Table 5 Comparative analysis of the proposed methodology with conventional distance relay during various power system disturbances in IEEE-14 bus system
From: An adaptive supervised wide-area backup protection scheme for transmission lines protection
Power System Disturbances | Case studies | The action taken by the proposed scheme is | The action taken by the conventional distance protection is | |||
|---|---|---|---|---|---|---|
Correct (Y/N) | Desirable (Y/N) | Correct (Y/N) | Desirable (Y/N) | |||
Fault conditions | LG (70Ω, 1440 and 200 km in branch 13–12 from BUS-13) | Y | Y | N | N | |
LL (50Ω, 1800 and 0 km in branch 4–7 from BUS-7) | Y | Y | N | N | ||
LLG (15Ω, 540 and 70 km in branch 1–2 from BUS-2) | Y | Y | Y | Y | ||
LLL (60Ω, 00 and 65 km in branch 9–10 from BUS-9) | Y | Y | N | N | ||
Contingency conditions | Power Swing(at BUS-6) | without fault | Y | Y | N | N |
with fault | Y | Y | Y | Y | ||
Load encroachment (at BUS-3) | without fault | Y | Y | N | N | |
with fault | Y | Y | Y | Y | ||
Unbalanced loading (at BUS-12) | Y | Y | N | N | ||