| 电网电压高精度同步采样方法研究 |
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| 引用本文： | 李晓龙,白连平.电网电压高精度同步采样方法研究[J].北京机械工业学院学报,2012(5):81-85. |
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| 作者姓名： | 李晓龙 白连平 |
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| 作者单位： | 北京信息科技大学自动化学院,北京100192 |
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| 摘 要： | 为实现对电网电压的同步采样,设计了不使用ADE7758的电能计量功能,只把其作为AD转换芯片的方案。用LTC6903产生时钟作为ADE7758的工作时钟来控制采样速率。由单片机R8C/25调整LTC6903的时钟频率来跟踪电网频率变化从而实现1个电压周期的128点同步采样,实现对电网频率的高精度跟踪,同步精度在0.03 Hz以内,为电网电压的谐波分析奠定基础。
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| 关 键 词： | 同步采样 电网频率 电网电压 |
Research on the method of the grid voltage high-precision synchronous sampling |
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| LI Xiao-long,BAI Lian-ping.Research on the method of the grid voltage high-precision synchronous sampling[J].Journal of Beijing Institute of Machinery,2012(5):81-85. |
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| Authors: | LI Xiao-long BAI Lian-ping |
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| Affiliation: | (School of Automation,Beijing Information Science and Technology University,Beijing 100192,China) |
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| Abstract: | A program without the energy measurement function of ADE7758 only as the AD converter chip is designed for the synchronous sampling of grid voltage.The clock generated by LTC6903 serve as the ADE7758＇s operating clock to control sampling rate.The clock frequency of LTC6903 is adjusted by MCU R8C/25 to track the changes in grid frequency,and thus 128 points synchronous sampling of a voltage cycle is achieved,and the power grid frequency to be tracked with a high degree of accuracy can be achieved,and its synchronization accuracy is less than 0.03 Hz,and the foundation for the harmonic analysis of the grid voltage can be settled. |
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| Keywords: | synchronous sampling grid frequency grid voltage |
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