| As the power transmission and information communication hub of the entire offshore wind farm, the safe operation of the offshore substation is of vital importance. In the current design process of offshore substations, in order to ensure the safety of the substation in the complex marine environment, there is often a large margin of safety resulting in an increase in construction costs, which significantly reducing the economic benefits of the project. Therefore, in this paper, for an offshore substation, the lightweight design study of the conduit frame structure is carried out based on the in-situation analysis under extreme loading conditions. First of all, considering the dual principles of structural safety and lightweight effect, the SACS software was used to conduct a sensitivity analysis of the weight reduction effect of all the member groups of the substation conduit frame, select the member groups that have a greater impact on structural weight and a smaller impact on safety, and propose three lightweight design solutions. Second, a Python-SACS cyclic optimization method for offshore substation structures is proposed, based on the Python programming language to invoke the SACS software for cyclic iterative calculations to optimize different lightweight design solutions to obtain the best solution. Finally, for the lightweight design scheme, the five working conditions of in-situation analysis, lifting analysis, bottom stability analysis, leaning ship collision analysis and fatigue analysis are verified, and the optimized design scheme of the conduit frame structure of the offshore substation is proved to have good safety and feasibility. |
