文章摘要
蒋平,陈琼,吴熙,等.利用重复控制跟踪的统一潮流控制器抑制系统强迫振荡方法[J].电力系统自动化,2018,42(18):64-69. DOI: 10.7500/AEPS20171030017.
JIANG Ping,CHEN Qiong,WU Xi, et al.Suppressing Method of Power System Forced Oscillation by Unified Power Flow Controller Based on Repetitive Control Tracking[J].Automation of Electric Power Systems,2018,42(18):64-69. DOI: 10.7500/AEPS20171030017.
利用重复控制跟踪的统一潮流控制器抑制系统强迫振荡方法
Suppressing Method of Power System Forced Oscillation by Unified Power Flow Controller Based on Repetitive Control Tracking
DOI:10.7500/AEPS20171030017
关键词: 强迫振荡  统一潮流控制器  重复控制  插入式改进重复控制
KeyWords: forced oscillation  unified power flow controller(UPFC)  repetitive control  plug-in modified repetitive control(PMRC)
上网日期:2018-06-22
基金项目:国家自然科学基金资助项目(51577032)
作者单位E-mail
蒋平 东南大学电气工程学院, 江苏省南京市 210096  
陈琼 东南大学电气工程学院, 江苏省南京市 210096 cqltrnysy@163.com 
吴熙 东南大学电气工程学院, 江苏省南京市 210096  
蔡晖 国网江苏省电力有限公司电力经济技术研究院, 江苏省南京市 210096  
祁万春 国网江苏省电力有限公司电力经济技术研究院, 江苏省南京市 210096  
谢珍建 国网江苏省电力有限公司电力经济技术研究院, 江苏省南京市 210096  
摘要:
      从强迫振荡特性出发,利用线性化状态空间法分析了统一潮流控制器(UPFC)提高系统阻尼从而抑制强迫振荡的机理。设计了适用于抑制强迫振荡的插入式改进重复控制器(PMRC),并证明其对系统稳态参考值具有良好的跟踪性能。但考虑到PMRC不具备功率输出能力,提出了将功率控制设备UPFC与PMRC结合,并按PMRC跟踪要求输出抑制功率的方法。该方法使UPFC在提高系统阻尼的基础上输出抑制功率,从多角度抑制强迫振荡。仿真表明,所提方法能够有效抑制系统强迫振荡。
Abstract:
      According to the characteristics of forced oscillation, the linearized state-space method is used to analyze the mechanism of the unified power flow controller(UPFC), which can improve the system damping ratio and suppress forced oscillation. A plug-in modified repetitive control(PMRC)is designed to suppress the forced oscillation. And its tracking performance for the system steady-state reference value proves to be good. However, considering that PMRC cannot output power, a method is proposed to combine the power control device UPFC with PMRC to output the suppression power. The method can make UPFC output the suppression power on the basis of improving the system damping ratio, thus the forced oscillation can be suppressed from multiple aspects. The simulation shows that the proposed method can effectively suppress the forced oscillation of the power system.
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