| 后置低通滤波器对冲击负荷电能计量的影响 |
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| 引用本文： | 彭宏亮,刘开培,陈宜皇.后置低通滤波器对冲击负荷电能计量的影响[J].电测与仪表,2015,52(8). |
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| 作者姓名： | 彭宏亮 刘开培 陈宜皇 |
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| 作者单位： | 武汉大学电气工程学院,武汉,430000 |
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| 摘 要： | 从电子式电能表有功计量的原理出发定量分析了后置低通滤波器对电能计量的影响。从理论分析结果可以得出电子式电能表后置低通滤波器对计量周期性的电压电流波形理论上没有影响,对计量冲击负荷产生的非周期性的电压电流波形将会导致计量不准确。最后以电弧炉负荷为例,建立了研究冲击负荷电能计量的仿真模型,仿真结果表明电子式电能表后置低通滤波器会加大冲击负荷电能计量误差。
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| 关 键 词： | 冲击负荷 电子式电能表 滤波器 电弧炉 电能计量 |
| 收稿时间： | 2014/5/27 0:00:00 |
| 修稿时间： | 2014/5/27 0:00:00 |
The Influence on the Rear Low-Pass Filter for Electric Energy Metering |
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| PENG Hong-liang,LIU Kai-pei and CHEN Yi-huang.The Influence on the Rear Low-Pass Filter for Electric Energy Metering[J].Electrical Measurement & Instrumentation,2015,52(8). |
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| Authors: | PENG Hong-liang LIU Kai-pei and CHEN Yi-huang |
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| Affiliation: | School of Electrical Engineering, Wuhan University,School of Electrical Engineering, Wuhan University,School of Electrical Engineering, Wuhan University |
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| Abstract: | The effect of rear low-pass filter on electric energy metering has been analyzed quantitatively according to the principle of active power metering. The theoretical analysis results show that the rear low-pass filter of the electric energy meter has no effect to the measurement of voltage and current waveforms periodic, while metering inaccuracy coming out for voltage and current aperiodic waveforms produced by impact load. Taking the electric arc furnace load as an example, a simulation model to study electric energy metering for the impact loads has been built. The simulation results show that the rear low-pass filter of electronic energy meter will increase electric energy metering error for the impact load. |
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| Keywords: | impact load electronic energy meter filter arc furnace electric energy measurement |
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