摘要
根据汽轮发电机组轴系的简化模型 ,采用 Lyapunov直接法对该非线性系统的平衡位置稳定性进行了定性分析 ,在参数取于一定范围内时 ,确定了平衡点的位置 ,对稳定平衡点 ,用 Lyapunov函数对稳定域进行了估计。这里提出的分析方法是直接针对非线性系统的 ,因而避免了线性化方法所产生的误差。
A novel method is proposed to analyze the stability of turbine-generator including the shaft torsional oscillations.Using the Lyapunov direct method. the analysis of equilibrium points is undertaken on the basis of the original nonlineargenerator shaft model. Therefore, the error caused by linearization is avoided. Also, the stable operation (comparativelyreserved) region of the generator is obtained. A simple example is used to show the effectiveness of the proposed method toanalyze the generator shaft torsional oscillation and to evaluate the stable margin of the oscillation.This project is supported by National Key Basic Research Special Fund of China (No. G1998020319) and 'PanDeng'Project of the National gth #5 Year's Plan' (No. PD9521907).
出处
《电力系统自动化》
EI
CSCD
北大核心
2000年第8期6-9,共4页
Automation of Electric Power Systems
基金
国家重点基础研究专项经费资助项目!(G1 9980 2 0 31 9)
国家"九五"攀登项目!(PD95 2 1 90 7)
关键词
轴系扭振
平衡点
稳定域
汽轮发电机组
shaft torsional oscillation: equilibrium point: stable region
