A TOPSIS-Based Vulnerability Assessment Method of Distribution Network Considering Network Topology and Operation Status

Vulnerability assessment is one of the effective ways to prevent cascading failures a distribution network (DN). Aiming accurately identify vulnerable parts DN, comprehensive method based on Technique for Order Preference by Similarity Ideal Solution (TOPSIS) considering topological structure and operation status proposed. Considering radial topology structural vulnerability indices complex theory are extended, such as degree efficiency. According system power flow topology, state established, electrical betweenness transfer entropy. Combining Analytic Hierarchy Process (AHP) entropy weight obtain give each index. The weighted substituted into TOPSIS calculate node line in DN where obtained results corrected grey correlation degree. transmission efficiency index established describe performance degradation under different attack strategies. simulation IEEE 33-bus test case show that proposed can effectively nodes lines DN.