500 kV充油海底电缆运行状态综合在线监测系统研究  

Research on integrated on-line monitoring system for operating status of 500 kV oil-filled submarine cable

作　　者：陈玉[1] 郝义 姚凯 李涵之 毛明锋 黄小卫[2] Chen Yu;Hao Yi;Yao Kai;Li Hanzhi;Mao Mingfeng;Huang Xiaowei(School of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,China;Bureau of EHV Transmission Company,China Southern Power Grid Co.,Ltd.,Guangzhou 510405,China)

机构地区：[1]西安交通大学电气工程学院,西安710049 [2]中国南方电网超高压输电公司广州局,广州510405

出　　处：《电测与仪表》2021年第10期133-139,169,共8页Electrical Measurement & Instrumentation

基　　金：国家重点研发计划资助(2016YFB0901200);南方电网科技项目(CGYKJXM20160002)。

摘　　要：海南联网系统500 kV海底电缆运行环境复杂多变,会直接影响到海底电缆的运行状态。为了有效掌握海南联网系统三相31 km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IEC 60287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500 kV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。The 500 kV submarine cable-operating environment of the Hainan Networking System is complex and changeable,which will directly affect the operating status of the submarine cable.In order to effectively grasp the operating status of the three-phase 31 km submarine cable in the Hainan Interconnection System,it is essential to study the integrated online monitoring technology for the operating status of the oil-filled submarine cable.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 carries out the research of distributed optical fiber temperature sensing technology based on Brillouin optical time-domain analysis,and establishes a thermal circuit model of the temperature and thermal field distribution of the oil-filled submarine cable based on the IEC 60287 thermal circuit model.A comprehensive online monitoring system for the operating status of the 500 kV 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.

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 

分 类 号：TM247[一般工业技术—材料科学与工程]