Life Estimation Correction Model for Offshore Wind Power Transformer Based on Fault Tree Theory

The occurrence of fault would greatly affect the remaining life of offshore wind power transformer. In this paper, the fault events during the operation of the offshore power transformer were analyzed based on the fault tree theory and the structure function of the transformer fault event was established with considering the operation environment to propose the risk model of transformer fault events. The Monte Carlo method was used to sample the risk model, and the fault risk coefficient of the operation for the offshore transformer was obtained. Taking the influence of fault events into the remaining life of the transformer, a Life estimation correction model for offshore wind power transformer was established, which provides guidance for the optimal design and early fault warning of offshore transformers.