Fast analysis method of power system mode resonance based on power iteration

被引：0
|
作者：
Li Z. [1 ]
Hu H. [1 ]
Zhou Y. [1 ]
He Z. [1 ]
机构：
[1] School of Electrical Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan Province
来源：
Hu, Haitao (hht@swjtu.edu.cn) | 2017年 / Power System Technology Press卷 / 41期
基金：
中国国家自然科学基金;
关键词：
Critical mode; Fast modal analysis; Harmonic resonance; Power iteration;
D O I：
10.13335/j.1000-3673.pst.2016.0597
中图分类号：
学科分类号：
摘要：
Among the harmonic resonance analysis methods, resonance mode assessment can reveal lot of useful information of the resonance, such as its frequency, amplitude, critical node or bus participation, etc. As a result, this method is widely used and studied. However, calculation speed of this method is not satisfactory in computing eigenvalue- composition process at all frequency intervals. According to the definition of critical mode, namely the largest modal impedance at any frequency, it needs to calculate the largest eigenvalue of inverse matrix of network admittance matrix at each frequency interval. Power iteration is adopted to calculate the largest eigenvalue and corresponding eigenvector. Iterative times are reduced with new iteration starting vector selection method and iteration termination criteria. Furthermore, unnecessary calculation is further reduced by modifying calculation step selection method in prioritization scheme. Calculation speed increases remarkably with above methods synthetically. Simulation results on IEEE 14-bus test system illustrate high effectiveness of the proposed method, with an improvement of more than 90% calculation speed compared with conventional modal analysis method. © 2017, Power System Technology Press. All right reserved.
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收藏
页码：1218 / 1224
页数：6
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