NEPLAN | Network Reduction

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This module is designed to reduce the size of a network model by replacing sets of buses and their connected elements (lines, transformers, etc.) with a smaller but exact, numerically equivalent network. For a properly chosen set of buses, this equivalent network will have fewer buses and branches than the original, yet still provide the correct response to short circuit or load flow calculations in the unreduced portion. The network can be reduced for

  • symmetrical or asymmetrical short circuit calculations according to IEC60909, ANSI/IEEE or superposition method and
  • load flow calculation

The reduced network gives the same short circuit or load flow results as the original network. Giving the nodes to be reduced, the program determines the boundary nodes automatically. The module supports WARD, Extended Ward and REI-DIMO equivalents. There are several options to handle the non-linear elements, like PV-Generators, during the reduction process.

The reduced network will be created as a variant of the original network. In this case both networks could be easily compared.