Hi Monisha,
Yes, if your power_flow_fcn and power_flow_hess functions need more than the
standard inputs (x for the former, x and lambda for the latter), you need to
include them in the 6th argument when you define your user_constraints.nle
field. I don’t recommend passing in the full mpc, since that results in mpc
being assigned to a field inside mpc (circular). Instead, just pass in the
parameters you need, like Yf, Yt, Pf0, Pt0, Qf0, Qt0. That is, add them to the
arguments expected by your two functions, and add them to the 6th element in
the user_constraints.nle field.
On the other hand, I suspect that it may be better to simply use the callback
interface. Have a look at toggle_softlims() for an example that could be
helpful for you.
Ray
> On Dec 12, 2017, at 1:58 PM, Monisha Raju <[email protected]> wrote:
>
> Hi,
>
> I'm trying to add power flow constraints and Pf, Qf, Pt and Qt as variables.
> I've tried a few different ways but I'm not sure what I'm missing. It looks
> like the 6th field in the user_constraints is required. However I can't pass
> any parameters.
>
> I've sent an email regarding this issue before. I was hoping I could get some
> guidance. I've attached the required files for clarity.
>
> Regards,
> Monisha Raju
> Graduate Research Assistant
> University at Buffalo
> <power_flow_fcn.m><power_flow_hess.m><problem1.m>
