| 引用本文: | 吴忠强,宋明厚,付立元.多机电力系统间接自适应模糊分散 H∞ 控制研究[J].电力自动化设备,2013,33(1): |
| WU Zhongqiang,SONG Minghou,FU Liyuan.Indirect，adaptive，fuzzy and distributed H∞ control for multi-machine power system[J].Electric Power Automation Equipment,2013,33(1): |
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| 摘要: |
| 针对多机电力系统励磁控制模型，考虑到系统的多变量、强耦合非线性等特性，提出了基于模糊逼近的间接自适应模糊分散H∞跟踪控制方案。该方案通过构建模糊自适应系统来逼近未知函数，然后设计H∞补偿器来抵消外部扰动和模糊逼近误差，从而实现了对多机电力系统的稳定性控制并且具有H∞性能。仿真结果表明，当多机电力系统发生三相可恢复故障和三相不可恢复故障时，发电机的转子运行角趋于某一固定值，相对转速和跟踪误差都趋于零。所提方案与电力系统稳定器（PSS）方案对比可知，PSS方案虽然能使系统稳定，但是其超调量大、过渡时间长，而所提方案不仅可以使系统在故障之后迅速稳定，而且超调量更小。 |
| 关键词: 电力系统 自适应控制 模糊逻辑系统 模糊控制 稳定性 误差分析 |
| DOI： |
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| 基金项目:河北省自然科学基金资助项目（Ｆ２０１２２０３０８８） |
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| Indirect，adaptive，fuzzy and distributed H∞ control for multi-machine power system |
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WU Zhongqiang, SONG Minghou, FU Liyuan
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Key Lab of Industrial Computer Control Engineering of Hebei Province，Yanshan University，Qinhuangdao 066004，China
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| Abstract: |
| Based on the multi-machine excitation control model and the multi-variable，strong-coupling and nonlinear system characteristics，an indirect，adaptive，fuzzy and distributed H∞ tracking control scheme is proposed based on the fuzzy approximating，which constructs the fuzzy adaptive system to approximate the unknown function and designs the H∞ compensator to eliminate the external disturbance and the error of fuzzy approximating. The stable control of multi-machine power system is thus realized with H∞ property. Simulative results show that，the operational angle of generator rotor tends to a stable value and both the relative angular velocity and the tracking error tend to zero when three-phase recoverable or unrecoverable faults occurs in multi-machine power system. Compared with PSS scheme，the proposed scheme has shorter settling time and smaller overshoot. |
| Key words: electric power systems adaptive control fuzzy logic system fuzzy control stability error analysis |
