| 统一潮流控制器的非线性控制 |
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| 引用本文： | 袁志昌,宋强,刘文华,刘田.统一潮流控制器的非线性控制[J].电力系统自动化,2005,29(19):36-39. |
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| 作者姓名： | 袁志昌 宋强 刘文华 刘田 |
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| 作者单位： | 清华大学电机系,北京市,100084;清华大学电机系,北京市,100084;清华大学电机系,北京市,100084;清华大学电机系,北京市,100084 |
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| 基金项目： | 国家重点基础研究发展规划专项资助项目(2004CB217907)。~~ |
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| 摘 要： | 通过独立控制线路的有功和无功功率,统一潮流控制器(UPFC)能够大大提高线路的传输能力。为实现这一目标,装置需要尽可能快的动态响应速度和稳定性。文中提出一种适用于UPFC装置的非线性控制策略,该控制器的理论分析基于同步旋转坐标系,充分考虑了UPFC模型的非线性特点,采用反馈精确线性化的方法进行分析。在此基础上设计得到的控制器较之传统的PI控制和解耦控制策略具有更好的稳定性和更快的动态响应。在EMTDC/PSCAD平台下的仿真结果验证了这种控制策略的优越性能。
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| 关 键 词： | 统一潮流控制器(UPFC) 反馈精确线性化 非线性控制规律 |
| 收稿时间： | 2005-04-06 |
| 修稿时间： | 2005-04-062005-05-18 |
A Nonlinear Controller for Unified Power Flow Controller |
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| YUAN Zhi-chang,SONG Qiang,LIU Wen-hua,LIU Tian.A Nonlinear Controller for Unified Power Flow Controller[J].Automation of Electric Power Systems,2005,29(19):36-39. |
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| Authors: | YUAN Zhi-chang SONG Qiang LIU Wen-hua LIU Tian |
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| Abstract: | A unified power flow controller (UPFC) can independently control real power and reactive power in power line, which makes it attractive in increasing the transmission capability of transmission line. This paper presents a nonlinear control law with better stability and dynamic performance in comparison with PI controller and classical decoupled strategy. The analysis is based on the rotating reference frame, and the nonlinear property of UPFC model is partly dealt through the exact linearization via feedback. The control law is tested with the EMTDC/ PSCAD program system. |
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| Keywords: | unified power flow controller (UPFC) exact linearization via feedback nonlinear control law |
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