Question

Explain in detail about load-duration curve? How is it prepared?

Answer 1

The load duration curve is defined as the curve between the load and time in which the ordinates representing the load, plotted in the order of decreasing magnitude, i.e., with the greatest load at the left, lesser loads towards the rights and the lowest loads at the time extreme right. The load duration curve is shown in the figure above.

Procedure for Plotting the Load Duration Curve:-
1)From the data available from the load curve determines the maximum load and the duration for which it occurs.
2)Now take the next load and the total time during which this and the previous load occurs.
3)Plots the loads against the time during which it occurs.
The load duration curves can be drawn for any duration of time, for example, a day or a month or a year. The whole duration is taken as 100%.