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海底观测网接驳盒供电监控系统研究与设计
Alternative TitleStudy and Design on Junction Box Power Monitoring and Control System of Cabled Ocean Observatory
于伟经1,2
Department水下机器人研究室
Thesis Advisor李智刚
ClassificationTP277
Keyword海底观测网 海底供电系统 供电监控系统 接驳盒
Call NumberTP277/Y74/2013
Pages77页
Degree Discipline控制理论与控制工程
Degree Name硕士
2013-05-28
Degree Grantor中国科学院沈阳自动化研究所
Place of Conferral沈阳
Abstract海底观测网络是海底探测与研究的前沿课题,随着海洋需求的不断增加,建立新型的海底观测网络是海洋研究的一个发展趋势。与传统的海洋观测技术受到电能长期供给限制不同,海底观测网络能够提供持续电能供给,实现了对海底的长期连续实时原位观测。海底观测网的电能是由陆地电网通过光电复合缆和接驳盒提供的,为了实现对海底观测设备电能供给状态的在线实时监测和控制,提高海底供电系统的可靠性和用能效率,本文研究并设计了一套海底观测网接驳盒供电监控系统。海底观测网的供电具有长期、连续、远距离的特点,通过对高压直流输电和交流输电的对比分析,确定了海底观测网络的电能传输采用海水单极直流输电的方案;在海水单极直流输电中,随着时间的推移,阴极表面容易结垢,导致电极接触电阻增加,提出了倒极的方法去除阴极结垢,很好的解决了阴极结垢的问题;为了满足海底观测系统供电的要求,提出了利用分支单元,实现海底观测网供电系统的并联连接,隔离海缆故障部分,消除故障对其它观测网部分的影响;输入主接驳盒的直流电压是-10KV,无现成的电压测量传感器可用,提出了直流分压和线性光耦强隔离相结合的直流电压检测方法对-10KV直接电压进行测量;主接驳盒和次接驳盒之间以及次接驳盒和观测设备之间的水密电缆在恶劣的海底环境下长期运行,容易造成插头松动或者绝缘层破坏,从而发生接地故障,提出了一种注入直流电的方法对每条支路的接地故障实现在线带电实时巡回检测。设计了供电监控系统的应用软件。实现了供电监控系统对输入输出主接驳盒的电压电流和海底观测设备的工作电压、电流的测量,以及对水密电缆绝缘情况和各个舱体的温度、漏水情况的测量,并将这些数据通过光纤网络送到岸基站上位机。岸基站上位机实时处理显示运行参数,实现对系统的远程控制和管理。开展了系统的异常响应、倒极除垢和系统联调实验研究,结果表明了所设计的接驳盒供电监控系统的可靠性和稳定性。该系统能够可靠稳定的运行,为海底观测网长期运行提供了保证。本文的研究成果为我国实际的海底观测网络的建设提供了借鉴和支撑。
Other AbstractCabled ocean observatory has become the forefront subject of the sea exploration and research. To establish a new type of cabled ocean observatory is a majority tendency of the ocean tesearch, which is of great importance. Conventional ocean observation technology is restricted by long-term electric energy supply. Yet cabled ocean observatory provides continuous electric energy supply and long-term continuous realtime in-situ observation.The land Grid transmits continuous electrical power to cabled ocean observatory through optic-electric hybrid cables and junction boxes. A power monitoring and control system is designed for cabled ocean observatory. It also helps to implement online real time monitoring and increase the reliability and efficiency of the undersea power supplement for scientific instruments. The power supply system for the cabled ocean observatory should have the features such as long-term, continuous and long-distance. By comparing high voltage direct current and alternating current transmission, it can be found that direct current transmission has more advantages. On this basis, we use the direct current transmission and the seawater can be made as the conductor. It is found that the current shows a downward trend with the time increasing due to that cathode surface is covered by white fouling layer. The method of exchanging the electrode polarity can solve the problem of surface fouling which affects the current. In order to increase the reliability of the power supply system of the cabled ocean observatory, the branch units are added to the network. The branch units make the subsystem in parallel, isolate the submarine cable fault part and eliminate the impact of failure on the other part of observation network. For measuring the input -10kV DC voltage to the main junction box, the message uses the DC voltage detection method and strong linear optocoupler isolation. The main junction box and the sub-feeder boxes are connected by watertight cable. This method is also used in the connection between the sub-feeder boxes and observation equipments. The watertight cable is used in the harsh marine environment, so the problem of loose or insulating layer destruction must be considered. The message uses the method of the injection of DC ground fault of each branch to achieve real-time online live circuit detection. The circuit board and application software of power monitoring and management system are designed. Power monitoring and control system can measure voltage and current input or output main boxes and submarine observation equipments, watertight cables insulation, and temperature and leakage of vessels. In addition, it sends the data monitored to remote console located at the shore station though optic-fiber Ethernet. Thus, remote control and management can be achieved by the shore station console. The system’s abnormal response experiment and joint debugging experiment are carried out. Experimental results validate the system’s reliability and stability which is an important guarantee for the long term operation of ocean cabled observatory network. It’s certain that the results of present research provide important theoretical research basis and key technology support for the building of Chinese practical cabled ocean observatory.
Language中文
Contribution Rank1
Document Type学位论文
Identifierhttp://ir.sia.cn/handle/173321/10788
Collection水下机器人研究室
Affiliation1.中国科学院沈阳自动化研究所
2.中国科学院大学
Recommended Citation
GB/T 7714
于伟经. 海底观测网接驳盒供电监控系统研究与设计[D]. 沈阳. 中国科学院沈阳自动化研究所,2013.
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