| 数字式电能表电压采样误差的理论分析与仿真 |
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| 引用本文： | 郑可,侯兴哲,李胜芳,张淮清.数字式电能表电压采样误差的理论分析与仿真[J].电测与仪表,2009,46(Z2). |
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| 作者姓名： | 郑可 侯兴哲 李胜芳 张淮清 |
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| 作者单位： | 1. 国家电网公司电能计量器具性能评估实验室,重庆,401123
2. 重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆,400044 |
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| 摘 要： | 证明了整周期采样无原理性误差,推导了非整周期采样的误差公式,仿真实验反映了电压频率、采样点数和采样起始角与相对误差的关系.在论文实验条件下:频率变化0.1Hz时误差变化约0.1％,采样点数与误差为反比关系,起始角与误差近似为余弦关系.结论同样适用于电流有效值的计量.
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| 关 键 词： | 电能计量 有效值 整周期采样 误差分析 |
Theoretical Analysis and Simulation of Voltage Sampling Error's in Digital Watt-hour Meter |
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| ZHENG Ke
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HOU Xing-zhe
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LI Sheng-fang
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ZHANG Huai-qing.Theoretical Analysis and Simulation of Voltage Sampling Error's in Digital Watt-hour Meter[J].Electrical Measurement & Instrumentation,2009,46(Z2). |
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| Authors: | ZHENG Ke HOU Xing-zhe LI Sheng-fang ZHANG Huai-qing |
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| Affiliation: | ZHENG Ke~1,HOU Xing-zhe~1 LI Sheng-fang~1,ZHANG Huai-qing~2 (1.Laboratory For The Performance Assessment of Electrical Metering Devices State Grid Corporation,Chongqing 401123,China.2.State Key Laboratory of Power Transmission Equipment & System Security and New Technology,Chongqing University,Chongqing 400044,China.) |
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| Abstract: | The paper had proven that the integer-period sampling's error is zero,and inferred the non-integerperiod sampling's error formula.The simulation experiment has reflected the voltage frequency,the sampling numbers and the start angle and relative error's relations.Under paper's experimental condition:When frequency changes 0.1Hz,the relative error changes approximately 0.1%,the sampling number and the error are the inverse relation,the start angle and the error are approximate the cosine relations.The conclu... |
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| Keywords: | electrical energy measurement root mean square integer-period sampling error analysis |
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