Substation Rated Capacity
Substation Rated Capacity
(OP)
If the transformer of a substation had a capacity
of 60MVA/80MVA/100MVA;
OA/FA1/FA2.
Can I say that it is a 100MVA S/S?
Could anyone can explain to me if this right or not?
Your reply is highly appreciated.






RE: Substation Rated Capacity
It depends. The transformer is designed to operate at 100MVA without its life expectancy being shortened. Other factors to consider are the ratings of your main bus and equipment. Is the main bus, both HV and LV rated for the current expected at 100MVA? Switches? etc...
RE: Substation Rated Capacity
You have to be a little careful if you are just looking at a one-line, however. Sometimes transformers are purchased with "provisions" for future cooling, but without the actual fans. The one-lines often will show the full blown rating of the xfmr, even though the fans were never added.
RE: Substation Rated Capacity
http://cuky2000.250free.com/Tr_Load.jpg
Please note that there may be allowance to overload the transformer and other system components beyond the nameplate/rating for short term.
RE: Substation Rated Capacity
It is more convenient to define the substation based from the installed capacity rather than the actual operating capacity. If there are other ways to define such installation, please let me know since this is my opinion.
GO PLACIDLY, AMIDST THE NOISE AND HASTE-Desiderata