结合优化设计滤除非周期分量的新方法  

A method for eliminating aperiodic component with optimization

作　　者：孙勇[1] 徐贤[1] 

机构地区：[1]东南大学电气工程系,江苏南京210096

出　　处：《电力自动化设备》2003年第4期22-24,共3页Electric Power Automation Equipment

摘　　要：提出一种在短数据窗傅氏算法中滤除衰减非周期分量的新方法。即在滤波方程中增加针对非周期分量的方程,通过优化设计法达到设计目标。新滤波算法的数据窗短,对衰减时间常数在设计整定值附近的非周期分量有较好的滤除效果。A new method is presented,which is suitable to short data window algorithm for elimi-nating the decaying aperiodic component.The equation for the aperiodic component is added int o the filtering equations and the design object is achieved with optimization design.The data window of this new filtering algorithm is shorter and the effect of eliminating aperiodic component is better when the actual time constant of decaying is about the value adopted in design.

关 键 词：优化设计 非周期分量 电力系统 故障 向量法 微机保护 傅氏算法 

分 类 号：TM711[电气工程—电力系统及自动化]