Power station 15
Question= A power station has the following daily load cycle :
Solution = figure 1 , show the daily load curve , whereas figure 2 , show the daily load duration curve . It can be readily seen that area under two load curves it the same . Note that load duration curve is drawn by arranging the loads in the order of descending magnitudes .
• According to figure 1 , ( under daily load curve ) ,
• Unit generated per day = watt × hours ,
= [ ( 20 × 8 ) + ( 40 × 4 ) + ( 60 × 4 ) + ( 20 × 4 ) + ( 50 × 4 ) ] , = 840 MWH , or , 840 × 10³ kWh , answer ✓
(2) According to figure 1 , ( under daily load duration curve ) ,
• Unit generated per day = watt × hours ,
= [ ( 60 × 4 ) + ( 50 × 4 ) + ( 40 × 4 ) + ( 20 × 12 ) ] , = 840 MWH , or , 840 × 10³ kWh ,
Which is the same as above . Answer ✓
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