Thank you, Mr. Ray. How should I proceed with the insertion of the islands? For 
example in case 33 buses, I will extract the subsystems from bar 2 to 22 
(branches: 2-19 ; 19-20; 20-21 and 21-22). How would the mpc matrix be for such 
a situation?


De: [email protected] 
<[email protected]> em nome de Ray Zimmerman 
<[email protected]>
Enviado: terça-feira, 13 de dezembro de 2016 13:48
Para: MATPOWER discussion forum
Assunto: Re: Operation of the load flow for isolated sections - MATPOWER

If the isolated portions have adequate generation to operate as an island, then 
the only thing necessary is to make sure that each island has its own reference 
bus. In your case, however, I suppose there are de-energized sections. MATPOWER 
does not automatically handle the de-energized sections, so you will have to 
extract the section that is still live using 
extract_islands()<http://www.pserc.cornell.edu//matpower/docs/ref/matpower6.0b2/extract_islands.html>,
 then only run the power flow on that island.

   Ray


On Dec 12, 2016, at 2:33 PM, Andrey Vieira 
<[email protected]<mailto:[email protected]>> wrote:



Good afternoon people! By performing load flow tests  in IEEE radials feeders 
cases,
such as 33, 69, 84 bars, I noticed that the study does not work when I leave 
isolated
sections (eg in the case 33 buses, runpf('case33'), opening section 3-23 causes 
error). Is there any
 way in MATPOWER to perform load flow tests with isolated branches?

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