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利用虚拟电阻提高接入弱交流电网的MMC小信号稳定性控制方法

DOI: 10.13334/j.0258-8013.pcsee.2015.15.007, PP. 3794-3802

Keywords: 虚拟电阻,模块化多电平换流器,弱交流电网,功率同步控制,稳定性分析,运行极限

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Abstract:

模块化多电平换流器(modularmultilevelconverter,MMC)换流阀具有自关断能力,适用于向弱交流电网供电。该文对已有功率同步控制方法进行改进,通过在电压调制波处增加虚拟电阻控制,等效增大系统与弱交流电网之间的电阻,从而增强系统的稳定性。该方法实现简单,同时虚拟电阻并不消耗能量,不会降低换流器的传输效率。文中建立了受端弱交流电网MMC系统小信号数学模型,通过对多输入多输出系统开环传递函数矩阵进行分析,得到虚拟电阻对系统稳定运行特性的影响;同时对虚拟电阻的作用机理进行研究,分析得出虚拟电阻对系统运行极限的影响。最后,在PSCAD/EMTDC中搭建了101电平受端弱交流电网MMC系统仿真模型,仿真结果验证了虚拟电阻控制的有效性,同时体现了虚拟电阻对系统运行极限的影响。

References

[1]  Lesnicar A,Marquardt R.An innovative modular multilevel converter topology suitable for a wide power range[C]//IEEE Power Technology Conference,Bologna,Italy,2003:1-6.
[2]  Dorn J,Huang H,Retzmann D.Novel voltage source converters for HVDC and FACTs applications[C]//CIGRE Symposium,Osaka,Japan,2007:314-321.
[3]  王珊珊,周孝信,汤广福,等.模块化多电平电压源换流器的数学模型[J].中国电机工程学报,2011,31(24):1-8.Wang Shanshan,Zhou Xiaoxin,Tang Guangfu,et al.Modeling of modular multi-level voltage source converter[J].Proceedings of the CSEE,2011,31(24):1-8(in Chinese).
[4]  汤广福,罗湘,魏晓光.多端直流输电与直流电网技术[J].中国电机工程学报,2013,33(10):8-17.Tang Guangfu,Luo Xiang,Wei Xiaoguang.Multi-terminal HVDC and DC-grid technology[J].Proceedings of the CSEE,2013,33(10):8-17(in Chinese).
[5]  徐政.柔性直流输电系统[M].北京:机械工业出版社,2012:92-110.Xu Zheng.Voltage source converter HVDC power system[M].Beijing:China Machine Press,2012:92-110(in Chinese).
[6]  赵成勇.柔性直流输电建模和仿真技术[M].北京:中国电力出版社,2014:8-11.Zhao Chengyong.Flexible HVDC modeling and simulation technology[M].Beijing:China Electric Power Press,2014:8-11(in Chinese).
[7]  Jenny Z Zhou,Hui Ding,Shengtao Fan,et al.Impact of short-circuit ratio and phase-locked loop parameters on the small-signal behavior of a VSC-HVDC Converter[J].IEEE Trans. on Power Delivery,2014,29(5):2287-2296.
[8]  M Durrant,H Werner,and K Abbott.Model of a VSC HVDC terminal attached to a weak ac system[C]//IEEE Conference Control Applications,Istanbul,Turkey,2003:178-182.
[9]  Harnefors L,Bongiornos M,Lundberg S.Input-admittance calculation and shaping for controlled voltage-source converter[J].IEEE Trans. on Industrial Electronics,2007,54(6):3323-3334.
[10]  Jovcic D,Lamont L A,Xu L.VSC transmission model for analytical studies[C]//IEEE Power Energy Society General Meeting,Toronto,Canada,2003:1737-1742.
[11]  Lidong Zhang,Lennart Harnefors,Hans-Peter Nee.Power-synchronization control of grid-connected voltage-source converters[J].IEEE Trans. on Power Systems,2010,25(2):809-820.
[12]  Zhang Lidong,Nee H P,Harnefors L.Analysis of stability limitations of a VSC-HVDC link using power- synchronization control[J].IEEE Trans. on Power Systems,2011,26(3):1326-1337.
[13]  Zhang L,Harnefors L,Nee H P.Interconnection of two very weak ac systems by VSC-HVDC links using power-synchronization control[J].IEEE Trans. on Power Systems,2011,26(1):344-355.
[14]  Zhang L,Nee H P.Multivariable feedback design of VSC-HVDC connected to weak ac systems[C]//IEEE Bucharest Power Technology Conference,Bucharest,Romania,2009:1-8.
[15]  于玮,徐德鸿.基于虚拟阻抗的不间断电源并联系统均流控制[J].中国电机工程学报,2009,29(24):32-39.Yu Wei,Xu Dehong.Control scheme of paralleled UPS system based on output virtual resistance[J].Proceedings of the CSEE,2009,29(24):32-39(in Chinese).
[16]  谢震,张兴,杨淑英,等.基于虚拟阻抗的双馈风力发电机高电压穿越控制策略[J].中国电机工程学报,2012,32(27):16-23.Xie Zhen,Zhang Xing,Yang Shuying,et al.High-Voltage right through control strategy of doubly fed induction wind generators based on virtual impedence[J].Proceedings of the CSEE,2012,32(27):16-23(in Chinese).
[17]  陈宏志,王旭,刘建昌.基于虚拟电阻匹配模式的逆变器并联方案[J].中国电机工程学报,2012,32(6):24-32.Chen Hongzhi,Wang Xu,Liu Jianchang.Current sharing method for parallel inverters based impedance matching mode[J].Proceedings of the CSEE,2012,32(6):24-32(in Chinese).
[18]  温春雪,李正熙.基于虚拟电阻控制环的并联逆变器简化控制方法[J].电工技术学报,2012,27(6):63-68.Wen Chunxue,Li Zhengxi.A simplified control method of parallel inverters based on virtual impedance control loop[J].Transaction of China Electrotechnical Society,2012,27(6):63-68(in Chinese).
[19]  Sigurd Skogestad,Ian Postlethwaite.Multivariable Feedback Control:Analysis and Design[M].New York:JON WILEY & SONS,1988:139-141.
[20]  倪以信,陈寿孙,张宝霖.动态电力系统的理论和分析[M].北京:清华大学出版社,2002:216-218.Ni Yixin,Chen Shousun,Zhang Baolin.Dynamic Theory and Analysis of Power System[M].Beijing:Tsinghua University Press,2002:216-218(in Chinese).

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