Research on Prevention of Cascading Failures Based on Time of Vegetation-Related Failure

Long Yue Zhang; Xian Yong Xian

doi:10.4028/www.scientific.net/AMM.321-324.1392

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 321-324Research on Prevention of Cascading Failures Based...

Research on Prevention of Cascading Failures Based on Time of Vegetation-Related Failure

Abstract:

The necessity of research on the vegetation-related failure and its inherent hidden timescale in the cascading failures is attached importance based on the facts of recent blackouts internationally. The dynamic behavior of line sag and the vegetation growth are modeled. The time of vegetation related failure after step increase of the line current due to other disconnect events is calculated considering specified physical circumstances, and it can help operators be aware of the necessary urgency of system crisis. Case studies are made on WSCC-9 and IEEE-24 test system respectively, and the results show the method proposed is able to identify collapse sequences due to vegetation-related failures and corresponding timescales, and make great contribution to the prediction and prevention of cascading failures.

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Periodical:

Applied Mechanics and Materials (Volumes 321-324)

Pages:

1392-1395

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.321-324.1392

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Online since:

June 2013

Authors:

Long Yue Zhang, Xian Yong Xian

Keywords:

Cascading Failure, Line Sag, Power System, Timescale, Vegetation-Related Failure

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