Code Value

Figure 2 Decode Table

Interpretation of Value

0

System is Fine/No action Necessary

5

Bus Eigenvalue is converging to a new equilibrium point/No action Necessary

10

Slightly Divergent Trends Detected in Eigenvalue/No action unless this pattern continues

15

Eigenvalue is Converging from Unstable Parameters/No action unless divergence occurs or after Event

20

Bus Eigenvalue is Marginally Converging from Unstable Parameters/FLAG

25

DDJEA Eigenvalue at Bus is Increasing toward Dynamic Instability/FLAG CRITICAL

30

DDJEA Eigenvalue is Accelerating Toward Dynamic Instability/FLAG CRITICAL

35

Dynamic and Voltage Instability Parameters Detected/FLAG CRITICAL

40

Approaching Singularity/ System will go unstable soon without solution/FLAG CRITICAL

50

Major System Event/FLAG HIGHEST PRIORITY