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首页> 外文期刊>Power Systems, IEEE Transactions on >Robust Adaptive Backstepping Excitation Controller Design for Higher-Order Models of Synchronous Generators in Multimachine Power Systems
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Robust Adaptive Backstepping Excitation Controller Design for Higher-Order Models of Synchronous Generators in Multimachine Power Systems

机译:多机电力系统同步发电机高阶模型的鲁棒自适应Backstepping励磁控制器设计

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摘要

A robust adaptive backstepping approach is considered in this paper to design excitation controllers for synchronous generators in power systems. The higher-order dynamical models of synchronous generators are considered to design the proposed excitation controller. Since the parameters appearing within these dynamical models (especially the parameters related to the synchronous generators and excitation systems) significantly affect the stability of power systems, these parameters are considered as completely unknown during the proposed controller design process. The parameter adaptation laws are used in this paper to estimate the unknown parameters while maintaining the overall stability of power systems. The effects of external disturbances are also considered in this paper to incorporate the model accuracies and measurement noises, which in turn ensure the robustness of the proposed control scheme. The control Lyapunov functions are used to analyze the stability of the whole system through the negative semi-definiteness of their derivatives. Simulation studies are carried out on an IEEE standard power system, the New England 10-machine 39-bus power system, to further validate the performance of the proposed scheme under different operating conditions. Comparisons are also made with different existing nonlinear excitation controllers sliding mode controller and robust partial feedback linearizing controller, which are designed based on the higher order models as well as with the robust adaptive controller, which is designed based on the traditional one-axis model. Simulations results, under different operating conditions, demonstrate the superiority of the proposed control scheme over all these existing nonlinear excitation controllers.
机译:本文考虑了一种鲁棒的自适应反推方法来设计电力系统同步发电机的励磁控制器。为了设计所提出的励磁控制器,考虑了同步发电机的高阶动力学模型。由于出现在这些动力学模型中的参数(特别是与同步发电机和励磁系统有关的参数)会显着影响电力系统的稳定性,因此在建议的控制器设计过程中,这些参数被认为是完全未知的。本文使用参数自适应定律来估计未知参数,同时保持电力系统的整体稳定性。本文还考虑了外部干扰的影响,以纳入模型精度和测量噪声,从而确保所提出控制方案的鲁棒性。控制Lyapunov函数用于通过导数的负半定性来分析整个系统的稳定性。在IEEE标准电源系统(新英格兰10机39总线电源系统)上进行了仿真研究,以进一步验证所提出方案在不同操作条件下的性能。还比较了现有的不同非线性激励控制器,滑模控制器和鲁棒的部分反馈线性化控制器,它们是基于高阶模型设计的,而鲁棒的自适应控制器是基于传统的单轴模型设计的。在不同的运行条件下的仿真结果表明,所提出的控制方案优于所有这些现有的非线性励磁控制器。

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