In fact, the DC line model implemented by MATPOWER does explicitly set the type of the terminal buses to PV.
Does anyone think that should not be the case? Ray > On Feb 19, 2015, at 9:11 AM, Abhyankar, Shrirang G. <[email protected]> > wrote: > > My guess is that you have bus 9 set as a PV bus and hence it's voltage > magnitude is constant. > > Shri > > On Feb 19, 2015, at 4:47 AM, "david clerc" <[email protected] > <mailto:[email protected]>> wrote: > >> Hello everyone, >> >> First I apologize for my approximate english. >> >> I am working on a student project : I have to incorporate a DC transmission >> line on an AC grid. >> In order to do that, I use the "dcline" matrix already present in matpower. >> >> Now, I want to observe the continuation power flow of the grid at a bus, >> when this bus is only linked to the grid by a DC line. >> I have tried that on a little modified case9_dcline. >> The resulting curve wasn't a nose curve as I expected, it is more like a >> horizontal straight line, the points make an round trip. >> (I include an image in my mail but I'm not sure you will see it) >> >> <cpf plot.PNG> >> cpd with AC line (bottom) with DC line (up) >> >> I think that this result is wrong, and I suppose it s because of the >> reactive injection used to model the DC transmission line. >> I tried to limit the reactive injection with "mpoption('pf.enforce_q_lims', >> 1);" but the curve was the same ! >> >> What do you think about it? >> >> If I'm right about the reactive injection problem, what can I do to observe >> the real sensibility of my bus ? Is there another way to do it ? >> >> I would very much appreciate any advice. >> >> Kind Regards, >> >> David >> >> > <cpf plot.PNG>
