Respected Mohamed Abd-alrahman Gabr
*I have been working on DC State Estimation and need to under stand the
code. Can you please share matpower code for DC state estimation, please. *
*Regards*
*Saeed Ahmed*
Regards
Saeed Ahmed
On 24 March 2017 at 14:08, mohamed gabr <mohamed_
nction or variable 'makeIncidence'.
Error in test1 (line 73)
[Ainc] = makeIncidence(cd.bus,cd.branch)
Regards
Saeed Ahmed
Thanks a lot Sir
Regards
Saeed Ahmed
On 2 August 2017 at 13:01, Carlos E Murillo-Sanchez <
ce.murillosanc...@gmail.com> wrote:
> Saeed: you need to add the sdp_pf sub-folder to MATLAB's execution path.
>
> carlos.
>
> Saeed Ahmed wrote:
>
> Hi Community,
>
I need to perform DC State Estimation and calculate the Real Power Flow in
the lines. Need help please.
Regards
Saeed Ahmed
) + 1j*b(n);
end
end
end
ybus
%% Formation of B-Bus
Bp=-imag(ybus-diag(sum(ybus)));
Bpp=imag(ybus)
Regards
Saeed Ahmed
Respected Jose Luis Marín
Thanks for you guidance. I will try to be more precise and specific here.
Regards
Saeed Ahmed
PhD Student
University of Ulsan, Republic of Korea
On 17 July 2017 at 22:30, Jose Luis Marín <mari...@aia.es> wrote:
> I don't mean to be disrespectful, but y
angle differences are assumed to be small i.e. sin(h) = h and
cos(h) = 1.
• Magnitudes of bus voltages are set to 1.0 per unit (flat voltage
profile).
• Tap settings are ignored.
Regards
Saeed Ahmed
On 17 July 2017 at 23:41, Ray Zimmerman <r...@cornell.edu> wrote:
> You can solve th
Thank you Sir I am really grateful...
Now after a lot of reading and following your guidance i am understanding
how to start working on matpower. Your cooperation is highly appreciated. I
will keep on seeking guidance , please.
Regards
Saeed Ahmed
On 20 July 2017 at 22:59, Ray
* x_estimated= [ Inverse{ (Transpose(H)) . W. H) }
. Transpose (H).W] z (3)*
(W is a diagonal matrix with elements that are reciprocal of variance)
Regards
Saeed Ahmed
On 21 July 2017 at 18:33, Saeed Ahmed <saeed.ahme...@gmail.com> wrote:
>
> Respected All,
>
> For Cal
Dear Ehsan
Refer to this link please . I hope it may be useful
https://www.youtube.com/watch?v=NG29E1OGRV8
Regards
Saeed Ahmed
On 25 July 2017 at 17:20, Ehsan Hejri <ehsan.hejri@gmail.com> wrote:
> Hi everybody,
>
> I am using MATLAB R2017a and I am going to install matpo
that are reciprocal of
variance and z is the real power injection matrix into buses
)
Regards
Saeed Ahmed
2.26
Total: 4.955
51.31
Regards
Saeed Ahmed
On 27 July 2017 at 17:01, 田其生 <921542...@qq.com> wrote:
>
> You can directly get the result in matpower.
> A example(
(mpc.baseMVA, mpc.bus, mpc.gen)) * mpc.baseMVA
2. Transmitted Active power from bus i to bus j ( I need to calculate
this now)
Please guide me ...
Regards
Saeed Ahmed
On 28 July 2017 at 15:21, Saeed Ahmed <saeed.ahme...@gmail.com> wrote:
> Thanks for your reply , But may be i need to exp
How to calculate the real power transmitted (Matrix) from Bus i to Bus j in
matpower?
Regards
Saeed Ahmed
Hi All,
I need to calculate the the injected power(Pi) matrix at each bus . It is
equal to the generated power(Pg) - demand/load power. Now how to extract it
using matpower
nts Matrix
Z_est=H*ang_est; % Estimated Measurements
Regards
Saeed Ahmed
nce Matrix (0.01)
W= R^-1; % Reciprocal of Diagonal Matrix Elements
%% Step-4 Estimate the State(Voltage Angles) WLS Criteria
Ang_est=(H'*W *H)^-1* H' * W * Z_M
%% Step-4 Make the Estimated Measurments Matrix
Z_est=H*Ang_est; % Estimated Measurements
Regards
Saeed Ahmed
On 6 August 2017 at 15
would request you to guide me to rectify my fault.
1) Is the construction of H Matrix is right, please
2) What is my mistake
m file is attached herewith, please.
Regards
Saeed Ahmed
%% Select a case and run AC Power Flow.
mpc = loadcase('case4gs');% Load case data
pfresult
Sorry for my mistake... the right m file is here
Regards
Saeed Ahmed
On 21 August 2017 at 14:45, Saeed Ahmed <saeed.ahme...@gmail.com> wrote:
> Hi Community,
>
> I have developed the *DC State Estimation Code* for Approximating the
> power flow.
> I took the simplest cas
Hi, community,
Need your guidance regarding varying the load/ operation point during state
estimation using MATPOWER?
I am getting the right results in DC State Estimations. Now I want to the
check the results for varying operation point / varying load.
How to vary operation point (Load)
Thanks very much, Professor Ray Zimmerman
Regards
Saeed Ahmed
On 15 May 2018 at 22:09, Ray Zimmerman <r...@cornell.edu> wrote:
> You can use scale_load()
> <http://www.pserc.cornell.edu/matpower/docs/ref/matpower6.0/scale_load.html>
> to
> modify the load.
>
>
Hi Ahmadi...
First you need to understand the DC or linear State Estimation . You can
find Chap 2 of Ali Abur's Book.
After that you can use the built-in functions in MATPOWER for the
formulation of H vector and this all becomes simple once you have solid
understanding of theory...
Regards
Saeed
The best i can do is to share a code with you... This code estimates the
power flow using AC estimation criteria...
You have to modify it according to your needs for DC state estimation ...
When you have any progress let me know... you have to try and don't give
up...
Regards
Saeed Ahmed
Did you try this function for calculating the H Matrix
[Bbus, Bf, Pbusinj, Pfinj] = makeBdc(mpc.baseMVA, mpc.bus, mpc.branch);
Regards
Saeed Ahmed
On 13 April 2018 at 23:09, Saeed Ahmed <saeed.ahme...@gmail.com> wrote:
> The best i can do is to share a code with you...
Hi All
How to convert the Real values obtained in DC state estimation to per unit
(p.u) values, please?
Regards
Saeed Ahmed
Thanks a lot, please.
On Sat, Dec 22, 2018, 8:09 AM Ray Zimmerman To convert from MW to p.u. divide by the value of mpc.baseMVA.
>
> Ray
>
>
> On Dec 20, 2018, at 7:26 PM, Saeed Ahmed wrote:
>
> Hi All
>
> How to convert the Real values obtained in DC state es
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