Answer :
Final answer:
The annual load factor of the substation is calculated by dividing the actual energy delivered by the energy that could have been delivered if the station operated at full capacity all the time. In this case, it is calculated as 0.18 or 18%
Explanation:
The annual load factor is a measure of the efficiency of a power station and is calculated by dividing the actual energy delivered by the energy that could have been delivered if the station operated at full capacity all the time.
In this case, the power station delivers 100 MW for 2 hours, and 50 MW for 6 hours per day, and is shutdown for the rest of the day. It is also shut down for maintenance for 45 days per year.
The total energy delivered per day is (100 MW * 2 hours) + (50 MW * 6 hours) = 500 MWh. Over a year, this would be 500 MWh * (365 days - 45 days) = 160,000 MWh.
The maximum energy that could be delivered if the station operated at full capacity (100 MW) all the time is 100 MW * 24 hours * 365 days = 876,000 MWh.
Thus, the annual load factor is 160,000 MWh / 876,000 MWh = 0.18, or 18%.
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