Editing Network theory (section)

=== Electric network analysis ===
The analysis of electric power systems could be conducted using network theory from two main points of view:
# An abstract perspective (i.e., as a graph consists from nodes and edges), regardless of the electric power aspects (e.g., transmission line impedances). Most of these studies focus only on the abstract structure of the power grid using node degree distribution and betweenness distribution, which introduces substantial insight regarding the vulnerability assessment of the grid. Through these types of studies, the category of the grid structure could be identified from the complex network perspective (e.g., single-scale, scale-free). This classification might help the electric power system engineers in the planning stage or while upgrading the infrastructure (e.g., add a new transmission line) to maintain a proper redundancy level in the transmission system.<ref name="10.3390/en11061381"/>
# Weighted graphs that blend an abstract understanding of complex network theories and electric power systems properties.<ref name="ieeexplore_8191215"/>