Risk Assessment of Six Indicators in Power System Operation

Based on the theory and methods of power system, this paper combines five kinds of state characteristics of the power system operation and researches hierarchical network model which is suitable to the probabilistic risk assessment .More, with the lack of risk indicators of traditional power system in the operation of risk assessment, giving six reliable indicators including line overload, transformer overload, low voltage, voltage instability of power systems, lost load, cascading failures. In order to improve the accuracy of the operation of risk assessment, this paper proposes risk assessment method use with combination of state-space approach and analytic hierarchy process.