Load flow app showing error

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Mosharof Hossain
Mosharof Hossain 2024-1-23
评论： Cesar 2025-3-24
Doing load flow analysis in simulink of the following problem. The model runs without any error, but when using load flow app it shows "An error in the model prevented the load flow analysis".
I have attached the simulation file.
Thanks.

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Sreeram
Sreeram 2024-9-4
编辑：Sreeram 2024-9-4
Ran in:
Hi Mosharof,
I was able to reproduce the error when I ran the command “powerLoadFlow” in the MATLAB command prompt to open the "Load Flow Analyzer" app.
I see that the block labelled ‘Bus3’ is incorrectly connected to ‘Slack1’ (see the figure below).
Notice that the signals a and c from ‘Bus3’ are connected to C and A ports of 'Slack1’ respectively. Here’s how you can correct it:
I am attaching the fixed SLX file for your reference.
To easily find such mistakes, you may run the following:
load_system('load_flow.slx');
power_loadflow(gcs,'solve')
Error using ThreePhaseLoadFlowBar
The Load Flow Bus block labeled 'BUS_3' is connected to load flow blocks that are not properly connected. Verify that A, B, and C phase of every block connected to the load flow bus are properly connected to the A,B, and C phases of the network respectively.

Error in psbsort

Error in powersolve

Error in power_analyze_prv

Error in power_analyze (line 43)
[varargout{1:nargout}] = power_analyze_prv(varargin{:});

Error in LoadFlowTool

Error in power_loadflow (line 131)
[varargout{1:nargout}] = LoadFlowTool(Parameters{1:end});
You may read more about the “power_loadflow” function here:
https://www.mathworks.com/help/releases/R2023b/sps/powersys/ref/power_loadflow.html
I hope this helps!
  2 个评论
sregmi
sregmi 2025-2-1
Thank you. This was so helpful for me.
Cesar
Cesar 2025-3-24
Thanks so much for this. I have been fighting for this problem for months!

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