| 基于扩张状态观测器的多机系统非线性协调控制 |
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| 引用本文： | 余涛,沈善德,李东海,朱守真.基于扩张状态观测器的多机系统非线性协调控制[J].清华大学学报(自然科学版),2004,44(1):97-101. |
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| 作者姓名： | 余涛 沈善德 李东海 朱守真 |
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| 作者单位： | 1. 清华大学,电机工程与应用电子技术系,北京,100084
2. 清华大学,热能工程系,北京,100084 |
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| 基金项目： | 国家自然科学基金资助项目(50277021) |
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| 摘 要： | 针对精确反馈线性化(EFL)的非线性控制器鲁棒性差、结构复杂的缺点,提出了基于扩张状态观测器(ESO)的多机电力系统汽门和励磁的非线性分散协调控制策略。同时给出了基于EFL的分散协调控制策略。数字仿真表明,当标称参数与电网实际一致时,基于ESO的非线性控制器能达到EFL控制器的非线性控制效果,但基于ESO的非线性控制器设计无需电网的有关参数,在标称参数与实际电网参数有误差时,基于ESO的非线性控制器较EFL具有更佳的鲁棒性和适应性。
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| 关 键 词： | 电力系统分析 分散控制 协调控制 扩张状态观测器 非线性不确定系统 |
| 文章编号： | 1000-0054(2004)01-0097-05 |
| 修稿时间： | 2003年1月8日 |
ESO-based decentralized nonlinear coordinated controller of multimachine power systems |
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| YU Tao,SHEN Shande,LI Donghai,ZHU Shouzhen.ESO-based decentralized nonlinear coordinated controller of multimachine power systems[J].Journal of Tsinghua University(Science and Technology),2004,44(1):97-101. |
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| Authors: | YU Tao SHEN Shande LI Donghai ZHU Shouzhen |
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| Institution: | YU Tao~1,SHEN Shande~1,LI Donghai~2,ZHU Shouzhen~1 |
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| Abstract: | An extended state observer (ESO) based decentralized nonlinear coordinated control for a turbine governor and excitation system in multimachine power systems was developed to replace less robust and very complex exact feedback linearization (EFL) based controllers. The ESO-based controller performance was compared with that of an exact feedback linearization-based nonlinear controller. The simulation results demonstrate that if the plant model is well defined, the control performance of the ESO-based controller is similar to the EFL-based controller. However, if the plant model is uncertain the robustness and the adaptability of the ESO controller is better than that of the EFL controller. |
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| Keywords: | multimachine power system analysis decentralized control coordinated control extend state observer nonlinear uncertain systems |
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