Triple-branch structure design and parameter optimization for supplementary damping controller of DFIG to suppress angular oscillation and reduce phase-locking error of PLL

IF 5 2区 工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Shenghu Li, Nan Qi
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引用次数: 0

Abstract

The supplementary damping controller (SDC) in the doubly fed induction generator (DFIG) is to suppress the angular oscillations among synchronous generators (SGs). Due to the phase-locking error, the coupling between the SDC and the phase-locked loop (PLL) weakens the suppression effect. This paper proposes a novel triple-branch SDC (TB-SDC) and two-stage optimization to reduce the phase locking error and suppress the angular oscillation. The originalities are, (1) An analytical model to describe the coupling between the SDC and the PLL considering the phase locking error is newly proposed. (2) A triple-branch SDC with an additional input from the PLL is newly proposed to suppress the angular oscillation while reducing the phase-locking error. (3) Based on 2-norm of the trajectory sensitivities, two evaluation indices are newly defined to quantify the impact of the TB-SDC parameters on the oscillation and the phase locking error, and select the critical parameters. (4) A two-stage optimization model is proposed to adjust the parameters of the TB-SDC, where the 1st step is to reduce the phase locking error and decide the input signals of the SDC-P and the SDC-Q, and the 2nd step is to improve the suppression effect and reduce the phase locking error. The simulation results verify the impact of the coupling, and validate the effectiveness and adaptability of the TB-SDC and optimization. © 2017 Elsevier Inc. All rights reserved.
用于 DFIG 辅助阻尼控制器的三分支结构设计和参数优化,以抑制角振荡并降低 PLL 锁相误差
双馈异步发电机(DFIG)中的辅助阻尼控制器(SDC)用于抑制同步发电机(SG)之间的角度振荡。由于锁相误差,SDC 与锁相环 (PLL) 之间的耦合会削弱抑制效果。本文提出了一种新型三分支 SDC(TB-SDC)和两级优化技术,以减少锁相误差并抑制角度振荡。其独创性在于:(1) 新提出了一个考虑锁相误差的分析模型来描述 SDC 与 PLL 之间的耦合。(2) 新提出了一种带有 PLL 额外输入的三分支 SDC,以在减少锁相误差的同时抑制角度振荡。(3) 基于轨迹敏感度的 2 次正态,新定义了两个评价指标,以量化 TB-SDC 参数对振荡和锁相误差的影响,并选择关键参数。(4) 提出了调整 TB-SDC 参数的两阶段优化模型,第一步是降低锁相误差并决定 SDC-P 和 SDC-Q 的输入信号,第二步是提高抑制效果并降低锁相误差。仿真结果验证了耦合的影响,并验证了 TB-SDC 和优化的有效性和适应性。© 2017 Elsevier Inc.保留所有权利。
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
International Journal of Electrical Power & Energy Systems
International Journal of Electrical Power & Energy Systems 工程技术-工程:电子与电气
CiteScore
12.10
自引率
17.30%
发文量
1022
审稿时长
51 days
期刊介绍: The journal covers theoretical developments in electrical power and energy systems and their applications. The coverage embraces: generation and network planning; reliability; long and short term operation; expert systems; neural networks; object oriented systems; system control centres; database and information systems; stock and parameter estimation; system security and adequacy; network theory, modelling and computation; small and large system dynamics; dynamic model identification; on-line control including load and switching control; protection; distribution systems; energy economics; impact of non-conventional systems; and man-machine interfaces. As well as original research papers, the journal publishes short contributions, book reviews and conference reports. All papers are peer-reviewed by at least two referees.
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