A Security Risk Assessment System of Complicated Power Grid Based on Multiple Factor Analysis
Qingqian Chen · Power System Technology · 2011
Based on multiple factor analysis of large area blackout accidents and by use of fault tree analysis and analytic hierarchy process(AHP),a security risk assessment system,which is objective,practicable and applicable for complicated power grid,is established.This assessment system can fully bring government departments' management advantages in overall planning,coordination and organization of social resources as well as technical superiority of electric power enterprises in secure and stable operation of power grids into play,thereby the security risk of power grids can be all-sidedly reduced to prevent the occurrence of large area blackout accidents.Practical assessment of a certain provincial power grid in China is performed by this assessment system,and the risk level of large area blackout of this power grid is obtained.The feasibility of the proposed risk assessment method and that of its assessment indices are verified by assessment results.