Data-Based Voltage Analysis of Power Systems via Delay Embedding and Extended Dynamic Mode Decompositiond

被引：2

作者：

Susuki, Yoshihiko ^{[1
]}

Sako, Kyoichi ^{[2
]}

机构：

[1] Osaka Prefecture Univ, Dept Elect & Informat Syst, Naka Ku, 1-1 Gakuen Cho, Sakai, Osaka 5998531, Japan

[2] Kyoto Univ, Dept Elect Engn, Kyoto 6158510, Japan

来源：

IFAC PAPERSONLINE | 2018年 / 51卷 / 28期

关键词：

Power systems; Operators; Data processing; Voltage; Koopman operator; Delay embedding; Extended dynamic mode decomposition; SPECTRAL PROPERTIES; KOOPMAN OPERATOR; APPROXIMATION;

D O I：

10.1016/j.ifacol.2018.11.705

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Data-based assessment of dynamic performances has attracted a lot of interest in the modern power system with high-accurate measurement technologies such as Synchrophasor. In this paper, we report the research effort to do this for voltage dynamics in a rudimentary model of power systems. We propose to combine the so-called delay embedding with the extended dynamic mode decomposition, which is a technique for approximating the Koopman operator directly from time-series data. This combination enables us to approximate spectral properties of the Koopman operator through voltage measurement of a single bus. The spectral properties clarify local information on the voltage dynamics such as frequency/damping in transient responses and global one such as the flow structure of the underlying mathematical model. (C) 2018, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

引用

页码：221 / 226

页数：6

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