在DC GIL中对金属颗粒的运动特征进行三维动态模拟
Feng Bin1, Zhensheng Tan1, Jixiang Feng1
1School of Physics and Electronic Science, Changsha University of Science and Technology, Changsha, 410114, China.
Scientific reports
|November 29, 2025
概括
本研究介绍了气体绝缘输电线 (GIL) 中金属颗粒运动的3D模拟. 该模型准确地预测了粒子迁移和分布,改善了2D限制.
科学领域:
- 电气工程 电气工程
- 物理 物理学 物理
- 材料科学 材料科学 材料科学
背景情况:
- 气体隔热输电线 (GIL) 中的金属颗粒污染对系统可靠性构成风险.
- 现有的二维模拟缺乏模拟现实世界的粒子动态的空间精度.
- 了解粒子迁移对于防止绝缘故障至关重要.
研究的目的:
- 在GIL中开发和验证金属颗粒行为的3D模拟模型.
- 研究关键参数对粒子运动和分布的影响.
- 为预测GIL系统中的金属颗粒风险提供理论基础.
主要方法:
- 开发一个包含静电场分析和粒子跟踪的3D模拟.
- 动态接触理论和随机反射角度的应用,用于粒子-分子相互作用.
- 在电极和盆式绝缘体周围粒子运动的系统研究.
主要成果:
- 增加的反射角度显著扩大了粒子的辐射分布和轴移位.
- 粒子向绝缘体的凸面迁移,表现出爬上表面的行为.
- 粒子活力与电压正相关,与大小反相关;碰撞频率主要取决于电压和材料特性.
结论:
- 3D模型在GIL中提供了更准确的金属粒子动态表示.
- 模拟结果提供了对粒子迁移模式和影响因素的见解.
- 这些发现支持对GIL中金属颗粒污染的增强风险评估和缓解策略.
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