电力系统辨识的解耦性与有效性分析  

Decoupling and Effectivity Analysis of Power System Identification

作　　者：谢会玲[1] 付红军[2] 侯学勇[1] 鄢安河[2] 茆超[1] 鞠平[1] 

机构地区：[1]河海大学电气工程学院,南京210098 [2]河南省电力调度通信中心,郑州450052

出　　处：《电力系统及其自动化学报》2009年第2期15-19,共5页Proceedings of the CSU-EPSA

基　　金：国家杰出青年科学基金项目(50725723)

摘　　要：针对电力系统辨识的解耦性这个重要的基础性问题,以一简单电力系统为背景,从理论上进行分析,指出只要各个元件或者节点之间不存在交叉反馈,就有可能进行解耦辨识。同时指出,由于负荷或者其它元件节点的端口变量是全系统共同决定的,能否进行有效辨识,还取决于端口变量的功率频谱能否含盖所辨识节点或者元件的频段等因素。最后,通过应用实例验证了观点的正确性。In view of the decoupling which is a very important basic problem to power system identification, based on a simplified system, the deeoupling and effective identification of the system is analyzed. It is pointed that the system identification could be deeoupled if the elements or nodes in the system are not interconnected through feedback. Meanwhile, the bus variables are determined by whole system, the effective identification depends on whether the frequency spectrum of the measured variables covers the frequency spectrum of the unit to be identified. A case study is given to prove the viewpoint finally.

关 键 词：电力系统 参数辨识 解耦 有效性 频谱 

分 类 号：TM712[电气工程—电力系统及自动化]