Hello,
I am Khairul Alam .I want to know about Bentley substation .what is Bentley substation V8i ,how to I use this software and download.I want to design a substation.
You can follow the steps of the Wiki, How to Download the Bentley Substation Software
You will also need SQL Server. For trying out Bentley Substation, I suggest installing SQL Server by clicking the Install SQL Express 2014 button on the main installation dialog and finishing that installation before running Bentley Substation.