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Daily load curve divided into how many parts
One
Two
Three
Four
Two
Quick Summary: A daily load curve is traditionally divided into two distinct parts: the base load and the peak load. This division helps power systems engineers optimize the economic dispatch of generating units, using base load plants for constant demand and peak load plants for variable, high-demand periods.
A daily load curve is traditionally divided into two distinct parts: the base load and the peak load. This division helps power systems engineers optimize the economic dispatch of generating units, using base load plants for constant demand and peak load plants for variable, high-demand periods.
TotalEnergy=∫024P(t)dt — represents the total energy consumed in 24 hours calculated from the area under the curve.
LoadFactor=MaximumDemandAverageLoad — indicates the efficiency of the power system usage.
The daily load curve plots power demand (MW) against time (hours). The 'base load' represents the minimum, constant demand that is present throughout the 24-hour cycle. The 'peak load' refers to the additional, fluctuating demand that rises above this base level, typically occurring during specific hours of the day.
Base load is supplied by high-efficiency, constant-run units like nuclear or large thermal plants.
Peak load is met by fast-starting plants like Hydroelectric or Gas Turbines.
The area under the daily load curve represents the total units (kWh) generated or consumed in a day.
The daily load curve helps in determining the installed capacity of the generating station.
Facilitates cost-effective scheduling of generation units.
Helps in predicting future capacity expansion requirements.
Highly variable; requires real-time monitoring and control systems.
Accuracy depends heavily on historical data and consumer behavior patterns.
Economic Dispatch operations.
Capacity planning and utility billing.
Base load plants operate at a high load factor near 100%.
Peak load plants have lower utilization rates but provide critical grid reliability during surge periods.
Option A, C, and D are incorrect as the fundamental division in power system economic analysis identifies these two distinct operation modes (Base vs Peak).
B is correct — The daily load curve is divided into two primary parts: the base load, which is the constant minimum requirement, and the peak load, which is the varying demand above the base.
Always remember that the Load Factor is inversely proportional to the 'peakiness' of the load curve; a higher load factor implies a flatter curve, which is more economical.