摘要
海上光伏电站是解决光伏开发与土地资源之间矛盾的有效手段,但海上环境条件复杂,极端海况时常发生,这就给海上光伏板的生存带来了巨大挑战。海上光伏板在极端波浪作用下的冲击荷载空间分布及其大小是影响光伏板工作性能及生存安全的关键因素,需要对其进行深入研究。基于OpenFOAM■开源软件包建立了数值模型,对极端海况下海上光伏板的水动力特性进行了数值模拟研究。在对数值模型进行充分验证的基础上,开展了操作海况和极端海况下海上光伏板的水动力特征研究,分析不同波浪条件下光伏板所受波浪冲击荷载的时空分布规律。研究结果表明:操作海况下和极端海况下光伏板的水动力特性有很大不同,操作海况波浪未发生波浪冲击和越浪现象,而极端海况却发生了波浪冲击和越浪;极端海况下光伏板前半段波浪冲击呈现出明显的二次峰值现象,而光伏板后半段波浪冲击却无二次峰值现象;极端海况下波浪冲击压力最大值沿板长呈先增大后减小的趋势,海上光伏板所受波浪荷载在板上方(2/5~3/5)L(L为板长)处波浪冲击荷载最大。该研究成果将为海上光伏板极端海况下的防灾减灾结构设计提供参考,以避免极端荷载作用下光伏板受波浪冲击作用而产生破坏。
Offshore photovoltaic power stations present an effective solution to the conflict between photovoltaic development and land resources.However,the complexity of offshore environment conditions,with the frequent occurrence of extreme sea conditions that poses significant challenges to the survival of offshore photovoltaic panels.The spatial distribution and magnitude of impact loads on offshore photovoltaic panels under extreme wave conditions are critical factors that influence their operational performance and structural safety,necessitating further investigation.This study establishes a numerical model based on the OpenFOAM®open-source software package to simulate the hydrodynamic characteristics of offshore photovoltaic panels under extreme sea conditions.After thorough validation,the model is employed to investigate the hydrodynamic characteristics of photovoltaic panels under both operational and extreme sea conditions,analyzing the spatiotemporal distribution of wave impact loads across varying wave conditions.The findings reveal significant differences in the hydrodynamic characteristics of the photovoltaic panels under operational and extreme sea conditions.While operational sea conditions did not result in wave impact or overtopping,extreme sea conditions led to wave impact and overtopping.Under extreme sea conditions,the wave impact on the front half of the photovoltaic panels exhibited a distinct secondary peak,while no such secondary peak was observed on the rear half of the photovoltaic panel.Furthermore,the maximum impact pressure under extreme sea conditions initially increased and then decreased along the length of the panel,with the highest wave impact loads observed at 2/5 to 3/5 of the panel length L.These findings provide valuable insights for the structural design of disaster prevention and mitigation for offshore photovoltaic panels,aiming to prevent damage from wave impacts under extreme loading conditions.
作者
田正林
邱湘鹏
温鸿杰
TIAN Zhenglin;QIU Xiangpeng;WEN Hongjie(College of Ocean Engineering and Energy,Guangdong Ocean University,Zhanjiang 524088,China;School of Civil Engineering&Transportation,South China University of Technology,Guangzhou 510641,China)
出处
《海洋工程》
北大核心
2025年第1期30-39,共10页
The Ocean Engineering
基金
国家自然科学基金青年项目(52101312)
广东省自然科学基金面上项目(2023A1515012183)
2021年湛江市海洋青年人才创新项目(2021E05006)
广东海洋大学科研启动费资助项目(060302072003)。
关键词
海上光伏板
极端海况
水动力特性
数值水槽
波浪载荷
offshore photovoltaic panels
extreme sea conditions
hydrodynamic characteristics
numerical wave flume
wave loads
