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		Xiaofeng WENG, Yiguang HONG, Ancheng XUE, Shengwei MEI.[en_title][J].Control Theory and Technology,2006,4(3):235~238.[Copy]

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XiaofengWENG,YiguangHONG,AnchengXUE,ShengweiMEI
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Received:April 19, 2005Revised:April 17, 2006

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Failure analysis on China power grid based on power law

Xiaofeng WENG, Yiguang HONG, Ancheng XUE, Shengwei MEI

(State Key Lab of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China; Institute of Systems Science, Chinese Academy of Sciences, Beijing 100080, China)

Abstract:

This paper is concerned with the mechanism of blackouts in China power system from the viewpoint of self-organized criticality. By using two estimation algorithms of scaled window variance (SWV) and rescaled range-statistics R/S), this paper studies the blackout data in China power system during 1988-1997. The result of analysis shows that the blackout data of 1994-1997 coincides well with the autocorrelation. Furthermore, it is found that the function of blackout probability vs. blackout size exhibits power law distribution.

Key words: Power system Blackout Power law Estimation algorithm