电网技术2016，Vol.40Issue(1)：193-198,6.DOI:10.13335/j.1000-3673.pst.2016.01.026
基于有功潮流介数的电网关键线路辨识
Identification of Critical Lines in Power Grid Based on Active Power Flow Betweenness
摘要
Abstract
It is an important part for the power system operation risk control to identify the critical lines.To improve the recognition accuracy,the indicator of active power flow betweenness is proposed in the model.The actual distribution of the power flow and the capacity of each transmission line are involved in the model which is more comprehensible to the physical backgrounds of power system.At the same time,check the effectiveness of the identification result by the changes of system transmission efficiency proposed in the article with the cascading failure of the critical lines.The rapid development of DG changes the active power flow of the power grid.The impact of DG on the identification of the critical lines is also analyzed in the model.The experiment on IEEE-39 bus system shows that a few high active power flow betweenness lines play a vital role in the power transmission grid.Continuous attacks against these lines lead to a sharp decline in the level of the system transmission.Thus,it is effective to identify the critical lines in power grid by using the active power flow betweenness.The example of IEEE-39 system with the DG shows that the local energy supply-demand relationships can be improved,the importance of related link lines become weakened and the identification result of the critical lines changes in different system operation modes.关键词
关键线路辨识/有功潮流介数/连锁故障/系统输电效率Key words
critical line identification/active power flow betweenness/cascading failures/system transmission efficiency分类
信息技术与安全科学引用本文复制引用
张涛,孙晓伟,徐雪琴,李振兴..基于有功潮流介数的电网关键线路辨识[J].电网技术,2016,40(1):193-198,6.基金项目
国家自然科学基金项目(51307097).Project Supported by National Natural Science Foundation of China (51307097). （51307097）
