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文章摘要
谐波工况下相位补偿对全波计量影响
The Effect on Total Electric Energy Metering Accuracy of the Phase Compensation for Smart meters under Harmonics Conditions
Received:June 30, 2015  Revised:September 22, 2015
DOI:
中文关键词: 智能电能表  全波计量  相位补偿  FFT
英文关键词: Smart meters  total electric energy metering  phase compensation  FFT
基金项目:
Author NameAffiliationE-mail
Zhou Chao* Jiangsu Electric Power Company Research Institute zhouchao023@126.com 
Ji Feng Jiangsu Electric Power Company Research Institute  
Tian Zhengqi Jiangsu Electric Power Company Research Institute  
Zhu Yunan Jiangsu Electric Power Company Research Institute  
Liu Jian Jiangsu Electric Power Company Research Institute  
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中文摘要:
      目前全波计量模式下的智能电能表由于前端电压和电流采样电路为两个独立的采样通道,两个通道对电压和电流相位的偏移非一致性会产生电压和电流信号间的附加相位差。这种附加相位差在基波工况下可以通过相位补偿技术在校表环节得到大大减小。但在谐波工况下这种基于基波的相位补偿会对高次谐波会产生过相位补偿,从而对电能表全波有功计量产生影响。本文通过对现有智能电能表全波有功计算算法、相位补偿技术进行分析,建立谐波工况下相位补偿对全波计量误差分析模型,最后通仿真算例,量化分析相位补偿技术对全波计量的影响。
英文摘要:
      The voltage front-end sampling circuit and the current front-end sampling circuit for smart meters with total electric energy metering fuction are two independent channels, so there exist extra phase error because of the different attenuation characteristics of the two channels. The extra phase error can be effectively reduced by the phase compensation technology under fundamental power frequency condition. However, the phase compensation based on fundamental power frequency can result in phase over compensation for the high order harmonic component, which will result in the effect on total electric energy metering accuracy. This paper will conduct an error analysis from the aspects of total electric energy metering algorithm and the phase compensation technology, and then the model for the total electric energy metering error which caused by phase compensation based on fundamental power frequency will be built. The quantitative analysis for total electric energy metering error caused by phase compensation will be taken from the simulation by MATLAB.
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