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Reliability Evaluation of Flood Releasing Structures Power Supply of Hydroelectric Power Station by Fault Tree Analysis

A new approach based on fault tree analysis to evaluate the overall reliability of flood releasing structures power supply system of hydroelectric power station is presented. This paper introduces the fault tree modelling and evaluation methods, and taking one hydroelectric power station in East China for example, a detailed fault tree model for flood releasing structures power supply system is established. Finally, the reliability of power supply system is assessed and the main contributors to reliability of power supply system have been identified, both qualitatively and quantitatively.