基于两次采样的交直流电功率迭代算法  

Every other sample-based iteration algorithm for alternative & direct current power

作　　者：刘金权[1] 姜会平 周志辉 李华[3] 储昭碧[3] 

机构地区：[1]许继集团有限公司,河南许昌461000 [2]河南许继仪表有限公司,河南许昌461000 [3]合肥工业大学电气与自动化学院,合肥230009

出　　处：《电测与仪表》2016年第1期32-37,49,共7页Electrical Measurement & Instrumentation

基　　金：国家高技术研究发展计划计划(863计划)基金项目(2014AA052003)

摘　　要：提出一种基于两次采样的交、直流电功率迭代算法,用于测量指定频率电力信号的交、直流电功率。算法针对由直流分量与交流分量相叠加的非正弦电力信号模型,首先计算出电压和电流信号中的直流和交流分量,再分别计算出各分量的功率值。通过MATLAB仿真,不仅验证了算法的快速性及准确性,并且由比较得出带宽参数大小对功率跟踪误差的影响,调节该参数大小可提高功率估算的快速性。In this paper,we propose an every other sample-based iteration algorithm for getting electric powers of direct current and alternative current,and the method is used to measure electric powers of DC and AC whose frequencies are specified. This algorithm takes aim at a mathematical model of non-sinusoidal signals which are made up of DC component and AC components,we at firstly calculate the DC component and AC components of voltage and current signals respectively,then computing the electric powers of each part. This measurement has been proved to be fast and accurate by MATLAB simulation. On the other hand,the effect on tracking accuracy caused by the size of bandwidth parameter has also been revealed,the quickness of power tracking can be improved by adjusting the size of this bandwidth.

关 键 词：电功率测量 两次采样 带宽参数 功率跟踪 

分 类 号：TM71[电气工程—电力系统及自动化]