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Hi everyone,
I'm doing my bachelor s degree thesis on the subject of wind turbines. For the last part I decided to do a simulation in Trnsys. I'm not very used with the software yet, so I don't know where the error is coming from. Can someone help me asap? Best regards,
A_Weiss 23/06/2023 1:33 pm
@alexa I would like to help, but I'm going to need more information. What version of TRNSYS are you using? What specific error are you getting? Is it a TRNSYS error (where the first message is something like "X error(s) were found in the .dck. Check the .lst file for more information!"), or is it a Fortran error (something like an invalid floating point operation, floating point division by zero, etc., where the error window shows up with a big red X in it)?
If it's a standard TRNSYS error, a message will be printed to the .lst file that gives more information about the error. You can read errors in the .lst file by either navigating to TrnsysXX/MyProjects/(ProjectName).lst and opening the .lst file in any text editor, or by clicking the 'Results, warnings, errors' button at the very bottom of the left tool bar in Simulation Studio. If it's a Fortran error, there's either a bug or some poor error handling in the code itself, and I would recommend sending your project to your distributor for debugging.
Alexa Topic starter
23/06/2023 2:00 pm
Hi,
The error is like this one: "X error(s) were found in the .dck. Check the .lst file for more information!". The thing is I have the assembly, but I don't know if I put the links in the correct way.
Alexa Topic starter
23/06/2023 2:01 pm
Could you please help me checking my input data and the connections?
Ah! Now we're getting somewhere!
The errors are all telling you that there's something wrong in your "Equa" equation block, specifically with the variables in the "WS2" equation. Where did you define height1, height2, and alpha? I'm guessing the errors are because you didn't define height1, height2, and alpha. They need to be defined in the equation block on the lines above the line with the "WS2" equation.
A_Weiss 23/06/2023 3:12 pm
@alexa It also looks like you're trying to use Type15 to read 'turbina.txt'. Type15-2 is only for reading weather data files in the TMY-2 format, a very specific format that has to include a lot of information in the right order with the right formatting. Use the Type 9 data reader instead to read in your windspeed from turbina.txt.
I also noticed you have both Type25 printers printing to files called 'licenta_simulare.out'. Rename one of them to something like **_2.out or **_power.out, or whatever you like. You can change the file name on the External Files tab of the Type 25 proforma window in Simulation Studio.
@alexa What does your equation block look like? I'm expecting it to look something like the following, where "Windspeed" is the value connected from your turbina.txt file (the numbers are just placeholders, I have no idea what values are appropriate):
height2 = 30 height1 = 15 alpha = 0.5 ws2 = Windspeed*(height2/height1)^alpha
