Table 3.
Characteristics of the Norwegian 2012 and 2030 high-voltage power grid models. True groundings refer to nodes with a finite earthing resistance. Average node resistance is related to true groundings and contains the transformer and earthing resistances. The average line resistance refers to all lines, also within autotransformer stations. As usual, these values correspond to the single conductor description. Lines inside stations refer to short conductor sections related to autotransformers.
| 2012 | 2030 | |
|---|---|---|
| Nodes | 162 | 205 |
| True grounding | 134 | 151 |
| Transmission lines | 174 | 197 |
| Lines inside stations | 27 | 65 |
| Average line length [km] | 40.9 | 42.9 |
| Average node resistance [ohm] | 0.61 | 0.59 |
| Average line resistance [ohm] | 0.41 | 0.35 |
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