LMI-based robust wide-area time-delay damping control of SSSC-type FACTS device for stability enhancement of power system

2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI:10.1109/EEEIC.2010.5489929

Yong Li, C. Rehtanz, Dechang Yang, U. Häger, Fang Liu, L. Luo, Jiazhu Xu

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引用次数: 5

Abstract

This paper presents a linear matrix inequality (LMI) method for the design of the wide-area time-delay damping (WATDD) controller of static synchronous series compensator (SSSC)-type flexible ac transmission system (FACTS) device to enhance the power stability of the interconnected power systems. Firstly, in order to reveal the single-input multi-output (SIMO) characteristic of the open-loop power system with SSSC-type FACTS device, the prediction error estimation (PEE) algorithm based system identification method is applied to fit a special SIMO linear model. Then, based on the robust control theory and LMI method, the identified linear model is formulated as the standard control problem with the time-delay of the input signals of the WATDD controller, and combined with the designed state observer for the input state variables of the WATDD controller, the control parameters are optimized by the LMI iterate solution algorithm. Finally, the nonlinear simulation on the typical 2-area 4-machine system installed with SSSC-type WATDD controller is performed to verify the LMI-based design method and the proposed SSSC-type WATDD controller.

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基于lmi的sssc型FACTS鲁棒广域时延阻尼控制，增强电力系统稳定性

本文提出了一种线性矩阵不等式(LMI)方法，用于设计静态同步串联补偿器(SSSC)型柔性交流输电系统(FACTS)装置的广域时延阻尼(WATDD)控制器，以提高互联电力系统的电力稳定性。首先，为了揭示具有sssc型FACTS器件的开环电力系统的单输入多输出(SIMO)特性，采用基于预测误差估计(PEE)算法的系统辨识方法拟合了一个特殊的SIMO线性模型;然后，基于鲁棒控制理论和LMI方法，将辨识出的线性模型作为WATDD控制器输入信号具有时滞的标准控制问题，并结合所设计的WATDD控制器输入状态变量的状态观测器，采用LMI迭代求解算法对控制参数进行优化。最后，对安装了sssc型WATDD控制器的典型2区4机系统进行了非线性仿真，验证了基于lmi的设计方法和所提出的sssc型WATDD控制器。

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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2010 9th International Conference on Environment and Electrical Engineering

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