Active power oscillation suppression method of large hydropower unit with damping sil

ZHANG Haiku, CHEN Qijuan, ZHENG Yang, GENG Qinghua, WANG Liang

Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (17) : 183-188.

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (17) : 183-188.

Active power oscillation suppression method of large hydropower unit with damping sil

  • ZHANG Haiku1,2, CHEN Qijuan1, ZHENG Yang1, GENG Qinghua2,3, WANG Liang2
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Abstract

The stability of power system is related to the security of power grid.Here, based on the principle of adding non-pressure open channel being able to increase hydraulic damping, taking a large hydropower unit as the study object, aiming at the problem of active power oscillation caused by pressure fluctuation in tailrace channel, the damping trapezoidal sill model was established.The standard k-ε model and VOF multiphase flow model were adopted, and the software FLUENT was used to do simulation calculation, and the simulation results were applied in the large hydropower unit.The field tests and analysis were performed.The results showed that the proposed suppression method can significantly reduce amplitude of active power oscillation, and meet requirements of power grid for stable operation of large hydropower unit; the study results have engineering guiding value to solve the active power oscillation problem in power system.

Key words

hydropower unit / tailrace channel / active power oscillation / damping sill

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ZHANG Haiku, CHEN Qijuan, ZHENG Yang, GENG Qinghua, WANG Liang. Active power oscillation suppression method of large hydropower unit with damping sil[J]. Journal of Vibration and Shock, 2021, 40(17): 183-188

References

[1]薛安成,王嘉伟,刘晓博,等.电力系统超低频频率振荡机理分析与抑制研究现状与展望[J].中国电机工程学报,2021,41(2):533-567.
XUE Ancheng, WANG Jiawei, LIU Xiaobo, et al.Survey and prospect of ultra-low frequency oscillation mechanism analysis and suppression in power system [J].Proceedings of the CSEE,
2021,41(2):533-567.
[2]王思良,冯喆,魏步云.一起大型水轮发电机组功率低频振荡事件分析[J].水电与新能源,2017(5): 54-57.
WANG Siliang,FENG Zhe,WEI Buyun.Analysis of a low-frequency power oscillation event in large-scale hydro-turbine generator unit [J].Hydropower and New Energy, 2017(5): 54-57.
[3]钟国翔,韦笃取,张波.永磁同步电机系统、网络混沌振荡同步中断分析与控制[J].振动与冲击, 2020, 39(7): 8-13.
ZHONG Guoxiang, WEI Duqu, ZHANG Bo.Analysis and control for chaotic oscillation synchronization interruption of permanent magnet synchronous motor systems and networks[J].Journal of Vibration and Shock, 2020, 39(7): 8-13.
[4]付超,柳勇军,涂亮,等.云南电网与南方电网主网异步联网系统试验分析[J].南方电网技术,2016,10(7):1-5.
FU Chao,LIU Yongjun,TU Liang,et al.Experiment and analysis on asynchronously interconnected system of Yunnan Power Grid and main grid of China Southern Power Grid[J].Southern Power System Technology,2016,10(7):1-5. 
[5]LIU M,  SUN  Z Y, LI M, et al.Application of improved wavelet denoising method in low-frequency oscillation analysis of power system[J].Journal of Physics.Conference Series, 2020, 1633(1): 012115.
[6]FU Yiwei, CHEN Lei, YU Zhe, et al.Data-driven low frequency oscillation mode identification and preventive control strategy based on gradient descent[J]  Electric Power Systems Research, 2020, 189: 106544.
[7]PICO H V,MCCALLEY J D,ANGEL A,et al.Analysis of very low frequency oscillations in hydro-dominant power systems using multi-unit modeling[J].IEEE Transactions on Power Systems,2012,27(4):1906-1915.
[8]RIMOROV D, KAMWA I, JOOS G. Quasi-steady-state approach for analysis of frequency oscillations and damping controller design[J].IEEE Transactions on Power Systems,2016,31(4):3212-3220.
[9]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.
[10]路晓敏,陈磊,陈亦平,等.电力系统一次调频过程的超低频振荡分析[J].电力系统自动化,2017,41(16):64-70.
LU Xiaomin, CHEN  Lei, CHEN  Yiping, et al. Ultra-low-frequency  oscillation  of  power  system primary  frequency  regulation[J].Automation  of  Electric Power Systems,2017,41(16):64-70.
[11]岳雷,薛安成,李志强,等.水轮发电机调速系统对超低频振荡的影响及模型适用性分析[J].中国电机工程学报,2019,39(1):227-
235. 
YUE  Lei,XUE Ancheng,LI  Zhiqiang,et  al.Effects  on extra-low frequency oscillation caused by hydro generator governor  system  and  model  suitability analysis[J].Proceedings  of  the  CSEE,2019,39(1):227-235.
[12]纪可可,徐亮,汪志华.二滩水电站3 号机组低频振荡原因分析[J].人民长江,2016,47(21):103-105.
JI Keke,XU Liang,WANG Zhihua.Cause analysis of low frequency oscillation of unit 3 in Ertan Hydropower Station [J].Yangtze River,2016,47(21):103-105.
[13]周雪漪.计算水力学理论与应用[M].北京:清华大学出版社,1995.
[14]ANSYS FLUENT培训教材[M].北京:安世亚太科技(北京)有限公司, 2015.
[15]武汉大学水利水电学院水力学流体力学教研室.水力计算手册[M].北京: 中国水利水电出版社, 2006.
[16]HANIF CHAUDHRY M. 实用水力瞬变过程[M].北京: 中国水利水电出版社, 2015.
 
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