Power Plant Flashcards
A graph that shows system demand by hour
Load Curve
Used by system operators to develop hourly dispatch plans for power plants
Load Curve
Sum of all continuous rating of all utilization equipment in consumer premises connected to the supply system
Connected Load (CL)
Also called Peak Load
Maximum Demand (MD)
Greatest demand of load on the power station during a given period
Maximum Demand (MD)
Sometimes called Average Demand
Average Load (AL)
Load occuring on the power station in a given period
Average Load (AL)
Ratio of maximum demand on the power station to its connected load.
Demand Factor (DF)
DF = MD/CL
Ratio of the sum of the individual maximum demand to the simultaneous maximum demand on the power station.
Diversity Factor (Div F)
Div F = £MD / Simultaneous MD
Reciprocal of diversity factor
Coincidence Factor (Co F)
Co F = 1/Div F
Ratio of average load to the maximum demand during a given period
Load Factor (LF)
LF = AL/MD = TEP/(MD x Sr)
Ratio of actual energy produced to the maximum possible energy that could have been produced during a given period.
Capacity Factor (CF)
CF = TEP/(IC x Pr)
Ability to carry load under condition specified by the manufacturer
Name Plate or Capacity Rating
Maximum output of equipment obtained by test under specific operating condition (not specified by manufacturer)
Capability Rating
Ratio of the energy generated to the product of plant capacity and the number of hours for which the plant was in operation
Plant Use Factor (PUF)
Output Factor
Plant Factor (PF)
PF = TEP / (IC x Sr)
Ratio of maximum demand to the generator capacity
Utilization Factor (UF)
UF = MD / IC
Ratio of the average load for a given period to the operating capacity in actual service (for multi-set plant)
Operating Plant Factor (OPF)
OPF = TEP / (OPC x Sr)
Ratio of the Average load for a given period of the time to the average of daily maximum demand during the same period (usually 30 day period)
Operating Load Factor (OLF)
OLF = TEP / (30)(24)
——————————————-
(MD1 + MD2 +…+ MD30) / 30
Ratio between Capacity Factor to the Plant Use Factor
Operating Factor (OF)
or Service Factor
OF = CF / PF = Sr / Pr
Ratio of service hours to the period hours
Operating Factor (OF)
or Service Factor
OF = CF / PF = Sr / Pr
It is the ratio of the net kWh output for the year to the name plate capacity of the plant times hours of the year
Plant Ratio (PR)
PR = TEP per year / (IC x Pr)
