| 基于ESO-backstepping的多机电力系统非线性鲁棒励磁解耦控制 |
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| 引用本文： | 陈峰,李天云.基于ESO-backstepping的多机电力系统非线性鲁棒励磁解耦控制[J].智能电网,2013,1(1):44-48. |
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| 作者姓名： | 陈峰 李天云 |
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| 作者单位： | 广东电网公司惠州供电局;东北电力大学电气工程学院 |
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| 摘 要： | 通过构造扩张状态观测器(extended state observer，ESO)对发电机励磁系统模型误差和不确定外扰进行动态补偿，并运用反步法对补偿后的模型设计非线性解耦控制律。由于该方法对系统模型的非线性部分有选择地利用ESO进行动态补偿，既避免了运用反步法设计时自适应参数的引入，又能充分利用系统的特性，减轻ESO的估计负担，有效地兼顾了控制器鲁棒性及控制精度这两方面的要求。仿真表明：该方法鲁棒性强，参数易于选取，与比例–积分–微分(proportion-integration- differentiation，PID)+电力系统稳定(power system stabilizer，PSS)控制器励磁控制器相比较，具有更为优秀的动态品质，方法简单有效。
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| 关 键 词： | 反步法 扩张状态观测器 鲁棒性 非线性解耦控制 多机电力系统 |
Nonlinear Robust Excitation Decoupling Control of Multi-machine Power System Based on the ESO-backstepping Method |
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| CHEN Feng and LI Tianyun.Nonlinear Robust Excitation Decoupling Control of Multi-machine Power System Based on the ESO-backstepping Method[J].Smart Grid,2013,1(1):44-48. |
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| Authors: | CHEN Feng and LI Tianyun |
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| Affiliation: | Huizhou Power Supply Bureau, Guangdong Power Grid Corporation;School of Electrical Engineering and Automation, Northeast Dianli University |
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| Abstract: | The extended state observer (ESO) was used to estimate the model error and the uncertain external disturbance, and eliminate them by feedback, then design the nonlinear decoupling control law for the excitation system model of compensation. The design procedure, based on the ESO-backstepping method, which is dynamically eliminating the nonlinear part of the system selectively, not only avoids introducing the adaptive parameter in the backstepping method, but also reduces the calculating load of the extended state observer. As a result, the controller has both high accuracy and strong robustness. The simulation result shows that this method is simple and effective, and the excitation controller has stronger robustness and superior dynamic performance than the proportion-integration-differentiation (PID) and power system stabilizer (PSS) excitation controller. |
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| Keywords: | backstepping method extended state observer robust nonlinear decoupling control multi-machine power system |
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