大规模直驱风电场次同步振荡的影响因素分析
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摘要
针对哈密地区大规模风电场在无串补情况下发生的次同步振荡现象。文中在PSCAD/EMTDC软件上搭建了多机直驱风电场无串补输电系统模型,结合特征值分析法研究了风速、网侧控制器参数、风电汇集点短路比和火电机组出力对次同步振荡特性的影响,并进行仿真验证。结果表明:无串补情况下,风电场在各风段均有可能发生次同步振荡,风速小,振荡频率高,风速大,振荡频率低。网侧控制器比例增益越大,振荡频率越小,积分增益越大,振荡频率越大。短路比越小,系统发生次同步振荡的可能性越大。低功率运行时,火电机组出力在50%～80%范围内,系统发生次同步振荡的可能性最大。
In this paper,for large wind farms in Hami area in the series compensated case of subsynchronous oscillation phenomenon,based on PSCAD/EMTDC software,the model of no series compensated transmission system of multi machine direct-drive wind power farm is built,combined with eigenvalue analysis method,the effects of wind speed,parameters of grid-side controller,short circuit ratio of wind power collecting point and output of thermal power unit on the sub-synchronous oscillation characteristics are studied and verified by simulation. The results show that there is no series compensation case,the wind farm may occur in the subsynchronous oscillation in the wind while the wind speed is small,high oscillation frequency,wind speed,low oscillation frequency. The net side controller proportional gain more. Vibration swing frequency is small,the greater the integral gain,oscillation frequency is greater. Short circuit ratio decrease the possibility of system subsynchronous oscillation increases. Low power operation,power units within the range of 50%～80% and the possibility of system subsynchronous oscillation.
In this paper,for large wind farms in Hami area in the series compensated case of subsynchronous oscillation phenomenon,based on PSCAD/EMTDC software,the model of no series compensated transmission system of multi machine direct-drive wind power farm is built,combined with eigenvalue analysis method,the effects of wind speed,parameters of grid-side controller,short circuit ratio of wind power collecting point and output of thermal power unit on the sub-synchronous oscillation characteristics are studied and verified by simulation. The results show that there is no series compensation case,the wind farm may occur in the subsynchronous oscillation in the wind while the wind speed is small,high oscillation frequency,wind speed,low oscillation frequency. The net side controller proportional gain more. Vibration swing frequency is small,the greater the integral gain,oscillation frequency is greater. Short circuit ratio decrease the possibility of system subsynchronous oscillation increases. Low power operation,power units within the range of 50%～80% and the possibility of system subsynchronous oscillation.
引文
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[9]李明节,于钊,许涛,等.新能源并网系统引发的复杂振荡问题及其对策研究[J].电网技术,2017,41(4):1035-1042.LI Mingjie,YU Zhao,XU Tao,et al.Study of complex oscillation caused by renewable energy integration and its solution[J].Power System Technology,2017,41(4):1035-1042.
[10]丁国栋.双馈风电机组次同步振荡研究[D].上海:上海机电学院,2015.DING Guodong.The study on subsynchronous oscillations of doubly fed wind turbine[D].Shanghai:Shanghai Dian Ji University,2015.
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[13]李辉,陈宏文,杨超,等.含双馈风电场的电力系统低频振荡模态分析[J].中国电机工程学报,2013,33(28):17-24.LI Hui,CHEN Hongwen,YANG Chao,et al.Modal analysis of the low-frequency oscillation of power systems with DFIG-based wind farms[J].Proceedings of the CSEE,2013,33(28):17-24.
[14]张艳富,肖军,朱会芳.风力发电机多台机组同时脱网故障的研究与探索[J].风能产业,2016(10):47-51.ZHANG Yanfu,XIAO Jun,ZHU Huifang.Research and exploration on the fault of multi unit of wind turbine[J].Wind Power Industry,2016(10):47-51.
[15]任勇,黄永宁,高峰.宁东直流近区新能源诱发次同步振荡风险评估[J].宁夏电力,2016(1):53-58.REN Yong,HUANG Yongning,GAO Feng.Risk assessment on new energy induced sub-synchronous oscillation in eastern Ningxia DC nearby area of Ningxia power grid[J].Ningxia Electric Power,2016(1):53-58.
[16]谢小荣,刘华坤,贺静波,等.直驱风机风电场与交流电网相互作用引发次同步振荡的机理与特性分析[J].中国电机工程学报,2016,36(9):2366-2372.XIE Xiaorong,LIU Huakun,HE Jingbo,et al.Mechanism and characteristics of subsynchronous oscillation caused by the iteraction between full-converter wind turbines and AC systems[J].Proceedings of the CSEE,2016,36(9):2366-2372.
[17]WALKER D N,BOWLER C E,JACKSON R L,et al.Results of sub-synchronous resonance test at mohave[J].IEEETransactions on Power Apparatus and Systems,1975,94(5):1878-1889.
[18]IEEE Sub-synchronous Resonance Group.Reader’s guide to sub-synchronous resonance[J].IEEE Trans.on Power Systems,1992,7(1):150-157.
[19]IEEE Sub-synchronous Resonance Group.Terms,definitions andsymbolsforsub-synchronousoscillations[J].IEEETrans.onPowerApparatusandSystems,1985,104(6):1326-1333.
[20]常喜强,赵明君,梁静,等.基于风电仿真模型等值的相关讨论[J].四川电力技术,2014(4):31-35.CHANG Xiqiang,ZHAO Mingjun,LIANG Jing,et al.Based on the equivalence of wind power simulation model[J].Sichuan Electric Power Technology,2014(4):31-35.
[21]武家辉,王海云,王维庆,等.混合三端直流输电系统在风火打捆并网中的应用及其控制策略[J].电力系统保护与控制,2016,44(2):49-55.WU Jiahui,WANG Haiyun,WANG Weiqing,et al.Abundling system of wind-coal power plants and its control strategies based on hybrid MTDC transmissions[J].Power System Protection and Control,2016,44(2):49-55.
[22]刘为杰,姜建国.直驱永磁同步风电机组次同步振荡建模与分析[J].电机与控制应用,2017(1):97-103.LIU Weijie,JIANG Jianguo.Modeling and analysis for direct-drive permanent magnet synchronous wind turbine generator in sub-synchronous oscillation[J].Electric Machines&Control Application,2017(1):97-103.
[23]FAN Lingling,ZHU Chanxia,MIAO Zhixin,et al.Modal analysis of a DFIG-based wind farm interfaced with a series compensated network[J].IEEE Transactions on Energy Conversion,2011,26(4):1010-1020.
[24]董晓亮,侯金鸣,田旭,等.不同位置子群风电场主导因素变化对次同步谐振特性影响程度比较[J].高电压技术,2016,42(7):2259-2265.DONG Xiaoliang,HOU Jinming,TIAN Xu,et al.Comparison of the impact level on subsynchronous resonance characteristics of dominant factors by multiple wind farms at different locations[J].High Voltage Engineering,2016,42(7):2259-2265.
[25]董晓亮,田旭,张勇,等.沽源风电场串补输电系统次同步谐振典型事件及影响因素分析[J].高电压技术,2017,43(1):321-328.DONG Xiaoliang,TIAN Xu,ZHANG Yong,et al.Practical SSR incidence and influencing factor analysis of DFIG-based series-compensated trans-mission system in Guyuan farms[J].High Voltage Engineering,2017,43(1):321-328.
[2]程时杰,曹一家,江全元.电力系统次同步振荡的理论与方法[M].北京:科学出版社,2009.CHENG Shijie,CAO Yijia,JIANG Quanyuan.Theory and method of subsynchronous oscillation in power system[M].Beijing:Science Press,2009.
[3]张建军.谐波电压传递特性分析研究[J].高压电器,2016,52(10):130-134.ZHANG Jianjun.Study of transfer characteristics of harmonic voltage[J].High Voltage Apparatus,2016,52(10):130-134.
[4]陈帆,赵婉雯.特高压直流无功控制电压选择优化研究[J].高压电器,2016,52(11):29-33.CHEN Fan,ZHAO Wanwen.Optimization of voltage selection for UHVDC reactive power control[J].High Voltage Apparatus,2016,52(11):29-33.
[5]乔和,关紫微,颜廷武,等.SVG的自适应控制方法研究[J].高压电器,2017,53(1):169-174.QIAO He,GUAN Ziwei,YAN Tingwu,et al.Research on the adaptive control method of SVG[J].High Voltage Apparatus,2017,53(1):169-174.
[6]李晖,马喜平,董开松,等.大电网末端风力发电系统故障穿越关键技术[J].高压电器,2017,53(1):192-196.LI Hui,MA Xiping,DONG Kaisong,et al.Research on fault ride through for wind power system in the terminal of the power grid system[J].High Voltage Apparatus,2017,53(1):192-196.
[7]肖湘宁,罗超,廖坤玉.新能源电力系统次同步振荡问题研究综述[J].电工技术学报,2017,32(6):85-97.XIAO Xiangning,LUO Chao,LIAO Kunyu.Review of the research on subsynchronous oscillation issues in electric power system with renewable energy sources[J].Transactions of China Electrotechnical Society,2017,32(6):85-97.
[8]王伟胜,张冲,何国庆,等.大规模风电场并网系统次同步振荡研究综述[J].电网技术,2017,41(4):1050-1060.WANG Weisheng,ZHANG Chong,HE Guoqing,et al.Overview of research on subsynchronous oscillations in large-scale wind farm integrated system[J].Power System Technology,2017,41(4):1050-1060.
[9]李明节,于钊,许涛,等.新能源并网系统引发的复杂振荡问题及其对策研究[J].电网技术,2017,41(4):1035-1042.LI Mingjie,YU Zhao,XU Tao,et al.Study of complex oscillation caused by renewable energy integration and its solution[J].Power System Technology,2017,41(4):1035-1042.
[10]丁国栋.双馈风电机组次同步振荡研究[D].上海:上海机电学院,2015.DING Guodong.The study on subsynchronous oscillations of doubly fed wind turbine[D].Shanghai:Shanghai Dian Ji University,2015.
[11]栗然,卢云,刘会兰,等.双馈风电场经串补并网引起次同步振荡机理分析[J].电网技术,2013,37(11):3073-3079.LI Ran,LU Yun,LIU Huilan,et al.Mechanism analysis on subsynchronous oscillation caused by grid-integration of doubly fed wind power generation system via series compensation[J].Power System Technology,2013,37(11):3073-3079.
[12]李辉,陈耀君,李洋,等.双馈风电场并网对汽轮发电机次同步振荡的影响[J].电机与控制学报,2015,19(6):47-54.LI Hui,CHEN Yaojun,LI Yang,et al.Impact of DFIG-based wind farms interconnected to power grid on subsynchronous oscillation of turbogenerator[J].Electric Machines and Control,2015,19(6):47-54.
[13]李辉,陈宏文,杨超,等.含双馈风电场的电力系统低频振荡模态分析[J].中国电机工程学报,2013,33(28):17-24.LI Hui,CHEN Hongwen,YANG Chao,et al.Modal analysis of the low-frequency oscillation of power systems with DFIG-based wind farms[J].Proceedings of the CSEE,2013,33(28):17-24.
[14]张艳富,肖军,朱会芳.风力发电机多台机组同时脱网故障的研究与探索[J].风能产业,2016(10):47-51.ZHANG Yanfu,XIAO Jun,ZHU Huifang.Research and exploration on the fault of multi unit of wind turbine[J].Wind Power Industry,2016(10):47-51.
[15]任勇,黄永宁,高峰.宁东直流近区新能源诱发次同步振荡风险评估[J].宁夏电力,2016(1):53-58.REN Yong,HUANG Yongning,GAO Feng.Risk assessment on new energy induced sub-synchronous oscillation in eastern Ningxia DC nearby area of Ningxia power grid[J].Ningxia Electric Power,2016(1):53-58.
[16]谢小荣,刘华坤,贺静波,等.直驱风机风电场与交流电网相互作用引发次同步振荡的机理与特性分析[J].中国电机工程学报,2016,36(9):2366-2372.XIE Xiaorong,LIU Huakun,HE Jingbo,et al.Mechanism and characteristics of subsynchronous oscillation caused by the iteraction between full-converter wind turbines and AC systems[J].Proceedings of the CSEE,2016,36(9):2366-2372.
[17]WALKER D N,BOWLER C E,JACKSON R L,et al.Results of sub-synchronous resonance test at mohave[J].IEEETransactions on Power Apparatus and Systems,1975,94(5):1878-1889.
[18]IEEE Sub-synchronous Resonance Group.Reader’s guide to sub-synchronous resonance[J].IEEE Trans.on Power Systems,1992,7(1):150-157.
[19]IEEE Sub-synchronous Resonance Group.Terms,definitions andsymbolsforsub-synchronousoscillations[J].IEEETrans.onPowerApparatusandSystems,1985,104(6):1326-1333.
[20]常喜强,赵明君,梁静,等.基于风电仿真模型等值的相关讨论[J].四川电力技术,2014(4):31-35.CHANG Xiqiang,ZHAO Mingjun,LIANG Jing,et al.Based on the equivalence of wind power simulation model[J].Sichuan Electric Power Technology,2014(4):31-35.
[21]武家辉,王海云,王维庆,等.混合三端直流输电系统在风火打捆并网中的应用及其控制策略[J].电力系统保护与控制,2016,44(2):49-55.WU Jiahui,WANG Haiyun,WANG Weiqing,et al.Abundling system of wind-coal power plants and its control strategies based on hybrid MTDC transmissions[J].Power System Protection and Control,2016,44(2):49-55.
[22]刘为杰,姜建国.直驱永磁同步风电机组次同步振荡建模与分析[J].电机与控制应用,2017(1):97-103.LIU Weijie,JIANG Jianguo.Modeling and analysis for direct-drive permanent magnet synchronous wind turbine generator in sub-synchronous oscillation[J].Electric Machines&Control Application,2017(1):97-103.
[23]FAN Lingling,ZHU Chanxia,MIAO Zhixin,et al.Modal analysis of a DFIG-based wind farm interfaced with a series compensated network[J].IEEE Transactions on Energy Conversion,2011,26(4):1010-1020.
[24]董晓亮,侯金鸣,田旭,等.不同位置子群风电场主导因素变化对次同步谐振特性影响程度比较[J].高电压技术,2016,42(7):2259-2265.DONG Xiaoliang,HOU Jinming,TIAN Xu,et al.Comparison of the impact level on subsynchronous resonance characteristics of dominant factors by multiple wind farms at different locations[J].High Voltage Engineering,2016,42(7):2259-2265.
[25]董晓亮,田旭,张勇,等.沽源风电场串补输电系统次同步谐振典型事件及影响因素分析[J].高电压技术,2017,43(1):321-328.DONG Xiaoliang,TIAN Xu,ZHANG Yong,et al.Practical SSR incidence and influencing factor analysis of DFIG-based series-compensated trans-mission system in Guyuan farms[J].High Voltage Engineering,2017,43(1):321-328.
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