IEEE Power & Energy Magazine - Spanish - May/June 2021 - 89

Primero, considere cómo respondería una microrred a un
corte de servicio si no pudiera aislarse sin problemas en eventos
no planeados. Una respuesta típica es disparar las FED
pero mantener las cargas de los clientes conectadas al sistema
de servicios públicos, con la expectativa de que la potencia
de los servicios públicos se restablezca momentáneamente
mediante una reconexión o restablecimiento. En esta respuesta
típica, si la interrupción del servicio público persiste,
entonces la microrred se aislará del servicio público abriendo
el interruptor de interconexión. Cuando la microrred está aislada,
se la puede abastecer en modo de isla iniciando y conectando
en paralelo las FED y luego conectando las cargas de la
microrred. Esta respuesta puede tardar unos minutos e incluye
esperar a que se restaure el suministro de potencia de la red
pública y se encienda la microrred en modo de isla.
Por el contrario, las microrredes que pueden activar un
modo de isla continuo y no planeado en respuesta a una falla
de la red pública, no lo hacen disparando las FED, sino disparando
inmediatamente el interruptor de interconexión.
Cuando se dispara el interruptor de interconexión, las FED
Servicios públicos
R
44 kV
12 kV
R
52 CB52-1
K
Leyenda:
R
Relé multifunción
(Basado en microprocesador)
Enclavamiento de llave
deben continuar suministrando potencia durante la transición
del modo conectado a la red al modo de isla. De esta
forma, las luces permanecen encendidas, pero la microrred
queda en modo de isla.
Cómo se implementó el sistema de modo de
isla continuo y no planeado
Existían tres componentes clave necesarios para implementar
con éxito el modo de isla continuo y no planeado en el
CEP de North Bay, el primero de los cuales fue el controlador
de microrred. Debido a que el controlador de microrred
tiene una imagen completa de la microrred, puede determinar
si una transferencia continua y no planeada al modo
de isla sería exitosa si se intentara. Esto se conoce como la
determinación de la disponibilidad de transferencia.
La segunda pieza son los relés de protección. La microrred
necesita los relés para detectar y aislar rápidamente problemas
en el suministro A la red pública. En este contexto,
rápidamente significa dentro de unos pocos ciclos de frecuencia
del sistema eléctrico.
12 kV
600 V
12 kV
600 V
R
3) Energía importada
de los servicios públicos
RR R
CB3
CB4
CA
CC
CHP
265 kW
CHP
265 kW
Sistema de
batería
250 kW
2) Capacidad de generación en línea
Solar
8 kW
CB1 (Punto de interconexión) CB2
K
CB5
R
CA
CC
Memorial
Gardens
YMCA
1) Carga total
Thomson
Park
CB6 R
R
Nodo de dispositivos de
conmutación de 600 V
CB7 R
CB8
R
CB9
Microrred
figura 7. Las consideraciones de disponibilidad de transferencia para la transición continua de la microrred del CEP.
mayo/junio 2021
ieee power & energy magazine
89

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
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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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