|
|
|
| Effects of parameter variation on a Pelton hydropower station system’s shafting vibration |
| XU Beibei1,2, CHEN Diyi1,2, LI Huanhuan1,2, YAN Donglin1,2 |
1.Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A & F University, Shaanxi Yangling 712100,China;
2.Institute of Water Resources and Hydropower Research, Northwest A&F University, Yangling 712100, China |
|
|
|
Abstract To deeply study effects of structural parameters variation on shafting vibration of a Pelton hydropower station system, a nonlinear mathematical model with fractional order damping force was established for the system considering coupling among multi-subsystem including pressure penstock, governor, and hydro-turbine generator unit.Effects of excitation current, upper guide bearing stiffness, lower guide bearing one, water guide bearing one and its rotating speed on the system’s service performance parameters, such as, shaft offset, generator rotating speed, etc.were studied under damping force with different fractional orders.The results showed that nonlinear dynamic evolution processes revealed by the system’s service performance parameters have a unity under excitation current variation; the system dynamic instability modes are different under the variation of bearing stiffness parameters; the system shafting vibration amplitude has jump phenomenon with increase in rotating speed; the study results provides a theoretical basis for further revealing fault diagnosis mechanism of Pelton hydropower station systems.
|
|
Received: 24 May 2018
Published: 28 November 2019
|
|
|
|
[1] P.雷诺兹. 欧洲各国及俄罗斯的水电站现代化改造[J]. 水利水电快报, 2016, 37(8): 14-16.
P. Lei Nuozi. Modernization of Hydropower stations in Europe and Russia[J]. Express Water Resources & Hydropower Information, 2016, 37(8): 14-16.
[2] 沈祖饴. 水轮机调节[C]. 中国水利水电出版社, 1998.
Shen Zuyi. Hydraulic turbine governing system[C]. China WaterPower Press, 1998.
[3] 宋志强. 水电站机组及厂房结构耦合振动特性研究[D]. 大连理工大学, 2009. 3
Song Zhiqiang. Research on coupling vibration characteristics of generator and hydropower house[D]. Dalian University of Technology, 2009.
[4] MA Zhenyue, Song Zhiqiang. Nonlinear Dynamic characteristic analysis of the shaft system in water turbine generator set[J]. Chinese Journal of Mechanical Engineering, 2009, 22(1): 124-131.
[5] 曾云, 张立翔, 郭亚昆, 等. 共用管段的水力解耦及非线性水轮机模型[J]. 中国电机工程学报, 2012, 32(14): 103-108.
Zeng Yun, Zhang Lixiang, Guo Yakun, et al. Hydraulic Decoupling and Nonlinear Hydro Turbine Model With Sharing Common Conduit[J]. Proceedings of the CSEE, 2012, 32(14): 103-108.
[6] Wang L, Zhaov J, Liu D C, et al. Governor running and digital deflector control of Pelton turbine with multiple needles for power system studies[J]. IET Generation Transmission & Distribution, 2017, 11(13): 3278-3286.
[7] 朱迪, 肖若富, 陶然, 刘伟超. 水泵水轮机泵工况非设计工况流态与压力脉动分析[J]. 农业机械学报, 2016, 47(12): 77-84.
Zhu Di, Xiao Ruofu, Tao Ran, et al. Analysis of Flow regime and Pressure Pulsations under Off-design Condition in Pump Mode of Pump-turbine[J]. Transactions of the Chinese Society for Agricultural Machinery, 2016, 47(12): 77-84.
[8] 周昆雄, 张立翔, 曾云. 机电耦联条件下水力发电系统暂态分析[J]. 水利学报, 2015, 46(9): 1118-1127.
Zhou Kunxiong, Zhang Lixiang, Zeng Yun. A study on the dynamic compressive behavior of pre-damaged concrete[J]. Journal of Hhydraulic Engineering, 2015, 46(9): 1118-1127.
[9] 王波, 刘献礼, 刘晶石, 等. 冲击式水轮机水斗高应力区结构优化及加工[J]. 机械工程学报, 2015, 51(21): 148-155.
Wang Bo, Liu Xianli, Liu JingShi, et al. Structural Optimization and Manufacturing for Region of High Stress of Pelton Turbine [J]. Journal of Mechanical Engineering, 2015, 51(21): 148-155.
[10] Zeng Yun, Zhang Lixiang, Guo Yakun, et al. Hamiltonian stabilization additional L-2 adaptive control and its application to hydro turbine generating sets[J]. International Journal of Control Automation and Systems, 2015, 13(4), 867-876.
[11] Xu Beibei, Chen Diyi, Zhang Hao, et al. Dynamic analysis and modeling of a novel fractional-order hydro-turbine-generator unit[J]. Nonlinear Dynamics, 2015, 81(3): 1263-1274.
[12] 陈育. 冲击式水轮机射流及其干涉动态过程的数值模拟研究[J]. 华南理工大学, 2011.
Chen Yu. Numerical simulating the transient process of jet and interference in pelton bucket[D]. South China University of Tchnology, 2011.
[13] 吴嵌嵌, 张雷克, 马震岳. 水电站水机电-结构系统动力耦联模型研究及数值模拟[J]. 振动与冲击, 2018, 36(16): 1-10.
Wu Qianqian, Zhang Leike, Ma Zhenyue. Model analysis and numerical simulation of a dynamic coupled hydraulic-mechanical-electric-structural system of a hydropower station[J]. Journal of Vibration and Shock, 2018, 36(16): 1-10.
[14] 白冰, 张立翔. 随机水力激励下机组轴系的动力响应[J]. 排灌机械工程学报, 2017, 35(05): 398-403.
Bai Bing, Zhang Lixiang. Dynamic response of hydro-turbine set shaft system under stochastic hydraulic excitation[J]. Journal of Dranage and Irrigation Machinery Engineering, 2017, 35(05): 398-403.
[15] 张雷克. 水轮发电机组轴系非线性动力特性分析[D]. 大连理工大学, 2014.
Zhang Leike. Nonlinear dynamic analysis of shaft system for hydroelectric generating set [D]. Dalian University of Technology, 2014.
[16] 曹永. 冲击式水轮机转轮的流固耦合及振动研究[D]. 西华大学, 2015.
Cao Yong. The study of fluid-structure coupling and vibration of pelton turbine runner[D]. Xihua University, 2015.
[17] 宋志强, 刘云贺. 基于正交多项式分解的水轮机竖向动荷载识别[J]. 水利学报, 2016, 47(11): 1448-1455.
Song Zhiqiang, Liu Yunhe. Vertical dynamic load identification of hydraulic turbine based on orthogonal polynomial decomposition[J]. Journal of Hydraulic Engineering, 2016, 47(11): 1448-1455.
[18] 孙文涛, 刘涤尘, 赵洁, 等. 适用于电力系统稳定分析的冲击式水轮机调节系统动态模型[J]. 电网技术, 2014, 38(8): 2071-2075.
Sun Wentao, Liu Dichen, Zhao Jie, et al. Dynamic models of pelton turbine and speed governing system suitable for power system stability analysis[J]. Power System Technology, 2014, 38(8): 2071-2075.
[19] 孔达, 李忠刚, 焦映厚, 等. 水轮机转子-密封系统模型及其非线性动力学特性分析[J]. 水利学报, 2013, 44(4): 462-469.
Kong Da, Li Zhonggang, Jiao Yinghou, et al. Models of the rotor-seal system for hydraulic turbine and its nonlinear dynamics analysis[J]. Journal of Hydraulic Engineering, 2013, 44(4): 462-469.
[20] Liu F, Agrawal O P, Momani S, et al. Fractional differential equations: an introduction to fractional derivatives, fractional differential equations, to methods of their solution and some of their applications[J]. Academic Press, 1999, 91(3): 427-436.
[21] Oldham K B, Spanier J. The fractional calculus[C]. Mathematical Gazette, 1974, 56: 396-400.
[22] Cao J Y, Syta A, Litak G, et al. Regular and chaotic vibration in a piezoelectric energy harvester with fractional damping [J]. European Physical Journal Plus, 2015, 130(6): 103.
[23] Yan Z, Wang W, Liu X B. Analysis of a quantic system with fractional damping in the presence of vibrational resonance [J]. Applied Mathematics and Computation, 2018, 321: 780-793.
[24] 刘铖, 蔡国伟, 杨德友, 等. 双馈感应风机分数阶自抗扰广域阻尼控制器设计[J]. 高电压技术, 2016, 42(9): 2800-2807.
Liu Cheng, Cai Guowei, Yang Deyou, et al. Wide-area Damping Controller Design of Doubly Fed Induction Generators Based on Fractional Order Auto Disturbance Rejection Controller[J]. High Voltage Engineering, 2016, 42(9): 2800-2807
[25] 凌代俭. 水轮机调节系统分岔与混沌特性的研究[D]. 河海大学, 2007, pp. 28.
Ling Daijian. Study of Bifurcation and chaos characteristics for the hydraulic turbine regulating system [D]. Hohai University, 2007, pp. 28.
[26] 赵显忠, 程云山. 冶勒水电站水斗式水轮机组的主要参数[J]. 水利水电科技进展, 2006, 05: 59-72.
Zhao Xianzhong, Cheng Yunshan. Main parameters of scoop-type water-turbine generator set at Yele Hydropower plant[J]. Advances in Science and Technology of Water Resources, 2006, 26(5): 59-61.
[27] 王海旭. 冶勒水电站120MW水斗式水轮发电机组[J]. 水力发电, 2004, 30(11): 35-37.
Wang Haixu. 120 MW Pelton hydro-generating unit for Yele hydropower project [J]. Water Power, 2004, 30(11): 35-37.
|
|
|
|
