Using mostly projected values

This example uses mostly projected values to calculate the Projected Demand Average.

Assuming that the Demand Interval is set to 15 minutes and the Percent Interval Elapsed property is set to 7 (7%), the system calculates demand based on the current minutes demand reading which it projects for the remaining minutes in the Demand Interval window. The following example assumes that the Power Input value is 400.

minutesElapsed = 15 * 6.67 / 100 = 1

minutesRemaining = 15 - 1 = 14

calculated total = (current Power Input * minutesRemaining) + Power Input from each minutesElapsed interval

calculated total = (400 * 14) + 400 = 6000

projectedDemand = calculated total / (minutesElapsed + minutesRemaining)

projectedDemand = 6000 / (1 + 14) = 400

By setting the Percent Interval Elapsed property to a value that corresponds to the first minute of the demand window, the system calculates demand based almost entirely on a projected data value.

In this case, the projected demand calculation uses the Power Input value at minute two (2) and averages demand across the remaining 14 minutes.