自适应相量计算方法  

Adaptive Phasor Calculation Method

作　　者：常宝波[1] 张培荣[1] 徐广腾[1] 

机构地区：[1]烟台东方电子信息产业股份有限公司技术中心,山东省烟台市264000

出　　处：《电力系统自动化》2008年第11期53-55,共3页Automation of Electric Power Systems

摘　　要：提出了一种电流电压相量的计算方法,其特征为利用余弦滤波器滤出的当前点和前推1/4周期后的点分别经幅频特性系数修正后作为相量的实部和虚部。与目前所用的方法相比,无需调整硬件的采样间隔就可实现频率的自适应性,且具有幅频特性一致、相频特性正交、动态收敛性好、计算量少等特点,无需加差分滤除直流分量。This paper presents a new method for current or voltage phasor calculation （PC）. The method uses the cosine filter （CF） and amplitude-frequency coefficient correction to filter out the real part of a phasor at the present sampling, and the imaginary part of the phasor at the a-quarter-period-before sampling. With this method, it is possible to calculate the phasors adaptively without any hardware changing sampling interval. It has characteristics such as amplitude-frequency consistency, phasor frequency orthogonality, fine dynamic convergence, less calculation burden, and has no need to add differential filter to remove direct current （DC） component.

关 键 词：相量计算 余弦滤波器 继电器 

分 类 号：TM744[电气工程—电力系统及自动化]