Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4945696 | International Journal of Electrical Power & Energy Systems | 2017 | 12 Pages |
Abstract
This work proposes a measurement-based voltage stability index, namely wide-area measurement-based voltage stability sensitivity based on L index. The sensitivities of L index with respect to nodal reactive power (Q) and real power (P) injections are first derived. The derived L-Q and L-P sensitivities analyze the impact of nodal injection to nodal voltage stability and can help determine the reactive power compensation and emergency load shedding amount for voltage stability control. To improve the computational efficiency, a simplified L index, Lâ², along with its sensitivities with respect to nodal reactive and real power injection (Lâ²-Q and Lâ²-P sensitivities) are derived which makes the proposed approach suitable for the practical large-scale systems. Moreover, a control strategy for voltage stability is proposed based on the L-Q, L-P, Lâ²-Q, and Lâ²-P sensitivities. The proposed sensitivities and control strategy are tested on the New England 39 bus system and the IEEE 118 system. Test results on both systems verify the proposed sensitivities and the control strategy by demonstrating their accuracy and robustness in voltage stability assessment and control. In conclusion, the proposed measurement-based sensitivities can be applied to voltage stability assessment and control by using the wide-area measurements.
Related Topics
Physical Sciences and Engineering
Computer Science
Artificial Intelligence
Authors
Houhe Chen, Tao Jiang, Haoyu Yuan, Hongjie Jia, Linquan Bai, Fangxing Li,