Study on Loss Characteristics of Three Core Armored Cable under Low-Frequency Transmission Mode Based on Electromagnetic, Thermal Coupling Principle

被引：0
|
作者：
Liu S. [1 ]
Luo Y. [1 ]
Liu Z. [2 ]
Deng J. [1 ]
Cai G. [1 ]
机构：
[1] Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology Ministry of Education, Northeast Electric Power University, Jilin
[2] State Key Lab of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute Co. Ltd, Beijing
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2021年 / 36卷 / 22期
关键词：
Ampacity; Cables losses; Circulating current in sheath; Induced voltage; Low frequency;
D O I：
10.19595/j.cnki.1000-6753.tces.201590
中图分类号：
学科分类号：
摘要：
Accurately computing cable loss is one of the critical issues to improve the economics of submarine cables and realize the efficient transmission of deep-sea wind power. In this study, according to the submarine cable's actual laying conditions, a multi-physical coupling model of submarine cable is established based on the electromagnetic field and heat transfer field. This model can help to analyze the distribution of cable core current under low-frequency transmission mode. Based on this model, this paper studies induced voltage calculated by IEC standard, loss factor, and error of ampacity. The research shows that the average current density of the cable core deviates from the cable core center. The deviation distance increases with the increase of transmission frequency, which caused the sheath induced voltage and loss error calculated by IEC to change in the same direction. When the core radius is greater than 24mm, the sheath loss factor's error becomes more massive. When the cable core's cross-sectional area is 2 000 mm2, the ampacity error under fractional frequency and industrial frequency is about 10% and 15%, respectively. The calculation results lay a foundation for reasonable determination of the current carrying capacity of submarine cables. © 2021, Electrical Technology Press Co. Ltd. All right reserved.
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页码：4829 / 4836
页数：7
相关论文
共 23 条
  • [1] Li Xiang, Han Minxiao, A coordinated control strategy of series multi-terminal VSC-HVDC for offshore wind farm, Transactions of China Electrotechnical Society, 28, 5, pp. 42-48, (2013)
  • [2] Jiang Nan, Analysis on status and prospect of wind power generation in deep sea, Advances in New and Renewable Energy, 3, 1, pp. 21-24, (2015)
  • [3] Offshore wind in europe key trends and statistics 2017
  • [4] Chi Yongning, Liang Wei, Zhang Zhankui, Et al., An overview on key technologies regarding power transmission and grid integration of large scale offshore wind power, Proceedings of the CSEE, 36, 14, pp. 3758-3771, (2016)
  • [5] Yang Yue, Li Guoqing, The small signal stability control of offshore wind farm based on VSC-HVDC, Transactions of China Electrotechnical Society, 31, 13, pp. 101-110, (2016)
  • [6] Wang Xiuli, Zhang Xiaoliang, Ning Lianhui, Et al., Application prospects and challenges of fractional frequency transmission system in offshore wind power integration, Electric Power Engineering Technology, 36, 1, pp. 15-19, (2017)
  • [7] Chen Hao, Johnson M H, Aliprantis D C., Low-frequency AC transmission for offshore wind power, IEEE Transactions on Power Delivery, 28, 4, pp. 2236-2244, (2013)
  • [8] Wang Xifan, WEI Xiaohui, Ning Lianhui, Et al., Integration techniques and transmission schemes for off-shore wind farms, Proceedings of the CSEE, 34, 31, pp. 5459-5466, (2014)
  • [9] Ruddy J, Meere R, O'louchin C, Et al., Design of VSC connected low frequency AC offshore transmission with long HVAC cables, IEEE Transactions on Power Delivery, 33, 2, pp. 960-970, (2018)
  • [10] Zou Hongliang, Sun Yunlian, Zhang Chi, Et al., Effects of different multi-loop laying ways on circulating current of power cable, High Voltage Engineering, 42, 8, pp. 2426-2433, (2016)
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