Dear all,
I am trying to add nonlinear constraints w.r.t. the voltage magnitudes and
active generations of PV buses. To proceed, I need to calculate the gradients
and hessian w.r.t. the variable sets specified through varsets. I found that
there are only four valid names, i.e., ''Va","Vm","Pg","Qg", so in my case, I
need to specify the varsets field as {'Pg', 'Vm'}.
I am wondering:
1) What's the order of variables in each variable set? For example, does the
order in 'Vm' set the same as that of the mpc.bus or the same as the bus number?
2) Can I rename variable set names to make the calculation of gradient and
hessian more compact? For example, in my case, I only need the variables of PV
buses (i.e., Pg and Vm of PV buses). Can I create and rename some variable
subsets as 'PVg' and 'PVm' which contain the variables associated with PV
buses? If not, how can I extract the Pg and Vm of PV buses in my nonlinear
constraint function?
Best regards,
Yuanxi Wu
