Comprehensive risk assessment method of power planning scheme considering natural disasters

In order to hedge the small-probability high-risk events which power system may face against, it is essential to consider the impact of natural disasters in the power system planning stage. First, this paper establishes the component damage probability model under natural disasters. Second, the system risk assessment based on analytical method is discussed, and the indicators and algorithm for rapid line risk identification are proposed to alleviate the computation burden of the analytical method. Finally, a comprehensive risk assessment method considering natural disaster is proposed based on PSD-BPA transient stability program. The case study performed in the actual systems verifies that the proposed indicators and method are accurate and effective.