静电电压表校准装置中平板电极对电势分布的影响

doi:10.3969/j.issn.1000-1158.2020.05.15

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摘要静电电压表校准装置中的平板电极是该装置的重要组成部分,它的几何参数影响了其周围的电势分布。通过理论分析和仿真计算,分析计算了平板电极直径、形状、厚度、边缘平滑度和离地高度等因素对电势分布的影响。计算结果表明:在测试距离100mm时,以直径为600mm,厚度为1mm的圆形平板电极做参考,直径增加至1000mm,其纵向的电势分布只增强了1.3%;增加平板电极厚度100mm,其纵向电势分布的增强大于5.4%,更加趋近无限大平板电极所产生的电势分布;尺寸相当时,形状对电势分布的影响可以忽略;边缘平滑度对电势的影响可以忽略;距离地面0.5m会形成明显的畸变电势分布。这一结果对校准装置中平板电极的设计具有一定的参考意义。

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	史鹏飞
	倪大志
	王晓文
	赵伟

关键词 ：计量学, 静电电压表, 校准装置, 平板电极, 电势分布, 仿真计算

Abstract：The plate electrode is an important part of the calibration device of electrostatic voltmeter. Its geometric parameter affects the potential distribution around it. Through theoretical analysis and simulation, the influence of the diameter, shape, thickness, edge smoothness and height of the plate electrode on the electric potential distribution is analyzed and calculated. The circular plate electrode with a distance of 100mm、a diameter of 600mm and a thickness of 1mm is a reference, the calculation results show that the potential distribution on the axis increases by only 1.3% when the diameter increases to 1000mm, the potential distribution increases by more than 5.4% when the thickness of the flat electrode increases by 100mm, which is closer to the potential distribution generated by the infinite plate electrode. When the size is equal, the influence of shape on the distribution of electric potential can be neglected; the influence of edge smoothness on the distribution of electric potential can be neglected; 0.5 meters from the ground will form a distinct distortion potential distribution. The numerical calculation results can be used as a reference for the design of plate electrodes in the calibration device.

Key words： metrology electrostatic voltmeter calibration device plate electrode potential distribution simulation

PACS:

TB971

基金资助:国家重点研发计划国家质量基础的共性技术研究与应用专项(2017YFF0205701)

作者简介: 史鹏飞(1979-), 男, 汉族, 河北涞源人, 新疆维吾尔自治区计量测试研究院高级工程师, 硕士, 主要从事高电压计量和无线电计量工作。Email: 477792617@qq.com

引用本文:

史鹏飞,倪大志,王晓文,赵伟. 静电电压表校准装置中平板电极对电势分布的影响[J]. 计量学报, 2020, 41(5): 597-601.
SHI Peng-fei,NI Da-zhi,WANG Xiao-wen,ZHAO Wei. The Influence of the Flat Electrode in the Calibration Device of Electrostatic Voltmeter on the Potential Distribution. Acta Metrologica Sinica, 2020, 41(5): 597-601.

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http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2020.05.15 或 http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2020/V41/I5/597

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