| 引用本文: | 李啸骢,陈登义.发电机励磁与SVC的改进自适应反步无源协调控制[J].电力自动化设备,2018,(12): |
| LI Xiaocong,CHEN Dengyi.Improved adaptive backstepping passive coordinated control for generator excitation and SVC[J].Electric Power Automation Equipment,2018,(12): |
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| 摘要: |
| 考虑了阻尼系数的不确定性，提出了一种改进自适应反步无源协调控制策略，设计了发电机励磁与静止无功补偿器(SVC)的非线性协调控制器。采用浸入与不变(I & I)自适应控制设计了阻尼系数的自适应估计律，提高了控制器的自适应能力。基于反步法逐步递推，设计了SVC的控制律，并结合无源性理论，得到了发电机励磁的控制律。在反步法设计过程中，为了减小“微分爆炸”，将虚拟控制量的导数看作不确定项，并引入非线性阻尼算法对其进行处理。仿真结果表明，所设计的协调控制器明显地改善了电力系统的稳定性，并且具备较强的自适应性和鲁棒性。 |
| 关键词: 励磁控制 静止无功补偿器 浸入与不变自适应控制 反步法 无源协调控制 非线性阻尼算法 |
| DOI：10.16081/j.issn.1006-6047.2018.12.011 |
| 分类号:TM761 |
| 基金项目:国家自然科学基金资助项目(51267001)；广西科学研究与技术开发计划项目(14122006-29)；广西自然科学基金资助项目(2014GXNSFAA118338) |
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| Improved adaptive backstepping passive coordinated control for generator excitation and SVC |
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LI Xiaocong, CHEN Dengyi
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Guangxi Key Laboratory of Power System Optimization and Energy Technology, Guangxi University, Nanning 530004, China
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| Abstract: |
| An improved adaptive backstepping passive coordinated control strategy is proposed to deal with the uncertain damping coefficients. A nonlinear coordinated controller for generator excitation and SVC(Static Var Compensator) is designed to improve its adaptability. The adaptive estimation law of damping coefficients is designed by using I & I(Immersion and Invariant) adaptive control to improve the adaptive ability of the controller. The control law of SVC is designed using the backstepping recursion, and the control law of generator excitation is hereby obtained based on the passivity theory. In the backstepping design, the derivative of the virtual control variable is considered to be uncertain, and the nonlinear damping algorithm is introduced to reduce the “differential explosion”. Simulative results indicate that the designed coordinated controller significantly improves the power system stability and exhibits satisfactory adaptability and robustness. |
| Key words: excitation control SVC immersion and invariant adaptive control backstepping method passive coordinated control nonlinear damping algorithm |
