基于模块化多电平换流器的直流输电系统网侧不平衡故障穿越研究

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摘要基于模块化多电平换流器(Modular Multilevel Converters , MMC)柔性直流输电系统在电网发生单相或两相故障时,会导致MMC桥臂上产生两倍频的正序,负序和零序环流,零序环流由于不能在三相桥臂之间相互抵消而进入高压直流侧,会影响其他换流站的运行.为此设计了二次零序环流控制器来对其进行抑制.并针对不平衡故障时,在相同传输功率下子模块电容电压波动幅值变大的问题,提出了通过对桥臂注入一定的负序二次环流,降低子模块电容电压波动的控制策略.在Matlab/Simulink中搭建了基于MMC-HVDC的仿真模型,仿真结果表明此算法能保证直流母线电压的稳定,并降低子模块电容电压的波动,提高了MMC换流器不平衡故障的穿越能力.

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	廖武
	黄守道
	黄晟
	王辉

关键词 ：模块化多电平换流器, 柔性直流输电, 不平衡故障, 电压波动

Abstract：Modular Multilevel Converters(MMC) will have the positive, negative and zero sequence second harmonic circulating current in the flexible HVDC system under asymmetric AC voltages. Zero-sequence can not cancel each other in the three-phase leg, and will flow into the high-voltage DC side, which will affect the other converter station in flexible HVDC system. On this basis, a control strategy to suppress the zero sequence second harmonic circulating current was presented. For the Submodule(SM) capacitor voltage fluctuation will increase under unbalanced grid fault, SM capacitor voltage control method which injects the negative sequence second harmonic circulating current was presented. Simulation model of MMC-HVDC is built in Matlab/Simulink and verify the correctness of the algorithm.

Key words： Modular Multilevel Converter(MMC) Flexible DC transmission Unbalanced Grid Fault SM capacitor voltage fluctuation

收稿日期: 2014-07-10 出版日期: 2015-09-14

PACS:

TM315

基金资助:国家国际科技合作专项项目(2011DFA62240),国家自然科学基金(51377050)

作者简介: 廖武男,1988年生,博士研究生,研究方向为柔性直流输电技术.黄守道男,1962年生,教授,博士生导师,研究方向为新能源发电技术.

引用本文:

廖武,黄守道,黄晟,王辉. 基于模块化多电平换流器的直流输电系统网侧不平衡故障穿越研究[J]. 电工技术学报, 2015, 30(12): 197-203. Wu Liao,Shoudao Huang,Sheng Huang,Hui Wang. Unbalanced Grid Fault Ride-through Control Method of HVDC Power Transmission Based on Modular Multilevel Converters. Transactions of China Electrotechnical Society, 2015, 30(12): 197-203.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2015/V30/I12/197

[1] 梁海峰, 李庚银, 王松, 赵成勇. VSC-HVDC 系统控制体系框架[J]. 电工技术学报, 2009, 24(5): 141-147. Liang Haifeng, Li Gengyin, Wang Song, et al. VSC- HVDC control system framework[J]. Transactions of China Electrotechnical Society, 2009, 24(5): 141-147.
[2] 管敏渊, 徐政. 向无源网络供电的MMC 型直流输电系统建模与控制[J]. 电工技术学报, 2013, 28(2): 255-263. Guan Minyuan, Xu Zheng. Modeling and control of modular multilevel converter based VSC-HVDC system connected to passive networks[J]. Transactions of China Electrotechnical Society, 2013, 28(2): 255-263.
[3] Makoto Hagiwara, Hirofumi Akagi, Control and Experiment of pulsewidth-modulated modular multilevel converters[J]. IEEE Transactions on Power Electronics, 2009, 24(7): 1737-1746.
[4] Gilbert Bergna, Erik Berne, Philippe Egrot, et al. An energy-based controller for hvdc modular multilevel converter in decoupled double synchronous reference frame for voltage oscillation reduction[J]. IEEE Transactions on Industrial Electronics, 2013, 60(6): 2360-2371.
[5] 杨晓峰, 林智钦, 郑琼林, 等. 模块组合多电平变换器的研究综述[J]. 中国电机工程学报, 2013, 33(6): 1-14. Yang xiaofeng, lin zhiqin, zheng trillionq. et al. A review of modular multilevel converters[J]. Proceedings of the CSEE, 2013, 33(6): 1-14.
[6] 高建, 苏建徽, 高航, 等. 模块化多电平换流器电容电压与环流的控制策略[J]. 电力系统保护与控制, 2014, 42(3): 56-62. Gao Jian, Su Jianhui, Gao Hang, et al. Capacitor voltage and circulation current control strategy in modular multilevel converter[J]. Power System Protec- tion and Control, 2014, 42(3): 56-62.
[7] 屠卿瑞, 徐政, 郑翔, 管敏渊. 模块化多电平换流器型直流输电内部环流机理分析[J]. 高电压技术, 2010, 36(2): 547-552. Tu Qingrui, Xu Zheng, Zheng Xiang, Guan Minyuan. Mechanism analysis on the circulating current in modular multilevel converter based HVDC[J]. High Voltage Engineering, 2010, 36(2): 547-552.
[8] 周月宾, 江道灼, 郭捷, 梁一桥, 胡鹏飞. 模块化多电平换流器子模块电容电压波动与内部环流分析[J]. 中国电机工程学报, 2012, 32(24): 8-14. Zhou Yuebin, Jiang Daozhuo, Guo Jie, Liang Yiqiao, Hu Pengfei. Analysis of Sub-module Capacitor Voltage Ripples and Circulating Currents in Modular Multilevel Converters[J]. Proceedings of the CSEE, 2012, 32(24): 8-14.
[9] 屠卿瑞, 徐政, 管敏渊, 郑翔, 张静. 模块化多电平换流器环流抑制控制器设计[J]. 电力系统自动化, 2010, 34(18): 57-61. Tu Qingrui, Xu Zheng, Guan Minyuan1, et al. Design of circulating current suppressing controllers for modular multilevel converter[J]. Automation of Electric Power Systems, 2010, 34(18): 57-61.
[10] 张建坡赵成勇. 模块化多电平换流器环流及抑制策略研究[J]. 电工技术学报, 2013, 28(10): 328-336. Zhang Jianpo, Zhao Chengyong. Research on circulation current and suppressing strategy of modular multilevel converter[J]. Transactions of China Electrotechnical Society, 2013, 28(10): 328-336.
[11] Minyuan Guan, Zheng Xu. Modeling and control of a modular multilevel converter-based HVDC system under unbalanced grid conditions[J]. IEEE Transactions on Power Electronics, 2012, 27(12): 4858-4867.
[12] Artjoms Timofejevs, Daniel Gamboa, Marco Liserre, Remus Teodorescu, Sanjay K. Chaudhary. Control of transformerless MMC-HVDC during asymmetric grid faults[C]. IECON 2013 - 39th Annual Conference of the IEEE, 2013: 2016-2021.
[13] Qingrui Tu, Zheng Xu, Yong Chang, et al. Suppressing DC voltage ripples of MMC-HVDC under unbalanced grid conditions[J]. IEEE Transactions on Power Delivery, 2012, 27(3): 1332-1338.
[14] Ji-Woo Moon, Chun-Sung Kim, Jung-Woo Park, Dae-Wook Kang, Jang-Mok Kim. Circulating current control in mmc under the unbalanced voltage[J]. IEEE Transactions on Power Delivery, 2013, 28(3): 1952-1959.
[15] Yuebin Zhou, Daozhuo Jiang, Jie Guo, PengfeiHu, Yiqiao Liang,. Analysis and control of modular multilevel converters under unbalanced conditions[J]. IEEE Transactions on Power Delivery, 2013, 28(4): 1986-1995.
[16] Picas R, Pou J, Ceballos S, Zaragoza J. Optimal injection of harmonics in circulating currents of modular multilevel converters for capacitor voltage ripple minimization[C]. ECCE Asia Downunder (ECCE Asia), 2013: 318-324.