SUB-SYNCHRONOUS OSCILLATION OF DIRECT DRIVE PMSG BASED WIND FARM UNDER LOW OPERATING CONDITIONS CONNECTED TO WEAK GRID

Hu Wenbo; Jia Qi; Liu Kan; Wang Junxi; An Jun; Yan Gangui

doi:10.19912/j.0254-0096.tynxb.2020-0748

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (4) : 341-350. DOI: 10.19912/j.0254-0096.tynxb.2020-0748

Topics on Key Technologies for Safety of Electrochemical Energy Storage Systems and Echelon Utilization of Decommissioned Power Batteries

SUB-SYNCHRONOUS OSCILLATION OF DIRECT DRIVE PMSG BASED WIND FARM UNDER LOW OPERATING CONDITIONS CONNECTED TO WEAK GRID

Hu Wenbo, Jia Qi, Liu Kan, Wang Junxi, An Jun, Yan Gangui

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Abstract

Aiming at the sub-synchronous oscillation（SSO） problem that direct-drive permanent magnetic synchronous generator（PMSG） based wind farms under low operated conditions connects to weak grid, the linearization model of direct drive PMSG based wind farm and turbogenerator connecting to grid is established. The eigenvalue analysis is used to identify the oscillation modes existing in the system, and the influence of strength of grid, current inner loop control parameters and number of wind turbines on the SSO is analyzed. The dynamic interaction mechanism between wind farm and turbogenerator is analyzed based on net damping analysis. The research results show that： improper setting of current inner loop control parameters is the dominant factor to induce SSO of wind farm, which belongs to the oscillation of electrical system. With the decrease of power grid strength and the current inner loop control parameters and the increase of wind turbine number, the damping of the system is weakened and the system is prone to SSO. And this oscillation does not excite the shaft torsional vibration of turbogenerator. In EMTDC/PSCAD, the time domain simulation model of wind farm connected to the weak grid is built, which verifies the validity and effectiveness of the theoretical analysis.

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direct drive PMSG based wind farm / turbogenerator / sub-synchronous oscillation / eigenvalue analysis / dynamic interaction

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Hu Wenbo, Jia Qi, Liu Kan, Wang Junxi, An Jun, Yan Gangui. SUB-SYNCHRONOUS OSCILLATION OF DIRECT DRIVE PMSG BASED WIND FARM UNDER LOW OPERATING CONDITIONS CONNECTED TO WEAK GRID[J]. Acta Energiae Solaris Sinica. 2022, 43(4): 341-350 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0748

References

[1] 国家能源局.国家能源局发布1-7月份全国电力工业统计数据[EB/OL]. http://www.nea.gov.cn/2021-08/19/c_1310136083.htm.
National Energy Administration(NEA).released statistics on the national electric power industry from January to July[EB/OL]. http://www.nea.gov.cn/2021-08/19/c_1310136083.htm.
[2] 袁小明, 程时杰, 胡家兵.电力电子化电力系统多尺度电压功角动态稳定问题[J]. 中国电机工程学报, 2016, 36(19): 5145-5154.
YUAN X M, CHENG S J, HU J B.Multi-time scale voltage and power angle dynamics in power electronics dominated large power systems[J]. Proceedings of the CSEE, 2016, 36(19): 5145-5154.
[3] 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 X N, LUO C, LIAO K Y.Review of the research on subsynchronous oscillation issues in electric power system with enewable energy sources[J]. Transactions of China Electrotechnical Society, 2017, 32(6): 85-97.
[4] 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 M J, YU Z, XU T, et al. Study of complex oscillation caused by renewable energy integration and its solution[J]. Power system technology, 2017, 41(4): 1035-1042.
[5] 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 W S, ZHANG C, HE G Q, et al. Overview of research on subsynchronous oscillations in large-scale wind farm integrated system[J]. Power system technology, 2017, 41(4): 1050-1060.
[6] 李胜, 袁小明, 黄晨辉.基于交叉耦合锁相环的多频带滤波器: 一种检测系统多时间尺度振荡的自适应滤波器[J]. 中国电机工程学报, 2020, 40(16): 5282-5291.
LI S, YUAN X M, HUANG C H.A multi-band filter based on cross-coupled PLL structure: An adaptive filter for fast detection of multi-timescale oscillations in power systems[J]. Proceedings of the CSEE, 2020, 40(16): 5282-5291.
[7] 黄云辉, 翟雪冰, 刘栋, 等. 弱电网下风力发电机组并网变流器直流电压稳定性机理分析[J]. 高电压技术, 2017, 43(9): 3127-3136.
HUANG Y H, ZHAI X B, LIU D, et al. Stability analysis on DC-link voltage of wind turbine grid-connected converter as integrated to weak grid[J]. High voltage engineering, 2017, 43(9): 3127-3136.
[8] LI Y, FAN L L, MIAO Z X.Wind in weak grids: Low-frequency oscillations, subsynchronous oscillations, and torsional interactions[J]. IEEE transactions on power systems, 2020, 35(1): 109-118.
[9] HUANG Y H, YUAN X M, HU J B, et al. Modeling of VSC connected to weak grid for stability analysis of DC-link voltage control[J]. IEEE journal of emerging and selected topics in power electronics, 2015, 3(4): 1193-1204.
[10] 袁豪.风电机组直流电压控制尺度的幅相运动方程建模及其稳定性分析应用[D]. 武汉: 华中科技大学, 2018.
YUAN H.Modeling of wind turbines based on amplitude-phase motion equation method in DC-link voltage control timescale and its applications in power system stability analysis[D]. Wuhan: Huazhong University of Science and Technology, 2018.
[11] LIU H K, XIE X R, HE J B, et al. Sub-synchronous interaction between direct-drive PMSG based wind farms and weak AC networks[J]. IEEE transactions on power systems, 2017, 32(6): 4708-4720.
[12] 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 X R, LIU H K, HE J B, et al. Mechanism and characteristics of subsynchronous oscillation caused by the interaction between full-converter wind turbines and AC systems[J]. Proceedings of the CSEE, 2016, 36(9): 2366-2372.
[13] 万强, 贾祺, 严干贵.弱交流系统下直驱风电场次同步振荡特性分析[J]. 可再生能源, 2019, 37(8): 1171-1178.
WAN Q, JIA Q, YAN G G.Analysis of SSO characteristics of D-PMSGs based wind farm under weak AC system[J]. Renewable energy sources, 2019, 37(8): 1171-1178.
[14] ZHAO M Q, YUAN X M, HU J B, et al. Voltage dynamics of current control time-scale in a VSC-connected weak grid[J]. IEEE transactions on power system, 2016, 31(4): 2925-2937.
[15] YAN Y B, YUAN X M, HU J B.Stationary-frame modeling of VSC based on current-balancing driven internal voltage motion for current control timescale dynamic analysis[J]. Energies, 2018, 11(2): 374-389.
[16] 张天翼, 杜文娟, 陈晨, 等. 弱连接条件下并网直驱风电场引发无串补电力系统次同步扭振机理研究[EB/OL]. https://doi.org/10.13334/j.0258-8013.pcsee.191013.
ZHANG T Y, DU W J, CHEN C, et al. A mechanism investigation on SSTOs in power systems without series compensated lines induced by PMSG wind farms under the condition of weak grid connection[EB/OL]. https://doi.org/10.13334/j.0258-8013.pcsee.191013.
[17] 王旭斌, 杜文娟, 王海风.直驱风电并网系统中锁相环引起次同步振荡的开环模式谐振机理分析[J]. 中国电机工程学报, 2018, 38(7): 1935-1950,2209.
WANG X B, DU W J, WANG H F.Mechanism analysis of open-loop modal resonance on subsynchronous oscillations caused by PLL in power systems with integrated PMSGs[J]. Proceedings of the CSEE, 2018, 38(7): 1935-1950,2209.
[18] ALAWASA K M, MOHAMED Y A I, XU W.Modeling, analysis, and suppression of the impact of full-scale wind-power converters on subsynchronous damping[J]. IEEE systems journal, 2013, 7(4): 700-712.
[19] 严干贵, 魏治成, 穆钢, 等. 直驱永磁同步风电机组的动态建模与运行控制[J]. 电力系统及其自动化学报, 2009, 21(6): 34-39.
YAN G G, WEI Z C, MU G, et al. Dynamic modeling and control of directly-driven permanent magnet synchronous generator wind turbine[J]. Proceedings of the CSU-EPSA, 2009, 21(6): 34-39.
[20] IEEE SSR Task Force.First benchmark model for computer simulation of sub-synchronous resonance[J]. IEEE transactions on power apparatus and systems, 1977, PAS-96(5): 1565-1572.