code value

Figure 2/Figure 3 decode table

Interpretation of Value

0

System is at equilibrium range/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

Eigenvalue at bus is increasing toward dynamic instability/FLAG CRITICAL

30

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 or eigenvalue in range of singularity/FLAG HIGHEST PRIORITY