| 谐波下的电能计量研究及功率因数分析 |
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| 引用本文： | 李绍铭,纪萍,刘红锐.谐波下的电能计量研究及功率因数分析[J].工业仪表与自动化装置,2009(6):3-5,11. |
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| 作者姓名： | 李绍铭 纪萍 刘红锐 |
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| 作者单位： | 安徽工业大学,电气信息学院,安徽,马鞍山243002 |
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| 基金项目： | 国家自然科学基金项目"基于开关线性复合机理的柔性波形功率变换技术研究"，安徽省教育厅自然科学科技项目"畸变电网下电能计量理论分析及对策研究" |
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| 摘 要： | 电力系统中非线性负载通常是谐波源，其正常运行导致电网畸变严重，因而影响了基于正弦电压、电流原理下的感应式电能表的电能计量。在电网存在谐波时，感应式电能表会存在较大计量误差，由于线性负载在吸收基波电能的同时也吸收谐波电能，而非线性负载通常在吸收基波电能的同时还会作为谐波源发出谐波电能污染电网，因此，感应式电能表的计量偏差通常对这两类负载又是极不公允的。该文从理论上对非线性负载的电能计量进行了深入分析，通过电能计量对策研究和仿真分析，讨论了存在非线性负载时供用电计量的公平性和准确性问题，进而提出了电网畸变时基于基谐波分离的电能计量方案。
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| 关 键 词： | 电力系统 谐波 功率因数 电能计量 |
The study of the electric energy metering and analysis of power factor for the load under harmonic |
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| LI Shaoming,JI Ping,LIU Hongrui.The study of the electric energy metering and analysis of power factor for the load under harmonic[J].Industrial Instrumentation & Automation,2009(6):3-5,11. |
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| Authors: | LI Shaoming JI Ping LIU Hongrui |
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| Affiliation: | (School of Electrical Engineering ＆ Information, Anhui University of Technology,Anhui Ma＇anshan 243002, China) |
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| Abstract: | In the power system, nonlinear load is usually the harmonic source. Its normal operation leads to a serious network distortion and affects the energy measurement which is based on the sinusoidal voltage and current. This paper analyzes the power factor and the electric energy metering of the nonlinear load in theory. With analysis and numerical simulation, this paper discuss the tradeoff of the supply and consumption of electricity of the nonlinear load and make an extension of the power factor to the case of the network distortion, and gives new method of the electric energy metering . |
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| Keywords: | power system harmonic power factor electric energy metering |
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