Hello All,
I would know for optimization by matlab the  following procedure:

I know that savecase() function is used to create a MATPOWER case file from a
 case struct. For example, I suppose want to take an existing case file,
 say case30.m, and apply a set of changes to it using apply_changes() and
 save the result as a new MATPOWER case file called case30new.m. The solution 
could to be with the following code …

 mpc0 = loadcase('case30');
 mpc = apply_changes(label, mpc0, chgtab);
 savecase('case30new', mpc);

Now I can use case30new as you would any of the included cases. E.g.
 r = runopf('case30new');


What would the chgtab array look like if I wanted to just
delete buses and branches from the case30?






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