Internal data model
Powsybl’s internal data model describes electrical networks via a network core model which represents the network equipments and its main attributes and network extensions which can specify equipments’ particular attributes for custom use cases.
The Network core modeling is made of two main objects: substations and lines. A substation can have several voltage levels and a line can be of several types:
Tie line to model a AC line segment shared between two countries;
A Substation can be made of several voltage levels, which are connected through transformers:
The following image shows some elements of the internal data model:
IIDM format and its serialization/deserialization have several versions.
This page documents the latest IIDM version, available on latest
For more information on prior versions,
powsybl-core’s wiki page lists
all the format’s evolutions for each version.
As explained above, network extensions can describe electrical equipments’ attributes which are only useful for some specific use cases (e.g. dynamic simulation, UCTE networks merging, etc.). The following extensions are provided by Powsybl framework:
However, it is also possible to create you own custom network extension for your need.