Power station 22

 Question =  A generating station has the following daily load cycle.

Solution = Daily curve is drawn by taking the load y-axis and time along x-axis. For the given load cycle , the load curve is show in figure . 


(1) It is clear the load curve that maximum demand on the power station is 35 MW and occurs during the period 16 to 20 hours in maximum demand = 35 MW , answer ✓ 

(2) unit generated per day = [ ( 20 × 6 ) + ( 25 × 4 ) + ( 30 × 2 ) + ( 25 × 4 ) + ( 35 × 4 ) + ( 20 × 4 ) , MWH , 

» after calculate we found = 600 MWH or , 600 ×10³ kWh , answer ✓ 

(3) average load = unit generated per day  ÷ 24 hours , = ( 600 ×10³ kWh ) ÷ ( 24 hours ) , = 25 × 10³ kW , answer ✓ 

(4) Load factor = average load ÷ maximum demand , = ( 25 × 10³ kW  ) ÷ ( 35 × 10³ kW ) , = 0.714 or, 

» for %  ( × 100 ) = 0.714 × 100 = 71.4 % . answer ✓ 

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