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Speed-up of power system transient stability analysis by modal method

模态法加速电力系统暂态稳定分析

基本信息

批准号：
18560284
负责人：
UCHIDA Naoyuki
金额：
$ 2.17万
依托单位：
Tokyo University of Science
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560284/
关键词：
power system transient stability numerical integration eigen analysis method mode decomposition S method Lanczos method inverse iteration method 逆分復法

项目摘要

1. The improvement of the mode analysis technique : The technique for efficiently obtaining important modes of the linear differential equation used for small signal stability analysis in the electric power system (eigenvalue and eigenvector) was developed. Analytical accuracy of the eigenvalue has been greatly improved by improving this and using a reverse-iteration method together with the Lanczos method, though the analysis of the mode of S method part uses the Lanczos method. Moreover, an individual division system was resolved in the mode by dividing the system to speed up the analysis of the eigenvalue in a large-scale system and the method of obtaining the eigenvalue in high-speed and high accuracy was developed.2. The development of high-speed numerical integration : Great speed-up of the integration calculation in the transition stability calculation was achieved. The eigenvalue was calculated in each step of integration to attempt the improvement of the calculation accuracy i … More n a high-speed calculation by a partial linear approximation, the effect of the accuracy improvement was examined, and an excellent result was obtained. Moreover, an experimental program of speed-up Y method was made about the main model calculation part of the transition stability level analysis program (Y method). The function of the developed program was verified by IEEJ standard model WEST10., and the calculation speed was measured. The time interval of the calculation was able to be made ten times or more, and five times or more speed-up were achieved compared with the conventional method, though the error margin occurred a little in this technique.3. The development of simple method for transient stability: The energy function method that was a simple method for transient stability was improved The oscillating curve in the electric power system after the disturbance were calculated in high accuracy by using a partial linear approximation method. The potential energy of the system is calculated according to this approximation oscillating curve. The simulation was done in one generator-infinite bus system and the critical fault clearing time were calculated with high accuracy. Less

1.模式分析技术的改进：发展了电力系统小干扰稳定性分析中线性微分方程组的重要模式(特征值和特征向量)的高效获取技术。对此进行了改进，并将逆迭代法与Lanczos法结合使用，大大提高了特征值的分析精度，而S法部分的振型分析采用了Lanczos法。此外，为了加快大系统特征值分析的速度，在该模式下通过分割系统来分解单个分割系统，并提出了高速、高精度地获取特征值的方法。高速数值积分的发展：实现了过渡稳定计算中积分计算的大幅提速。在积分的每一步都计算特征值，试图提高计算精度I…在部分线性近似的高速计算中，检验了精度提高的效果，得到了很好的结果。此外，针对过渡稳定水平分析程序(Y法)的主要模型计算部分，编制了加速Y法试验程序。利用IEEJ标准模型WEST10对所开发程序的功能进行了验证，并对计算速度进行了测量。该技术的计算时间间隔可达到常规方法的十倍或十倍以上，速度提高五倍或五倍以上，但误差较小。暂态稳定简化方法的发展：改进了暂态稳定的简单方法--能量函数法，利用部分线性逼近法高精度地计算了扰动后电力系统的振荡曲线。根据这一近似振荡曲线，计算了系统的势能。在一个发电机-无穷大母线系统中进行了仿真，得到了高精度的临界故障切除时间。较少