Comprehensive weight method based on game theory for identify critical transmission lines in power system

摘要

Identify critical transmission lines is significant for power system to prevent large-scale blackouts. To address this concern, based on topological structure and power flow distribution, a topological model is constructed to simply the power system. Subsequently, three indexes are derived to assess the importance of transmission line from three different aspects: global topological structure, line operation parameters and local line connection. Furthermore, in order to assess the line importance more comprehensively, the three indexes are integrated to a line comprehensive index by adopting comprehensive weight method based on game theory. Simulation results show that the method can identify the critical transmission lines in power system, and verify the correctness and effectiveness though network transmission efficiency.