| 电力数据采集终端中滤波方法研究 |
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| 引用本文： | 全 菲,谢富强,李正国,徐玉姣,朱飞辉.电力数据采集终端中滤波方法研究[J].深圳职业技术学院学报,2014(1):16-19. |
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| 作者姓名： | 全 菲 谢富强 李正国 徐玉姣 朱飞辉 |
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| 作者单位： | [1]南华大学,湖南衡阳421000 [2]深圳职业技术学院,广东深圳518055 |
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| 基金项目： | 深圳市战略新兴产业发展专项资金资助项目（JCYJ20130331152422011） |
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| 摘 要： | 在电力数据采集终端中滤波器常用来滤除耦合在电力信号传输线路上的高频谐波、抑制干扰，以确保有效地采集电力线上的电压和电流信号，提高系统的采样精度．本文提出一种新的混合滤波方案，即采用二阶压控电压源低通滤波电路的硬件滤波和去极值平均魔波与维纳滤波相结合的数字滤波方案，采用硬件滤波滤除采集信号中的高频分量，通过软件滤波抑制低频分量中的干扰．实验结果表明，这种方案可行且能达到预期的效果．
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| 关 键 词： | 压控电压源低通滤波 去极值平均滤波 维纳滤波 |
Application of Filtering Technology in PowerData Acquisition Terminal |
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| YU Fei,XIE fuqiang,LI Zhengguo,XU Yujiao,ZHU Feihui.Application of Filtering Technology in PowerData Acquisition Terminal[J].Journal of Shenzhen Polytechnic,2014(1):16-19. |
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| Authors: | YU Fei XIE fuqiang LI Zhengguo XU Yujiao ZHU Feihui |
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| Institution: | 1. University of South China, Hengyang, Hunan 421000; 2. Shenzhen Polytechnic, Shenzhen, Ouangdong 518055, China) |
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| Abstract: | In order to ensure the data of input voltage and current signals sampled effectively and improve the sampling accuracy of the system, filter is used to filter the high frequency harmonic coupled on electrical signal transmission lines and suppress the interference in intelligent data acquisition terminal. This paper presents a scheme using second-order voltage controlled low-pass filtering circuit and combining limitering average filtering with Wiener filtering, with filtering circuit filtering tile high-frequency components, and digital filter suppressing the interference in low-frequency components. The test results show that the scheme is effective and can achieve the desire results. |
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| Keywords: | voltage-controlled voltage source low-pass filtering limitering average filtering Wienerfiltering |
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