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A fast evaluation method for static voltage stability margin after transmission line switching considering variable step size

Published: 31 July 2024 Publication History

Abstract

Aiming at the static voltage stability problem of the system after transmission line switching, a fast method for obtaining saddle node bifurcation points with variable step sizes is proposed in this paper. The sensitivity method is adopted to ensure that the step size can be self-adjusted with the change of slope at the operating point; the dichotomy method is incorporated into the step size adjustment algorithm to deal with the situation that the predicted operating point i+1 is separated from the upper half of the P-V curve; and the local curve fitting technology is used to improve the accuracy of the solution. The simulation results based on the IEEE 39 bus systems show the effectiveness of the proposed method. Comparisons with the results of the continuous power flow method show that the proposed method has the advantages of computational efficiency and accuracy, and has the potential to be applied to large power grids online.

References

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K. W. Hedman, S. S. Oren and R. P. O'Neill. 2011. A review of transmission switching and network topology optimization. 2011 IEEE Power and Energy Society General Meeting, Detroit, MI, USA, pp. 1-7.
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A. N. Yadav and K. Pal. 2011. Stability Margin Analysis using Continuous Power Flow Method. 2021 International Conference on Advance Computing and Innovative Technologies in Engineering (ICACITE), Greater Noida, India, pp. 207-211.
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    PEAI '24: Proceedings of the 2024 International Conference on Power Electronics and Artificial Intelligence
    January 2024
    969 pages
    ISBN:9798400716638
    DOI:10.1145/3674225
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    Published: 31 July 2024

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