Electrical Engineering ⇒ Topic : Expression of Cost of Electrical Energy

Daniel
 
Expression of Cost of Electrical Energy The overall annual cost of electrical energy generated by a power station is expressed in the following two forms: (i) Three part form Total annual cost of energy = Fixed cost + Semifixed cost + Running cost = Rs (A + B kW + C kWh) where A is annual fixed cost independent of maximum demand and energy output, B is a constant,which when multiplied by maximum kW demand on the station gives the annual semifixed cost,and C is a constant, which when multiplied by kWh output per annum gives the annual running. (ii) Two part form Total annual cost of energy = Rs (A kW + B kWh) where A is a constant, which when multiplied by maximum kW demand on station gives the annual cost of the first part and B is a constant, which when multiplied by the annual kWh generated gives the annual running cost  
 
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