电子测量与仪器学报

张安安,何明光,于璐,李茜,赵怡政,魏俊.基于有限元法的海底电缆埋设深度实时预测研究[J].电子测量与仪器学报,2023,37(12):18-28

基于有限元法的海底电缆埋设深度实时预测研究

Real-time prediction of submarine cable embedment depth based on finite element method

DOI：

英文关键词:three core submarine cable finite element method core temperature embedment depth real-time prediction

基金项目:西南石油大学自然科学“揭榜挂帅”项目(2021JBGS06)、西南石油大学科研“启航计划”项目(2021QHZ006)资助

作者	单位
张安安	1. 西南石油大学电气信息学院
何明光	1. 西南石油大学电气信息学院
于璐	2. 中海油研究总院有限责任公司
李茜	1. 西南石油大学电气信息学院
赵怡政	1. 西南石油大学电气信息学院
魏俊	1. 西南石油大学电气信息学院

Author	Institution
Zhang An′an	1. School of Electrical Engineering and Information, Southwest Petroleum University
He Mingguang	1. School of Electrical Engineering and Information, Southwest Petroleum University
Yu Lu	2. CNOOC Research Institute Ltd
Li Qian	1. School of Electrical Engineering and Information, Southwest Petroleum University
Zhao Yizheng	1. School of Electrical Engineering and Information, Southwest Petroleum University
Wei Jun	1. School of Electrical Engineering and Information, Southwest Petroleum University

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中文摘要:

在洋流冲刷、人类活动和地质运动等外部激励的长期影响下,海缆的埋设深度容易发生持续性变化,从而导致海缆故障率急剧增加、负载能力大幅下降等一系列严重问题。本文以 35 kV 光电复合型三芯海底电缆为主要研究对象,采用有限元法仿真了不同环境温度、不同埋设深度以及不同载流量下的海缆温度场,建立了不同载流量下缆芯温度与埋设深度的关系曲线,不同环境温度下缆芯温度与埋设深度的关系曲线,并拟合了相应的关系式,以此整合出海缆埋设深度实时预测的关系方程式通式。最后运用工程实际监测的多源数据,通过该通式实时预测了海缆的埋设深度以及变化趋势,同时结合海缆扰动能量以及海缆埋设深度实测值,验证了该预测方法不仅具有可行性和正确性,也具有较高的预测精度。

英文摘要:

Under the long-term influence of external incentives such as ocean current scour, human activities and geological movements, the buried depth of submarine cables is prone to continuous changes, which leads to a series of serious problems such as a sharp increase in the failure rate of submarine cables and a sharp decline in load capacity. This paper takes 35 kV photoelectric composite three-core submarine cable as the main research object, uses the finite element method to simulate the temperature field of submarine cable under different ambient temperatures, different burial depths and different carrying rates, establishes the relationship curve between cable core temperature and buried depth under different ambient temperatures, and the relationship curve between cable core temperature and buried depth under different ambient temperatures, and fit the corresponding relationship formula. The general formula of the relationship equation for real-time prediction of submarine cable buried depth was integrated. Finally, by using the multi-source data of the actual project monitoring, the buried depth and change trend of submarine cable are predicted in real time through the general formula. At the same time, combined with the measured value of submarine cable disturbance energy and submarine cable buried depth, it is verified that the prediction method is not only feasible and correct, but also has high prediction accuracy.

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