Identification of Power System Brittle Risk Sources Based on DC Current and Distribution Factor

The occurrence of cascading failure in electric power system due to the brittle sources of the system was excited by the brittleness theory, so how to find the brittle source of the system is the key to avoid the brittle risk occurring. This text forwards the method of the brittle source identification based on the combination of DC flow and distribution factor and proves its effectiveness and practicality through the IEEE-5 node system.