论文标题
DC部分放电分析的传输线和电磁场传感器的设计
Design of Transmission Line and Electromagnetic Field Sensors for DC Partial Discharge Analysis
论文作者
论文摘要
对于分析单个部分放电（PD）脉冲是必需的，具有足够带宽的准确测量电路和高频传感器。在本文中，设计和构建了用于研究直流PD脉冲的测试台。测试床配备了50欧姆传输线（TL），该线路终止于示波器，用于测量PD脉冲产生的电荷位移电流。除示波器测量外，开发了两种类型的电磁场传感器（D-DOT和B点），以捕获通过TL传播的PD脉冲的EM场。本文的主要目的是通过EM场研究DC PD脉冲，以及相应的放电电流脉冲，这些脉冲被认为是开发的D-DOT和B点传感器的校准信号。通过构造的测试床和EM场传感器测量的DC腔放电的结果表明，与通过示波器测量的参考PD脉冲密切一致。
Accurate measurement circuit and high-frequency sensors with sufficient bandwidth are necessary for the analysis of individual partial discharge (PD) pulses. In this paper, a testbed is designed and constructed for the investigation of DC PD pulses. The testbed is equipped with a 50 ohm transmission line (TL) that terminate to an oscilloscope for measuring the charge displacement current generated by PD pulses. Besides the oscilloscope measurements, two types of electromagnetic field sensors (D-dot and B-dot) were developed to capture the EM fields of the PD pulses propagating through the TL. The main goal of this paper is to investigate the DC PD pulses through the EM fields and the corresponding discharge current pulses that are considered as calibrating signals for the developed D-dot and B-dot sensors. The results of DC cavity discharge measured by the constructed testbed and the EM field sensors demonstrate close agreement with the reference PD pulses measured via oscilloscope.
