Power & Energy Magazine - Spanish - May/June 2019 - 107

Autoprotección
Al igual que con todos los convertidores de alta potencia, las
válvulas semiconductoras en CB híbridos de CC se abren en
caso de demasiada corriente. Esta es una característica de autoprotección. Aunque no es muy probable, una falla en algunos
componentes de protección de la red (relé, sensor, comunicación y otros) podrá no mandar una señal de disparo al CB de
CC en una situación de falla de la CC, lo cual puede tener como

consecuencia un aumento de la corriente de CB de CC sin un
comando de disparo de CB de CC. En términos prácticos, esto
significa que el CB de CC puede abrirse por sí solo para protegerse a sí mismo en algún umbral de corriente CC (el cual es
mucho más alto que la configuración de la protección de la red
de CC). Si la protección de la red fallara por cualquier motivo,
el CB híbrido de CC debería abrir el circuito en su umbral de
autoprotección como la última línea de defensa.

Rama auxiliar
iT1
Seccionador
ultrarrápido

Rama
auxiliar

FBSM
Rama principal

iT2
FBSM FBSM
FBSM FBSM
FBSM FBSM
FBSM FBSM
Unidad modular Unidad modular Unidad modular Unidad modular

Absorbente
de energía

Rama
principal

iabsorb
Absorbente de energía
uDB
(a)

(b)

gráfico 7. (a) La topología y (b) un prototipo para un CB de HVdc de 200 kV.
tabla 1. Factores relacionados con la prueba del aislamiento y las características operativas de los CB de HVdc.
Número

Prueba

Objeto de prueba

Artículos

Objetivo

1

Prueba de
aislamiento

Fases a tierra

Prueba de resistencia a la tensión de
CC

Para verificar la capacidad de
resistencia a la tensión y el nivel de
descarga parcial de la estructura de
soporte

2

Prueba de resistencia al impulso de
conmutación

3

Prueba de resistencia al impulso de
rayo

4

A través de
contactos abiertos

5
6
7

Prueba de resistencia a la tensión de
CC

Para verificar la capacidad de soportar
tensión a través de contactos abiertos

Prueba de resistencia al impulso de
conmutación
Prueba
operativa

Componentes
clave

Prueba de resistencia a corriente pico
Prueba de resistencia a la sobrecarga

8

Prueba de resistencia a la corriente a
corto plazo

9

Prueba de resistencia a la corriente a
corto plazo

10

Prototipo general

Prueba de interrupción de corriente
nominal

11

Prueba de interrupción de corriente
por cortocircuito

12

Prueba creación de corriente nominal

13

Prueba creación de cortocircuito

mayo/junio 2019

Para verificar el condensador que
soporta a la corriente del CB

Para verificar la capacidad de
interrupción de la corriente y el
tiempo de interrupción
del prototipo general y la
corrección del programa del sistema
de control
y protección

ieee power & energy magazine

107



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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