Power System Analysis Toolbox (PSAT)
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I have been using PSAT to model a 24 bus bar power system, which is in PSAT Library. Yet, I have an error during power flow test. This error pops up, when I click on Power Flow button:
Error using fprintf Invalid file identifier. Use fopen to generate a valid file identifier.
Error in fm_wcall (line 49) count = fprintf(fid,'function fm_call(flag)\n\n');
Error in fm_spf (line 41) fm_wcall;
Error in fm_set (line 720) fm_spf
Error while evaluating uicontrol Callback
Although I do know that PSAT is not a TOOLBOX supported by matlab, even your short reply could be certainly helpful.
21 Comments
Mojtaba Heydari
on 21 Dec 2014
You need to rerun MATLAB as an administrator and then run PSAT again in command window. Hoping that would fix the error.
Basile CLAUZEL
on 22 Nov 2016
It works for me, thank you very much !
Jyles Tiña
on 6 Sep 2018
It worked for me also. Thank You!
SAIFUL ISLAM
on 30 Oct 2018
Dear Mojtaba Heydari,May Allah bless you.Thank you.
Olatunde Ogundeji
on 19 Dec 2018
Thanks So much It Works
Lucas Lameira
on 16 Jan 2019
It worked, thank you so much!
Richard Joseph
on 28 Jun 2019
Moved: DGM
on 1 May 2024
Hello Gentlemen, Dr., and Prof.:
Help me here.
I installed PSAT in MATLAB but when running power flow it shows:
Error using fprintf Invalid file identifier. Use fopen to generate a valid file identifier.
Error in fm_wcall (line 49) count = fprintf(fid,'function fm_call(flag)\n\n');
Error in fm_spf (line 41) fm_wcall;
Error in fm_set (line 720) fm_spf
Error while evaluating uicontrol Callback
Please help me.
Chibuike Ohanu
on 4 Aug 2019
Please help me out with the solution. I'm having the same problem
Chibuike Ohanu
on 4 Aug 2019
Please help me My PSAT is displaying Registration key is invalid. P1.m not found
Walter Roberson
on 4 Aug 2019
Psat registration keys would not seem to be a matlab problem?
Walter Roberson
on 5 Aug 2019
psat2.1.10 does not mention "registration" even once in the code, and has no P1.m in it. It does have a variable named P1 in a couple of the methods.
Chibuike Ohanu
on 13 Aug 2019
I am using MATLAB 2018a .Could it be a problem?
Walter Roberson
on 14 Aug 2019
I searched through the entire PSAT source code and it does not have even one reference to "registration".
Where did you download PSAT from?
Stalin Tipán
on 5 Sep 2019
SI es necesario simplemente ejecutar como administrador Matlab y se soluciona el problema. Muchas gracias :)
Muataz Fahad
on 15 Oct 2019
Moved: DGM
on 1 May 2024
Hello sir.
Have you gotten something? Is the problem solved? Because I have the same problem now. Please help me.
shaniamiranda polopadang
on 25 Mar 2020
i have the same eror, and i use macbook. and i can't run as administrator. please help
ihsan mousa
on 26 Mar 2020
Edited: ihsan mousa
on 26 Mar 2020
Yes, it solved.Thanks.
malek malikou
on 13 May 2020
plz can anyone help me, I have been using PSAT to model a 30 bus power system, and i can't find where i put this data.

Noor Ainul Fazira Abd Rahim
on 18 May 2020
i have the same problem. when i run the psat toolbox, the diagram becomes red colour and said that there are too many argument, so i cant save my test files. how can i fix this?
Walter Roberson
on 18 May 2020
With regards to the problem with permission being denied, see my Answer below, https://www.mathworks.com/matlabcentral/answers/91079-power-system-analysis-toolbox-psat#answer_421960
Answers (6)
Walter Roberson
on 25 Mar 2020
2 votes
This problem can occur if you start running psat from the psat directory and you do not have write access to the psat directory.
psat keeps a record of which directory you were in when you start running it, and in some cases tries to write file fm_call.m into that directory.
The work-around is to make sure that psat is on you MATLAB path, and to start it running by name when you are cd'd to a directory that you have write access to.
2 Comments
Ezechukwu Ani
on 9 Jul 2023
Well said sir, What can be done to resolve this problem? Thank you Nelson
Ezechukwu Ani
on 31 Aug 2023
You can select the file and click on add path,this will add your file directory to PSAT toolbox
samjhana rai
on 1 Mar 2021
1 vote
Hello everyone;
I m trying to run the load flow usng the PSAT, I have 5 generators and it is a 1 slack and 4 PV bus system. But when we run the power flow we are not getting the load flow, we are getting the error as, ''the convergence is increasing'' and ''convergence likely not reachable.'' What could be th possible problems? would be glad if anyone of you coould answer.
2 Comments
PRITAM KUMAR NIRALA
on 25 Feb 2022
I am also getting same message could you please help me how to resolve it
Gaurav rawat
on 24 Feb 2023
please re check the data u putting in simulation
HUSEYIN BAKIR
on 13 Jan 2017
Edited: Image Analyst
on 1 Jan 2020
0 votes
I don't have the PSAT toolbox in MATLAB? How can I get the PSAT toolbox?
7 Comments
Gary Singh
on 4 Aug 2019
Download it from link given below:
Walter Roberson
on 1 Jan 2020
The web site for that seems to have trouble, but by using the Internet Archive I am able to find the link https://web.archive.org/web/20190507161224/http://faraday1.ucd.ie/archive/psat/psat-2.1.10-mat.zip that retrieves PSAT 2.1.10
Walter Roberson
on 1 Jan 2020
I have sent email to the professor noting the problems reaching the site.
dursun bahadir celik
on 17 Mar 2021
Merhabalar psatı ındırıyorum hıcbır matlab surumune olmuyor ne yapmam gerekıyor yardımcı olurmusunuz
Walter Roberson
on 17 Mar 2021
I just tried the link I posted above on archive.org and I was able to download the file without difficulty.
dursun bahadir celik
on 17 Mar 2021
PSAT LİNK PLEASE ? CAN YOU SEND ME
Abdulmunim Guwaeder
on 20 Mar 2017
0 votes
how can I install PSAT
3 Comments
Walter Roberson
on 20 Mar 2017
GAURAV
on 21 Dec 2018
Edited: Image Analyst
on 1 Jan 2020
After installing PSAT this error shows
MATLAB Version 9.0
Failed Conversion from simulink model : Permision Denied
Index exceeds matrix dimensions
Data conversion failed.
Gary Singh
on 4 Aug 2019
Edited: Image Analyst
on 1 Jan 2020
Watch it to add the toolbox to MATLAB.
Ismael Abdulrahman
on 31 Dec 2019
0 votes
2 Comments
Image Analyst
on 1 Jan 2020
Edited: Image Analyst
on 1 Jan 2020
That seems to be a link to a ZIP file. Is the Toolbox inside that zip file? This could be helpful since the other links the others gave seem to be dead links now.
Walter Roberson
on 1 Jan 2020
It appears to be a link to code for some paper.
Hamed
on 7 Nov 2022
0 votes
Hello guys,
I'm running power flow in PSAT and in my network, for the slack bus, there are two generators connected. The PSAT does not perform the power flow and says: "More than one slack generators are connected to the same bus".
What should I do? Please help me
1 Comment
Ezechukwu Ani
on 12 Jul 2023
Remove the rectangular PSAT icon from the second generator only place it on your slack bus, insert pq or pv on the second generator.
All the best
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