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fran_jo
37 ●3 ●3 ●7

Hi, I asked this question some days ago:

I am new in PSSE for Python. My question is... after reading the .raw file with RDCH, then what? How to print this information? Is this information stored in memory, I guess, so how to access to the information we have just read?

And thanks to Eli Pack I got a proper answer. But I would like to go a little bit farther in this topic. I need this data to initialize a Modelica model (which is the same model from PSSE). So, I need more than just invoking save() function once I read the .raw file. For example, I would like to have .raw data inside an array and the get data from the array to set the values in the Modelica model.

Any suggestions? How can I get .raw data after reading the file?

Greetings!

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answered 2014-10-01 21:38:26 -0500

Eli Pack

761 ●2 ●10 ●20

It sounds like you want to get a list of all the loads. To identify every load, you'll need the load IDs and bus numbers. The functions you'll need are aLoadChar and aLoadInt respectively. Use an SID of -1 to assume all buses and FLAG of 4 for all loads on those buses.

ierr, busIDs = psspy.aloadchar(sid=-1, flag=4, string="ID")
ierr, busNums = psspy.aloadint(sid=-1, flag=4, string="NUMBER")

Now that you have arrays of the bus IDs and bus numbers, you can step through them and use functions like load_data() to get more information for each load. For line data, look for the functions starting with "abrn". P.S. Remember to use the voting buttons to up-vote answers, and the tick button to mark as correct.

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answered 2014-08-07 04:08:27 -0500

Katherine
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Depending on the format in which you need the data, you can either use the "subsystem data retrieval functions" in chapter 8 of the PSS/E API, or if you just want the actual text from the .raw file, you might just want to read the file directly:

with open("system.raw") as f:
for line in f:
    print line

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answered 2014-10-01 04:54:06 -0500

fran_jo
37 ●3 ●3 ●7

Hi,

Thanks Katherine for your answer. I deep look in the API helped me a lot. At this moment I am able to retrieve information from lines and buses. I works fine!

Following with this topic, what about retrieving information of Load components? First I want to get a list of the Loads ID. I have checked the functions dealing with Loads, that they need the Load ID as a parameter but, I "do not know" this ID.

Greetings!