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Journal of Applied Mathematics
Volume 2014, Article ID 790736, 6 pages
Research Article

Research on Distribution Network Security Analysis Based on Criterion and Rank Preference Optimal Ordering

State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Changping District, Beijing 102206, China

Received 23 January 2014; Revised 6 May 2014; Accepted 12 May 2014; Published 25 May 2014

Academic Editor: Hongjie Jia

Copyright © 2014 Wang Zengping et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The objective of security analysis is to find the weak link of distribution network. The criterion based on the characteristics of distribution network was proposed for distribution network security analysis. According to the criterion, the electrical devices in the contingency set can be classified into two kinds. The first kind meets the requirement of the criterion. The rank preference optimal ordering (RPOO) was proposed to evaluate the damage degree of power system. The second kind does not meet the requirement of the criterion, and it is the weak link of distribution network. A numerical experiment shows that the method is efficient and feasible, and the proposed method can provide assistant decision-making for safety precautions.