计及二阶非线性特性的PSS配置  

Placement of PSS Considering Second Order Nonlinearity

作　　者：邓集祥[1] 叶静[1] 郎斌斌 王俊胜 

机构地区：[1]东北电力大学电气工程学院,吉林省吉林市132012 [2]中国福霖风能开发公司,北京市100034 [3]上都发电有限责任公司,内蒙古锡林浩特市027200

出　　处：《电力系统自动化》2008年第12期27-31,88,共6页Automation of Electric Power Systems

摘　　要：在正则形理论指导下,提出了计及2阶模态非线性相关作用的电力系统稳定器(PSS)配置新方法。通过辨识系统中准谐振模式和主导低频振荡模式,分析模式之间以及模式与状态变量之间的非线性相关性来确定与准谐振模式和主导低频振荡模式联系最紧密的状态变量和相关发电机,进一步利用非线性相关作用指标来评估模式之间2阶非线性相关作用的大小,以此为据来确定PSS配置。4机2区域系统和一个实际互联大系统的算例结果验证了这些新观点和这种PSS新配置方法的正确性和有效性。On the basis of the normal form theory, a new algorithm of placing PSS considering second order nonlinearity is presented. By identifying the near-resonance modes and the dominant low-frequency oscillation modes of power system, and analyzing the nonlinear interaction among modes and state variables, the critical state variables and related generators can be identified. Moreover, the nonlinear interaction index is used to assess the magnitude of second-order nonlinear interaction. Based on this nonlinear interaction index, the location of the PSS is determined. The case studies on two-area four-machine test system and a practical large-scale power system verify the correctness and effectiveness of the proposed placing algorithm of PSS.

关 键 词：2阶模态准谐振 电力系统稳定器(PSS) 正则形理论 非线性指标 模式间的相互作用 

分 类 号：TM726[电气工程—电力系统及自动化]