| 引用本文: | 廖清芬,刘涤尘,党杰,应黎明,崔雪,潘晓杰.励磁系统模型和参数对低频振荡特征值的灵敏度分析[J].电力自动化设备,2009,(3): |
| .Sensitivity analysis of low frequency oscillation eigenvalue to excitation system model and parameter[J].Electric Power Automation Equipment,2009,(3): |
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| 摘要: |
| 研究了国内广泛使用的4类发电机励磁系统模型与电力系统分析综合程序(PSASP)中自带模型的关系;基于小干扰动态稳定理论,把典型的几类励磁系统模型和单机无穷大系统Phillips-Heffron模型相结合,推导了带有完整的励磁系统参数,并可直接用于电力系统低频振荡分析的详细Phillips-Heffron模型.结合特征值对参数的灵敏度和特征值对矩阵元素的灵敏度,推导了低频振荡模式的阻尼对励磁系统参数的阻尼灵敏度,并进一步采用阻尼灵敏度的分析方法,分析归纳出励磁系统不同的模型和参数对电力系统低频振荡的影响,并将其推广到多机系统.仿真结果表明,不同的励磁系统参数对低频振荡的阻尼灵敏度大小不同,以调压器并联反馈环节的放大系数和时间常数影响最大,对于没有励磁机环节的励磁模型,以串联校正环节的放大倍数的阻尼灵敏度最大. |
| 关键词: 发电机 励磁系统 电网 低频振荡 特征值灵敏度 |
| DOI： |
| 分类号:TM712 |
| 基金项目: |
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| Sensitivity analysis of low frequency oscillation eigenvalue to excitation system model and parameter |
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LIAO Qingfen1 LIU Dichen1 DANG Jie2 YING Liming1 CUI Xue1 PAN Xiaojie2
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| Abstract: |
| The relationship between the excitation system models widely used for the domestic generators and the models supplied by PSASP(Power System Analysis Software Package) is studied. Based on the small signal stability theory,the typical excitation system model is connected to the Phillips-Heffron model of single-machine infinite system to derive the detailed Phillips-Heffron model with complete excitation system parameters for low-frequency oscillation analysis. The sensitivity of eigenvalue to parameters is c... |
| Key words: generator excitation system power grid low frequency oscillation eigenvalue sensitivity |
