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I have heard the term Node in the Power Grid or Smart Grid, what does this node compose of? Is it a group of houses connected to the same substation?

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    \$\begingroup\$ The literal meaning of "node" is "knot" so, where wires are tied together. Or, junctions. \$\endgroup\$
    – user16324
    Sep 9, 2020 at 11:48

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"Node" (or: vertex) really is just a term from graph theory and describes any point in a graph where two edges connect.

Whether that is a single device, power outlet, house, a substation, a nuclear power plant or a national exchange where GWh are auctioned depends on the context. You'll need to really look into the details of each publication – "power grid" or "smart grid" doesn't define that.

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A node is essentially a junction box provided to different regions of the state. It allows for more expansion from power grids to various houses in the region. A simple definition of a node is where two or more wires meet.

Some Nodes have smart systems that makes sure there is regulation in supplying mains voltage. Hope this helped.

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A node in power transmission can be a power plant, substation, tap, or Junction. Taps & junctions are essentially where the power line splits in many directions and usually done on the power pole.

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