A power grid with multiple voltage levels can be modelled using a multilayer network. A graph in each layer represents all the cables in the same voltage level. A directed bipartite for a pair of adjacent layers represents transformers connecting two voltage levels.
There are two kinds of edges in multilayer network. Any intra-edge can only exist in a single layer, and correspond to cables. Inter-edges connect layers, and correspond to transformers.
There are more features when modelling power grid as multilayer network:
At least one inter-edge connecting upper layer for a component
No pair of planar nodes share the same name.
Inter-edges exist between adjacent layers, and direct towards lower layers.
There is geographical information associated with intra-edges, but not with inter-edges.
All the inter-edges represent transformers.
Terminals of any inter-edges are unique. Put another way, there is no pair of inter-edges sharing a terminal.
A power grid with multiple voltage levels can be modelled using a multilayer network. A graph in each layer represents all the cables in the same voltage level. A directed bipartite for a pair of adjacent layers represents transformers connecting two voltage levels.
There are two kinds of edges in multilayer network. Any intra-edge can only exist in a single layer, and correspond to cables. Inter-edges connect layers, and correspond to transformers.
There are more features when modelling power grid as multilayer network: