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首页> 外文会议>IEEE Conference on Electrical Insulation and Dielectric Phenomena >Comparison of air corona PD characteristics under low and power frequency voltage by impulse-current method
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Comparison of air corona PD characteristics under low and power frequency voltage by impulse-current method

机译：脉冲电流法在低频和工频电压下空气电晕放电特性的比较

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摘要

For partial discharge test of electrical equipment with large capacitance, applying low frequency test voltage can effectively reduce the capacity, cost and volume of test power, especially the transportation cost for field test. The characteristics of partial discharge at low frequency are necessary to be studied to form diagnosis method of insulation defect. This paper measures and analyzes the characteristics of corona discharge in air at 50 Hz, 40 Hz, 30 Hz, 15 Hz, 10 Hz and 5 Hz including inception voltage, repetition rate of pulse, maximum and average magnitude of discharge, phase resolved partial discharge pattern etc. The similarity and difference of characteristics at power and low frequency is discussed with experiments and theory, which can be a suggestion for partial test at low frequency.
机译：对于大容量电气设备的局部放电测试，施加​​低频测试电压可以有效降低测试电源的容量，成本和体积，尤其是现场测试的运输成本。需要研究低频局部放电的特性，以形成绝缘缺陷的诊断方法。本文测量并分析了在50 Hz，40 Hz，30 Hz，15 Hz，10 Hz和5 Hz的空气中电晕放电的特性，包括起始电压，脉冲重复率，最大和平均放电幅度，相位分辨局部放电通过实验和理论探讨了功率和低频特性的相似性和差异性，可以为低频部分测试提供建议。

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