Hi Mr. Alves, probably you will think about contacting the RWTH Aachen University. Especially the Institute for Energy Efficient Buildings and Indoor Climate.
A list of their current projects:
As you can see, they develop several software tools for their research. Additionally they follow the open source idea => https://www.ebc.eonerc.rwth-aachen.de/cms/E-ON-ERC-EBC/Forschung/~modg/OPEN-SOURCE/lidx/1/
Because building automatization is a big theme in that institute, PLC programming must be of their interest. Additionally, I found out, that they are going to migrate the OSCAT Library to Github:
I strongly assume, that there is an interest in open source PLC stuff. Due to the fact, that your project is the only full comprehensive open source project in this category they should be interest in OpenPLC.