Duration curve

A duration curve is the graphical representation of statistically equivalent measurement values in the order of their magnitude. Duration curves are used to describe the frequency at which the measurement values fall below or exceed certain thresholds over a certain period of time. A duration curve is created by sorting the measurement values in descending order of their magnitude, whereby the abscissa represents the time axis.

../_images/duration-curve.svg

The duration curve of a temperature data point over 300 days. The chart is to be read so that the temperature was at least 17 °C on 100 days.

To set up a duration curve, proceed as follows:

  1. Drag a data point from the data point gallery to the empty space below the Plots heading.

  2. The new plot is selected automatically, allowing you to configure it. For example, change the line color or the fill color of the underlying area.

  3. If measured data is available for the data point, a preview of the measurement value recording will be displayed at the top.

  4. You can repeat the first and second steps as often as you like.

Divide by time difference

To create a power duration curve from an energy data point, activate the Divide by time difference option on the corresponding plot.