Let’s start with 3 issues with your input data …
1. gen matrix should have 21 columns, not 10.
2. You have VMIN and VMAX columns in the bus matrix swapped.
3. You have ANGMIN and ANGMAX columns in the branch matrix swapped.
Fixing those things won’t make the OPF converge, but the power flow (which
converges already) solution should give you some indicators of where to look.
Namely, a minimum voltage magnitude of 0.742, to me indicates the need for a
lot of additional VArs somewhere.
Ray
MATPOWER Version 5.0, 17-Dec-2014 -- AC Power Flow (Newton)
it max P & Q mismatch (p.u.)
---- ---------------------------
0 2.300e+00
1 3.464e-01
2 9.258e-02
3 1.521e-02
4 5.680e-04
5 7.341e-07
6 1.094e-12
Newton's method power flow converged in 6 iterations.
Converged in 0.01 seconds
================================================================================
| System Summary |
================================================================================
How many? How much? P (MW) Q (MVAr)
--------------------- ------------------- ------------- -----------------
Buses 84 Total Gen Capacity 2805.0 348.4 to 1742.0
Generators 18 On-line Capacity 2805.0 348.4 to 1742.0
Committed Gens 18 Generation (actual) 1590.6 642.7
Loads 45 Load 1388.6 1041.4
Fixed 45 Fixed 1388.6 1041.4
Dispatchable 0 Dispatchable -0.0 of -0.0 -0.0
Shunts 29 Shunt (inj) -0.0 276.9
Branches 109 Losses (I^2 * Z) 202.04 763.39
Transformers 0 Branch Charging (inj) - 885.2
Inter-ties 0 Total Inter-tie Flow 0.0 0.0
Areas 1
Minimum Maximum
------------------------- --------------------------------
Voltage Magnitude 0.742 p.u. @ bus 58 1.052 p.u. @ bus 13
Voltage Angle -111.02 deg @ bus 43 8.82 deg @ bus 4
P Losses (I^2*R) - 20.92 MW @ line 55-67
Q Losses (I^2*X) - 53.65 MVAr @ line 55-67
> On Jan 9, 2015, at 11:41 AM, Zeya Aung [11547809d] <[email protected]>
> wrote:
>
> Hi all
>
> I’ve tried FAQ #5 - still no convergence. Please help. Attached are the excel
> file and code to convert into matpower structure. Many thanks.
>
>
>
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> <Myn-Matpower.xlsx><mepe_case.m>
>
> Best
> Zeya
>
