Staged coordinated fault ride-through strategy for hybrid cascaded multi-terminal DC system

被引:0
作者
Yu J. [1 ]
Fan D. [1 ]
Xu K. [2 ]
Kong X. [1 ]
Zheng J. [1 ]
Dai Q. [1 ]
机构
[1] Electric Power Research Institute of State Grid Jiangsu Electric Power Co., Ltd., Nanjing
[2] State Grid Corporation of China, Beijing
来源
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2022年 / 42卷 / 06期
基金
中国国家自然科学基金;
关键词
Fault ride-through; Hybrid cascaded multi-terminal DC system; Low voltage dependent current order limiter; Voltage margin;
D O I
10.16081/j.epae.202204026
中图分类号
学科分类号
摘要
The anti-droop characteristics of the rectifier in the hybrid cascaded multi-terminal DC system weaken the system capability of power surplus compensation, which leads to the limitation of fault ride-through capability. A protection scheme that relies on the equipment's own overcurrent capability to against AC faults is proposed, and fault ride-through in different degrees can be realized by the staged coor-dinated control strategy. Multiple different converters at the DC receiving end coordinate and cooperate according to the pre-established operating modes to evacuate the system surplus power that caused by the blockage of the modular multilevel converter group. The simulative results show that the coordinated fault ride-through strategy can realize the rapid and stable transition to the preset stable operating point under different fault depths without the need to configure the discharge device on the DC side, which improves the fault ride-through capability of the hybrid cascaded multi-terminal DC system. © 2022, Electric Power Automation Equipment Press. All right reserved.
引用
收藏
页码:69 / 75
页数:6
相关论文
共 19 条
  • [1] pp. 1-9, (2010)
  • [2] pp. 7-9, (2013)
  • [3] XIE Huifan, FU Chao, LI Shiyang, Et al., Analysis on system stability characteristic of DC line fault recovery and converter station online disconnection of KLL MTDC, Southern Po-wer System Technology, 15, 6, pp. 7-14, (2021)
  • [4] LI G, LIANG J, JOSEPH T, Et al., Feasibility and reliability analysis of LCC DC grids and LCC/VSC hybrid DC grids, IEEE Access, 7, pp. 22445-22456, (2019)
  • [5] WANG Xi, LI Xingyuan, WEI Wei, Et al., Coordinated control strategy for interconnected transmission system of VSC-HVDC and LCC-HVDC, Electric Power Automation Equipment, 36, 12, pp. 102-108, (2016)
  • [6] LI G, AN T, LIANG J, Et al., Power reversal strategies for hybrid LCC/MMC HVDC systems, CSEE Journal of Power and Energy Systems, 6, 1, pp. 203-212, (2020)
  • [7] HALEEM N M, RAJAPAKSE A D, GOLE A M, Et al., In-vestigation of fault ride-through capability of hybrid VSC-LCC multi-terminal HVDC transmission systems, IEEE Tran-sactions on Power Delivery, 34, 1, pp. 241-250, (2019)
  • [8] CHANG Dongxu, GUO Qi, ZHU Yihua, Et al., Interface design and simulation of multi-terminal hybrid HVDC and security and stability control system, Power System Technology, 45, 9, pp. 3772-3780, (2021)
  • [9] LIU Shan, YU Jun, HE Zhiyuan, Et al., Research on the topo-logy and characteristic of multi-terminal HVDC based on VSC and LCC, Proceedings of the CSEE, 38, 10, pp. 2980-2988, (2018)
  • [10] XU Zheng, WANG Shijia, LI Ningcan, Et al., A LCC and MMC series hybrid HVDC topology suitable for bulk power overhead line transmission, Power System Technology, 40, 1, pp. 55-63, (2016)