazine - Spanish - May/June 2021 - Cover1
IEEE Power & Energy Magazine - Spanish - May/June 2021 - Cover2
IEEE Power & Energy Magazine - Spanish - May/June 2021 - Contents
IEEE Power & Energy Magazine - Spanish - May/June 2021 - 2
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IEEE Power & Energy Magazine - Spanish - May/June 2021 - Cover3
IEEE Power & Energy Magazine - Spanish - May/June 2021 - Cover4
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