Due to the increasing demand of replacing large capacity overhead lines with underground cables in Korea, KEPCO (Korea Electric Power Corporation) and LS Cable (LS Cable & System) have developed 345 kV optical fi...Due to the increasing demand of replacing large capacity overhead lines with underground cables in Korea, KEPCO (Korea Electric Power Corporation) and LS Cable (LS Cable & System) have developed 345 kV optical fiber composite XLPE (cross-linked polyethylene) 2,500 mm2 cable system. This system has been installed in Cheongna district of Incheon city. KEPCO and LS Cable are also planning to build the cooling system in a tunnel in order to reduce the ambient temperature caused by currents. In this paper, the process of development, field installation, and final inspection test of the complete system will be described.展开更多
Acknowledgments Thanks for assistance and support, which is provided by State Grid Corporation of China and State Grid Communication Information & Telecommunication Company, for the project in the process of researc...Acknowledgments Thanks for assistance and support, which is provided by State Grid Corporation of China and State Grid Communication Information & Telecommunication Company, for the project in the process of research and development. Fibrlink Communications Co., Ltd will keep exerting itself to innovating, which aims for making more contribution of the smart grid on energy reduction and environment protection.展开更多
海缆是海缆基础设施供电和通信的关键载体,海缆监测对于保障海缆基础设施安全稳定运行具有重要工程意义。针对海缆扰动监测需求开展海缆扰动探测试验研究。首先,搭建基于分布式光纤传感技术的海缆扰动探测试验系统,并接入南海深海海底...海缆是海缆基础设施供电和通信的关键载体,海缆监测对于保障海缆基础设施安全稳定运行具有重要工程意义。针对海缆扰动监测需求开展海缆扰动探测试验研究。首先,搭建基于分布式光纤传感技术的海缆扰动探测试验系统,并接入南海深海海底观测网试验系统海缆暗光纤进行扰动探测试验,试验结果表明本系统能够有效探测铁锹拍击、车辆振动、海水冲刷及台风影响引起的海缆扰动。然后,根据海缆光纤瑞利背向散射(Rayleigh Backscattering,RBS)幅度信号特征,提出一种基于双向长短期记忆(Bidirectional Long Short-Term Memory,BiLSTM)神经网络的海缆扰动定位方法,本方法以海缆光纤RBS幅度信号的谱熵和瞬时频率作为特征参量输入,使用海缆光纤RBS幅度信号样本对本方法进行测试,结果表明本方法对海缆沿线扰动信号和非扰动信号的平均检测准确率高于99.6%。将海缆扰动探测试验系统与海缆扰动定位方法结合应用于海缆监测可有效探测海缆沿线扰动。展开更多
文摘Due to the increasing demand of replacing large capacity overhead lines with underground cables in Korea, KEPCO (Korea Electric Power Corporation) and LS Cable (LS Cable & System) have developed 345 kV optical fiber composite XLPE (cross-linked polyethylene) 2,500 mm2 cable system. This system has been installed in Cheongna district of Incheon city. KEPCO and LS Cable are also planning to build the cooling system in a tunnel in order to reduce the ambient temperature caused by currents. In this paper, the process of development, field installation, and final inspection test of the complete system will be described.
文摘Acknowledgments Thanks for assistance and support, which is provided by State Grid Corporation of China and State Grid Communication Information & Telecommunication Company, for the project in the process of research and development. Fibrlink Communications Co., Ltd will keep exerting itself to innovating, which aims for making more contribution of the smart grid on energy reduction and environment protection.
文摘海缆是海缆基础设施供电和通信的关键载体,海缆监测对于保障海缆基础设施安全稳定运行具有重要工程意义。针对海缆扰动监测需求开展海缆扰动探测试验研究。首先,搭建基于分布式光纤传感技术的海缆扰动探测试验系统,并接入南海深海海底观测网试验系统海缆暗光纤进行扰动探测试验,试验结果表明本系统能够有效探测铁锹拍击、车辆振动、海水冲刷及台风影响引起的海缆扰动。然后,根据海缆光纤瑞利背向散射(Rayleigh Backscattering,RBS)幅度信号特征,提出一种基于双向长短期记忆(Bidirectional Long Short-Term Memory,BiLSTM)神经网络的海缆扰动定位方法,本方法以海缆光纤RBS幅度信号的谱熵和瞬时频率作为特征参量输入,使用海缆光纤RBS幅度信号样本对本方法进行测试,结果表明本方法对海缆沿线扰动信号和非扰动信号的平均检测准确率高于99.6%。将海缆扰动探测试验系统与海缆扰动定位方法结合应用于海缆监测可有效探测海缆沿线扰动。