Laserfiche WebLink
<br /> <br />.. <br /> <br />. <br /> <br /> <br />. <br /> <br />~'"' <br />~ <br />I'\~ <br />~ <br /> <br />16. <br /> <br />C? <br /> <br />li it as a safety factor to take care of speed variations <br />.' <br /> <br />in elays, circuit breakers, load swings, and hunting, <br />tha mav be in progress immediately previous to the occur- <br />ren e of.a fault or disturbance on one of the circuits. <br /> <br />For the Boulder lines, the Bureau has set the <br /> <br />max mum delivered operatine ca'Ylacitv of two circuits, <br /> <br /> <br />ope ating in parallel with intermediate switchin~ stations <br /> <br /> <br />a.t 40,000 kw. or 8050 of 300,000 kW., the calculated <br /> <br /> <br />'tr lsient" stability.. The calculations include, in addi- <br /> <br />tio to the Boulder generators, transformers, and line, <br /> <br />~ <br /> <br /> <br />,i <br /> <br />the eceiving station transformers, 240,000 kva. of.s'm- <br /> <br /> <br />chro ous condensers and 150,000 kva. of steam plant penera- <br /> <br /> <br />tors loaded to 60,000 kw. If 150,000 kva. of steam gener!:i- " <br /> <br />tors at the receiving end of the line had been assumed as <br /> <br /> <br />carr. ing higher loads, the "transient" limit of the two <br /> <br />cire its would have been raised. Likewise, if the steam-. <br /> <br />Clriv <br /> <br />generators had been assumed as not carrying load o~ <br /> <br />hadn t been included in the calculations, the "transient;t <br /> <br />stabi ity limit would have been reduced. <br />When a third circuit is built the increment of <br /> <br />addit onal capacity will be 150,000 kW., which capacit" <br />resul s from the fact that it is still possible to tie a <br />third ine in parallel with the other two circuits and <br />leeop ,. 'thin the limit of rating of the present equipment. <br />This i not a figure directl v assignable to the performance' <br /> <br />\ <br />J <br /> <br />....-- <br /> <br />A. B. Roberts <br /> <br />, <br />'a'- _ ' <br />i <br />, <br />i <br /> <br />,_. <br />;i <br />;. <br />':j <br />, <br />, <br />'; <br />i <br />j <br />J <br />,) <br />- .;,~ <br />., <br />