From a useful look at past conventions by Eric Boehlert:
Many in the press have portrayed Clinton’s planned convention address, as well as the fact that her name is being placed into nomination, as an unprecedented, heavy-handed power grab.
Fact: It’s not. In years past, Democratic candidates who won lots of primaries and accumulated hundreds of delegates (sorry, Howard Dean and Bill Bradley) have always been allowed to address the convention and very often place their name into nomination. It’s the norm. It’s expected. It’s a formality.