石墨烯和CNT胶体的流光演化阻滞控制放大的PDKEEPAAA击穿强度
Streamer evolution arrest governed amplified AC breakdown strength of graphene and CNT colloids
摘要：
本文通过实验探索了通过添加微量石墨烯或CNT以形成稳定分散体来大幅度提高绝缘矿物油的AC介电击穿强度的概念。与基础油相比，注入有这些高电子电导率的纳米结构的纳米油在增强的击穿强度方面显示出优异的AC介电行为。对两种合成的石墨烯和CNT纳米油的实验观察表明，纳米材料不仅提高了平均击穿电压，而且显著提高了油在交流高压应力下的可靠性和存活概率。通过本发明的概念，油的交流击穿电压的调谐提高了~ 70- 80%。目前的研究检查的可靠性，这种纳米胶体的帮助下，两个参数威布尔分布和油显示出大大增强的电场承载能力在两个标准的生存概率值为5%和63.3%。负责这种观察到的结果的基本机制是合理的延迟流光发展和减少流光生长速率由于有效的电子清除的纳米结构从离子化液体绝缘体。提出了一种基于电子清除原理的数学模型来量化纳米结构所清除的电子量。同样的，然后采用预测增强的交流击穿电压和实验值被发现与模型预测匹配良好。本研究对实际交流电力系统的高效、可靠和安全运行具有重要意义。
英文摘要：
The present article experimentally explores the concept of large improving the AC dielectric breakdown strength of insulating mineral oils by the addition of trace amounts of graphene or CNTs to form stable dispersions. The nano-oils infused with these nanostructures of high electronic conductance indicate superior AC dielectric behaviour in terms of augmented breakdown strength compared to the base oils. Experimental observations of two grades of synthesized graphene and CNT nano-oils show that the nanomaterials not only improve the average breakdown voltage but also significantly improve the reliability and survival probabilities of the oils under AC high voltage stressing. Improvement of the tune of ~ 70-80 % in the AC breakdown voltage of the oils has been obtained via the present concept. The present study examines the reliability of such nano-colloids with the help of two parameter Weibull distribution and the oils show greatly augmented electric field bearing capacity at both standard survival probability values of 5 % and 63.3 %. The fundamental mechanism responsible for such observed outcomes is reasoned to be delayed streamer development and reduced streamer growth rates due to effective electron scavenging by the nanostructures from the ionized liquid insulator. A mathematical model based on the principles of electron scavenging is proposed to quantify the amount of electrons scavenged by the nanostructures. The same is then employed to predict the enhanced AC breakdown voltage and the experimental values are found to match well with the model predictions. The present study can have strong implications in efficient, reliable and safer operation of real life AC power systems.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
