Review on recent optical submarine cable network systems - 2. Transmission technologies for high-capacity long-haul optical sibmarine systems.

2003 ◽  
Vol 123 (4) ◽  
pp. 212-215
Author(s):  
NOBORU EDAGAWA
Keyword(s):  
High Capacity ◽  
Submarine Cable ◽  
Network Systems ◽  
Cable Network

scholarly journals Optimal Tree Topology for a Submarine Cable Network With Constrained Internodal Latency

2021 ◽  
pp. 1-1
Author(s):  
Tianjiao Wang ◽  
Xinyu Wang ◽  
Zengfu Wang ◽  
Chao Guo ◽  
William Moran ◽  
...  
Keyword(s):  
Tree Topology ◽  
Submarine Cable ◽  
Cable Network ◽  
Optimal Tree

Researches on Reactive Compensation for Long-Distance and Highcapacity Hybrid Submarine Cable Lines

2012 ◽  
Vol 433-440 ◽  
pp. 2406-2410
Author(s):  
Dong Mei Sun ◽  
Jun Wen
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Reactive Power ◽  
High Capacity ◽  
Reactive Power Compensation ◽  
Submarine Cable ◽  
Long Distance ◽  
Power Frequency ◽  
Electro Magnetic ◽  
Cable Lines

In order to balance reactive power, reduce line losses, prevent excessive power frequency and switching over-voltage and adjust and control the line voltage etc. The long-distance and high voltage transmission lines are needed reactive power compensation. High voltage overhead transmission lines and high voltage submarine cable (including mixed-submarine) transmission lines are different, for example, the capacitance in the submarine cable lines is larger than in the conventional overhead lines. Therefore, the reactive power compensation on the EHV transmission lines which contains submarine cable lines is focus on the compensation of submarine cable lines. The reactive power compensation in 500 kV AC submarine cable interconnection project for Hainan power grid and Guangdong power grid[1], which is the first 500 kV long-distance and high-capacity sea trails interconnection project in China and which is just completed soon, is researched by Electro-Magnetic Transient Program——PSCAD/EMTDC (Power System Computer Aided Design/ Electro Magnetic Transient in DC System in this paper). The simulation results verifies that the role of shunt reactor which could absorb charging power and suppress the power frequency overvoltage for the long-distance and high-capacity hybrid submarine cable lines. The conclusions can offer references to suppress power frequency overvoltage and the reactive power compensation in extra high voltage transmission lines which is the mixed mode of overhead transmission lines and submarine cables.

scholarly journals Vulnerability of Submarine Cable Network of Mainland China: Comparison of Vulnerability between before and after Construction of Trans-Arctic Cable System

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Yongshun Xie ◽  
Chengjin Wang
Keyword(s):  
Quantitative Method ◽  
Mainland China ◽  
International Communication ◽  
Cyber Physical Systems ◽  
Submarine Cable ◽  
Cable System ◽  
Physical Systems ◽  
Cable Network ◽  
Before And After ◽  
Optical Fiber Cable

The submarine optical-fiber cable (submarine cable) is a large connectivity infrastructure, which plays an important role in international communication, cyber-physical systems, and even national security. Although submarine cable network interruption may cause serious consequences, researching its vulnerability has not attracted much attention. This paper proposes a quantitative method to measure the vulnerability of the submarine cable network and evaluates the influence of the upcoming trans-Arctic cable (TAC) system on the submarine cable network of mainland China. To address this issue, first, the submarine cable network of mainland China is constructed. Further, methodology based on complex network and geospatial perspective is proposed to simulate the changes of network eigenvalues under different attacks and to quantitatively analyze the variation degree of network vulnerability. With the proposed method, the vulnerability of the submarine cable network of mainland China before and after construction of the trans-Arctic cable system is compared. The results reveal the key node countries and sea channels of the submarine cable network of mainland China and show the significance of the TAC system.

The Architecture of High-Capacity Storage Systems

2015 ◽  
Vol 1117 ◽  
pp. 291-296
Author(s):  
Krisztina Tibenszkyné Fórika
Keyword(s):  
Storage Systems ◽  
High Capacity ◽  
Computer Hardware ◽  
Rapid Progression ◽  
Network Architectures ◽  
Network Systems ◽  
Systems Architecture ◽  
Computing Industry ◽  
Technological Developments ◽  
Insight Into

The computing industry is one of the fastest growing industries and it is caused by the rapid progression of computer hardware and software technological developments. The high-capacity storage systems become the important element of the network architectures. The network architectures of high-capacity storage systems can be developed by using various, different techniques. The present paper aims to give a review about the storage systems architecture, systematize the various types of connection, and present the significance of virtualization. Based on industry specific literature and on own research, the present paper sets up a clear systematization of these techniques by providing a brief summary of their essence, while also providing examples of their application in different network storages. The present article also provides an insight into the topic of the different connecting types of network systems, while highlighting the importance of virtualization and application of the iSCSI technology. After the explanation of the challenge of redundancies in storage systems, the author outlines the importance of using RAID (Redundant Array of Independent Disks) technology for handling the issue of redundancy

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