Hello friends,
I’m working on (1000 bus system) reactive power dispatch problem. I have modeled grid into matpower case file and I’m getting the results of *runpf*. But when I use *ACOPF* it fails to converge. I have modeled grid into two methods 1) I used all renewable energy sources generation, pump storage power plant and cross border energy transfer as negative load. And all conventional power plants as generators. Dispatch of conventional generators is equal to residual load so demand is equal to generation. Further I have increased limits of slack generator to supply system losses and kept rest of generators dispatch constant by *Pmax=Pmin=Pg*. Also *RATE_A* limits should be unchanged. (Necessary condition for project). 2) In other way all renewable energy sources generation, pump storage power plant and cross border energy transfer are modeled as generators and put next to all conventional power plants. And in *gencost *matrix I used zero variable cost for renewable generation. Slack generator and rest of the conditions are set as it is in first approach. My question is in both modeling I got *runpf* successfully converged but I’m not getting convergence for *ACOPF*. So, I checked branch limits on some branches which I found overloaded by analyzing results of *res= runpf (mymodel)*. To avoid such overloading I want to change distribution pattern of load which might be cause of overloading of branches. I tried *load2disp* function to get curtailment on load but every time I got failure in convergence in *runopf*. I went through below mentioned discussions- https://www.mail-archive.com/matpower-l%40cornell.edu/msg04423.html https://www.mail-archive.com/matpower-l%40cornell.edu/msg00790.html https://www.mail-archive.com/matpower-l%40cornell.edu/msg01203.html Is there any way to see curtailment on load or negative generation (renewable generation/ cross border transfer of energy) so that I can redistribute that load /negative generation on other bus bars so that I can avoid overloading of branches and get successful convergence? Many thanks. Regards Mirish Thakur KIT University
