May I ask why I can't insert object in bentley substation and I cant also view the object? I created a new part database and loaded successfully.
Please see the Parts missing from Insert Substation Objects article and let us know if that answers your question.
You can also try to Restore the Platform Defaults.Wiki Link for This as below :- https://communities.bentley.com/products/electrical___instrumentation/w/electrical_and_instrumentation__wiki/7573/restore-platform-defaults-substation.