用于变压器损耗校准的移相装置研制

doi:10.3969/j.issn.1000-1158.2022.12.21

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摘要针对变压器损耗测量系统(TLMS)校准中,对功率因数可调高压大电流信号源的需要,开展了移相技术研究及装置研制。装置在机理上利用希尔伯特变换,对输入信号进行卷积运算,得到正交参考信号;然后通过双参数的矢量合成技术生成相位可调的输出,从而产生不同功率因数的试验信号。基于此技术,搭建并实现了Compact RIO平台的移相装置。同时利用Compact RIO作为硬件平台、LabVIEW软件实现可视化操作,设计了相位测量仪器,并结合相角电压表Clark-Hess 2600对移相装置的稳定性和分辨率进行实验验证。实验结果表明:所研制的移相装置分辨率、稳定性及准确度优于0.001°。

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	李伟杰
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	邵海明
	蔡晋辉

关键词 ：计量学, 变压器损耗测量, 希尔伯特变换, 移相技术, Compact RIO, 功率因数

Abstract：Research on phase shifting technology and instrument were carried on, which was applied in a high voltage and current source with tunable power factor for the calibration of transformer loss measurement system (TLMS). The instrument was based on Hilbert Transform. Input signal was convolved to generate a quadrature signal, and then the output signal with required phase was generated with vector synthesis method. Based on the aboved research, a phase shifting device was built with Compact RIO platform. Meanwhile, a phase difference measurement instrument was developed, which combined signal acquiring and processing technology of Compact RIO and LabVIEW platform. Resolution and stability of the phase shifting device were also verified by a commercial phase angle voltmeter Clark-Hess 2600. The experimental results show that resolution, stability, and accuracy of the system resolution are all better than 0.001°.

Key words： metrology transformer loss measurement Hilbert transform phase shifting technology Compact RIO power factor

收稿日期: 2021-01-07 发布日期: 2022-12-28

PACS:

TB971

基金资助:国家质量基础专项(2017YFF0205701)

通讯作者: 赵伟(1984-),安徽淮南人,博士,中国计量科学研究院副研究员,主要从事高电压计量技术及标准装置方面的研究。Email: zhaowei@nim.ac.cn E-mail: zhaowei@nim.ac.cn

作者简介: 李伟杰(1996-),浙江丽水人,中国计量大学硕士研究生,研究方向为信号处理、变压器损耗校准等。Email: 751989325@qq.com

引用本文:

李伟杰,赵伟,邵海明,蔡晋辉. 用于变压器损耗校准的移相装置研制[J]. 计量学报, 2022, 43(12): 1651-1657.
LI Wei-jie,ZHAO Wei,SHAO Hai-ming,CAI Jin-Hui. Development of Phase Shifting Instrument Applied for Transformer Loss Calibration. Acta Metrologica Sinica, 2022, 43(12): 1651-1657.

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