Power system transient stability assessment based on MVEE and LSPTSVM

被引：0
|
作者：
Wang L. [1 ]
Han D. [2 ]
Wang C. [2 ]
Wei J. [3 ]
Li B. [4 ]
机构：
[1] State Grid Liaoning Electric Power Supply Co., Ltd., Shenyang
[2] School of Electrical Engineering, Northeast Electric Power University, Jilin
[3] Northeast China Branch, Huadian Electric Power Research Institute Co., Ltd., Shenyang
[4] Electric Power Research Institute of State Grid Liaoning Electric Power Co., Ltd., Shenyang
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2020年 / 48卷 / 17期
关键词：
Least square projection twin support vector machine; Minimum volume enclosing ellipsoid; Pattern recognition; Transient stability assessment;
D O I：
10.19783/j.cnki.pspc.191244
中图分类号：
学科分类号：
摘要：
Given the difficulties of constructing the feature set and the slow training speed of the evaluation model when using the pattern recognition method for power system transient stability assessment, a power system transient stability assessment method based on Minimum Volume Enclosing Ellipsoid (MVEE) and Least Square Projection Twin Support Vector Machine (LSPTSVM) is proposed. First, according to the MVEE theory, the system trajectory information is optimized to determine the minimum volume closure ellipsoid with all trajectory information in high dimensional space. We construct the input feature set using the physical properties of the minimum volume closure ellipsoid. This can effectively achieve feature set dimension reduction. Secondly, a regularization term is introduced into the objective function of the traditional projection twin support vector machine, and the internal constraints of the evaluation model are improved. This can improve the solution speed of the model and meet the computational efficiency requirements of large-scale power systems. Finally, the validity and feasibility of the proposed method are verified by the case analysis of IEEE-39 and IEEE-145 node systems. © 2020, Power System Protection and Control Press. All right reserved.
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页码：45 / 54
页数：9
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