Transmission Line Design for Individual Partial Discharge Waveshape Measurement

2020 IEEE Electrical Insulation Conference (EIC) Pub Date : 2020-06-01 DOI:10.1109/eic47619.2020.9158721

Mojtaba Rostaghi Chalaki, K. Yousefpour, Z. Ahmed, Chanyeop Park

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引用次数: 3

Abstract

Measurement of transient phenomenon such as individual PD pulses requires fast, accurate, and noise-free circuits. The bandwidth of elements used in these circuits can affect the captured PD pulse waveshapes. Transmission lines, which couple the PD sources to data recording devices, are one the most important elements among various components in measurement systems. Therefore, transmission lines with wide bandwidths are necessary in building testbeds that capture individual PD pulses. This paper explains the requirements of an ideal Transmission line design that enables accurate individual PD pulse waveshape measurements. We comprehensively use finite element analysis (FEA) simulation to analyze the impact of PD testbed design on the PD pulse measurement performance. Based on the newly designed testbed with the proposed transmission line design, individual PD measurement performance is examined by the time-domain analysis of the FEA simulation. The results show the effect of transmission line parameters on its frequency responses. Also, the application of a narrow bandwidth transmission line for PD pulse measurement has been confirmed to deform its waveshape. Furthermore, the time-domain results confirmed the impact of transmission lines reflection and losses on captured waveshapes.

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单独局部放电波形测量的传输线设计

测量瞬态现象，如单个PD脉冲需要快速，准确和无噪声的电路。这些电路中使用的元件的带宽会影响捕获的PD脉冲波形。传输线是测量系统中最重要的组成部分之一，它将PD源与数据记录设备连接起来。因此，在建立捕获单个PD脉冲的测试平台时，需要具有宽带的传输线。本文解释了理想的传输线设计的要求，使精确的单个PD脉冲波形测量。综合运用有限元分析(FEA)仿真分析了PD试验台设计对PD脉冲测量性能的影响。基于新设计的试验台和提出的传输线设计，通过有限元仿真的时域分析对单个局部放电的测量性能进行了检验。结果表明，传输线参数对其频率响应的影响。此外，窄带宽传输线在PD脉冲测量中的应用也证实了其波形的变形。此外，时域结果证实了传输线反射和损耗对捕获波形的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2020 IEEE Electrical Insulation Conference (EIC)

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