PSSE Raw files Version 34

[aditya-834]

I have a raw file for the WECC 240 bus model created using PSSE V34 and i am facing errors when trying to parse the file. Is there support for V34 raw files? or are there ways to get rid of these errors

[hei06j]

I believe PowerModels parser is for version 33, but you can convert v34 to v33 using the package https://github.com/jbarberia/PSSE34to33.

[jbarberia]

I think this would be a great addition to the package, as adapting data coming from newer PSSE formats is quite tedious but easy.
There are not many differences between RAW 33 and RAW 34, the main changes are:

• 12 rates instead of 3 (Rate A, B, and C).
• The node breaker model, which could be represented as buses and switches in PowerModels.

I'm not sure about the best way to structure this addition, but one possibility could be to have separate pti33.jl and pti34.jl files in the io folder for parsing the respective files, or including a conversion step from V34 to V33 to allow code reuse.

@ccoffrin How do you think the best implementation of a parser for RAW 34 could be? How could it be integrated with what was discussed in #894?