摘要
为了研究含感应电机的风电场对电力系统稳定性的影响,建立了考虑感应电机机械暂态过程的单机无穷大系统的小扰动稳定分析的线性化数学模型。利用简化RX迭代算法进行潮流计算得到稳态值,并分析了补偿电容、线路阻抗变化对系统特征值的影响,结果表明上述参数变化对系统的小扰动稳定性有较大影响。利用Matlab建模仿真,对系统在不同参数条件下进行了时域分析,验证了理论分析的正确性,为风力发电并网安全稳定运行提供了可借鉴的理论依据。
To research effect of wind farm with induction machine on the stability of power system, a linear mathematical model for small signal stability analysis of single machine infinite system considering induction machine mechanical transient process is presented. A power flow computation based on simplified RX iteration arithmetic is＇ performed to obtain stable-state value. The effects of the change of compensation capacitor and line impedance on system eigenvalue are analyzed. Results show the above parameters variation can greatly affect system small signal stability. A simulation model is built by Matlab and time domain analysis are performed under different parameter conditions, and correctness oftheoretical analysis is proved. Itprovides a theoretical reference for stable andsafe operation of grid-connected wind farm.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2011年第7期14-19,共6页
Power System Protection and Control
关键词
单机无穷大
风电场
机械暂态
小扰动分析
RX迭代算法
single machine infinite system
wind farm
mechanical transient
small signal analysis
RX iteration arithmetic
