Experimental evaluation of nonlinear robust control for SMES to improve the transient stability of power systems
Experimental evaluation of nonlinear robust control for SMES to improve the transient stability of power systems
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DOI：
10.1109/tec.2004.827703
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发表时间：
2004-11
影响因子：
4.9
通讯作者：
Feng Liu;S. Mei;D. Xia;Yongjian Ma;Xiaohua Jiang;Qiang Lu
中科院分区：
文献类型：
--
作者：
Feng Liu;S. Mei;D. Xia;Yongjian Ma;Xiaohua Jiang;Qiang Lu
本文提出了一种新的方法和相应的实验的非线性鲁棒控制的超导磁储能（SMES）单元，以提高电力系统的暂态稳定性。基于SMES样机试验结果，采用了一种新的SMES动态模型，并将其转化为单机系统，简化了系统的动态分析和控制器设计。然后，应用反馈线性化方法和线性H/sub /spl infin//控制理论，设计了一种新型的单机无穷大（OMIB）电力系统SMES非线性鲁棒控制器。为了证实所提出的控制策略的积极影响，实验进行了实验室设置的SMES比较，与传统的比例积分（PI）控制器。实验结果表明，所提出的非线性鲁棒控制器比传统的PI控制器具有更优良的性能，以提高电力系统的暂态稳定性。
This paper presents a new approach and corresponding experiments for the nonlinear robust control of a superconducting magnetic energy storage (SMES) unit to improve the transient stability of power systems. Based on the result of SMES prototype experience, a new dynamic model with disturbances of SMES is adopted, and transferred to the per unit system for simplifying the dynamic analysis and controller design. Then, feedback linearization scheme and linear H/sub /spl infin// control theory are applied to design a novel SMES nonlinear robust controller in a one-machine infinite bus (OMIB) power system. In order to confirm such positive effects of the proposed control strategy, experiments are carried on a laboratory setup of SMES comparing that with a conventional proportional-integral (PI) controller. The results of the experiments demonstrate that the proposed nonlinear robust controller has more excellent performance to improve the transient stability of power systems than that of conventional PI controllers.