| 谐波对感应式有功电能表计量的影响 |
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| 引用本文： | 许仪勋,李东东,王华昕,程浩忠. 谐波对感应式有功电能表计量的影响[J]. 华东电力, 2012, 0(1): 123-125 |
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| 作者姓名： | 许仪勋 李东东 王华昕 程浩忠 |
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| 作者单位： | 上海电力学院电力与自动化工程学院;上海交通大学电气工程系 |
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| 基金项目： | 上海市重点科技攻关计划资助项目(10110502100)~~ |
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| 摘 要： | 在试验的基础上分析了谐波对感应式电能表计量特性的影响。通过一系列谐波环境下感应式电能表计量数据的最小二乘分析,将误差来源分为3个方面:通过频率响应试验数据的分析,当频率不变、电压和电流的有效值不变、仅电压和电流的相位差(对应功率因数)改变时,其功率幅值(对应电能表最大计量值)随着谐波次数的增大而迅速减少,相对于基波的百分比及电压和电流的相位改变保持相对稳定;另外,谐波改变了基波电能的计量。
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| 关 键 词： | 谐波分析 感应式电能表 最小二乘法 误差分析 |
Impacts of Harmonics on Induction Watthour Meter |
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| XU Yi-xun,LI Dong-dong,WANG Hua-xin,CHENG Hao-zhong. Impacts of Harmonics on Induction Watthour Meter[J]. East China Electric Power, 2012, 0(1): 123-125 |
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| Authors: | XU Yi-xun LI Dong-dong WANG Hua-xin CHENG Hao-zhong |
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| Affiliation: | 1.School of Electric Power and Automation,Shanghai University of Electric Power,Shanghai,200090;2.Department of electrical engineering,Shanghai Jiao Tong University,Shanghai 200240,China) |
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| Abstract: | Experimental research has been conducted on the impacts of harmonics on induction watthour meter.The analysis of a series of experiments using the least square method(LMS) shows that the errors of an induction watthour meter in the presence of harmonics are attributed to three factors.Firstly,the frequency response test data LMS analysis concludes that when the frequency and valid value of voltages and currents are not changed,and only their phase difference(the power factor) varies,the power amplitude(the max registration) decreases with the increasing harmonic order,and keeps relatively stable versus the percentage of fundamental harmonic and phrase shift of voltages and currents;in addition,harmonics change the metering of fundamental harmonic power. |
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| Keywords: | harmonic analysis induction watthour meter least square method error analysis |
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