8. Distributions

8.1 Principles and generalities

Distribution networks establish the link between transmitters and generations. A distribution network does not physically exist for all connected systems. In order to link the description of emitting and generating systems, the calculation method always provides for the presence of a distribution, which may be fictitious or real.

The physical distribution circuits are characterized by their heat losses, power ratings and circulator regulation, distinguishing two levels of tree structure:

• group network (see § 8.2.1