Dear All,
I am trying to run OPF for a case.
I receive this error:
Attempted to access branch(:,9); index out of bounds because
size(branch)=[30,7].
Those good with coding in Matlab ,could you give me some hints where could
I have made a mistake?
Thank you
This error appears because you are trying to access the 9th column but from
the information in size(branch) it seems that you only have 7 columns in the
branch matrix so you cannot access a column that does not exist. Hope this
helps.Angelina
Date: Tue, 23 Jul 2013 16:18:43 +0100
Subject: out
Dear Dr Zimmerman,
Running an OPF in matpower means that
1. Bus types play no role (eg slack, PV, PQ etc)
2. All values for Real Power generation and reactive power generation are
unknown
3. All values for bus_voltages and voltage phase angles in buses, are unknown
as well
4. As a result, al
On Jul 23, 2013, at 9:42 AM, spyros gian wrote:
> Dear Dr Zimmerman,
>
> Running an OPF in matpower means that
>
> 1. Bus types play no role (eg slack, PV, PQ etc)
Yes.
> 2. All values for Real Power generation and reactive power generation are
> unknown
Yes.
> 3. All values for bus_volta
Make sure that the data format that you are using is compliant with MatPower.
Take a look at how the MatPower data files are written and create your data
file accordingly.
Shri
On Jul 23, 2013, at 8:23 AM, angelina sirri wrote:
>
> This error appears because you are trying to access the 9th
fmincon finds local optima.
However, I have the impression that interior point methods find global optima.
I am not sure though.
1.Does matpower use fmincon in its source code to do a non-linear ACOPF?
2.Does matpower use interior point method for the non-linear ACOPF ?
3. Since DC-OPF is linea
Shri is correct … with some *very* minor tweaks … the only bus type that
matters is the REF bus which determines the voltage reference for the system,
and the voltage angle at that bus is set to the corresponding value in the bus
matrix, which is usually set to 0, but need not be.
And, yes, the
1. If you set OPF_ALG = 520, MATPOWER will use fmincon (which now uses an
interior point method by default).
2. MATPOWER's default solver is an interior point solver (see Section 5.5 in
the User's Manual).
3. Depending on the cost function, the DC OPF can be a QP or an LP, and yes,
the optimum s
Thank you Dr Zimmerman.
I am running an ACOPF in matpower. In the mpc.bus I set for bus 13: Vm=1 , Va =
0, type = 3.
So bus 13 is my reference bus. This means that in the results I will take that
voltage at bus 13 has an angle of 0 degrees, and a magnitude of 1 pu?
Ie , in your reply you wro
>From my understanding,
For the AC electricity, the matter is not the absolute value of the voltage
angle, the differences between different bus voltage angles are what you
want to know. So people set one bus as the reference bus and usually set
the angle as 0.
I believe that Vm here is from the
Hi all,
I'm trying to add power flow analysis to my simulink model.
I added a MATLAB function in simulink and run matpower command such as load
case, runpf, eta.
However, I received this errors:
Try and catch are not supported for code generation.
Function 'loadcase.m' (#54.4881.5039), line 12
This stackoverflow post states that some functions, these could be even matlab
built-in functions, cannot generate auto-code. It suggests the use of
'extrinsic' to avoid this issue.
Shri
On Jul 23, 2013, at 5:31 PM, Fang-Yu Liu wrote:
> Hi all,
>
> I'm trying to add power flow analysis to my
Hi Shri,
Thanks for your prompt respond.
But what do you mean by use 'extrinsic'?
How can I do that?
Thanks,
Fang-Yu
Shri 於 2013/7/23 下午9:12 寫道：
> This stackoverflow post states that some functions, these could be even
> matlab built-in functions, cannot generate auto-code. It suggests the use
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