Research on Transformer Risk Assessment Model Considering Offshore Petroleum and Gas Environment

Transformer is one of the key equipment in the power system platform, and its operation status is directly related to the system operation status. In order to ensure the reliable and stable operation of the transformer, it is necessary to develop a condition-based maintenance plan for it. Therefore, it is of great significance to carry out effective risk assessment and formulate corresponding maintenance strategies according to the assessment results. Divide risk probability into failure rate and risk consequence, build failure rate model based on state assessment, aging, weather and system coupling, and quantify risk from maintenance, power grid, human and environment. Establish risk assessment model for transformer. Finally, the feasibility and effectiveness of the model is verified by the risk assessment of a transformer on an offshore platform. The model can reflect the operation status of transformer more comprehensively.