溷流式水轮机调节系统建模与非线性动力学分析.pdf

第 32 卷 第 32 期 中 国 电 机 工 程 学 报 Vol.32 No.32 Nov.15, 2012 116 2012 年 11 月 15 日 Proceedings of the CSEE ©2012 Chin.Soc.for Elec.Eng. 0258-8013 (2012) 32-0116-08 TV 734 TK 730 A 470 40 文章编号： 中图分类号： ； 文献标志码： 学科分类号：  混流式水轮机调节系统建模与非线性动力学分析 陈帝伊，郑栋，马孝义，郑小贺 (西北农林科技大学水利水电科学研究院，陕西省 杨凌市 712100) Nonlinear Dynamical Analysis and Mathematical Model of Hydro-turbine Governing Systems CHEN Diyi, ZHENG Dong, MA Xiaoyi, ZHENG Xiaohe (Institute of Water Resources and Hydropower Research, North West AF University, Yangling 712100, Shaanxi Province, China) ABSTRACT: In order to study the nonlinear dynamical 用百分比远低于发达国家[1-2] 。近几年，随着水电事 behavior of hydro-turbine governing system, a new dynamical 业高速发展，高水头、大水电站逐渐增多，这对水 model for the hydro-turbine governing system with elastic 电站系统的安全、稳定运行提出了更高的要求。 water hammer-impact and the second order model of generator 水轮机调节系统是集水力、机械、电气为一体 was established, which is based on the model of simple surge 的综合控制系统，调节对象为复杂的非线性、非最 shaft. By virtue of bifurcation diagram, Poincare maps, the power spectrum diagram, the time domain diagram, the orbits 小相位系统，其自身也是一个典型的非线性复杂系 diagram and the spectrum diagram, the nonlinear dynamical 统[3] 。其运行状况直接影响水电机组乃至整个电网 responses of generator’s relative deviation of rotational seed 系统的安全。水轮机调节系统的稳定性分析已经成 and the water pressure at the entrance of surge shaft were 为水力机械系统的一研究热点[4-7] 。 analyzed. Through the analysis，the adjustable range of the 长久以来，水轮机调节系统的动态稳定分析及 speed governor that ensure governing systems stable operation