dear Dr Houssem
make sure that R and X are in P.U.
It'll works.


On Sat, Mar 29, 2014 at 10:30 AM, Bouchekara Houssem <
[email protected]> wrote:

>  Dear All
>
> I am trying to solve the power flow problem in a radial distribution
> system. However, due to the high level of R/X it is not working (when I
> divide R by 5 it works). I have tried the 4 PF algorithms implemented in
> MATPOWER without any success. The data of this network is attached).
>
> Please give me some advises to fix this issue.
>
> Best Regards
>
> Dr Houssem
>
>
>
> % The main Programme
>
> opt = mpoption('VERBOSE', 0, 'OUT_ALL', 1,'PF_ALG',2,'PF_MAX_IT_FD',1000);
>
> [MVAbase, bus, gen, branch, success, et] = runpf('case3',opt);
>
>
>
>
>
> function [baseMVA, bus, gen, branch] = case3
>
> % CASE3 Power flow data for 12 bus, 11 gen case
>
> %% system MVA base
>
> baseMVA = 100;
>
> %%  bus data
>
> %   bus_i   type    Pd      Qd  Gs  Bs  area    Vm  Va  baseKV  zone
> Vmax    Vmin
>
> bus =   [
>
>     1   3   0       0       0   0   1   1   0   13.8    1   1.1 0.9;
>
>     2   1   0.6     0.6     0   0   1   1   0   13.8    1   1.1 0.9;
>
>     3   2   0.4     0.3     0   0   1   1   0   13.8    1   1.1 0.9;
>
>     4   2   0.55    0.55    0   0   1   1   0   13.8    1   1.1 0.9;
>
>     5   2   0.3     0.3     0   0   1   1   0   13.8    1   1.1 0.9;
>
>     6   2   0.2     0.15    0   0   1   1   0   13.8    1   1.1 0.9;
>
>     7   2   0.55    0.55    0   0   1   1   0   13.8    1   1.1 0.9;
>
>     8   2   0.45    0.45    0   0   1   1   0   13.8    1   1.1 0.9;
>
>     9   2   0.4     0.4     0   0   1   1   0   13.8    1   1.1 0.9;
>
>     10  2   0.35    0.3     0   0   1   1   0   13.8    1   1.1 0.9;
>
>     11  2   0.4     0.3     0   0   1   1   0   13.8    1   1.1 0.9;
>
>     12  2   0.15    0.15    0   0   1   1   0   13.8    1   1.1 0.9;
>
>     ];
>
>
>
> %% generator data
>
> % bus Pg Qg Qmax Qmin Vg mBase status Pmax Pmin
>
> gen = [
>
>     12 5 0 .2 -.2   1 100 0 1.1 0;
>
>     11 5 0 .2 -.2   1 100 0 1.1 0;
>
>     10 5 0 .2 -.2   1 100 0 1.1 0;
>
>     9  5 0 .2 -.2   1 100 0 1.1 0;
>
>     8  5 0 .2 -.2   1 100 0 1.1 0;
>
>     7  5 0 .2 -.2   1 100 0 1.1 0;
>
>     6  5 0 .2 -.2   1 100 0 1.1 0;
>
>     5  5 0 .2 -.2   1 100 0 1.1 0;
>
>     4  5 0 .2 -.2   1 100 0 1.1 0;
>
>     3  5 0 .2 -.2   1 100 0 1.1 0;
>
>     1  0 0 100 -100 1 100 1 0 0;
>
>     ];
>
>
>
> %%  branch  data
>
> %   fbus    tbus    r   x   b   rateA   rateB   rateC   ratio   angle
> status
>
>
>
> branch  =   [
>
>     1   2   1.093   0.455   0   250 250 250 0   0   1;
>
>     2   3   1.184   0.494   0   250 250 250 0   0   1;
>
>     3   4   2.095   0.873   0   250 250 250 0   0   1;
>
>     4   5   3.188   1.329   0   250 250 250 0   0   1;
>
>     5   6   1.093   0.455   0   250 250 250 0   0   1;
>
>     6   7   1.002   0.417   0   250 250 250 0   0   1;
>
>     7   8   4.403   1.215   0   250 250 250 0   0   1;
>
>     8   9   5.642   1.597   0   250 250 250 0   0   1;
>
>     9   10  2.89     0.818  0   250 250 250 0   0   1;
>
>     10  11  1.514   0.428   0   250 250 250 0   0   1;
>
>     11  12  1.238   0.351   0   250 250 250 0   0   1;
>
>     ];
>
>
>
> return;
>
>
>

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