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
<[email protected]<mailto:[email protected]>> 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
