Transmission
Power system analysis
Transmission engineers and technical analysts occasionally undertake power system analysis.
The datasets to be found here can be helpful with such analysis. In particular, the DIgSILENT Powerfactory case files produced by Transpower are updated at least once per year. The readme file below contains a high-level summary of the changes that appear in each release of the case files.
Line diagrams
28 August 2025
Powerfactory case files
28 August 2025
PSS/E and raw files
28 August 2025