The uncertainty of complex power systems increases the possibility of large blackouts due\nto the expectations of physical events, such as equipment failures, protection failures, control actions\nfailure, operator error, and cyber-attacks. Cascading outage is a sequence of dependent failures\nof individual components that successively weaken the power system. A procedure to identify\nand evaluate the initiating events and perform sequential cascading analysis is needed. In this\npaper, we propose a new screening methodology based on sequential contingency simulation of\ncascading outages, including probabilistic analysis and visualization model. Performance of a detail\ncascading analysis using practical power systems is suggested and discussed. The proposed screening\nmethodology will play a key role in identifying the uncontrolled successive loss of system elements.
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