Research On The Spreading Mechanism And Searching Model Of Cascading Failures

The interconnection of power grid has improved its economy, but meanwhile the safety and reliability of power system operation have faced challenges continuously as large-scale blackouts took place in the world. Based on the characteristics of small-world network, the spreading mechanism of cascading failures in power grid was studied in this paper. The results of the experiments show that the appearance of long-range connectivity has increased the breadth and depth of spreading, so that it pushes forward the spreading of cascading failures. A real-time searching system for cascading failures using the priority module is set up to find the source of the failures quickly and efficiently from massive real-time data of WAMS. The correctness and effectiveness of the proposed method are validated using the Northwest Power Grid of China an example.