Effects of Nano-Al<sub>2</sub>O<sub>3</sub> on Space Charge Behavior and Trap Energy Distibution Characteristics of Insulation Paper

LIAO Ruijin; XIANG Min; YUAN Yuan; GAO Bulin; ZHU Tongnian; LI Wangming

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Effects of Nano-Al₂O₃ on Space Charge Behavior and Trap Energy Distibution Characteristics of Insulation Paper

更新时间：2025-12-08

- Effects of Nano-Al₂O₃ on Space Charge Behavior and Trap Energy Distibution Characteristics of Insulation Paper
- Vol. 45, Issue 3, Pages: 681-690(2019)
- 作者机构：
  
  1. 重庆大学输配电装备及系统安全与新技术国家重点实验室
  2. 泰州新源电工器材有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：14 March 2019，
  
  Published：2019
- 稿件说明：
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LIAO Ruijin, XIANG Min, YUAN Yuan, et al. Effects of Nano-Al₂O₃ on Space Charge Behavior and Trap Energy Distibution Characteristics of Insulation Paper[J]. 2019, 45(3): 681-690.
DOI：

LIAO Ruijin, XIANG Min, YUAN Yuan, et al. Effects of Nano-Al₂O₃ on Space Charge Behavior and Trap Energy Distibution Characteristics of Insulation Paper[J]. 2019, 45(3): 681-690. DOI：

摘要

传统纤维素纸在直流电场的作用下易于积聚空间电荷而导致介质内部电场发生畸变引发事故。为改善油浸纤维素绝缘纸在直流电场下的空间电荷特性

使空间电荷难以积聚且易于消散

利用纳米Al2O3对绝缘纸进行改性

采用脉冲电声法（PEA）测试了不同纳米含量的油浸改性纸样在直流电场下的空间电荷密度

并对陷阱参数进行了计算。结果表明:纳米Al2O3掺杂质量分数为1%时对空间电荷行为的抑制效果最佳;纳米氧化铝的掺杂激发了深陷阱的形成

增大了深陷阱的密度

改变了纤维素绝缘纸中的陷阱能级分布;陷阱能级分布的改变解释了改性绝缘纸的体积电阻率和直流击穿场强随纳米氧化铝含量变化的原因。研究结果可为进一步研究纤维素绝缘纸的改性技术和提高纤维素绝缘纸的各项性能提供参考。

Abstract

Traditional cellulose paper is easy to accumulate space charge under the action of DC electric field

thus causing distortion of the electric field inside the medium. To improve the space charge characteristics of oil-impregnated cellulose insulation paper under DC electric field

and make the space charge difficult to accumulate and easy to dissipate

the cellulose insulation paper was modified with nano-Al

. The space charge density of oil-impregnated modified paper samples with different nanometer contents under DC electric field was tested by pulse electroacoustic method（PEA）

and the characteristic parameters of trap were calculated. The results show that samples with 1% quality fraction nano-Al

can improve the space char

ge behavior to the most degree. The doping of nano alumina can stimulate the formation of deep traps

which increases the density of deep traps and changes the trap energy distribution in cellulose insulation paper.The change of the trap characteristics explains the change of the DC breakdown field strength and volume resistivity of the insulating paper with the quality fraction various of nano-Al

. The research results can provide references for further research on the modification technology of cellulose insulation paper and the improvement of various properties of cellulose insulation paper.

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Related Institution

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Effects of Nano-Al2O3 on Space Charge Behavior and Trap Energy Distibution Characteristics of Insulation Paper

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Effects of Nano-Al₂O₃ on Space Charge Behavior and Trap Energy Distibution Characteristics of Insulation Paper