Hello Richard, Do you know the precise definition of the LCDF?
The LODF_ij is the change in flow in branch i resulting from a branch j outage as a fraction of the pre-outage flow on branch j. So would the LCDF_ij be the change in flow in branch i as a result of a branch j clousre as a fraction of the post-closure flow on branch j?* If so, it would seem that the LCDF is equal to the negative of the LODF computed on the post-closure network, right? I suspect there is a more efficient way to compute LCDFs if you already have the PTDFs for the pre-closure system, but I haven’t found a formula for it or derived it myself (yet). Ray * Seems that’s exactly how PowerWorld describes it on page I11-19 of this Linear Analysis trainman document<https://www.powerworld.com/files/TrainingI11LinearAnalysis.pdf>. On Aug 30, 2022, at 10:12 AM, Richard Lincoln <r.w.linc...@gmail.com<mailto:r.w.linc...@gmail.com>> wrote: I am able to use the makeLODF function from MATPOWER to calculate the changes in flows given the outage of a branch. However, I would like to be able do the same, but for the reconnection of a branch that is presently open. I've heard these referred to as Line Closure Distribution Factors (LCDF). Does anyone know how they might be computed with MATPOWER? Richard