A Method for Assessing Power System Security Risk

All along, countries of the world have adopted different methods to guarantee the operation security of power system. However, there were still a lot of large-area power outages in the world recently, which causing enormous economic losses. It indicates that the existing methods cannot completely guarantee the security of power system, and there is an urgent requirement to find new ways as a supplement. In this paper, an operable method for assessing power system security risk has proposed. Based on the analysis of the cooperation of the government and enterprises, the assessment process is discussed. The assessment indices are given by the Accident Tree Analysis and Analytic Hierarchy Process. Finally, we take Guangdong power grid as an example to briefly describe the practical application of the method.