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| 多干扰情况下的电力系统闭环辨识研究 | |
| 引用本文： | 吴超,陆超,韩英铎,吴小辰,柳勇军.多干扰情况下的电力系统闭环辨识研究[J].控制理论与应用,2011,28(11):1569-1576. |
| 作者姓名： | 吴超 陆超 韩英铎 吴小辰 柳勇军 |
| 作者单位： | 1. 深圳大学机电与控制工程学院,广东深圳518060／深圳市传感器技术重点实验室,广东深圳518060 2. 清华大学电力系统国家重点实验室,北京,100084 3. 南方电网技术研究中心,广东广州,510623 |
| 基金项目： | 广东省自然科学基金博士科研启动资助项目(S2011040000995); 深圳大学基础研究资助项目(201117); 深圳市传感器技术重点实验室开放基金资助项目(SST201106). |
| 摘 要： | 电力系统中多处负荷投切与变化等随机性质小扰动,导致系统响应始终存在类似噪声的小幅波动.本文提出利用广域测量类噪声信号辨识被控电力系统模型,及时准确地反映系统当前运行特性,进而解决因仿真模型及参数误差造成的系统分析及控制器设计可信度难以评估等难题.重点对多干扰情况下的系统模型闭环辨识问题进行理论性研究,包括闭环可辨识性、辨识一致性及收敛性等方面,分析得出类噪声环境下要实现系统闭环辨识需具备的条件,并对理论研究结果进行了仿真验证. |
| 关 键 词： | 类噪声 闭环辨识 可辨识性 一致性 收敛性 |
| 收稿时间： | 2010/7/15 0:00:00 |
| 修稿时间： | 2010/12/28 0:00:00 |
Closed-loop identification of power system with multiple disturbances |
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| WU Chao,LU Chao,HAN Ying-duo,WU Xiao-chen and LIU Yong-jun.Closed-loop identification of power system with multiple disturbances[J].Control Theory & Applications,2011,28(11):1569-1576. | |
| Authors: | WU Chao LU Chao HAN Ying-duo WU Xiao-chen and LIU Yong-jun |
| Affiliation: | College of Mechatronics and Control Engineering, Shenzhen University; Shenzhen Key Laboratory of Sensor Technology,The State Key Laboratory of Power System, Tsinghua University,The State Key Laboratory of Power System, Tsinghua University,Technology Research Centre of China Southern Power Grid,Technology Research Centre of China Southern Power Grid |
| Abstract: | Small fluctuations caused by random changes of loads exist continuously in power grids, which are called ambient signals. We put forward a method of using wide-area measured ambient data to identify the power system model. This model reflects accurate operating conditions currently, and provides information for solving problems in system analysis and controller design. The closed-loop identification of system with multiple disturbances is theoretically studied, including the closed-loop identifiability, the consistency and the convergence. The requirements for realizing the closed-loop identification are summarized. Simulation examples validate the theoretical research results. |
| Keywords: | ambient signal closed-loop identification identifiability consistency convergence |
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