互连电力系统自适应紧急控制　I：等值模型的多步递归最小二乘辨识  

An Adaptive Emergency Control Scheme of Interconnected Power SystemsI: Estimation of Equivalent Models Based on Multistage Recursive Least-Squares identification

作　　者：李兴源[1] 刘俊勇[1] 王贵德[1] 

机构地区：[1]成都科技大学电力工程系

出　　处：《成都科技大学学报》1994年第3期36-44,共9页

摘　　要：本文提出一种互连电力系统紧急状态等值模型的多步递归最小二乘辨识方法。只需要局部测量，该方法就能估计互连电力系统等值两机模型参数（惯性常数、阻尼系数、内电势、相对功角和相对角速度）和联络线电抗．换言之，在线估计紧急状态下互连电力系统的平衡点和系统状态是可能的．所估计的模型能用于各种紧急状态控制和别的方面．用一个四机系统的仿真计算证明了多步最小二乘辨识的有效性．Multistage Recursive Least-Squares(MRLS) identification of the equivalent twomachine model of interconnected electric power systems in emergency state is presented in this parer. Requiring only locally measured variables, the MRLS identification allows the estimation of the reactance of interne and the parameters of the equivalent two-machine model including inertia constant, damping coefficient, internal voltage, relative rotor angle and relative speed. In other words,on-line estimation of the equilibrium point and the system states of interconnected electric power systems in emergency state is possible.The estimated model can be utilized in various emergency control strategies or for any other application. Studies demonstrate the effectiveness of the MRLS identification technique.

关 键 词：电力系统 等值模型 最小二乘法 

分 类 号：TM712[电气工程—电力系统及自动化]