Power & Energy Magazine - Spanish - May/June 2019 - 78

determinó el ángulo de encendido del TCSC, el nivel de
compensación y las capacidades nominales del capacitor y
del inductor. Los estudios también determinaron el rango de
compensación del modo dinámico y los rangos de funcionamiento esperados para los modos normal y dinámico, a fin
de evitar resonancias no deseadas y permitir estimaciones de
los ángulos de encendido óptimos para el TCSC.
La instalación de un STATCOM proporcionaría de forma
instantánea el soporte reactivo necesario, y se seleccionó
como la mejor opción para obtener un rendimiento de LCC
HVdc más estable. La ubicación del STATCOM, cercano
en términos eléctricos al lado del inversor correspondiente
al sistema de HVdc, debe determinarse antes de definir su
capacidad nominal. El soporte adecuado de potencia reactiva y la capacidad dinámica del STATCOM mejoran el rendimiento de la HVdc al evitar fallas de conmutación en caso
de contingencias severas y al mantener una tensión aceptable
de CA y CC en el terminal del inversor.

Puesta en marcha esperada
El gráfico 4 es un diagrama para el sistema eléctrico planificado en el área de interés. El lado este es el área de generación principal, equipada con plantas nucleares y de carbón
a gran escala; el lado oeste del sistema es el principal centro
de carga del país que incluye Seúl, la capital de la República
de Corea. El proyecto tiene como meta estabilizar el sistema
eléctrico coordinandro los controles del sistema de HVdc
con los FACTS, de manera consistente con los criterios

Límite del
centro de carga

345 kV
765 kV
Previsto 765 kV
HVdc
TCSC

Planta
de carbón
(2 GW)

de planificación que permiten que hasta dos generadores
se desconecten cuando ocurra la contingencia más severa:
una falla trifásica en las líneas de transmisión de 765-kV
de doble circuito que resultan en su pérdida. La adición del
sistema de la HVdc, los STATCOM y los TCSC reemplaza
el plan original de construir nuevas líneas de transmisión de
765 kV. Luego de revisar diversos escenarios y estrategias, se
han planificado dos líneas bipolares de LCC-HVdc con una
capacidad nominal total de 8 GW. Dos TCSC, cada uno con
una clasificación de 500 Mvar, soportarán el rendimiento de
la HVdc y también maximizarán la capacidad de transferencia de energía de CA en condiciones de contingencia N-2.

Elección de las herramientas y las
expectativas
para los estudios detallados
La elección de la herramienta para llevar a cabo el estudio
de viabilidad es bastante importante en este proyecto de
LCC-HVdc debido a la naturaleza complicada del sistema
eléctrico futuro. Tradicionalmente, el análisis del estado
estacionario y del TSA utilizan PSS/E o una herramienta
de evaluación de seguridad transitoria similar. Estas prácticas y herramientas son aceptadas por la industria y apropiadas para la simulación de grandes sistemas eléctricos. Estos
estudios determinan el tamaño y la ubicación óptimos de los
sistemas de HVdc.
Sin embargo, una herramienta de TSA no es adecuada
para la investigación de las dinámicas que requieren tipos de

Planta
de carbón
(2 GW)

Planta
de carbón
(2 GW)

Planta nuclear
(2 GW)

STATCOM
Planta nuclear
(2 GW)

Planta nuclear
(2 GW)

Planta nuclear
(6 GW)

gráfico 4. Una red simplificada desde el complejo de generación hasta el área metropolitana de Seúl con HVdc y
FACTS. Las líneas de transmisión individuales anteriores son líneas de doble circuito.
78

ieee power & energy magazine

mayo/junio 2019



Power & Energy Magazine - Spanish - May/June 2019

Table of Contents for the Digital Edition of Power & Energy Magazine - Spanish - May/June 2019

Contents
Power & Energy Magazine - Spanish - May/June 2019 - Cover1
Power & Energy Magazine - Spanish - May/June 2019 - Cover2
Power & Energy Magazine - Spanish - May/June 2019 - Contents
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Power & Energy Magazine - Spanish - May/June 2019 - Cover3
Power & Energy Magazine - Spanish - May/June 2019 - Cover4
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