Calculations > Failure analysis

This function analyses the recovery of the delivery of electricity after failures in the network. Requirements concern load of cables, lines and transformers in the new situation after switching. The number of switching actions for protecting, isolating and recovery will be reported. Also the largest cable load and the lowest voltage will be reported. Problems will be reported specifically.

Before the analysis can start, the network should meet the following requirements:

•the network should have a correct load flow

•circuit breakers and fuses should be modelled; no protection data necessary

The module simulates faults on nodes and in branches. The module analyses the events of failing and restoration the delivery of energy. Attention is paid to load, current and voltage.

During the events up to six switching actions for rerouting the electric current will be performed. For the rerouting actions five types of switching points have been defined:

•switch-in points: open switch in a branch between a faulted and a live network part

•coupling points: open switch in a branch in the faulted network part

•splitting points: closed switch in a branch in the live network part

•branching point: open switch in a branch in the live network, at a short distance from a switch-in point.

•junction point: closed switch in a branch in the live network, at a short distance from a switch-in point.