How to get the risk index of city grid
Cong Li · Power System Protection and Control · 2010
According to outage model of components and systems,the Monte Carlo sampling method is used to get the probability of occurrence of system fault. T he impact of all the fault of urban grid is quantified by form method or entropy method. T he probability of system failure occurrence and impact are considered comprehensively to get the value of the risk. T he form of risk indicators and the reliability indicators are showed intuitively by chart.According to the results of form, the risk value of each node and the main causes of risk are showed ,a nd targeted recommendations for improvement are proposed. I n the process of seeking risk indicators, if a lot of cases need to be considered entropy weight method can be used, otherwise form method is enough.