Critical System Cascading Collapse Assessment for Determining the Sensitive Transmission Lines and Severity of Total Loading Conditions

Table 1

Estimated average probability of cascading collapse 𝜇(𝑃_𝐶𝑖) of each initial line tripping due to the effect of hidden failure for IEEE-RTS79.

𝑝HF=1×10^−12		𝑝HF=8×10^−7		𝑝HF=1×10^−2
Initial line tripping	𝜇(𝑃𝐶𝑖); (per unit)	Initial line tripping	𝜇(𝑃𝐶𝑖); (per unit)	Initial line tripping	𝜇(𝑃𝐶𝑖); (per unit)
12-13	0.35740	12-13	0.35579	12-13	0.24756
14–16	0.22384	14–16	0.23058	14–16	0.16518
12–23	0.19249	12–23	0.19084	12–23	0.14123
1–5	0.13625	3–9	0.18691	1–5	0.13625
3–9	0.13611	2–4	0.18120	3–9	0.13611
2–4	0.13417	1–5	0.17969	2–4	0.13417
18–21	0.13296	17–22	0.17913	18–21	0.13296
17–22	0.13277	18–21	0.17856	17–22	0.13277