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I am trying to perform dynamic simulation for an IEEE 9 bus system. After I created and loaded the '.out' file and tried to initialize it, the output bar shows "INITIAL CONDITION SUSPECT", instead of initial conditions O.K. Could anyone help me understand how to resolve it .
In a perfect world, "initial conditions O.K." is good. In a 9 bus test system you should have perfect models since the system is small to be perturbed by dynamic model errors. But simulation models are not perfect, especially when you are working on large systems. Some "INITIAL CONDITION SUSPECT" can be ignored or accepted if Dstate is about 0.0001. For North American base cases, gas turbine models would have some large "INITIAL CONDITION SUSPECT" Dstate but are ignored by planners and operators since these models are acknowledged to have errors in modeling.
When calling the activity STRT: The "INITIAL CONDITION SUSPECT" is a data block that shows a 'table' of model STATE variables that did not initialize close to zero. When STATE variables initialize well, their evaluated derivative value is a very small value close to zero, resulting in the "initial conditions O.K." print out. The table is useful to id those models for which parameter tuning are needed. A common entry in the "INITIAL CONDITION SUSPECT" table are governor models (IEESGO, etc.) with ratio power output/power max over the current fraction specified in the model.
Asked: Jan 11 '14
Seen: 4,099 times
Last updated: Jan 17 '14
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