I was modify the code for simplicity. As a result, I use the same rule as 
MATPOWER, but the result are not converged because of lambda for equality often 
become NaN, i don't know how MATPOWER to gerantee the problem.  I have attached 
my code.
the main file is AMAIN_OPF2





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舒德兀(Alex)

schools of electrical engineering and automation ,Tsinghua University,China..


At 2013-04-23 04:23:15,"Ray Zimmerman" <[email protected]> wrote:
Are you saying you have modified the interior point algorithm (MIPS) used by 
MATPOWER, or something else? It's impossible to suggest what the problem may be 
without a clear description of what you are doing.


-- 
Ray Zimmerman
Senior Research Associate
419A Warren Hall, Cornell University, Ithaca, NY 14853
phone: (607) 255-9645







On Apr 21, 2013, at 11:03 PM, 舒 <[email protected]> wrote:


Hello,
recently ,i modify the OPF with interior point algorithm. for the 
 f_fcn = @opf_objfcn;   %目标函数  可以包括grad+hessian 
 gh_fcn = @opf_constraintsfcn;  %等式约束+grad 
 ipm_hessian = @opf_hessmatrixfcn;  %hessian  


are the same, but the result is different with matpower .I don't know why.who 
can help me





--


-----------------------------------------------------

舒德兀(Alex)

schools of electrical engineering and automation ,Tsinghua University,China..


At 2013-04-22 01:41:24,"angelina sirri" <[email protected]> wrote:

Hi everyone!
I am running ac opf in case ieee24 bus, doing a reliability analysis.In some 
hours the opf does not converge and I observe that in mpc.gen Qg exceeds the 
Qmin and Qmax limits. During these hours, the there is not a failure  , and all 
the branches and generators have status=1. When this problem appears in an opf 
which are the possible solutions?What I should correct, take into account or 
change in order not to exceed the reactive power limits??
Any help would be great!
Regards,
Angelina






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