基于软硬件协同优化的高精度计量方法
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TM933

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Research on High-precision Metering Method Based on Software and Hardware Collaborative Optimization
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    摘要:

    随着以新能源为主体的新型电力系统快速构建,针对新能源接入电网造成电压波动强度大、随机性强的问题,本文基于多通道高精度采集和国产微处理器的架构设计,通过优化软硬件方法,提出一种面向新能源接入的电能计量方法。通过采用国产零磁通互感器、运算放大器以及高精度模数转换芯片的优化设计,构建计量模块硬件方案。提出基于插值法和移点法结合的高精度相位补偿方法,改善电流电压信号同步性,研究基于数据拟合的功率补偿方法,提升电量计量准确度。最后通过设置不同实验条件,验证提出方法的有效性,结果表明,本文所提出方法实现计量准确度高,优于有功准确度0.2S技术要求。

    Abstract:

    With the rapid construction of a new-type power system based on new energy, in order to solve the problem of large voltage fluctuations and strong randomness caused by new energy access to the grid, a new energy access-oriented electric energy measurement is proposed by optimizing the software and hardware method. By using the optimized design of domestic zero-flux transformers, operational amplifiers and high-precision analog-to-digital conversion chips, the hardware solution of the metering module is constructed. A high-precision phase compensation method based on the combination of interpolation and point shifting is used to improve the synchronization of current and voltage signals. A power compensation method based on data fitting is studied to improve the accuracy of electricity metering. The effectiveness of the proposed method is verified by setting different experimental conditions. The results show that the method achieves high measurement accuracy, whici is better than the technical requirment of active power accuracy of 0.2S.

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王永贵,刘柱,黄吕超,等. 基于软硬件协同优化的高精度计量方法[J]. 科学技术与工程, 2022, 22(25): 11062-11067.
Wang Yonggui, Liu Zhu, Huang Lüchao, et al. Research on High-precision Metering Method Based on Software and Hardware Collaborative Optimization[J]. Science Technology and Engineering,2022,22(25):11062-11067.

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历史
  • 收稿日期:2022-02-18
  • 最后修改日期:2022-08-04
  • 录用日期:2022-05-07
  • 在线发布日期: 2022-09-29
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