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Assuming that we have a 66/11-kV primary substation with three 66/11-kV, 20MVA (rating of each transformer),...

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Electrical Engineering

Assuming that we have a 66/11-kV primary substation with three66/11-kV, 20MVA (rating of each transformer), power transformers,then the installed capacity is 60MVA and the firm capacity is48MVA. I'd like to know what is the difference between installedand firm capacity. Furthermore, how was the firm capacitycalculated from the installed capacity? What I know is that thefirm capacity is calculated as follow: Firm Capacity = 20 + 20 + 4+ 4 = 48MVA, and that the equation (n - 1)x120% is used, where n isthe no. of transformers.

Please reply as soon as possible.

Answer & Explanation Solved by verified expert
4.0 Ratings (635 Votes)
Installed capacity Installed capacity is also known as Nameplate capacity It refers to the maximum amount of energy a powerplant is able to produce in ideal conditions It is measured inMVAFirm capacity Firm capacity means the amount of energy a powerplant can produce with high degree of    See Answer
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