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

Abstract EN

The objective of security analysis is to find the weak link of distribution network.

The K(N-1+k) criterion based on the characteristics of distribution network was proposed for distribution network security analysis.

According to the K(N-1+k) criterion, the electrical devices in the contingency set can be classified into two kinds.

The first kind meets the requirement of the K(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 the K(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.