Mitigating SSR of Series-Compensated DFIG Wind Farms Based on Cascaded High-Gain State and Perturbation Observers

IF 5.9 2区 工程技术 Q2 ENERGY & FUELS
Xuelei Feng;Tianhao Wen;Xiaohan Liu;Yang Liu;Q. H. Wu
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引用次数: 0

Abstract

This paper proposes a novel cascaded high-gain state and perturbation observer (CHGSPO)-based feedback linearization control (FLC) strategy for mitigating the sub-synchronous resonance (SSR) caused by the interactions between the series capacitor and doubly-fed induction generator-based wind farms (DFIGWFs). The CHGSPO is designed to estimate both the state and nonlinear perturbations of the series-compensated DFIGWF system. The nonlinear perturbation contains the disturbance originated from SSR, nonlinearities and uncertainties of the system model. The estimated state and perturbations are used by the FLC to eliminate the nonlinearities of the system and realize complete decoupling control of the DFIGWF. Additionally, the FLC effectively suppresses oscillatory signals detected by the CHGSPO. The proposed CHGSPO-based FLC exhibits remarkable robustness against uncertainties and external disturbances. The results of modal analysis and time domain simulations demonstrate the effectiveness of the proposed control strategy in SSR mitigation of the series-compensated DFIGWF system.
基于级联高增益状态和扰动观测器的串联补偿DFIG风电场SSR缓解
本文提出了一种新的基于级联高增益状态和摄动观测器(CHGSPO)的反馈线性化控制(FLC)策略,用于缓解串联电容器与双馈感应发电机风电场(DFIGWFs)之间相互作用引起的次同步谐振(SSR)。CHGSPO被设计用于估计串联补偿DFIGWF系统的状态和非线性扰动。非线性扰动包括由SSR引起的扰动、系统模型的非线性和不确定性。FLC利用估计的状态和扰动消除了系统的非线性,实现了DFIGWF的完全解耦控制。此外,FLC有效地抑制了CHGSPO检测到的振荡信号。所提出的基于chgspo的FLC对不确定性和外部干扰具有显著的鲁棒性。模态分析和时域仿真结果验证了所提控制策略对串联补偿DFIGWF系统的SSR抑制效果。
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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来源期刊
CiteScore
11.80
自引率
12.70%
发文量
389
审稿时长
26 weeks
期刊介绍: The CSEE Journal of Power and Energy Systems (JPES) is an international bimonthly journal published by the Chinese Society for Electrical Engineering (CSEE) in collaboration with CEPRI (China Electric Power Research Institute) and IEEE (The Institute of Electrical and Electronics Engineers) Inc. Indexed by SCI, Scopus, INSPEC, CSAD (Chinese Science Abstracts Database), DOAJ, and ProQuest, it serves as a platform for reporting cutting-edge theories, methods, technologies, and applications shaping the development of power systems in energy transition. The journal offers authors an international platform to enhance the reach and impact of their contributions.
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