考虑非线性影响的dfig - wts主导电力系统的跨时间尺度动力学相互作用分析

IF 8.7 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Power Systems Pub Date : 2026-01-01 Epub Date: 2025-08-11 DOI:10.1109/TPWRS.2025.3597444

Jiabing Hu;Zebin Liu;Yingbiao Li;Jianbo Guo

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引用次数: 0

摘要

随着以双馈感应发电机（DFIG）风力发电机组为代表的风力发电的不断深入，电力系统动力学呈现出多时间尺度的特征。此外，系统强烈的非线性特性导致了动态过程中多时间尺度动力学之间的跨时间尺度耦合现象。然而，以往的研究通常采用线性方法来评价平衡点邻域的稳定性，而忽略了非线性效应引起的跨时间尺度的特性。本文在dfig - wts占主导地位的电力系统中，采用基于二阶泰勒展开的范式方法（NFM）解决了这一问题。随后，揭示了跨时间尺度的耦合模式和现象。进一步分析了耦合动力学的频率特性和阻尼特性。最后，在实时LAB（RT-LAB）中发现并验证了这两种跨时间尺度的现象。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Cross-Timescale Dynamics Interaction Analysis of DFIG-WTs-Dominated Power Systems Considering Nonlinear Effects

With the increasing penetration of wind power represented by Doubly Fed Induction Generator (DFIG) based wind turbines (WTs), the power system dynamics exhibit characteristics of multi-timescale. Moreover, the strong nonlinear characteristics of the system lead to cross-timescale coupled phenomena between multi-timescale dynamics in dynamic processes. However, previous studies typically employ linear methods to evaluate the stability of the equilibrium point neighborhood while ignoring the characteristics of cross-timescale caused by nonlinear effects. This paper addresses this gap by employing the normal form method (NFM) based on second-order Taylor expansions in the DFIG-WTs-dominated power systems. Subsequently, cross-timescale coupled modes and phenomena have been revealed. Furthermore, the frequency characteristics and damping characteristics of the coupled dynamics are analyzed. Finally, both cross-timescale phenomena are discovered and validated in real-time LAB(RT-LAB ).

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来源期刊

IEEE Transactions on Power Systems 工程技术-工程：电子与电气

CiteScore

15.80

自引率

7.60%

发文量

696

审稿时长

3 months

期刊介绍： The scope of IEEE Transactions on Power Systems covers the education, analysis, operation, planning, and economics of electric generation, transmission, and distribution systems for general industrial, commercial, public, and domestic consumption, including the interaction with multi-energy carriers. The focus of this transactions is the power system from a systems viewpoint instead of components of the system. It has five (5) key areas within its scope with several technical topics within each area. These areas are: (1) Power Engineering Education, (2) Power System Analysis, Computing, and Economics, (3) Power System Dynamic Performance, (4) Power System Operations, and (5) Power System Planning and Implementation.