Vulnerability assessment based on power flow entropy for lines in cascading failures and its application in Sichuan backbone power grid

被引：4

作者：

机构：

[1] Provincial-Level Key Laboratory of Smart Grid, School of Electrical Engineering and Information, Sichuan University

[2] Sichuan Electric Power Company

来源：

Li, Y. (liyong19860306@163.com) | 1600年 / Electric Power Automation Equipment Press卷 / 33期

关键词：

Cascading failures; Distribution entropy of power flow; Electric power systems; Models; Transfer entropy of power flow; Vulnerability;

D O I：

10.3969/j.issn.1006-6047.2013.10.007

中图分类号：

学科分类号：

摘要：

Based on the entropy theory and combined with the characteristics of power flow transfer and distribution of transmission lines, the concepts of transfer entropy and distribution entropy of transmission line power flow are proposed. According to the transfer characteristics of power grid weak links in different operating conditions and the change characteristics of power flow entropy under the disturbances of overload and line break, a vulnerability assessment model based on power flow entropy is proposed for transmission lines with the consideration of real time operational risk of power grid. The simulative results of IEEE 30-bus system show the reliability and comprehensiveness of the proposed method. Its application in Sichuan backbone power grid during high and low flow periods show that, the line with higher power distribution entropy and smaller power flow transfer entropy has bigger overload vulnerability; the line with heavier power flow load, higher operational fault rate and smaller power flow transfer entropy has bigger line break vulnerability; the vulnerable links of high flow period are different to those of low flow period, and the comprehensive vulnerable lines based on power flow entropy is consistent with the actual weak links of power grid.

引用

页码：40 / 46

页数：6

共 20 条

[1]

Andersson G., Donalek P., Farmer R., Et al., Causes of the 2003 major grid blackouts in north American and Europe. and recommended means to improve system dynamic performance, IEEE Transactions on Power Systems, 20, 4, pp. 1922-1928, (2005)

[2]

Albert R., Albert I., Nakarado G.L., Structure vulnerability of the North American power grid, Physics Review E, 69, (2004)

[3]

Zhan Y., Cheng H., Xiong H., Review of cascading failures in electric power network, Electric Power Automation Equipment, 25, 9, pp. 93-98, (2005)

[4]

Cao Y., Wang G., Research on power system complexity and related topics, Electric Power Automation Equipment, 30, 2, pp. 21-26, (2010)

[5]

Gu X., Zhang S., Liang H., Et al., Risk assessment of power grid cascading failure considering system operation conditions, Automation of Electric Power Systems, 38, 24, pp. 124-130, (2010)

[6]

Zhang G., Zhang J., Yang J., Et al., Vulnerability assessment of bulk power grid based on weighted directional graph and complex network theoryt, Electric Power Automation Equipment, 29, 4, pp. 21-26, (2009)

[7]

Cao Y., Chen X., Sun K., Identification of vulnerable lines in power grid based on complex network theoryt, Electric Power Automation Equipment, 26, 12, pp. 1-5, (2006)

[8]

Liu Y., Gu X., Skeleton-network reconfiguration based on topological characteristics of scale-free networks and discrete particle swarm optimization, IEEE Transactions on Power Systems, 22, 3, pp. 1267-1274, (2007)

[9]

Xu L., Wang X., Wang X., Electric betweenness and its application in vulnerable line identification in power grid, Proceedings of the CSEE, 30, 1, pp. 33-39, (2010)

[10]

Wang A., Luo Y., Tu G., Et al., Online transmission vulnerability assessment method based on the fault chain risk index, Proceedings of the CSEE, 30, 25, pp. 44-50, (2010)

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