27-03-2014, 12:48 PM
Power Plant Economics
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Two basic parameter for power plant planning:
Total power output to be installed
First demand estimated
Growth of demand anticipated
Reserve capacity required
Size of the generating units
Variation of load during 24 hours (summer, winter, week days, holidays)
Total capacity of units connected to the electric grid
Maintenance program planned
Plant efficiency vs size of unit
Price and space demand per kW vs size of unit
Load curve
Industrial load
Urban traction load (railways , trams, trolleys)
Residential load
Street lighting
Total
Factors:
Load factor ( Average /Maximum load)
Capacity factor (m=Average/rated)
Reserve factor (load/capacity factor)
Demand factor (dem) (actual maxi. Demand/total connected load)
Diversity factor (divn)(sum of individual consumer groups/actual peak load of system)
Plant use factor (u)(electricity generated/rated x time)
Load duration curve
Base load (all over the time)
Intermediate load ()
Peak load (15 %)