  Publicly available grid datasets with electric steady-state equivalent
circuit models are crucial for the development and comparison of a variety of
power system simulation tools and algorithms. Such algorithms are essential to
analyze and improve the integration of distributed energy resources (DERs) in
electrical power systems. Increased penetration of DERs, new technologies, and
changing regulatory frameworks require the continuous development of the grid
infrastructure. As a result, the number and versatility of grid datasets, which
are required in power system research, increases. Furthermore, the used grids
are created by different methods and intentions. This paper gives orientation
within these developments: First, a concise overview of well-known, publicly
available grid datasets is provided. Second, background information on the
compilation of the grid datasets, including different methods, intentions and
data origins, is reviewed and characterized. Third, common terms to describe
electric steady-state distribution grids, such as representative grid or
benchmark grid, are assembled and reviewed. Recommendations for the use of
these grid terms are made.
