Area-Based COI-Referred Rotor Angle Index for Transient Stability Assessment and Control of Power Systems

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="410461.fig.005a" src="https://static.hindawi.com/articles/aaa/volume-2012/410461/figures/410461.fig.005a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Area 1</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="410461.fig.005b" src="https://static.hindawi.com/articles/aaa/volume-2012/410461/figures/410461.fig.005b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Area 2</td></tr></table></td></tr><tr class="fig-image" id="c"><td><img alt="410461.fig.005c" src="https://static.hindawi.com/articles/aaa/volume-2012/410461/figures/410461.fig.005c.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(c) </b>Area 3</td></tr></table></td></tr><tr class="fig-image" id="d"><td><img alt="410461.fig.005d" src="https://static.hindawi.com/articles/aaa/volume-2012/410461/figures/410461.fig.005d.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(d) </b>Area-based COI-referred rotor angles index</td></tr></table></td></tr></table>

<table>Case <a href="https://static.hindawi.com/articles/aaa/volume-2012/410461/figures/#casee3">3</a>: the system becomes unstable due to a fault at Line 9 (Area 2).</table>

Abstract and Applied Analysis

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Figure 5

Figure 5: Area-Based COI-Referred Rotor Angle Index for Transient Stability Assessment and Control of Power Systems 