Mode identification-based model-free adaptive predictive damping control method for power system with wind farm considering communication delays

IF 5 2区 工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC International Journal of Electrical Power & Energy Systems Pub Date : 2024-11-01 DOI:10.1016/j.ijepes.2024.110303
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Abstract

With the widespread utilization of large-scale power electronics and the integration of wind power into power grid, the problem of low-frequency oscillations in new power systems become increasingly critical. In this paper, a mode identification-based model-free adaptive predictive control (MI-MFAPC) method with full-form dynamic linearization (FFDL) is proposed to design wide-area damping controller (WADC) to suppress multi-modal oscillations. Modal identification method is adopted in MFAPC-WADC to screen the controller input signals with high observability and low coupling, and the controller parameters are set separately for different oscillation modes. The improved control and adaptive law are proposed to rigorously guarantees the asymptotic convergence of the control error to zero under steady-state conditions. The proposed method integrates with the rolling optimization and introduces the future time input and output data, so it has strong robustness for the time-delay system. Simulation results show that MI-MFAPC-WADC greatly improves the dynamic quality and system stability, and the multiple oscillation modes are suppressed efficiently. Considering communication delays, the proposed method without the adaptive delay compensator even obtains better damping performance than the existed method with the adaptive delay compensator.
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基于模式识别的无模型自适应预测阻尼控制方法,用于考虑通信延迟的带风电场的电力系统
随着大规模电力电子技术的广泛应用以及风电并入电网,新电力系统中的低频振荡问题变得日益严峻。本文提出了一种基于模态识别的无模型自适应预测控制(MI-MFAPC)方法和全形式动态线性化(FFDL)方法,用于设计抑制多模态振荡的广域阻尼控制器(WADC)。MFAPC-WADC 采用模态识别方法筛选出高可观测性和低耦合性的控制器输入信号,并针对不同振荡模式分别设置控制器参数。提出了改进的控制和自适应定律,严格保证了稳态条件下控制误差向零的渐近收敛。所提出的方法与滚动优化相结合,并引入了未来时间输入和输出数据,因此对时延系统具有很强的鲁棒性。仿真结果表明,MI-MFAPC-WADC 极大地提高了动态质量和系统稳定性,并有效抑制了多重振荡模式。考虑到通信延迟,所提出的不带自适应延迟补偿器的方法甚至比现有的带自适应延迟补偿器的方法获得了更好的阻尼性能。
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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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