电力系统自动化2012，Vol.36Issue(19)：11-16,6.
基于潮流熵的电网连锁故障传播元件的脆弱性评估
Vulnerability Assessment in Power Grid Cascading Failures Based on Entropy of Power Flow
摘要
Abstract
To study the mechanism of cascading failures in a power grid and find out the key vulnerable components propagating cascading failures,based on the basic principle of entropy and the distribution of power flow due to overload and removal of components,the components vulnerability assessment method of power flow entropy is proposed.Simulation results on the IEEE 39-bus system indicate that the smaller the distribution entropy of power flow is,the more vulnerable the node is.It also shows that the smaller the transfer entropy of power flow and the larger the impact by power flow of 'generator-load' nodes is,the more vulnerable the branch is.The vulnerable components play a key role in the propagation of cascading failures.Compared with vulnerable components evaluation results obtained by methods based on betweenness and risks,the vulnerability assessment model of power flow entropy has a clearer physical meaning,faster calculation,and is more realistic.关键词
连锁故障/潮流分布熵/潮流转移熵/脆弱性评估/电力系统Key words
cascading failures/distribution entropy of power flow/transfer entropy of power flow/vulnerability assessment/power systems分类
信息技术与安全科学引用本文复制引用
李勇,刘俊勇,刘晓宇,蒋乐,魏震波,胥威汀..基于潮流熵的电网连锁故障传播元件的脆弱性评估[J].电力系统自动化,2012,36(19):11-16,6.基金项目
国家自然科学基金资助项目 （）
