Hello ray,
sorry for beeing not that precise. I would like to limit the power flow
which is injected into the AC grid. This means that i want to limit the
power flow from every AC node, which is connected to the DC grid. I have
already implemented a opf in a meshed AC/DC grid, but this does not
respect the converter power.
Best
Samuel
Am 03.12.2015 um 18:43 schrieb Ray Zimmerman:
If you are just talking about constraining the flow on each DC line
individually, then that’s already handled by the DC line
implementation described in Section 7.5.3 in the User’s Manual
<http://www.pserc.cornell.edu/matpower/docs/MATPOWER-manual-5.1.pdf>.
If you are interested in a single constraint across multiple DC lines
(an interface constraint), this is more complicated because DC lines
themselves are implemented using this OPF extension mechanism, adding
dummy generators and constraints to the problem. The flow in the DC
line is simply the negative of the output of the dummy generator at
the “from” end of DC line, so it is already a variable in the OPF.
Hopefully, this is enough to point you in the right direction.
Ray
On Dec 3, 2015, at 11:25 AM, Schilling, Samuel
<[email protected]
<mailto:[email protected]>> wrote:
Dear MATPOWER team,
I am trying to add linear constraints to an OPF with AC and DC lines.
I would like to limit the power flow over the DC lines. I know that
it is pretty simple to implement the constraints by defining an A
matrice with vectors l and u. However I still have troubles since I
am not able to define the DC power flow as a variable in the OPF. Can
you help me?
Thank you very much.
Kind regards
Samuel Schilling
--
M. Sc. Samuel Schilling
Wissenschaftlicher Mitarbeiter
Research Assistent
Technische Universität Berlin
Fakultät Elektrotechnik und Informatik
Fachgebiet für Energieversorgungsnetze und
Integration Erneuerbarer Energien (SENSE)
Einsteinufer 11 (EMH-1), 10587 Berlin
Telefon: +49 (0)30 314-23843
[email protected]
www.sense.tu-berlin.de
