Let's take this discussion off MatPower list as it looks like a debugging problem. What inputs are you passing to opf_args? If you have additional arguments then you need to change the nargin based logic in opf_args (line 251)
Shri On Jan 14, 2015, at 4:34 AM, "Mirish Thakur" <[email protected]<mailto:[email protected]>> wrote: Yes exactly same way I did before. tap = x(vv.i1.tap:vv.iN.tap); shift =x(vv.i1.shift:vv.iN.shift); and put back them in tapdata %% put shift and tap in tapdata. tapdata(:,TAP)= tap; tapdata(:,SHIFT)= shift; and by using this I will calculate Ybus like branch = tapdata; [Ybus, Yff, Yft, Ytf, Ytt,Cf, Ct, Yf, Yt] = makeYbus(baseMVA, bus,branch); but still problem remain same. Error using opf_args (line 312) opf_args.m: Incorrect input parameter order, number or type thanks! On Wed, Jan 14, 2015 at 6:16 AM, Abhyankar, Shrirang G. <[email protected]<mailto:[email protected]>> wrote: Take a look at how Sbus is created in opf_consfcn by extracting Pg, and Qg from the solution vector x. You need to do something similar with Ybus. Shri From: Mirish Thakur <[email protected]<mailto:[email protected]>> Reply-To: MATPOWER discussion forum <[email protected]<mailto:[email protected]>> Date: Wed, 14 Jan 2015 00:12:16 +0100 To: MATPOWER discussion forum <[email protected]<mailto:[email protected]>> Subject: Re: Power system modelling with transformer ratio and shift. Dear Mr. Abhyankar .G., I'm not sure about it and I'm not getting correct way how to extract the elements from solution vector you are talking about. But what I've done is- 1) I didn't put tap ratio and shift values in branch matrix. I have created another matrix data for transformer like mpc.tapdata in matpower case file (case9.m) and assigned values with lower and upper bounds for both ratio and shift. Also created idx_tapdata where I have defined constants for named column. 2) Added these extra variables and their constraints in opf_setup by add _vars and add_constraints. (Total variables were 24 and now they are 42 in Jacobian matrix verified by spy function.) 3) Created new function where I get ratio and shift values. Problem what I'm facing is how to extract values of ratio and shift from solver to update the Y bus in opf_hessfcn and opf_consfcn ? But facing the problem in opf_args. Thanks . Mirish On Fri, Jan 9, 2015 at 3:05 PM, Abhyankar, Shrirang G. <[email protected]<mailto:[email protected]>> wrote: Are you setting the solution vector (x) size and the indexing information for extracting the elements from it correctly? On Jan 8, 2015, at 4:50 AM, "Mirish Thakur" <[email protected]<mailto:[email protected]>> wrote: Dear Prof. R. Zimmerman, I'm master student working on a project dealing with power system optimization with additional variables 'tap ratio' and 'shift' on 9 bus system by mipsopf_solver. I have made necessary changes in respective function files. Also I concern with only current flow constraints in opf_hessfcn. For that I used command like >> mpopt = mpoption('OPF_FLOW_LIM', 2); and >> runopf(case9,mpopt);. But I'm getting errors - Did not converge in 17 iterations. Error using opf_args (line 315) opf_args.m: Incorrect input parameter order, number or type Error in opf (line 199) [mpc, mpopt] = opf_args(varargin{:}); Error in opf (line 262) opf(varargin) Error in runopf (line 96) [r, success] = opf(casedata, mpopt); As I'm not much faliliar with MATPOWER so I could not understand what exactly I need to rectify in opf_args.m file. I need your help .Thanks in advance. Sincerely Mirish
