| 引用本文: | 陆超,金小明,李鹏,吴小辰.基于MIMO辨识的复杂系统多控制器最优设计[J].电力自动化设备,2009,(3): |
| .Optimal design of multiple controllers based on MIMO identification for large scale power system[J].Electric Power Automation Equipment,2009,(3): |
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| 摘要: |
| 由于互联电网低频振荡的全局性质,各种阻尼控制器必须协调设计,但对于实际大规模电网,作为设计基础的系统模型难以获取,提出了一种基于辨识的最优协调设计方案.通过注入的带宽信号(0.1～3 Hz,已包含整个机电振荡模式频率范围)激发动态稳定控制相关的系统特性,采用预测误差方法(PEM)辨识得到复杂系统的多输入多输出(MIMO)降阶模型.通过引入额外的状态量和输出量改进传统的线性最优控制设计方法,使其控制器结构中可包含领先一滞后环节,而不仅仅是比例环节,并给出了扩展后的系统方程及控制器参数计算方法.上述方案通过2条直流线路的调制控制器设计进行了验证,其中MIMO降阶模型辨识时曲线拟合度可达80%以上. |
| 关键词: 电力系统稳定 预测误差 辨识 最优控制 阻尼控制 |
| DOI： |
| 分类号:TM571 |
| 基金项目:国家科技支撑计划，国家重点基础研究发展规划(973计划)? |
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| Optimal design of multiple controllers based on MIMO identification for large scale power system |
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LU Chao1 JIN Xiaoming2 LI Peng2 WU Xiaochen2
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| Abstract: |
| The multiple damping controllers must be coordinately designed to avoid the low-frequency oscillation of inter-connected power systems. However,it is difficult to mathematically model a complicated power system. An optimal design approach based on system identification is proposed. A special injection signal,0.1~3 Hz covering all the electro-mechanical oscillation modes,is injected to excite the dynamics of system and the prediction error method is employed to identify the MIMO (Multiple Inputs and Multiple... |
| Key words: power system stability prediction error identification optimal control damping control |
