Identification of the vulnerable sections in power system

Author

Li, Yuanyuan ; Zhao, Jinli ; Jia, Hongjie

Author_Institution

Key Lab. of Smart Grid of Minist. of Educ., Tianjin Univ., Tianjin, China

fYear

2012

fDate

21-24 May 2012

Firstpage

1

Lastpage

6

Abstract

In this paper, a fast method of identifying the vulnerable sections in power system based on the graph theory is proposed. First, several kinds of definition of weights for power grid modeling are discussed and a novel index which can consider the electrical distance and the power flow distribution at the same time is defined. Then, a weighted graph model of the power grid is established based on this index. At last, the problem of identifying a vulnerable section is transformed into a pure graph partitioning problem and a new method based on the normalized cut is proposed. Results on the IEEE-30 test system show the effectiveness of this method.

Keywords

graph theory; load flow; power grids; power system identification; power system interconnection; IEEE-30 test system; electrical distance; graph theory; power flow distribution; power grid modeling; power system identification; vulnerable section; weighted graph model; Indexes; Load flow; Power grids; Power system stability; Stability analysis; Vectors; normalized cut; vulnerable section;

fLanguage

English

Publisher

ieee

Conference_Titel

Innovative Smart Grid Technologies - Asia (ISGT Asia), 2012 IEEE

Conference_Location

Tianjin

Print_ISBN

978-1-4673-1221-9

Type

conf

DOI

10.1109/ISGT-Asia.2012.6303295

Filename

6303295