delivery of reactive power depending on voltage given by a curve

Hello everyone, i would like to simulate a special Q(V)-control-behavior of a generator. This means delivery of reactive power depending on the actual bus voltage given by a Q(V)-curve similar to this picture:

OPF convergence issue with piecewise linear cost

Dear all, I wanted to compare the results of the OPF with the two types of model for the generator costs (polynomial and piecewise linear cost). So first, I launched an OPF with polynomial cost which converged, then I launched one with linear cost and it does not converge. I know that my

Re: AC OPF vs DC OPF in MOST

>From the Introduction section in the MOST User’s Manual > … While the problem formulation is general and incorporates a full nonlinear AC network model, the current implementation is limited to DC power flow modeling of the

Re: AC OPF vs DC OPF in MOST

Thank you Ray for your clarification بتاريخ ٢٠١٧/١١/٢١ ٧:٠٦ م، كتب "Ray Zimmerman" : > From the Introduction section in the MOST User’s Manual > … > > *While the problem formulation is general and incorporates a

Re: Run PF but it does not run OPF

Dear Ray, Thank you so much for your help. Regards, Charalampos On 21 Nov 2017, at 15:17, Ray Zimmerman > wrote: The total load in your system is 643.3 MW, but your generators have maximum active power outputs of 0 and 15 MW, respectively. Min and

Re: AC OPF vs DC OPF in MOST

Actually our target is to do an economic dispatch for a given network in presence of Solar PV Power We want to do the ED for multiple periods,24hr, and we want to use AC OPF to compare the simulation results with the practical results is there any way to do this task? بتاريخ ٢٠١٧/١١/٢١ ٨:١٧

Re: Multiple Slack bus

No, MATPOWER does not currently implement distributed slack. Ray > On Nov 20, 2017, at 7:01 AM, Ahmad Sadiq Abubakar > wrote: > > Dear all, > > Can I run power with multiple slack bus in matpower? > > -- > Engr. AHMAD, Abubakar Sadiq > PhD Student >

Update runpf to formula voltage deviation, not PLOSS

Dear Ray Zimmerman, if function [PLOSS] = runpf(casename,AA)To find the value of the function of the voltage deviation on the load bus : deviation voltage = (IVi-1.0I) how to update runpf coding? Thank youSabhan K

Re: delivery of reactive power depending on voltage given by a curve

Yes. The current development version of MATPOWER on GitHub includes capabilities for adding user-defined nonlinear constraints. See Sections 6.3.2 and 7.1.2 in the corresponding User’s Manual (PDF linked here

Re: Update runpf to formula voltage deviation, not PLOSS

I’m afraid I don’t understand your code example (see here for the calling syntax options for runpf), but if you want to see the deviations of bus voltages from 1 p.u. in, say, the results of a power flow, you can simply do

Re: OPF convergence issue with piecewise linear cost

Have you tried simply using a different solver? It could also be a problem with the starting point, so you might try setting the opf.init_from_mpc option to 1 and possibly even solve the power flow problem first and use it’s solution as the starting point. E.g. mpopt =

Re: How to Obtain Electric Current in branches with Zero Loss Indication

You can compute the complex currents directly from the power and voltage. The following code works for cases with consecutively numbered buses, otherwise you need to convert to internal bus numbering using ext2int first. define_constants; r = runpf('case9'); j = sqrt(-1); Sf = (r.branch(:, PF)

Re: Run PF but it does not run OPF

The total load in your system is 643.3 MW, but your generators have maximum active power outputs of 0 and 15 MW, respectively. Min and max reactive output from both are also zero. Clearly there is no feasible solution to such a problem. The OPF solves just fine if you use appropriate values for