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首页> 外文期刊>Science, Measurement & Technology, IET >Accurate measurement of original current pulses because of positive corona in the coaxial cylindrical arrangement
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Accurate measurement of original current pulses because of positive corona in the coaxial cylindrical arrangement

机译：由于同轴圆柱布置中的正电晕，因此可以精确测量原始电流脉冲

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摘要

Current pulse because of positive corona discharge is a main source of radio interference (RI). An accurate measurement of the original corona pulse is necessary to study corona-generated RI. However, the corona pulse is likely to be distorted by either LC oscillation or reflection. In this study, an experiment system with single corona source is built which can provide a nearly free-reflection path for the current pulses, and measurements are carried out in the system. The magnitude of the measured waveform is close to one half of the original pulse, which proves the accuracy of the measurement method. In order to obtain the original current pulse, a comprehensive model for the current pulses' path, taking the stray capacitance and stray inductance into consideration, is established. Based on the model, an inversion method to derive the original pulse is proposed. In combination with the obtained original pulse, the model gives the calculated results for other experimental conditions. The calculated results agree well with the measured results, which provide solid validation for the accuracy of the measurement. Another advantage of the proposed measurement method is that the long cables enable the accurate measurements to be achieved under any terminal conditions.
机译：由于正电晕放电而产生的电流脉冲是无线电干扰（RI）的主要来源。要研究电晕产生的RI，必须对原始电晕脉冲进行准确的测量。但是，电晕脉冲很可能会因LC振荡或反射而失真。在这项研究中，建立了一个具有单电晕源的实验系统，该系统可以为电流脉冲提供几乎自由反射的路径，并在系统中进行测量。测量波形的幅度接近原始脉冲的一半，证明了测量方法的准确性。为了获得原始电流脉冲，建立了考虑杂散电容和杂散电感的电流脉冲路径的综合模型。在此模型的基础上，提出了一种反演原始脉冲的方法。结合获得的原始脉冲，模型给出了其他实验条件下的计算结果。计算结果与测量结果非常吻合，这为测量的准确性提供了可靠的验证。所提出的测量方法的另一个优点是，长电缆可以在任何终端条件下实现准确的测量。

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