关于XLPE/修改SR在极性逆转下的电子转移和电特性之间的关系的研究
Zhi-Yuan Wu1, Yu-Zhi Jin2, Zhe-Xu Shi1
1School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China.
Polymers
|August 29, 2024
概括
在极性逆转期间,提高高压直流 (HVDC) 电缆绝缘是至关重要的. 将纳米碳化 (SiC) 和二氧化 (TiO2) 添加到 (SR) 中,可以有效地减少电荷积累,提高介电强度.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 聚合物科学 聚合物科学
背景情况:
- 高压直流 (HVDC) 电缆绝缘在电压极性逆转期间面临挑战,原因是严重的电场扭曲.
- 提高HVDC电缆中复合结构的绝缘性能是迫切需要的.
研究的目的:
- 研究 (SR) 中纳米SiC和TiO2添加剂对双层XLPE/SR复合保温材料在极性逆转下空间电荷特性和分解强度的影响.
- 建立微电子转移机制和聚合物的宏电特性之间的相关性.
主要方法:
- 使用溶液混合制造SiC-SR和TiO2-SR纳米复合材料的制造.
- 使用脉冲电声 (PEA) 空间电荷测试平台研究电子转移机制.
- 使用自制的分解平台来评估双层XLPE/SR样本在极性逆转下的介电强度.
主要成果:
- 纳米SiC和TiO2的最佳度在SR矩阵中引入深陷,显著抑制电荷积累.
- 这些纳米粒子有效地减少了在极性逆转期间XLPE/SR接口的电场扭曲.
- 双层XLPE/SR复合保温材料的介电强度得到了显著提高.
结论:
- 在SR中纳米添加剂 (SiC和TiO2) 有效地减轻空间电荷积累和在极性逆转期间在HVDC电缆绝缘中电场扭曲.
- 该研究建立了微观电荷动态与宏观电气性能之间的联系.
- 这些发现为提高HVDC电缆配件的可靠性和寿命提供了有希望的方法.
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