Research on the Emergency Current-Limiting Control in VSC-HVDC Grid

被引：0
|
作者：
Ni B. [1 ]
Xiang W. [1 ]
Zhou M. [1 ]
Zuo W. [1 ]
Cai P. [1 ]
Wen J. [1 ]
机构：
[1] State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan, 430074, Hubei Province
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2020年 / 40卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Current-limiting control; DC circuit breaker (DCCB); DC grid; Half-bridge MMC; Modular multi-level converter high voltage direct current (MMC-HVDC);
D O I：
10.13334/j.0258-8013.pcsee.190292
中图分类号：
学科分类号：
摘要：
The requirement for the high-speed and large-capacity DC circuit breaker (DCCB) hampers the development and application of the modular multi-level converter high voltage direct current (MMC-HVDC) grid. The current-limiting schemes based on hybrid MMC are restricted by the particular topology, and thus are not suitable for existing systems based on half-bridge MMC. This paper proposed an emergency current-limiting control scheme with generality of submodule topologies and fault types, which can reduce the breaking current and absorbed energy of the DCCB. The principle of the emergency current-limiting control, together with its coordination strategy with DCCB, were firstly introduced. The calculating equations of fault currents under current-limiting control were derived. The influence of the different switching time on the development of the fault current was studied. Eventually, the four-terminal DC grid based on half-bridge MMC was simulated. The simulation results show that the proposed current-limiting control can not only reduce breaking current and absorbed energy of the DCCB by 4.29kA (40.74%) and 23.4MJ (60.47%), respectively, but also can be suitable for high-resistance fault. © 2020 Chin. Soc. for Elec. Eng.
引用
收藏
页码：3527 / 3536
页数：9
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共 20 条
  • [1] Tang Guangfu, Luo Xiang, Wei Xiaoguang, Multi-terminal HVDC and DC-grid technology, Proceedings of the CSEE, 33, 10, pp. 8-17, (2013)
  • [2] Xu Zheng, Voltage source converter based HVDC power transmission systems, pp. 211-229, (2017)
  • [3] Zhou Qinyong, Discussion on interconnection mode of asian power grids, Power System Technology, 41, 5, pp. 1491-1497, (2017)
  • [4] Sun Yujiao, Zhou Qinyong, Shen Hong, Analysis and prospect on development patterns of China's power transmission network in future, Power System Technology, 37, 7, pp. 1929-1935, (2013)
  • [5] Xu Dianguo, Liu Yuchao, Wu Jian, Review on control strategies of multi-terminal direct current transmission system, Transactions of China Electrotechnical Society, 30, 17, pp. 1-12, (2015)
  • [6] Xu Zheng, Xue Yinglin, Zhang Zheren, VSC-HVDC technology suitable for bulk power overhead line transmission, Proceedings of the CSEE, 34, 29, pp. 5051-5062, (2014)
  • [7] Sun Xu, Cao Shidong, Bu Guangquan, Et al., Construction scheme of overhead line flexible HVDC grid, Power System Technology, 40, 3, pp. 678-682, (2016)
  • [8] Wu Ya'nan, Lu Zheng, He Zhiyuan, Et al., Study on the protection strategies of HVDC grid for overhead line application, Proceedings of the CSEE, 36, 14, pp. 3726-3733, (2016)
  • [9] Li Bin, He Jiawei, Li Ye, Et al., DC fault protection strategy for the flexible multi-terminal DC system, Proceedings of the CSEE, 36, 17, pp. 4627-4636, (2016)
  • [10] Chaffey G, Green T C., Reduced DC circuit breaker requirement on mixed converter HVDC networks, Proceedings of 2015 IEEE Eindhoven PowerTech, pp. 1-6, (2015)
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