基于频域子空间辨识和集结理论的广域阻尼控制安装地点与控制信号选取  

A Method to Select Wide-area Damping Control Installing Location and Control Signals of Large-scale Power Grid Based on the Frequency Domain Subspace Identification and Aggregation Theory

作　　者：褚晓杰[1] 高磊[1] 印永华[1] 唐晓博[2] 周成[1] 易俊[1] 张健[1] 卜广全[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192 [2]哈尔滨电业局,黑龙江省哈尔滨市150010

出　　处：《中国电机工程学报》2015年第18期4625-4634,共10页Proceedings of the CSEE

基　　金：国家863高技术基金项目(2011AA05A119)~~

摘　　要：广域阻尼控制是抑制大电网低频振荡的重要手段,决定广域阻尼控制效果的关键是控制地点和广域控制信号的选择。为实现大型互联电网广域控制地点和控制信号的有效、合理选择,提出一种基于频域子空间辨识和集结理论的大电网广域控制安装地点与控制信号选取新方法。首先,将系统的可控可观性进行量化,以实现不同类型输入输出变量的可观性和可控性的量化分析;然后,使用集结理论得到便于测量的控制器可观可控综合指标,用降阶集结模型代替原系统进行广域控制安装地点与控制信号选取,基于集结模型的方法能够方便进行实测,更利于在大型电力系统中应用;最后,提出基于频域子空间辨识的大电网广域控制安装地点与控制信号选取方法,该方法应用频域子空间辨识理论完成量化指标的测量与计算,整个过程便于工程实现。通过实际电网的实例验证了该文方法的有效性及在实际电网中应用的可行性。实例分析表明,所提方法更加有利于工程实现,可应用于实际大型互联电网的广域控制器设计中。Wide-area damping control is important to suppress low frequency oscillation of large-scale power grid：the selection of control installation location and wide-area control signal is a key to determine the effect of wide-area damping control.To achieve the choice of wide-area control installation location and control signals of large-scale interconnected power system effective and reasonable, a new method to select wide-area damping control installation location and control signals of large-scale power grid based on the frequency domain subspace identification and aggregation theory is presented. First, the observability/controllability is quantified,in order to achieve quantitative analysis observability and controllability of different types of input and output variables. Then,a controller considerable and controllable composite index which easy to measure is obtained by using aggregation theory, use reduced-order aggregation model instead of the original system to achieve the selection of wide-area control installation location and control signal, the method based on aggregation theory is easy to measure,is suitable for large-scale power systems. Finally,a new method to select wide-area damping control installation location and control signals of large-scale powe grid based on the frequency domain subspace identification is presented, completing measurement and calculation of quantitative indexes by using frequency domain subspace identification,the whole process is easy to project realize. The effectiveness of the method and the feasibility of the application in the practical grid are demonstrated by the oscillation examples of the practical grid.The practical case study results show that the method can be more suitable for theactual projects,can be applied to design the wide-area controller of large-scale interconnected power system.

关 键 词：大电网 电力系统 广域阻尼控制 频域子空间辨识 集结理论 

分 类 号：TM71[电气工程—电力系统及自动化]