学科电报丨电气科研信息速递——第十五期

本期科研信息速递为同学们推荐了近期的学术会议，并聚焦于国内外热门的海缆线路序参数的计算和路径规划课题为同学们进行了相关前沿论文汇总。

学术会议

会议官网：https://www.pssgt.org

会议时间：2025年4月11日-13日

会议地点：中国-重庆

截稿日期：2025年1月10日

出版检索：EI, Scopus

会议官网：https://www.acpee.net

会议时间：2025年4月15-19日

会议地点：中国-北京

截稿日期：2025年2月20日

出版检索：EI, Scopus

会议官网：http://www.fafee.org.cn

会议时间：2025年5月23-25日

会议地点：中国-厦门

截稿日期：2025年本期科研信息速递为同学们推荐了近期的学术会议，并聚焦于国内外热门的海缆线路序参数的计算和路径规划课题为同学们进行了相关前沿论文汇总。月25日

出版检索：EI, Scopus

前沿论文

摘要：三芯海底电缆线路常用于海上风电的送出。在相关的规划设计和仿真分析中，三芯海底电缆线路的序参数是基础之一。基于电磁暂态仿真程序EMTP，以1条截面为3×500 mm2的220 kV海底电缆线路为例，对三芯海底电缆线路的序参数进行了计算与分析。文章计算了半导电聚乙烯护套的径向电阻，讨论了金属护套的处理方式。推导了三芯海底电缆线路单位长度的正序和零序阻抗、金属护套和铠装电流的计算式。研究了钢丝铠装的磁导率对三芯海底电缆线路电流分布及序参数的影响。此外，还分析了不同接地情况下光纤单元的铠装对三芯海底电缆线路序参数的影响。研究表明，三芯海底电缆线路的零序电阻远大于正序电阻，甚至可能大于零序电抗；当等值的相对磁导率μr在一定的范围内，可能出现零序电抗小于正序电抗的情况。文章将仿真与实测结果进行了对比。结果表明：选择适当的钢丝铠装磁导率，可以得到合理的计算结果。

三芯光电复合海缆结构示意图

关键词：EMTP；三芯海底电缆；序参数；钢丝铠装；磁导率

期刊：高电压技术（EI）

摘要: Submarine optical fiber communication cables (subsequently referred to as submarine cables) form the backbone of the Internet’s infrastructure. Damage to these cables can precipitate Internet outages with far-reaching socio-economic impacts. The prevailing practice of manual cable routing is laborious, considering the thousands of kilometers these cables span. It also fails to strike an optimal balance between cost and risk due to its lack of scalability and precision. The Fast Marching Method (FMM), a non-iterative, precise numerical approach capable of solving the Eikonal equation, offers a viable alternative by optimizing the required path between source and destination, considering a summary objective function of costs and risk factors. An interpretation of its solution signifies the optimum value of the objective function between a starting point and all other points. However, the sequential nature of the FMM algorithm suffers from computational limitations and impedes direct parallelization. In this study, we introduce an Adaptive Parallel FMM (APFMM), an innovative approach utilizing adaptive domain decomposition and dynamic multi resolution analysis. This scalable and widely applicable method can overcome the limitations of existing methods and achieve planning of high-precision, ultra-long-distance (over 14,000 km) submarine cable routes over the Earth’s surface. Simulated experiment results corroborate that APFMM effectively overcomes the computational challenges posed by the sequential FMM when dealing with large datasets. Additionally, it reduces the running time by more than 81% compared to the traditional parallel FMM. This marks a substantial advancement in facilitating efficient, automated, high-precision planning for long-distance submarine cable paths.

Global communications are facilitated by the use of submarine cables.

Source: TeleGeography.

关键词：Submarine optical fiber cables, path planning, adaptive parallel FMM, domain decomposition methods, multi resolution method, cost-effectiveness, survivability

期刊：IEEE Transactions on Automation Science and Engineering (Q1)