This test case represents a 2220 MVA
synchronous machine connected to an infinite bus through a
transformer and two lines in parallel.
The simulated event is a 0.02
pu step variation on the generator mechanical power Pm occurring at
t = 1 s.
The two following figures show
the expected evolution of the generator's voltage and active power
during the simulation.We observe that the active power is
increased by 44.05 MW. The voltage drop between the infinite bus
and the machine terminal is consequently increased, resulting in a
decrease of the machine terminal voltage.
Initial equation are provided
on the generator's differential variables to ensure a steady state
initialisation by the Modelica tool. It had to be written here and
not directly in
Dynawo.Electrical.Machines.OmegaRef.GeneratorSynchronous because
the Dynawo simulator applies a different initialisation strategy
that does not involve the initial equation section.