环氧树脂针-板缺陷在指数衰减脉冲和正弦电压作用下的局部放电特性

doi:10.19595/j.cnki.1000-6753.tces.181718

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Abstract Epoxy needle-plate defects were fabricated to simulate the defects of metal protrusions in the epoxy resin of the saturable reactor in this paper. The partial discharge (PD) characteristics of epoxy resin under exponential decay pulse voltage and sinusoidal voltage were studied. The comparison and analysis were conducted from the aspects of PD inception voltage, PD number, average PD magnitude and PD distribution. The PD characteristics at 25℃ and 110℃ were also compared and analyzed in this paper. It is found that under the same amplitude exponential decay pulse voltage and sinusoidal voltage, the PD inception voltage under the pulse voltage is lower, PD magnitude is larger and PD number is smaller. For the same applied voltage, the PD inception voltage at 110℃ is lower than that at 25℃, the average PD magnitude is greater, and the PD number is reduced. The experimental results can provide a basis for optimal insulation design of saturable reactor under exponential decay pulse voltage.

Key words： Saturable reactor epoxy resin partial discharge exponential decay pulse voltage

Received: 05 November 2018 Published: 17 January 2020

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TM835

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	Mi Yan
	Gui Lu
	Liu Lulu
	Deng Shengchu
	Ouyang Wenmin

Cite this article:

Mi Yan,Gui Lu,Liu Lulu等. Partial Discharge Characteristics of Epoxy Resin Needle-Plate Defect under Exponential Decay Pulse and Sinusoidal Voltage[J]. Transactions of China Electrotechnical Society, 2020, 35(2): 425-434.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.181718 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I2/425

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