Mr. Ray, that's exactly it. I will try to exemplify the question again using
the 16 buses radial system. In this system, there are 3 bars (3 substations)
that provide the power for the entire electrical network. This system consists
of three feeders. With this, there is one substation for each feeder.
[cid:75f08e88-f6da-460a-8a51-83b014a765ec]
My question is can I consider all the substation bars (1,2 and 3) as generation
bars (PV)? For this consideration, the radial system will be considered as a
meshed system. See example below.
With this, the radial distribution system of 16 buses will be considered as a
meshed system. With this, the results will be affected?
%% bus data
% bus type Pd Qd Gs Bs area Vm Va baseKV zone Vmax Vmin
mpc.bus = [
1 3 0.0 0.0 0 0 1 1.00 0 11 1 1.05 0.950;
2 3 0.0 0.0 0 0 1 1.00 0 11 1 1.05 0.950;
3 3 0.0 0.0 0 0 1 1.00 0 11 1 1.05 0.950;
4 1 2.0 1.6 0 0 1 1.00 0 11 1 1.05 0.950;
5 1 3.0 1.5 0 1.1 1 1.00 0 11 1 1.05 0.950;
6 1 2.0 0.8 0 1.2 1 1.00 0 11 1 1.05 0.950;
7 1 1.5 0.2 0 0 1 1.00 0 11 1 1.05 0.950;
8 1 4.0 2.7 0 0 1 1.00 0 11 1 1.05 0.950;
9 1 5.0 3.0 0 1.2 1 1.00 0 11 1 1.05 0.950;
10 1 1.0 0.9 0 0 1 1.00 0 11 1 1.05 0.950;
11 1 0.6 0.1 0 0.6 1 1.00 0 11 1 1.05 0.950;
12 1 4.5 2.0 0 3.7 1 1.00 0 11 1 1.05 0.950;
13 1 1.0 0.9 0 0 1 1.00 0 11 1 1.05 0.950;
14 1 1.0 0.7 0 1.8 1 1.00 0 11 1 1.05 0.950;
15 1 1.0 0.9 0 0 1 1.00 0 11 1 1.05 0.950;
16 1 2.1 1.0 0 1.8 1 1.00 0 11 1 1.05 0.950;
];
Or should I always consider a reference bar (for example, bar 1) and the other
two as generation bar (bars 2 and 3)?
________________________________
De: [email protected]
<[email protected]> em nome de Ray Zimmerman
<[email protected]>
Enviado: terça-feira, 30 de maio de 2017 20:17
Para: MATPOWER discussion forum
Assunto: Re: How to indicate in MATPOWER the use of several substations in the
cases of radial distribution systems?
I’m not sure I understand what you mean by a radial system with more than one
substation. You definitely don’t want to set multiple buses of type REF, though
you could use type PV for all but one of the substations, but that is
equivalent to turning a radial system into a meshed system.
Ray
On May 26, 2017, at 10:27 AM, Andrey Vieira
<[email protected]<mailto:[email protected]>> wrote:
Hi All! I have a question about the use of several substation bars in the case
of radial distribution systems with more than one substation.
Examples:
A) Case 16 buses : it has 3 substations;
B) Case 135 buses: it has 2 substations;
C) Case 84 buses : it has 11 substations.
In the case of 84 buses, for example, can I identify all substation buses with
different numberings and indicate that all 11 buses are of
type 3 in the mpc.bus matrix? Instead of numbering all 11 with the same number
(1 for exemplo)?
Can anybody advice on representation these sources in MATPOWER?
Andrey R Vieira
