采用串联网侧变换器的双馈风电系统不对称高电压穿越控制研究Research on HVRT Control of DFIG System Based on Series Grid-Side Converter During Asymmetrical Grid Voltage Swell
姚骏;郭利莎;曾欣;谭义;尹潇;
摘要(Abstract):
在分析电网电压不对称骤升时双馈感应发电机暂态特性的基础上,从最大限度吸收电网无功功率角度出发,提出适用于采用串联网侧变换器的双馈风力发电系统的不对称高电压穿越控制策略,并对该系统的可控能力进行分析。所提控制策略在电网电压故障期间,通过控制串联网侧变换器维持定子电压恒定,并实现定子磁链暂态直流分量的抑制。通过控制并联网侧变换器维持直流母线电压恒定,同时利用变流器电流裕量实现对系统总输出有功或无功功率波动的抑制。通过控制机侧变换器实现双馈风电系统的功率解耦控制,并在变流器过流能力有限的约束条件下,最大限度吸收无功功率以实现对故障电网的暂态无功支持。仿真结果表明,所提控制策略既可有效实现双馈风电系统的不对称高电压穿越,同时也可增强所并电网的运行稳定性。
关键词(KeyWords): 电网电压骤升;不对称故障;风力发电;高电压穿越;暂态无功支持
基金项目(Foundation): 国家自然科学基金资助项目(51477016);; 教育部中央高校基本科研业务费重点项目(106112015CDJZR155516)~~
作者(Author): 姚骏;郭利莎;曾欣;谭义;尹潇;
Email:
DOI: 10.13335/j.1000-3673.pst.2016.07.020
参考文献(References):
- [1]撖奥洋,张哲,尹项根,等.双馈风力发电系统故障特性及保护方案构建[J].电工技术学报,2012,27(4):233-239.Han Aoyang,Zhang Zhe,Yin Xianggen,el at.Research on fault characteristic and grid connecting-point protection scheme for wind power generation with doubly fed induction generator[J].Transactions of China Electrotechnical Society,2012,27(4):233-239(in Chinese).
- [2]张兴,曲庭余,谢震,等.对称电网电压骤升下双馈电机暂态分析[J].电源学报,2013(2):40-45.Zhang Xing,Qu Tingyu,Xie Zhen,et al.Dynamic analysis of DFIG under grid voltage swell[J].Journal of Power Supply,2013(2):40-45(in Chinese).
- [3]苏平,付纪华,赵新志,等.电网不对称故障下双馈风力发电机组穿越控制的研究[J].电力系统保护与控制,2011,39(16):101-106.Su Ping,Fu Jihua,Zhao Xinzhi,et al.Research on asymmetrical faults ride-through control of doubly fed induction generator[J].Power System Protection and Control,2011,39(16):101-106(in Chinese).
- [4]朱永利,艾斯卡尔,刘少宇,等.风力发电机组高电压穿越问题及其基本解决方案[J].华北电力大学学报,2014,41(5):6-11.Zhu Yongli,Aisikaer,Liu Shaoyu,et al.Isusues and preliminary solutions on wind turbines high voltage ride through[J].Journal of North China Electric Power University,2014,41(5):6-11(in Chinese).
- [5]Zhang Xing,Qu Tingyu,Xie Zhen,et al.Dynamic analysis of double fed induction generator during symmetrical voltage swells[C]//IEEE Conference on Mechanic Automation and Control Engineering.Hothot:IEEE,2011:1245-1248.
- [6]朱志权,禹华军,杨恩星.双馈风力发电机组高电压穿越研究[J].上海电气技术,2014,7(4):21-25.Zhu Zhiquan,Yu Huajun,Yang Enxing.High voltage ride through research of double-fed induction generator system[J].Journal of Shanghai Electric Technology,2014,7(4):21-25(in Chinese).
- [7]谢震,张兴,宋海华,等.电网电压骤升故障下双馈风力发电机变阻尼控制策略[J].电力系统自动化,2012,36(3):39-45.Xie Zhen,Zhang Xing,Song Haihua,et al.Variable damping based control strategy of double fed induction generator based wind turbines grid voltage swell[J].Automation of Electric Power Systems,2012,36(3):39-45(in Chinese).
- [8]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 ride through control strategy of doubly fed induction wind generators based on virtual impedance[J].Proceedings of the CESS,2012,32(27):16-23(in Chinese).
- [9]Feltels C,Engelhardt S,Kretschmann J,et al.High voltage ride-through of DFIG-based wind turbines[C]//IEEE Power&Energy Society General Meeting.Pittsburgh:IEEE,2008:1-8.
- [10]章玮,王宏胜,任远,等.不对称电网电压条件下三相并网型逆变器的控制[J].电工技术学报,2010,25(12):103-110.Zhang Wei,Wang Hongsheng,Ren Yuan,et al.Investigation on control of three-phase-grid-connected inverters under unbalanced grid voltage conditions[J].Transactions of China Electrotechnical Society,2010,25(12):103-110(in Chinese).
- [11]谢震,张兴,杨淑英,等.电网电压不对称骤升下双馈风力发电机改进控制策略[J].中国电机工程学报,2013,33(15):109-118.Xie Zhen,Zhang Xing,Yang Shuying,et al.An improved control strategy for doubly fed induction wind generators under unbalanced grid voltage swell[J].Proceedings of the CESS,2013,33(15):109-118(in Chinese).
- [12]李俊杰,蒋昆,刘国平,等.采用串联网侧变换器的双馈风电系统高电压穿越控制策略研究[J].电网技术,2014,38(11):3037-3044.Li Junjie,Jiang Kun,Liu Guoping,et al.High voltage ride-through control strategy of doubly-fed induction generator based wind turbines with a series grid-side converter[J].Power System Technology,2014,38(11):3037-3044(in Chinese).
- [13]Li Ruiqi,Geng Hua.Asymmetrical high voltage ride through control strategy of grid-side converter for grid-connected renewable energy equipment[C]//IEEE Electronics and Application Conference and Exposition.Shanghai:IEEE,2014:496-501.
- [14]贾俊川,刘晋,张一工.电网电压故障时双馈异步发电机定子磁链的动态特性研究[J].中国电机工程学报,2011,31(3):90-96.Jia Junchuan,Liu Jin,Zhang Yigong.Dynamic characteristics of stator flux of double-fed induction generator during grid voltage fault[J].Proceedings of the CSEE,2011,31(3):90-96(in Chinese).
- [15]Yao Jun,Li Hui,Chen Zhe,et al.Enhanced control of DFIG-based wind-power generation system with series grid-side converter under unbalanced grid voltage conditions[J].IEEE Transactions on Power Electronics,2013,28(7):3167-3181.
- [16]徐海亮,章玮,陈建生,等.考虑动态无功支持的双馈风电机组高电压穿越控制策略[J].中国电机工程学报,2013,33(36):112-119.Xu Hailiang,Zhang Wei,Chen Jiansheng,et al.A high-voltage ride-through control strategy for DFIG based wind turbines considering dynamic reactive power support[J].Proceedings of the CSEE,2013,33(36):112-119(in Chinese).
- [17]郑重,耿华,杨耕.新能源发电系统并网逆变器的高电压穿越控制策略[J].中国电机工程学报,2015,35(6):1463-1472.Zheng Zhong,Geng Hua,Yang Geng.High voltage ride-through control strategy of grid-connected inverter for renewable energy system[J].Proceedings of the CSEE,2015,35(6):1463-1472(in Chinese).