Fuzzy Fault Tree Analysis Model for Grid Operation Risk Warning Evaluation
Based on the fuzzy fault tree analysis method,a grid operation risk warning evaluation system is proposed.By dividing the grid operation into four systems (grid structure,grid operation,equipment transportation and inspection and safety management),this paper comprehensively considers the influence of every system on grid operation risks.Firstly,take the situation where abnormal fluctuation occurs for indicators of each system as a failure event,establish the fuzzy fault tree corresponding to the warning evaluation system,determine the importance degree of each indicator to grid operation risk by using the fuzzy math theory.Secondly,replace the method of expertise method to get evaluating weight,and take the importance degree as the weight of evaluation indicator.Thereupon,combine with the actual measurement to comprehensively evaluate the grid operation risk.Finally,use the radar chart to determine the risk disturbance source to accurately position the risk indicators which need to be controlled.This research can provide a highly efficient warning evaluation method and evaluation process.
NETL
NSTL
万方数据
维普
