Shift Factor Tolerance
This value specifies the minimum shift factor value that will be used in the analysis.
Shift factors are used to determine branch flows as functions of net load at each bus. For each MW of load/gen at a particular bus they tell us how much is flow going to increase (or decrease) on a particular branch. There can be a number of values for bus/branch pairs. Note that load on a bus can affect flows on branches to which the bus is not directly connected, so the shift factors can be a very large data set.
The Shift factor tolerance is a level below which the model ignores the shift factors. A lower value in that setting means that the model accounts for smaller numbers and keeps track of more shift factors.
Shift Factor Tolerance