| 基于数字化计量体系的有限字长效应分析 |
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| 引用本文： | 王洪林,曹敏,李波,刘清蝉,林聪,李开成,陈婷.基于数字化计量体系的有限字长效应分析[J].电测与仪表,2017,54(16). |
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| 作者姓名： | 王洪林 曹敏 李波 刘清蝉 林聪 李开成 陈婷 |
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| 作者单位： | 1. 云南电网有限责任公司电力科学研究院,昆明,650217;南方电网公司电能计量重点实验室, 昆明 650217;2. 华中科技大学 强电磁工程与新技术国家重点实验室,武汉,430074 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 随着数字化变电站的迅猛发展,数字化电能计量将得到更广泛的应用。基于数字化计量体系下的有限字长效应会对测量结果产生误差,本文分别对A/D转换量化误差、滤波器系数量化误差和运算量化误差进行了探讨,并结合MATLAB综合分析了这些影响因素对整体计量准确度的影响。
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| 关 键 词： | 有限字长 模数转换 滤波器系数 运算误差 |
| 收稿时间： | 2016/8/1 0:00:00 |
| 修稿时间： | 2016/10/8 0:00:00 |
Analysis of Finite Word Length Based on Digital Metering |
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| wanghonglin,caomin,libo,liuqingchan,lincong,likaicheng and chenting.Analysis of Finite Word Length Based on Digital Metering[J].Electrical Measurement & Instrumentation,2017,54(16). |
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| Authors: | wanghonglin caomin libo liuqingchan lincong likaicheng and chenting |
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| Affiliation: | Electric Scientific Research Institute of Yunnan Power Grid Co.,Ltd,Electric Scientific Research Institute of Yunnan Power Grid Co.,Ltd,Electric Scientific Research Institute of Yunnan Power Grid Co.,Ltd,Electric Scientific Research Institute of Yunnan Power Grid Co.,Ltd,Electric Scientific Research Institute of Yunnan Power Grid Co.,Ltd,Huazhong University of Science and Technology,Electric Scientific Research Institute of Yunnan Power Grid Co.,Ltd |
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| Abstract: | With the rapid development of digital substation, digital metering is getting more and more wide application in China.Based on finite word length effect in digital substation system, this paper explores the errors caused by the quantization of AD conversion, filters coefficients and digital operation, and combined with MATLAB, the paper makes a comprehensive analysis of the influence of these factors on overall metering accuracy. |
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| Keywords: | finite word length ADC filters coefficients operation errors |
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