IEEE Power & Energy Magazine - Spanish - September/October 2021 - 37

en el ajuste continuo de la oferta y demanda de electricidad.
Junto con ofrecer incentivos eficientes para los participantes,
los mecanismos de precios en tiempo real facilitan la posibilidad
de tener contratos por diferencia y cobertura a fin de
respaldar los acuerdos a largo plazo y la mitigación de riesgos.
Esto se realiza ampliamente en el NEM a través de contratos
de cobertura y permuta. Los mercados del NEM para
servicios del sistema se establecieron con un compromiso
similar de tarificación en tiempo real (en aquellos servicios
que se remuneraban). El NEM cuenta con seis mercados de
respuesta de frecuencia (servicios auxiliares de control de
frecuencia): aumento de la respuesta de frecuencia ante contingencias
y menores prestaciones de servicios en tiempos
de respuesta de 6 segundos, 60 segundos y 5 minutos, y un
servicio de respuesta de frecuencia primaria con el método
" causante paga " . Existen servicios ajenos al mercado para
el soporte y control de la red, como el control de oscilación
transitorio y los reinicios del sistema.
Como reflejo de su carácter más pequeño y concentrado,
el WEM balancea la eficiencia del mercado con una mayor
adquisición estructurada, como un mercado de capacidad (el
mecanismo de capacidad de reserva), un predespacho del
Servicios esenciales del sistema
Todos los sistemas eléctricos requieren un conjunto de
servicios del sistema, tradicionalmente conocidos como
servicios auxiliares, pero cada vez más denominados como
servicios esenciales del sistema (ESS), necesarios para un
funcionamiento seguro y confiable. A menudo, los servicios
pueden realizar la misma función, pero varían en sus nommercado
de energía, el mercado de energía a corto plazo y un
mercado de energía en tiempo real con despacho a 30 minutos
(con límites de precios de mercado menores, actualmente
entre AUD$ 382 y 1,000/MWh). En el caso de los servicios
del sistema, el WEM prioriza la adquisición estructurada a
través de un mercado de regulación (servicios auxiliares de
seguimiento de carga) y otros servicios del sistema adquiridos
bajo contrato, como la respuesta de frecuencia (reservas
en funcionamiento) y, al igual que el NEM, servicios ajenos
al mercado similares para el control de la red y reinicios del
sistema.
El programa para después de 2025
En 2019, los gobiernos federal, estatales y territoriales de
Australia solicitaron al ESB que prestara asesoramiento
sobre un diseño de mercado adecuado al propósito y a largo
plazo para el NEM que pudiera aplicarse a partir de 2025
como respuesta a la profunda transformación energética que
está ocurriendo en el país. La iniciativa se ha hecho conocida
como Post-2025 Market Design Project (Proyecto de Diseño
de Mercado para después de 2025), y se centra en toda la
cadena de suministro eléctrico; desde el mercado mayorista
bres, implementación, competitividad y mecanismos de
remuneración en todas las jurisdicciones. La figura S1 y la
tabla S1 resumen los distintos servicios que existen en Australia,
con sus implementaciones en el mercado mayorista
de electricidad y el NEM.
(Continua)
Actúa en
Milisegundos
Segundos
Minutos
Horas
Adecuación
de fuentes
Energía a gran escala
Reservas operativas
Reservas estratégicas
Gestión de
frecuencia
Gestión de
tensión
Restablecimiento
del sistema
Respuesta
inercial
Control de
frecuencia primaria
Control de
frecuencia secundaria
Control de tensión de respuesta rápida
Control de frecuencia terciaria
Control de tensión de respuesta lenta
Robustez del sistema
Servicios de arranque autógeno,
Servicios de soporte de restablecimiento
figura S1. Escalas de tiempo de operación y la clasificación de ciertos ESS (Fuente: requerimientos de los sistemas eléctricos,
por el Operador Australiano del Mercado Eléctrico, 2020; utilizado con permiso).
septiembre/octubre 2021
ieee power & energy magazine
37
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IEEE Power & Energy Magazine - Spanish - September/October 2021

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

Contents
IEEE Power & Energy Magazine - Spanish - September/October 2021 - Cover1
IEEE Power & Energy Magazine - Spanish - September/October 2021 - Cover2
IEEE Power & Energy Magazine - Spanish - September/October 2021 - Contents
IEEE Power & Energy Magazine - Spanish - September/October 2021 - 2
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IEEE Power & Energy Magazine - Spanish - September/October 2021 - Cover3
IEEE Power & Energy Magazine - Spanish - September/October 2021 - Cover4
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