Research on Distribution Network Security Analysis Based onK(N-1+k)Criterion and Rank Preference Optimal Ordering

摘要

The objective of security analysis is to find the weak link of distribution network. TheK(N-1+k)criterion based on the characteristics of distribution network was proposed for distribution network security analysis. According to theK(N-1+k)criterion, the electrical devices in the contingency set can be classified into two kinds. The first kind meets the requirement of theK(N-1+k)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 theK(N-1+k)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.