Power & Energy Magazine - Spanish - September/October 2019 - 94

(a)

(b)

gráfico 2. (a) Una escena en el laboratorio de Edison el 31 de diciembre
de 1879 de The Daily Graphic (Nueva York) el 3 de enero de 1880. (b) Una
lámpara eléctrica en el crucero SS Columbia, parte de la primera instalación de
la iluminación eléctrica incandescente de Edison en una instalación comercial,
completada apenas antes de que el barco zarpara en su viaje inaugural en mayo
de 1880. Las lámparas se asemejaban a las lámparas de aceite, para que ellas
pudieran ser reemplazadas por lámparas de aceite de apariencia similar si las
bombillas fallaban, lo cual a menudo hacían dentro de los dos meses. (Fuente:
Scientific American, 14 de agosto de 1880, modificado por el autor.)

a larga distancia comenzó con los sistemas de CA, para los cuales se desarrollaron transformadores prácticos de
conversión descendente. Sin embargo,
un primer sistema de transmisión de CC
de alta tensión, inventado por el ingeniero suizo René Thury, compitió con
los sistemas de CA en algunos países
europeos por más de 30 años, a partir de
1889. En ausencia de transformadores
de conversión descendente de CC, este
sistema utilizaba dinamos de CC en serie en la estación generadora y motores
de CC en serie en las estaciones receptoras como divisores de tensión.
El 18 de abril de 1883, The Times de
Londres publicó una descripción detallada del primer sistema de distribución
de CA.
Un avance importante en la
ciencia eléctrica, respecto de
la distribución de la corriente
94

ieee power & energy magazine

eléctrica, ha sido influido por
los Sres. Gaulard y Gibbs en los
generadores secundarios inventados por ellos .... Viendo al aparato en sí mismo, observamos
que consiste, en primer lugar,
en una máquina dinamoeléctrica
que produce una corriente alterna. Esta corriente se conduce al
generador secundario, el cual, en
apariencia externa, se asemeja a
cuatro columnas de aproximadamente 2 pies de alto y 9 pulgadas
de diámetro, colocadas a unas
pocas pulgadas de distancia ....
En una reciente demostración privada de la invención,
había dos de los generadores
secundarios que hemos estado
describiendo. Uno de ellos suministraba corriente a 26 lámparas
incandescentes Woodhouse and

Rawson, mientras que el otro alimentaba una lámpara de arco Jablochkoff, cinco lámparas incandescentes Swan y también estaba
haciendo funcionar un pequeño
motor eléctrico para transmitir
energía .... Al aplicar de manera
práctica este sistema, se propone
establecer estaciones centrales
donde se colocarían máquinas
de dinamo, impulsadas por energía hidráulica siempre que fuera
posible. Se colocaría entonces un
circuito sobre el distrito al que se
debería suministrar y se colocaría un generador secundario en
cada casa donde se utilizaría la
corriente eléctrica.
El generador secundario descrito
en el artículo de The Times fue el primer transformador de CA de GaulardGibbs, seguido de una versión mejorada (gráfico 3) patentado en 1884 en
Inglaterra (patente británica número
3,173 del 12 de febrero de 1884) y en
otros lugares (Bélgica, Francia, Alemania, Italia y Estados Unidos). A
principios de 1883, Gibbs orquestó la
incorporación de una nueva empresa,
con el extraño nombre de Empresa
Nacional para la Distribución de Electricidad por Generadores Secundarios
(National Company for the Distribution of Electricity by Secondary Generators) (Londres). Gaulard y Gibbs
vendieron los derechos exclusivos de
sus inventos a esta empresa, se les pagó
en acciones de la empresa y en efectivo
a ser distribuido cuando se materializaran las ganancias. La primera implementación del sistema de GaulardGibbs fue hecha para las luces de arco
y las luces eléctricas incandescentes
del ferrocarril metropolitano de Londres (Metropolitan Railway of London)
en diciembre de 1883. La maquinaria
de generación se situaba en una estación de ferrocarril, donde un motor de
vapor impulsaba un dínamo de CA de
Siemens de 2,000 V, que proporcionaba energía de "16,000 alternaciones por
minuto" (8,000 ciclos/minuto y 133 1/3
Hz) a los transformadores de GaulardGibbs en cinco estaciones de ferrocarriles (gráfico 4). El circuito primario
septiembre/octubre 2019



Power & Energy Magazine - Spanish - September/October 2019

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Contents
Power & Energy Magazine - Spanish - September/October 2019 - Cover1
Power & Energy Magazine - Spanish - September/October 2019 - Cover2
Power & Energy Magazine - Spanish - September/October 2019 - Contents
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Power & Energy Magazine - Spanish - September/October 2019 - Cover3
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