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发表于 2011-11-12 16:54:33
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Verify Initial Conditions
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If the initial conditions can be fulfilled, the power system will be in a steady-state condition. When the Verify Initial Conditions options is enabled, then the condition dx/dt=0 is checked for all state variables. If one or more of the state variable derivatives does not equal zero, the power system may start 'moving' from the very beginning of the simulation, even without the application of an external event. In this case the user should analyse the relevant controller or model and its defined initial conditions carefully. 7 x: o1 _& f/ {- o( Q; Q
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All warnings or error messages issued in the output window should be checked carefully. Typical problems are devices which are overloaded or operate above or below signal limitation from the beginning of the simulation. 7 R% }% ?" c5 J1 n$ r# |/ j
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The error message displayed in the output window might look as follows:
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' G( ~8 g u& ]6 E) TDIgSI/err - Some models could not be initialized. , U/ ?; \5 B0 u
DIgSI/err - Please check the following models: & e7 m* _) P" B+ m: e5 `. }# N2 |
DIgSI/err - 'Simple Grid\AVR Common Model.ElmDsl': 1 p; d4 e) g7 e3 o2 C9 i/ b
DIgSI/err - Initial conditions not valid ! |
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