Power station 2

 Question = A generating station has a connected load of 43 megawatt and a maximum demand of 20 megawatt . the units generated being 61.5 × 10⁶ per annum . calculate (1)  the demand factor and (2) load factor 

solution = connected load = 43 MW , • max.. demand = 20 MW , • unit generated/ annum = 61.5 × 10⁶ kWh , 

(1) demand factor = max. demand/ connected load , = 20 MW ÷ 43 MW , = 0.465 , answer ✓ 

(2) Load factor = average demand ÷ max.. demand. 

» hours in a one year = 24 hours × 365 days ,= 8760 hours , 

» Average demand = ( unit generated/annum ) ÷ hours in a year , =( 61.5 ×10⁶ ) ÷ 8760 ,= 7020 kw , 

» L.F.= average demand ÷ maximum demand. = ( 7020 ) ÷ ( 20 × 10³ ) ,= 0.351 , or, 35.1 % , answer ✓ 

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