基于最小二乘拟合测量电力系统频率的新方法  

A NEW METHOD FOR MEASURING POWER SYSTEM FREQUENCY BASED ON LEAST SQUARE FIT

作　　者：胡绍民[1] 

机构地区：[1]国防科技大学理学院,长沙410073

出　　处：《电力系统自动化》2000年第16期32-34,共3页Automation of Electric Power Systems

摘　　要：提出了一种利用最小二乘拟合技术测量电力系统频率的新算法 ,能消除信号中直流成分对频率测量的影响。还给出了一种信号预处理算法 ,它可有效地抑制信号中的 2次谐波和 3次谐波。仿真结果表明了新算法测量电力系统频率的有效性。A new algorithm based on the least square fit technique for m easuring power system frequency is presented.The algorithm has the advantage of less com putation and of fast response,and is free from the influence of the DC component. A preprocessing algorithm is also presented,which can effectively suppress the second harmonic and the third harm onic. Experim ental results show the effectiveness of the new algorithm for measuring power system frequency.

关 键 词：最小二乘拟合 电力系统 频率 测量 

分 类 号：TM935[电气工程—电力电子与电力传动]