Importing Measured Climate Data

[developer_fw]

Hi tb11,

there is no possibility to mark missing data.

How much data is missing? Does it happen all the time or is there, for example, a week's worth of data missing?

Best regards,
Frederik

[Niklas]

On 7/22/2021 at 10:48 AM, developer_mh said:

it means that you irradiation data and the calculated position of the sun do not fit together

Hi @developer_mh,

I don't really understand what you mean by that. How are these two parameters linked? And why should the simulation behave differently whether or not I payed attention to converting summer and wintertime?

I get the same error message as @Endika: "MinuteSplitter: Input data and clear sky data are not sync.". When I import my hourly weather data file into PV*Sol, everything is working fine. I tried to simulate and everything works as intended. But when I switch so synthesized minute values, I get this error message.

I tried out check out my data visualy as you discibed, but to my untrained eye I think that it looks in sync.

I have to admit that my weather data is kind of stiched together, since I had to combine the data of different weather stations. Could you maybe have a look on my weather data and tell me what I have been missing? Thanks in advance!

new_weather_data_2022.dat

Kind regards

Niklas

[developer_mh]

Hi Niklas,

the check you performed for 22.03. was absolutely correct, that was what I meant. Now, if you continue to check throughout the year, you will notice that from July on the data starts to get out of sync:

This is the reason why PV*SOL is not able to generate one-minute values.

Hope that helps, kind regards,

Martin

[Niklas]

39 minutes ago, developer_mh said:

Hope that helps

Hi Martin,

thank you very much. That was just the right hint for me to spot my mistake .

As I mentioned before, I had to combine weather data from multiple weather stations in relative close proximity. I worked on a relative complex python script, to concatenate and convert everything into one file readable by PV*SOL. My mistake was that I haven't payed attention to the format of the different timestamps. While some data was saved under a system time, other data was saved in the UTC format. In summertime I got an offset of +2 hours on days, where I had to calculate the average with the UTC data. I quickly aligned my timestamps and voilà ... everything is working fine.

I guess the core message of my question is:
Folks, keep an eye on your timestamps while merging different data sets .

Again, thank you very much. Kind regards,

Niklas

[Kavish Chetty]

Hi I have a file i want to upload to pvsol for irrdiance data but when I try upload it, all it says is "Conversion error. Format Error?"

No way of fix or other method is given. 

What can I do to fix this?

 

Here is the data:

 

"Berry Rd"
-26.1732,28.1058,1543,2,-30 

Ta      Gh      FF      RH
0.0    0.0    0.0    0.0
0.0    0.0    0.0    0.0
0.0    0.0    0.0    0.0
0.0    0.0    0.0    0.0
0.0    52.0    0.0    0.0
0.0    272.0    0.0    0.0
0.0    513.0    0.0    0.0
0.0    736.0    0.0    0.0
0.0    919.0    0.0    0.0
0.0    1048.0    0.0    0.0
0.0    1112.0    0.0    0.0
0.0    1104.0    0.0    0.0
0.0    950.0    0.0    0.0
0.0    756.0    0.0    0.0
0.0    702.0    0.0    0.0
0.0    475.0    0.0    0.0
0.0    233.0    0.0    0.0
0.0    30.0    0.0    0.0
0.0    0.0    0.0    0.0
0.0    0.0    0.0    0.0
0.0    0.0    0.0    0.0
0.0    0.0    0.0    0.0
0.0    0.0    0.0    0.0

...

Edited October 18 by developer_mh
cut off the rest of the climate data

[hotline_oh]

Dear Kavish Chetty,

Thank you for your inquiry.

The second line in the file must be in the following format:
-26.1732,-28.1058,1543,2,-30

The second line contains latitude, longitude, altitude, time zone and a flag.
Latitude: North is positive, south is negative.
Longitude: West is positive, East is negative. (Attention, usually east is positive, here it’s the other way around.)

Attached you will find the file with the climate data for the import.

Johannesburg Berry Rd Climate Data.dat