现代电力2026，Vol.43Issue(2)：201-212,12.DOI:10.19725/j.cnki.1007-2322.2024.0030
基于改进鲁棒主成分分析的风火打捆系统次同步振荡溯源方法
Subsynchronous Oscillation Localization Method for Wind-thermal Bundled System Under Improved Robust Principal Component Analysis
摘要
Abstract
The integration of large-scale wind farms into the grid leads to subsynchronous oscillation events,which poses a consistent threat to the safety and stability of the power system.The accurate location of the oscillation source plays an important role in mitigating oscillations.Therefore,in this paper we introduce a synchrophasor data-driven method for the localization of forced subsynchronous oscillation.Firstly,we derive the analytical expression for the oscillation within thermal power units caused by subsynchronous harmonic disturbance in the wind power grid-connected system.Subsequently,the low-rank characteristic matrices are constructed for forced subsynchronous oscillation components.On this basis,the sparse weights of self-augmentation and robust principal component analysis are combined to extract the main features of forced subsynchronous oscillation and achieve accurate localization in the wind-thermal bundled system.Finally,a three-machine system and an IEEE 39-node system are constructed to verify the improved robust principal component analysis on PSCAD/EMTDC.The simulation results demonstrate that the improved robust principal component analysis can intuitively locate the source of forced subsynchronous oscillation in the absence of grid topology information.关键词
鲁棒主成分分析/强迫振荡/次同步振荡/风火打捆系统Key words
robust principal component analysis/forced oscillation/subsynchronous oscillation/wind-thermal bundled system分类
信息技术与安全科学引用本文复制引用
徐衍会,朱爱九,梁阳豆,凌武能,熊莉,梁振成,罗翠云..基于改进鲁棒主成分分析的风火打捆系统次同步振荡溯源方法[J].现代电力,2026,43(2):201-212,12.基金项目
广西电网公司科技项目(046000KK52222042).Project Supported by Science and Technology Project of Guangxi Power Grid Corporation(046000KK52222042). （046000KK52222042）
