Region Maintenance Factor

Units:	-
Mode:	Input/Output
Multi-band:	False
Default Value:	1
Validation Rule:	≥0
Key Property:	No
Description:	Maintenance factor

Region Maintenance Factor is the maintenance profiling factor used by PASA and LT Plan to 'shape' maintenance events into appropriate periods of high capacity reserves. The factor indicates the relative desirability of maintenance in any period with zero meaning 'undesirable', one being 'neutral', and values above one meaning 'desirable'. The PASA setting Maintenance Sculpting can be used to shape the maintenance events more aggressively into the high reserve periods.

NOTE: Ensure that you select the Regional Transmission detail in the PASA object.

Input

When used as an input you must ensure that the sum of Maintenance Factor across hours of a year sums precisely to the number of hours in the year, so that the average factor is unity; as in the following example of patterned input data. In this case no maintenance will occur in months January and December.

NOTE: If your planning horizon is less than a year the factors need not average unity.

Property	Value	Unit	Timeslice
Maintenance Factor	0	MW/MW	M01
Maintenance Factor	0.6990	MW/MW	M02
Maintenance Factor	1.2619	MW/MW	M03
Maintenance Factor	1.3373	MW/MW	M04
Maintenance Factor	1.4464	MW/MW	M05
Maintenance Factor	0.7877	MW/MW	M06
Maintenance Factor	0.9247	MW/MW	M07
Maintenance Factor	1.2572	MW/MW	M08
Maintenance Factor	1.4236	MW/MW	M09
Maintenance Factor	1.5039	MW/MW	M10
Maintenance Factor	1.3585	MW/MW	M11
Maintenance Factor	0	MW/MW	M12

Output

As an output, Maintenance Factor reports the optimal values calculated by PASA as in the following example. The Maintenance Factor profile (secondary y-axis) is based on the inverse of the Capacity Reserves profile (primary y-axis).

Figure 1: Example Maintenance Factor and Capacity Reserves

For LT Plan the reported Maintenance Factor is simply the normalized inverse of the Load profile.