Hello Deemah,
I understand that you are facing a problem while running a file iteratively through a loop in MATLAB.
The error you are encountering indicates that the Simulink model was modified after saving the initial operating point. This inconsistency prevents the model from correctly loading the operating point during the second iteration.
To resolve this issue, you can consider two possible approaches:
- Reordering the code: Move the load flow calculation (‘power_loadflow’) before creating the simulation input object (‘siminOP2’) in the second iteration. By doing this, you ensure that the model is not modified between the load flow calculation and saving the operating point. Here is an example of how you can restructure your code.
elseif i<3
LF = power_loadflow(pdmodel,'solve');
siminOP2 = Simulink.SimulationInput(pdmodel);
siminOP2 = setInitialState(siminOP2,op1.xFinal);
siminOP2 = setModelParameter(siminOP2,'StopTime',num2str(time+step),...
'SaveFinalState','on','SaveOperatingPoint','on');
op1 = sim(siminOP2);
2.Explicitly saving and loading the operating point: Another option is to use the ‘save’ and ‘load’ functions to save and load the operating point explicitly. This approach ensures that the correct operating point is used in each iteration. Here's an example of how you can modify your code to implement this approach.
elseif i<3
load('op1.mat', 'op1'); % Load operating point
siminOP2 = Simulink.SimulationInput(pdmodel);
siminOP2 = setInitialState(siminOP2,op1.xFinal);
siminOP2 = setModelParameter(siminOP2,'StopTime',num2str(time+step),...
'SaveFinalState','on','SaveOperatingPoint','on');
op1 = sim(siminOP2);
save('op1.mat', 'op1'); % Save operating point
Hope it helps to resolve the issue.
Regards,
Sankalp
