基于李雅普诺夫理论的UPFC功率流控制及直流稳压改进

René Fochie Kuate, G. Kenné, A. M. Fombu, A. Cheukem, H. Fotsin
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引用次数: 0

摘要

本文基于李雅普诺夫直接法设计了一种改进的鲁棒UPFC控制器,增强了电力系统的潮流和直流稳压性。所提出的控制器具有鲁棒性,在系统参数不确定性和干扰存在未知界的情况下也能产生最优响应。在线识别不确定性和干扰的大小,然后使用所获得的信息来调整控制器。在昆都尔电力系统上对所提出的控制器进行了仿真,并与具有积分控制的状态反馈控制器(即状态反馈PI控制器)进行了比较。对比结果表明,所提出的控制器在处理不确定性和干扰方面具有令人满意的性能。
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Improved UPFC Controller Based on Lyapunov Theory for Power Flow Control and DC Voltage Regulation
In this paper, an improve robust UPFC controller is designed based on Lyapunov direct method which enhances the power flow and DC voltage regulation of a power system. The proposed controller is robust and produces an optimal response in the presence of unknown bounds of system parameter uncertainty and disturbances. The magnitudes of the uncertainty and disturbances are identified online and the information obtained is then used to tune the controller. The performance of the proposed controller is simulated on a Kundur power system and compared with a state feedback controller with integral control, called state feedback PI controller. Comparative results indicate satisfactory performance of the proposed controller in dealing with the uncertainties and disturbances considered.
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