In MATPOWER, which uses a bus/branch model, you can use the BR_STATUS column of 
the branch matrix to indicate whether a particular branch is in-service or 
out-of-service.

    Ray


> On Dec 6, 2016, at 8:26 AM, Andrey Vieira <andre...@hotmail.com> wrote:
> 
> Good morning people!! My name's Andrey Vieira. I am a PhD student in Belém - 
> Brazil (amazon) in the area of energy systems at PPGEE-UFPA. I intend to 
> develop my thesis in the area of optimization for restoration of electric 
> energy distribution systems with some goals and restrictions. My purpose is 
> to develop an intelligent algorithm that performs a configuration in Electric 
> Power Distribution Systems for the problem of restoration in both literature 
> feeders and in the most complex (real), three-phase and unbalanced radial, 
> with a multiobjective approach and with time requirements real.
> I have read several papers on the subject and intend to use MATPOWER to 
> optimize the reconfiguration on some IEEE feeders (16,33 and 84 bars). 
> Currently, I am starting programming and I have come up against a simple 
> question regarding the manipulation of the (normally open and normally 
> closed) IEEE cases of matlab (case33, case69, case84, etc), ie: How to 
> manipulate the (Normally closed sections) and those to be closed for analysis 
> (TIE keys)?
>  Anyway, the reason for my contact is to know if anyone can help me regarding 
> the switchings in the MATPOWER IEEE case files. That is, how do I manipulate 
> (change the state of the keys)? For example, in the case of 33 bars, in the 
> initial configuration, TIE keys are part of the initial configuration of the 
> system. I do not know if I'm getting it wrong, but when running load (runpf 
> ('case33')), whether or not you have the 5 TIE keys inserted in the case33 
> files, the result is always the same. I know I must be making a mistake, I 
> just do not know what it is. I would appreciate the help.
> 
> 
> 
> "A Segurança econômica não se encontra no emprego, mas sim em seu próprio 
> poder de produzir - pensar, criar, aprender, adaptar. Esta é a verdadeira 
> independência financeira, e não a posse de riquezas. É ter poder para 
> produzir riquezas. É algo interno"
>  (Stephen Covey).

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