结合近海浅水环境下水深变化明显及动态缆抗载荷能力需求,提出一种漂浮式光伏汇集动态缆线型设计方法,基于悬链线方程建立缓波式动态缆线型模型,结合Orcaflex软件构建有限元模型设计动态缆线型初步方案,考虑浮体偏移情况,在满足约束条件下以缆长最短为优化目标,采用改进模拟退火算法对线型初步方案进行优化寻找全局最优解。结合某海域实际工程数据分析,分析在动态缆定长时首端连接角度对线型的影响,并利用Orcaflex软件验证优化后动态缆线型方案的可靠性与所提方法的可行性。
Abstract
The development of new energy sources, such as oceanic wind power and photovoltaic system, has led to an increasing demand for dynamic sea cables. For the shallow water environment with large tidal range, it is prone to excessive bending,seabed interference, floating body interference and other phenomena, and it is easy to occur tension failure at the remote location. Combining the obvious water depth variation in the nearshore shallow water environment and the load capacity requirements of dynamic cables, a design method for floating photovoltaic pooling dynamic cable type is proposed, based on the suspension chain line equation to establish a slow wave dynamic cable line model. Combining with Orcaflex software to build a finite element model to design the dynamic cable preliminary scheme, considering the float offset, under the constraints to meet the shortest length of the cable as the optimization objective, using an improved simulated annealing algorithm to find the full tidal range of the cable, the preliminary scheme of the cable is optimized using a modified simulated annealing algorithm to find the global optimal solution. Combining with the analysis of actual engineering data in a certain sea area, the influence of the connection angle of the first end on the shape of the dynamic cable are analyzed when the cable length is fixed. The reliability of the optimized dynamic cable shape scheme and the feasibility of the method in this paper are verified using software.
关键词
漂浮式光伏 /
动态缆 /
悬链线理论 /
缓波式线型 /
模拟退火算法 /
曲率半径
Key words
floating photovoltaics /
dynamic cable /
catenary theory /
lazy-wave type line shape /
simulated annealing algorithm /
critical current
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基金
国家重点研发计划（2022YFB4200703）
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