Vulnerability Analysis of Bus Failure in Power Grid

Abstract

a Abstract—This paper analyzes the network features of power grid with buses' cascading failures based on the theories and methods of complex networks. And it concludes detailed vulnerability analysis of buses in Huazhong power grid under three forms of attacks (maximum load attack, maximum degree attack and random attack) .It provides technical means for the prevention of cascading failure . Keywords-complex network; power grid; cascading failure of bus; power grid vulnerability Power system faults take severe harm to the normal operation of society. The studies of power grid's vulnerability focus on the structure of power grid itself and the accumulation of risk energy caused by different kinds of outside interferences. Risk energy can spread in a power grid or between different ones, which makes energy accumulate and develop risks. When the disturbed energy is large enough, it will spread energy along the slits in the grid whose damping is the least. This kind of spread does so much damage that it may ravage the power grid in some cases. In China and abroad, studies of vulnerability concentrate on the field of complex system. Haimes