Dear Ray, Is there any way to relax all limits except for line flows? I need it for some application.
---------- Forwarded message --------- From: Abdelrahman Aldik <[email protected]> Date: Wed, Dec 15, 2021 at 10:16 AM Subject: Re: Analyzing feasibility of a system To: MATPOWER discussion forum <[email protected]> Thank you Dr.Zimmerman. I appreciate that. Regards Abd On Tue, Dec 14, 2021 at 10:14 AM Ray Daniel Zimmerman <[email protected]> wrote: > The example I gave applies the soft limits to everything and is the > simplest. I find that helpful in case it is another limit that is causing > infeasibility. Typically, you won’t see a constraint overload unless it is > required for feasibility. > > However, if you do want to relax only the line flow limits you can do it > with … > > mpopt = mpoption('opf.softlims.default', 0); > mpc = loadcase(<mycase>); > mpc = toggle_softlims(mpc, 'on’); > mpc.softlims.RATE_A = struct(); > r = runopf(mpc, mpopt); > > Ray > > > On Dec 13, 2021, at 2:50 PM, Abdelrahman Aldik <[email protected]> wrote: > > Thank you for your answer Dr.Zimmerman. Does this function have the > ability to apply the soft limits only on the apparent power flow limit > constraints? Or does it apply all soft limits on all constraints? > > Regards > > On Mon, Dec 13, 2021 at 10:43 AM Ray Daniel Zimmerman <[email protected]> > wrote: > >> I would probably use MATPOWER’s OPF soft limit capability to see which >> constraints are violated. >> >> mpopt = mpoption(); >> mpc = loadcase(<mycase>); >> mpc = toggle_softlims(mpc, 'on'); >> r = runopf(mpc, mpopt); >> >> See Section 7.6.4 in the MATPOWER User’s Manual >> <https://matpower.org/docs/MATPOWER-manual-7.1.pdf> for more details. >> >> Ray >> >> >> On Dec 12, 2021, at 12:47 PM, Abdelrahman Aldik <[email protected]> >> wrote: >> >> Dear All >> >> If a system's feasibility was checked using the "runopf" function of >> Matpower and was found to be unfeasible. How can I utilize Matpower in >> order to analyze the feasibility of the system? (In other words, can I use >> Matpower to know which constraints were violated?). I'm trying to create a >> feasibility analysis for a transmission expansion problem of a system so I >> would appreciate your feedback in this regard. >> >> Regards >> >> -- >> >> >> >> >> *Abdelrahman Aldik PhD Candidate Department of Electrical and Computer >> Engineering and Centre of Urban Energy Ryerson University CUI-030, 44 >> Gerrard Street East, Toronto, ON, Canada* >> *Email: [email protected] <[email protected]>* >> >> >> > > -- > > > > > *Abdelrahman Aldik PhD Candidate Department of Electrical and Computer > Engineering and Centre of Urban Energy Ryerson University CUI-030, 44 > Gerrard Street East, Toronto, ON, Canada* > *Email: [email protected] <[email protected]>* > > > -- *Abdelrahman AldikPhD Candidate Department of Electrical and Computer Engineering and Centre of Urban Energy Ryerson University CUI-030, 44 Gerrard Street East, Toronto, ON, Canada* *Email: [email protected] <[email protected]>*
