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文章摘要
500kV充油海底电缆运行状态综合 在线监测系统研究
Research on integration on-line monitoring system of 500kV oil-filled submarine cable’s operation condition
Received:February 10, 2021  Revised:March 03, 2021
DOI:10.19753/j.issn1001-1390.2021.10.020
中文关键词: 充油海底电缆  分布式光纤传感技术  布里渊光时域分析  热路模型  温度  油流  油压
英文关键词: oil-filled submarine cable, distributed optical fiber sensing technology, brillouin optical time domain analysis, thermal circuit method, temperature, oil flow, oil pressure
基金项目:国家重点研发计划资助(2016YFB0901200); 南方电网科技项目(CGYKJXM20160002)
Author NameAffiliationE-mail
陈玉* Xi''an Jiaotong University chenyu@xjtu.edu.cn 
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中文摘要:
      充油海底电缆运行环境复杂多变,运行时会受到电、热、机械以及船锚、地震等外力的作用会产生绝缘老化、损坏甚至断裂,运行可靠性下降,严重时造成击穿事故。为了有效掌握海底电缆的运行状态,研究充油海底电缆运行状态综合在线监测技术至关重要。文中根据海底电缆实际运行监测要求,结合充油海底电缆捆绑通信光缆的这一特殊结构,开展了基于布里渊光时域分析的分布式光纤温度传感技术研究,建立了基于IEC60287热路模型的充油海底电缆的温度热场分布的热路模型, 研制了500kV充油海底电缆运行状态综合在线监测系统,完成了系统的现场安装及挂网运行。该系统能实时监测海底电缆的温度、油流以及油压等运行参数,通过海底电缆温度、油流以及油压历史数据分析,表明系统可实时监测海底电缆的运行状态及稳定可靠运行。
英文摘要:
      The operating environment of oil-filled submarine cables is complex and changeable. During operation, they will be affected by external forces such as electricity, heat, machinery, ship anchors, and earthquakes, which will cause insulation aging, damage or even breakage, reducing operational reliability, and causing breakdown accidents in severe cases. In order to effectively grasp the operating status of submarine cables, it is important to study the integrated online monitoring technology of oil-filled submarine cables. In accordance with the actual operation and monitoring requirements of submarine cables and the special structure of oil-filled submarine cables bundled with communication optical cables, this paper carried out the research of distributed optical fiber temperature sensing technology based on Brillouin optical time-domain analysis, and established a charging system based on the IEC60287 thermal circuit method. The thermal circuit model of the temperature and thermal field distribution of the oil submarine cable, a comprehensive online monitoring system for the operation of the 500kV oil-filled submarine cable has been developed, and the on-site installation and network operation of the system have been completed. The system can monitor the operating parameters of the submarine cable in real time, such as temperature, oil flow, and oil pressure. Through the analysis of historical data of the submarine cable temperature, oil flow and oil pressure, it shows that the system can monitor the operating status of the submarine cable in real time and operate stably and reliably.
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