SMIB - PowerWorld
SMIB - PowerWorld
SMIB - PowerWorld
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<strong>SMIB</strong> Eigenvalues Example<br />
• Open Gen_57236_1.pwb<br />
• It has two buses, the slack bus which is also the infinite bus, and bus<br />
57236 with attached generator models<br />
• Running the analysis for 500 seconds with no event does not cause<br />
numerical instability like in the earlier example<br />
• More analysis is needed to determine what is causing the positive<br />
eigenvalues<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
50<br />
100<br />
150<br />
200<br />
Gen_57236_1, stabilizer states<br />
250<br />
300<br />
350<br />
400<br />
450<br />
500<br />
The stabilizer is the<br />
only model with<br />
states that are not<br />
completely flat, as<br />
they should be in<br />
steady-state<br />
4.6<br />
4.4<br />
4.2<br />
4<br />
3.8<br />
3.6<br />
3.4<br />
3.2<br />
3<br />
2.8<br />
2.6<br />
2.4<br />
2.2<br />
2<br />
1.8<br />
1.6<br />
1.4<br />
1.2<br />
1<br />
0.8<br />
0.6<br />
0.4<br />
0.2<br />
0<br />
0<br />
500<br />
Gen_57236_1, all other states<br />
50<br />
100<br />
150<br />
200<br />
250<br />
300<br />
350<br />
400<br />
450<br />
T11: <strong>SMIB</strong> Training<br />
© 2012 <strong>PowerWorld</strong> Corporation<br />
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